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Outdoor Unit - daikin tech.co. uk

1. SiBE12 908_A Release the mounting plate from the hook Disconnect the connector for the fan motor S70 Release the lead wire for the fan motor from the hooks Disconnect the connector for the gas pipe thermistor S91 and for the liquid pipe thermistor S92 Removal Procedure Procedure J gt S92 NS Ey ditm e de S91 Td T AS n Outdoor Unit B When reassembling make sure to hook the mounting plate S91 Gas pipe thermistor white S92 Liquid pipe thermistor 232 Outdoor Unit SiBE12 908_A Procedure Disconnect the S40 Overload protector connector for the overload protector S40 is ay mm iri RAN d V SE i M n d d R9942 8 Disconnect the S20 white Electronic 9 Disconnect the 10 Disconnect the 2 connectors S20 S21 S20 S80 expansion valve coil for S21 and S80 room A E po ie S21 red Electronic L rere EA i expansion valve coil for T gi h d mm RE LL H S80 Four E valve coil i UT ANS NS Le Ya ANS he R9943 connector for the relay harness of compresso
2. Lift up the back side B When reassembling make slightly and release the sure that the hooks of the hooks of the front ELM electrical box are placed on the PCB m E G Lj Release the lead wires from the hook and remove the terminal boards ta on 22 gt 4 om i R9966 239 Removal Procedure SiBE12 908_A Outdoor Unit Procedure QM A CJ Kg fH 0 UU zs a M Dx 10 Lift up the control PCB to remove Es 0 YA Jt ell i imm S a Sy H ie iliy A il d S Removal Procedure 240 Outdoor Unit SiBE12 908_A Step Procedure 11 Control PCB B See page 12 for detail S40 S91 S92 S20 S80 S72 S70 990 R9969 S20 Electronic expansion valve coil for room A S21 Electronic expansion valve coil for room B S22 Damper motor S23 Rotor motor S40 Overload protector S70 DC Fan motor S72 Humidifying fan motor S80 Four way valve coil
3. 2 Disconnect the flag shaped terminals Protection bushing l for lead wires 3 Detach the terminals by long nose pliers 4 C e Undo the hooks by a N X 3 flat screwdriver to ON Wes remove the overload d ON ES protector 7 BESS LS NG al 3 S N O AS 4 Detach the overload protector Removal Procedure 250 Outdoor Unit Procedure 5 Remove the 2 nuts with an open end spanner B Before working make sure that the refrigerant is empty in the circuit Be sure to apply nitrogen replacement when heating up the brazed part Heat up the brazed part of the discharge side and disconnect Heat up the brazed part of the suction side and disconnect Lift the compressor up to remove Compressor 251 R9990 SiBE12 908 A Since it may happen that refrigerant oil in the compressor catches fire prepare wet cloth
4. Removal Procedure 230 Outdoor Unit SiBE12 908_A 2 8 Removal of Electrical Box Procedure AP Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Disconnect the B When reassembling fasten connecting wires the wires with screws on the 1 Remove the 2 terminal board grounding screws Remove the 2 screws to remove the wiring fixture Then remove the all screws for the connectors to disconnect the power supply cable and the connecting wires 2 Removal of the electrical box 1 E Release the outdoor air N thermistor from the 2 holder Jc NES kamt f Wl Il 2 Lift up the guard net to remove ap d QW o R9937 231 Removal Procedure B The terminal board is united O i j yaaa resin formation W GA
5. 248 Outdoor Unit SiBE12 908_A Ste Procedure Points 3 Open the putty and remove the each E c a o thermistor Ve lt Ma mus 891 Ee gen IN ON Thermistor Gas ermistor J Room A Black NN VA Room B Gray mcs X Al Liquid pipe VT thermistor 4 f NS Room A Black U Hoom B Gray Si N NE Wi V bested i AT e Room B hw Thermistor Gas Room B R7635 4 The figure shows the m When reassembling meet arrangement of the the edge of the thermistor assembly of the liquid me and the clip gas thermistors lt 249 Removal Procedure SiBE12 908_A Outdoor Unit 2 13 Removal of Compressor Procedure MN Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the terminal AET PE B Be careful so as not to burn cover the compressor terminals or WU a the name plate
6. N CAUTION Make sure that the shaded part 7 will not go inside the electrical wiring box Refrigerant Piping Work TIRE RH TIT install as described in the installation manual supplied with the multi outdoor unit 1 Flaring the pipe end i 1 Cut the pipe end with a pipe cutter Cut exactly at 2 Remove burrs with the cut surface facing downward night angles SST so that the chips do not enter the pipe Flarin 9 3 Put the flare nut on the pipe Set exactly at the position shown below 4 Flare the pipe 5 Check that the flaring is properly made Flare tool for R 410A Conventional flare tool Clutch type Clutch type Rigid type Wing nut type Imperial type The pipe end must Flare s inner be evenly flared in surface must be flaw free a perfect circle Make sure that the flare nut is fitted N WARNING Do not use mineral oil on flared part Prevent mineral oil from getting into the system as this would reduce the lifetime of the units 1 2 3 Never use piping which has been used for previous installations Only use parts which are delivered with the unit 4 Do never install a drier to this R 410A unit in order to guarantee its lifetime 5 The drying material may dissolve and damage the system 6 Incomplete flaring may cause refrigerant gas leakage 58 Installation Operation Manual Installati
7. Sound blanket bottom Removal Procedure 244 Outdoor Unit SiBE12 908_A 2 11 Removal of the Propeller Fan Fan Motor Procedure MN Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure 1 Removal of the propeller B Spanner size 10mm fan 1 Unscrew the washer fitted nut M6 by an open ended spanner to remove the propeller fan B When reassembling align Y mark of the propeller fan with D cut section of the motor shaft R7620 2 E of the fan motor 2 Removal ofthe fan motor the connector S70 for the fan motor from the PCB oe lk EIN MOR Vy TR Wiz SN CESS
8. 2MXU40GV1B OUTDOOR UNIT OUTDOOR TEMPERATURE MUFFLER MOTOR OPERATED VALVE BRANCH THERMISTOR Hips LIQUIDPIPE LIQUID LINE PIPE 200 1 HEAT EXCHANGER THERMISTOR STOP VALVE 0Cu MUFFLER 6 4CUT em 6 4CuT C 6 4CuT D lt ROOM A 7 0CuT TR ET SS Ste 6 4 CuT e PIPE MUFFLER PIPING MOTOR OPERATED VALVE LIQUID PIPE LIQUID LINE MR RE DS WI THERMISTOR STOP VALVE LIQUID WITH FILTER MUFFLER BRANCH QO 6 4CuT l ROOM B ME 4 8CUT Se E 6 4 CuT THERMISTOR LA a 4 8CuT d FAN MOTOR mU 9 5CuT PROPELLER FAN GAS LINE GAS PIPE STOP VALVE c MUFFLER THERMISTOR 9 5CuT 9 5CuT 9 5CuT ROOM A A MUFFLER BRANCH si je m Jess 9 5 CuT 9 5CuT 9 5CuT TES PIPE GAS PIPE FIELD TOP VALVE gt OC MUFFLER THERMISTOR GAS FOUR WAY VALVE 9 5CuT C 9 5CuT 1 DOC B L ON HEATING 9 5 CuT AS MUFFLER E D E BRANCH DISCHARGE PIPE PIPE THERMISTOR 7 9 REFRIGERANT FLOW S 1 GOONG ACCUMULATOR HEATING COMPRESSOR NEE 3D063308 2MXU50GV1B OUTDOOR UNIT OUTDOOR TEMPERATURE BRANCH THERMISTOR MOTOR OPERATED VALVE LIQUID PIPE LIQUID LINE cur HEAT EXCHANGER FILTER THERMISTOR STOP VALVE PIPE 9C0uT 6 4CuT BOOM A cb HE DI dere 6 4CuT FIELD MUFFLER MOTOR OPERATED VALVE LIQUID PIPE LIQUID LINE PIPING WITH Eva FILTER THERMISTOR STOP VALVE LIQUID BRANCH S ggg 64CuT amp 4CuT 1 l
9. mG PL L R9979 Removal Procedure SiBE12 908_A Outdoor Unit Ste Procedure Points 2 The figure shows the arrangement of the fan motor lead wire N LN SS ie ER AS R9980 3 Remove the 1 screw to m When reassembling make remove the fan motor sure mark of the fan motor fixing plate A goes down Giro NE Y MANC V aan B When reassembling fit the 2 lower hooks into the bottom frame 4 Remove out the fan motor fixing plate toward yourself Removal Procedure 246 Outdoor Unit 5 Turn the fan motor fixing plate backward and undo the 2 fixing hooks of the lead wire Release the fan motor lead wire Remove the 4 screws and 4 rubber vibration isolators to remove the fun motor Procedure R9983 R7627 R7628 SiBE12 908 A B When reassembling put the lead wire through the back of the motor so
10. 145 2 27 Thermistor or Related Abnormality Outdoor Unit 146 2 28 Abnormal Temperature in Electrical Box ssssese 148 2 29 Temperature Rise in Radiation Em 150 2 90 Output ee t EE 152 2 31 Refrigerant Shortage ccoooccccccccccccococococonnnocannononnnonnnononnnonannnonnnnnnaninons 154 2 32 Over Voltage Protection Low Voltage Protection 156 2 33 Outdoor Unit PCB Abnormality or Communication Circuit Abnormality coooccccocccncccccnnocononononnnncnanonos 157 2 34 Signal Transmission Error on Outdoor Unit PCB 160 2 35 Fan Motor System Abnormality Fan Lock ssss 162 2 36 Heater Wire Abnotrmallly io 163 2 37 Humidifying Fan Outlet Thermistor Abnormality Heater Temperature Abnormality cooccoccccccccociconocanonnnoncnoncncnaninos 165 2 38 Lights out of Microcomputer Status Lamp 167 A e IgE O O mT eet 168 3 1 Fan Motor Connector Output Check 168 3 2 Thermistor Resistance Check 169 o9 instalation Condition Ee t o a cea 170 3 4 Outdoor Fan System Check DC Motor 170 3 5 Power Supply Waveform Check 171 3 6 Main Circuit Electrolytic Capacitor Check 171 3 7 Refrigerant System Check 172 oo Inverter Checker CheCk xut otii E 173 3 9 Power Transistor Check sata a 175 3 10 Discharge Pressure Check 175 3 11 Electr
11. 3 Use separate thermal insulation pipes for gas and liquid refrigerant pipes e Flaring the pipe end 1 Cut the pipe end with a pipe cutter 2 Remove burrs with the cut surface facing downward so that the chips do not enter the pipe ae DEES 3 Put the flare nut on the pipe PL 4 Flare the pipe Flaring Set exactly at the position shown below 5 Check that the flaring is properly made Clutch type Rigid type Wing nut type Imperial type A 1 0 1 5mm 1 5 2 0mm Flare s inner The pipe end must surface must be evenly flared in be flaw free a perfect circle Make sure that the flare nut is fitted N WARNING 1 Do not use mineral oil on flared part 2 Prevent mineral oil from getting into the system as this would reduce the lifetime of the units 3 Never use piping which has been used for previous installations Only use parts which are delivered with the unit 4 Do never install a drier to this R410A unit in order to guarantee its lifetime 5 The drying material may dissolve and damage the system 6 Incomplete flaring may cause refrigerant gas leakage 73 Installation Operation Manual SiBE12 908_A Installation Manual Pump Down Operation In order to protect the environment be sure to pump down when relocating or disposing of the unit 1 Remove the valve caps on the liquid and the gas stop valves at the pipes for Liquid rooms A and B Bion vali bore e 2 Run the unit on for
12. Human detection ON j j signa OFF e e 3 e R2821 B This sensor detects human motion by receiving infrared rays and displays the pulse wave output B Amicrocomputer in an indoor unit carries out a sampling every 20 milliseconds and if it detects 10 cycles of the wave in 1 0 second in total corresponding to 20 msec x 10 200 msec and when the ON signal continues for 3 seconds it judges that human is in the room as the motion signal is ON B INTELLIGENT EYE sensor is divided into 2 areas and detects humans in each area E Image of 2 AREA INTELLIGENT EYE in LU Top view Y N Y ht N N Y Y Ba E yt bm Area B AreaA Y D i N A microcomputer judges human existence in area A and B by the sensor signal from each R3854 Function and Control 28 Main Functions SiBE12 908_A 2 The motions in energy saving operation for example in cooling within 20 minutes 20 min 20 min Human detection ON signal or EL LL L From area A or B EBENE Cooling Set temp 2 C Heating Set temp 2 C Set temp INTELLIGENT EYE ON LED OFF Remote controller i i INTELLIGENT EYE ON button OFF ON i i t r Operation OFF Fan speed 1 Set speed Set speed Set speed 60 rpm i OFF R8350 B When a microcomputer does not have a signal from the sensor in 20 minutes it judges that
13. DAIKIN SiBE12 908_A Service Inverter Multi System with Humidifying G Series E S Uru Muli 1 1 p mQ 1 i 1 1 E Se AS 1 a E L L E ee e EE M 1 SES ELM 1 ESTEE 1 gt EA 1 E E be SE E 1 E A E 8 1 E st E E i Is Applied Mode O Inverter Multi Heat Pump SiBE12 908_A Inverter Multi System with Humidifying G Series eHeat Pump Indoor Unit CTXU25G2V1B CTXU35G2V1B CTXU42G2V1B CTXU50G2V1B Outdoor Unit 2MXU40GV1B 2MXU50GV1B Table of Contents SiBE12 908_A o ERE Vi all Safe Cautions per vi t2 Used ICONS rrota A A X Part 1 Stout Eeer LRA CIC TION EE 2 Part 2 Specifications ica T SPECIMCAONS eessen gege SEA 5 MM selecta emer 5 12 Outdoor Se 6 Part 3 Printed Circuit Board Connector Wiring Diagram 8 1 Printed Circuit Board Connector Wiring Diagram 9 MM O P UIN NANEUN 9 k2 UICE EE 11 Part 4 Function and Control 2 2 2222222222222222222222222222222 1 Ts Man EU GIONS EE 14 t1 Freguency PrinciDlE E oo A a r E 14 12 Thernosiat COMMON isis e ie thee tasers tel nace do ci 16 1 3 Automatic OUperaton 17 t4 Program DIY UN CO 18 1 5 Airflow Direction Control 19 1 6 Fan Speed Control for Indoor Ulnte 20 17 HUMID HEAT Operation i iet iode sc de oio elo enit e 21 1 8 Fresh
14. Refer to page 22 When selecting desired mode at STEP 4 in setting mode select blank The reservation will be deleted The reservations for each day of the week This function can be used for deleting reservations for each day of the week t can be used while confirming or setting reservations 5 Press SELECT button to select the day of the week to be deleted 6 Hold the WEEKLY button for 5 seconds The reservation of the selected day of the week will be deleted All reservations 7 Hold the WEEKLY button for 5 seconds Be sure to direct the remote controller toward the indoor unit and check for a receiving tone This operation is not effective while WEEKLY TIMER is being set All reservations will be deleted Installation Operation Manual SiBE12 908_A Operation Manual 3 11 Note for Multi System Note for Multi System What is a Multi System This system has one outdoor unit connected to multiple indoor units E Selecting the operation mode Outdoor 1 With the Priority Room Setting present but inactive or not E present Living room When more than one indoor unit is operating priority is given to the first unit that was turned on In this case set the units that are turned on later to the same operation mode 1 as the first unit Otherwise they will enter the Standby Mode and the operation lamp will flash this does not indicate malfunction 1 e CO
15. S gt A 6 Remove the heat B Use care not to lose the exchanger thermistor retainer of thermistor Retainer of thermistor Heat exchanger thermistor a U R10311 7 Disconnect the earth wire by removing the screw HL AYN Earth wire R10312 195 Removal Procedure SiBE12 908_A Remove the screw of the electrical box Lift up the electrical box and pull it toward yourself Removal Procedure Indoor Unit Procedure ANS I oY R10313 B When reassembling make sure to fasten the upper D y f the hook at the back o l SCH electrical box Then also uf fasten the lower hook at the Electrical box nu back iiic R10314 196 Indoor Unit SiBE12 908_A 1 6 Removal of PCB Procedure AN Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Pons 1 Removing the shield plate The figure shows the ER Preparation appearance of the d TS B Remove the electrical box electrical box according to the Removal al of Electrical Box hein i Be h INTELLIGENT EYE WEN nm Ci R8083 Open the shield plate at the top Unfasten t
16. gt Remote Controller Display Method of Check the incompatible power supply between indoor unit and outdoor unit by using signal Malfunction transmission Detection Method of In case that the indoor intake model is connected to outdoor intake model Malfunction Detection Supposed B Connected to wrong model Causes B Mounted improper indoor unit PCB B Defective indoor unit PCB B Mounted improper outdoor unit PCB or defective PCB Troubleshooting Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check model names of the indoor unit and the outdoor unit Is the combination of the indoor unit and the outdoor unit correct Arrange for a correct combination Replace the indoor control PCB A1P or replace the outdoor unit PCB R9436 129 Service Diagnosis SiBE12 908_A Troubleshooting 2 14 Incomplete Setting for Hose Length gt Hi ng Remote Controller Display Method of This fault occurs when the humidification hose length is not stored in the EEPROMs of the Malfunction indoor unit and the outdoor unit Detection Hose length is not stored at initial power on Malfunction B When the humidification hose length is not stored in EEPROMs of the indoor unit and the Decision outdoor unit Conditions Supposed Hose length is not set Causes Hose length is erased by replacement of the indoor unit PCB or the outd
17. Remove the vertical blade interlock by a flat screwdriver 207 Vertical blade Pivot A a MO AA uu ee __ gt ree WII VZ S 12 R10623 P nuum 7 4 aot ran 1 Swing motor unit R8126 Vertical blade interlock R10331 SiBE12 908_A Removal Procedure SiBE12 908_A Indoor Unit Step Procedure 8 Remove the 2 screws 9 Remove the swing motor for vertical blade R10333 10 Disconnect the B Connector green connector Removal Procedure 208 Indoor Unit SiBE12 908_A Step Procedure Pons for horizontal blade AP Caution 1 Remove the screw to When reassembling do not remove the swing confuse the installing order motors for horizontal of the 2 motors and the blades Connector for colors of the connectors lower blade red If you set the connectors or motors opposite the horizontal blades do not move smoothly or the noise may be heard Screw 1 Set the motor for the upper blade first connector white 2 Then set the motor for the lower blade connector red 3 Fix the both motors with a Screw Connector for upper blade white 2 Disconnect the harnesses from the motors R10335 209 Removal Procedure SiBE12 908_A Indoor Unit 1 10 Removal of Fan Rotor Procedure N Warning Be sure to turn off all power supplies at least 10 minutes before disa
18. button E COMFORT AIRFLOW operation e Check COMFORT AIRFLOW operation in the section of COMFORT AIRFLOW Operation and INTELLIGENT EYE Operation page 15 NOTE Bi Notes on flaps and louvers angles e When SWING button is selected the flaps swinging range depends on the operation mode See the figure 3 Dimensional 3 D airflow Using 3 dimensional airflow circulates cold air which tends to collected at the bottom of the room and hot air which tends to collect near the ceiling throughout the room preventing areas of cold and hot developing B ATTENTION Always use a remote controller to adjust the angles of the flaps and louvers If you attempt to move it forcibly with hand when it is swinging the mechanism may be broken Always use a remote controller to adjust the louvers angles In side the air outlet a fan is rotating at a high speed In DRY mode or COOL mode AI COMFORT AIRFLOW 5 page 15 15 Upper limit Lower limit Stop operation In HEAT mode Stop operation E 30 Upper limit In FAN mode zs 5 TE SIA A E 5 Upper limit 2 2 lo 80 Y Lower limit Stop operation Installation Operation Manual SiBE12 908_A Operation Manual 3 4 HUMID HEAT Operation HUMID HEAT Operation This function enables the humidification of a room where the air conditioner is in HEAT operation thus providing appropriate humidity to the room if the function is used in w
19. Insert a hexagon wrench 4mm 10 Installation Operation Manual 62 Installation Manual Indoor Unit Installation Left side piping Left back piping Humidifying hose NS Drain hose Cut out the ix piping through hole Refrigerant pipe ZN Refrigerant pipe SiBE12 908 A Left bottom piping zi Refrigerant pipe Cut out the piping through hole Humidifying hose 1 Replace the drain plug and drain hose How to replace the drain plug and drain hose 2 Pull in the refrigerant piping and lay it so that it matches the liquid and gas piping marked on the A mounting plate 3 Hook the indoor unit onto the A mounting plate 4 Connect the pipes If it is difficult to do remove the front grille first 5 Wrap the insulation on the piping with insulation tape If you are not replacing the drain hose store it in the location shown as right figure D v a L Drain hose NEAR Ec Caulk this hole Bind with with putty or caulking material 6 While exercising care so that the inter unit wiring do not catch indoor unit press the bottom edge of indoor unit with both hands until it is firmly caught by the mounting plate hooks Secure indoor unit to the mounting plate with screws M4 x 12L 5 3 Wall embedded piping Follow the instructions given under Left side left back or left bottom piping f 1 Insert the drain hose to this depth so it won t be pulled out of
20. POWERFUL COMFORT SWING QUIET SENSOR MODE vigo G WEEKLY COPY BACK A NEXT SELECT OFF ON CANCEL 9 E Y NOTE BH COPY MODE 3 5 2 4 Confirmation display Copy mode A reservation made once can be copied another day of the week The whole reservation of the selected day of the week will be copied Program 1 Program2 Program 3 Program 4 ON OFF ON E OFF Monday ED aro 6 00 830 T3 200 copy Y Program Program2 Program 3 Program 4 Tuesday ON OFF ON op to y aD Friday oa 830 om 29 Setting Displays a n PM e M m NA s kg O WEEKLY E SET ON 600 TUE TURN A ba un de 25 Copy display Paste display 1 Press PROGRAM button 2 Press SELECT button to confirm the day of the week to be copied 3 Press COPY button This activates copy mode The whole reservation of the selected day of the week will be copied the week 5 Press COPY button The reservation will be copied to the selected day of the week Operation Manual MON Normal display 4 Press SELECT button to select the destination day of To continue copying the settings to other days of the week repeat STEP 4 and STEP 5 Exit copy mode 6 Press PROGRAM button to complete the setting e is displayed on the LCD and WEEKLY TIMER operation is activated e Th
21. S1 S49 CONNECTOR WIRELESS SIGNAL INDOOR S1W OPERATION SWITCH A DEL RECEIVER SS SC SS X1M TERMINAL STRIP exu E dM Si Se ee MS PROTECTIVE EARTH 3D062523 263 Appendix SiBE12 908_A 2 2 Outdoor Units Wiring Diagrams BLK BLACK a E 8 GASPIPE LIQUID PIPE BRN BROWN Sms 2 22 GRN GREEN 538 88 gg ROOM A ROOM B GRY GRAY SA A S a gar Qu Y1E Y2E L1R ORG ORANGE R1TR2TR3T R7TR8T ROT R6T PNK PINK t t RED RED indoor WHT WHITE See oq oq 256250 cO E 04 YON YELLOW cacac5c5 COOC ea ea o 1 4 1 6 1 6 S92 RED 20 WHT S21 RED ROOM B 1 L 2x3 N 2 SUPPLY aaa aa 2322322 xx cacacacaca caca CO co t y T W i S1C R4T M3F FIELD WIRING M2 M1 DB1 DIODE BRIDGE M1 M2 MOTOR S1C LIMIT SWITCH S20 S21 S22 S23 E1H HEATER M1C COMPRESSOR MOTOR S1T THERMOSTAT S40 S45 S70 S72 FU1 FU2 FU3 FUSE M1F M2F M3F FAN MOTOR SA1 SURGE ARRESTER S80 S90 S91 S92 HH1 HH2 MRM10 MRM20 TFU THERMAL FUSE S501 X1A X5A CONNECTOR HK1 HK2 HK3 CONNECTOR MRK MR4 MAGNETIC RELAY V2 V3 VARISTOR PROTECTIVE EARTH IPM1 IPM701 INTELLIGENT POWER MODULE N NEUTRAL X
22. S90 Discharge pipe Heat exchanger Outdoor air thermistor S91 Gas pipe thermistor S92 Liquid pipe thermistor 12 Remove the 2 screws of the radiation fin B When reassembling be sure to apply silicon grease for encouraging the heat radiation See page 259 for detail 241 Removal Procedure SiBE12 908_A Outdoor Unit 2 10 Removal of Sound Blanket MN Warning Be sure to wait 10 minutes or more after turning off all power supplies Procedure before disassembling work Step Procedure 1 Removal of the right side Preparation B Remove the electrical box panel 1 Remove the 6 screws Io Geet beforehand to remove the right side panel nini ee Oe oe ee enen mm um o A o St 2 Removal of the partition 20 e J 1 Remove the 2 screws to remove the partition plate B When reassembling make sure to catch the lower hook of the partition plate 2 Since there are hooks on the partition plate lift up once and pull out toward yourself to remove it O pones EMI 7 Ea p m Remove the screw of the reactor and then remove the reactor Removal Procedure 242 Outdoor Unit SiBE12 908_A Step Procedure Points 3 Removal of the sound blanket 1 Release the fixing strings
23. TIMER Operation WDAIKIN FAN MHON OFF Ex TEMP 95 y MODE N ECOND POWERFUL COMFORT SWING QUIET SENSOR COPY JV NEXT SELECT v CoN C LO 4 CANCEL ATTENTION Installation Operation Manual 1 3 B To use ON TIMER operation Check that the clock is correct If not set the clock to the present time 1 Press ON TIMER button o Du is displayed e ON blinks e and day of the week disappears from LCD 2 Press SELECT button until the time setting reaches the point you like e Every pressing of either button increases or decreases the time setting by 10 minutes Holding down either button changes the setting rapidly 3 Press ON TIMER button again e ON and setting time are displayed on the LCD The TIMER lamp lights up MULTI MONITOR E To cancel ON TIMER operation 4 Press CANCEL button e ON and setting time disappears from LCD es and day of the week are displayed on the LCD The TIMER lamp goes off B To combine ON TIMER and OFF TIMER A sample setting for combining the two timers is shown below Example Present time 23 00 The unit operating OFF TIMER at 0 00 ON TIMER at 14 00 Combined Bi In the following cases set the timer again e After a breaker has turned OFF After a power failure After replacing batteries i
24. ROOM A ROOMB 2 Mount the F humidifying hose cover Insert the 4 tabs of the cover as shown in the figure Tighten the E screw and secure the F humidifying hose cover and outdoor unit F Humidifying hose cover Connecting through the path above the humidifying hose cover 1 Cut out the knockout hole on the F humidifying hose cover F Humidifying hose cover 2 Insert the D humidifying hose 2m into the knockout hole D Humidifying hose 2m 3 Insert the D humidifying hose into the humidifying duct on the back of the outdoor unit e api D i p 4 Mount the F humidifying hose cover Insert the 4 tabs of the cover as shown in the figure Tighten the E screw and secure the F humidifying hose cover and outdoor unit o Se E Screw 12 Installation Operation Manual 76 Installation Manual SiBE12 908_A Wiring AN WARNING 1 Do not use tapped wires stranded wires CAUTION 1 extension cords or starburst connections as they may cause overheating electrical shock or fire 2 Do not use locally purchased electrical parts inside the product Do not branch the power for the drain pump etc from the terminal block Doing so may cause electric shock or fire 3 Be sure to install an earth leakage breaker One that can handle higher harmonics This unit uses an inverter which means that it must be used an earth leakage breaker capable handling har
25. SiBE12 908_A The humidifying of this system is different from that of the normal humidifier Therefore the humidifying performance varies with the outdoor temperature or installation condition Sufficient humidifying capacity may not be attained depending on the weather condition in operation When the outdoor temperature lowers by 5 C the humidifying capacity is decreased by about 15 When the outdoor humidity lowers by 20 the humidifying capacity is decreased by about 20 Humidifying hose length 4 0m II Outdoor relative humidity 87 RH rated 450ml h Indoor 20 CDB Outdoor 7 CDB 6 CWB gt 8079 RH 70 RH 60 RH 50 RH 40 RH 600 500 LANI ANA MANN 400 300 30 RH 20 RH 200 Humidifying Capacity ml h 100 La T T EZ E LW AAAA ANAL AA AN e Outdoor temperature C R9413 The max piping length is 15 m but the longer the length of the humidifying hose becomes the less the humidifying performance becomes Outdoor temp 7 CDB 6 CWB 105 0 m o 100 0 w E ze SE 95 096 Q E M Oo c Y gt 0 90 0 A Oo ES a b c d S lI n Ke 85 0 80 0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Hose length m R9414 Applicable hose Hose diameter A KPMH996A10S 1 D 25mm B KPMH996A15S I D 30mm Hose length setting a 3 0m b 3 1 4 0m c 4 1 6 0m d 6 1 8 0m e 8 1
26. Washing the unit with water may cause an electrical shock Be sure to provide the grounding when repairing the equipment in a humid or wet place to avoid electrical shocks Be sure to turn off the power switch and unplug the power cable when cleaning the equipment The internal fan rotates at a high speed and cause injury Be sure to conduct repair work with appropriate tools The use of inappropriate tools may cause injury Be sure to check that the refrigerating cycle section has cooled down enough before conducting repair work Working on the unit when the refrigerating cycle section is hot may cause burns Use the welder in a well ventilated place Using the welder in an enclosed room may cause oxygen deficiency SiBE12 908_A Introduction 1 1 2 Cautions Regarding Safety of Users Be sure to use parts listed in the service parts list of the applicable model and appropriate tools to conduct repair work Never attempt to modify the equipment The use of inappropriate parts or tools may cause an electrical shock excessive heat generation or fire If the power cable and lead wires have scratches or deteriorated be sure to replace them Damaged cable and wires may cause an electrical shock excessive heat generation or fire Do not use a joined power cable or extension cable or share the same power outlet with other electrical appliances since it may cause an electrical shock excessive heat generation or fire Be
27. 108 C when the frequency is below 30Hz on ascending or below 25Hz on descending B The error is cleared when the temperature has dropped below 95 C B f the compressor stops 4 times successively due to abnormal discharge pipe temperature the system is shut down B The error counter resets itself if this or any other error does not occur during the following 60 minute compressor running time total time Supposed B Refrigerant shortage Causes Faulty operation of four way valve Defective discharge pipe thermistor Defective heat exchanger thermistor or outdoor air thermistor Defective outdoor unit PCB Water mixed in the field piping Defective electronic expansion valve Defective stop valve Troubleshooting MN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check No 02 Refer to P 169 Check No 02 Malfunctioning Check the Replace the defective thermistors e Discharge pipe thermistor thermistor UA e Outdoor unit heat exchanger thermistor Check No 12 Functioning e Outdoor temperature thermistor BEE Check No 17 Malfunctioning Check the electronic Replace the valve itself or expansion valve the coil Check No 17 Functioning Refer to P 176 Check No 12 Check the refrigerant line Malfunctioning Refer to the refrigerant line o Refrigerant shortage check procedure e Four way valve malfunctioning e Water mixe
28. 222 2 5 Removal of the Fan valve duct AN 225 2 6 Removal of Hygroscopic Fan Rotor Hygroscopic Fan Motor 227 2 7 Removal of Panels and Plates 0 n0nnannnnnannennnnnennnnonnennnnronrsnrenesenene 228 2 8 Removal of Electrical BOX n nnnnnenoennensnnonnonnenronrrnnrrronrsnrenrsrnnererrnerene 231 2 9 3BermovaloORPGB used ueteres A E 236 2 10 Removal of Sound Blanket arrr aa a aA 242 2 11 Removal of the Propeller Fan Fan Motor 245 2 12 Removal of Therristors iocis e a eek b cov ee d apes e ax e 248 2 13 Removal of Compresseor rora e a 250 2 14 Removal of the Four Way Valve Electronic Expansion Valve 252 Removal Procedure SiBE12 908_A Indoor Unit 1 Indoor Unit 1 1 Removal of Air filter Procedure MN Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Freen Pons 1 Appearance feature A N Warning Dangerous High voltage A high voltage is applied to all the electric circuits of this product including thermistors m When a signal from the remote controller is R10277 received the receiving tone sounds and the operation Signal reciever lamp flickers immediately to confirm the signal reception Eegen When the ON OFF switch is kept pressed for 5 seconds m TIMER lamp the forced cooling operation gt INTELLIGENT is performed for about 15 SEMI STEE minutes INTELLIGENT
29. Blown thermal fuse Damaged heater control part Extremely low voltage Service Diagnosis SiBE12 908_A Troubleshooting Troubleshooting Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check No 02 Refer to P 169 Is the supply voltage appropriate Modify supply voltage YES Power supply OFF Is heater well cooled Measure resistance between heater connectors Is the heater resistance appropriate YES Cool it down NO Replace heater ASSY temperature At normal 61 00 3 YES Is thermal fuse blown Replace heater ASSY NO Check No 02 Is a resistance of thermal thermistor at humidification fan outlet appropriate NO Replace the thermistor For details refer to Du troubleshooting YES Replace indoor control PCB A1P Main relay could be damaged When the main relay MRM10 is damaged heater and rotor do not run R14124 Service Diagnosis 164 SiBE12 908_A Troubleshooting 2 37 Humidifying Fan Outlet Thermistor Abnormality Heater Temperature Abnormality Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes 165 e DL Ae Detect short circuit and wire breakage of humidification thermistor When humidifying fan outlet temperature becomes high th
30. Function and Control SiBE12 908_A Function and Control Control Specification Indoor Frequency Command AD signal The difference between a room temperature and the temperature set by the remote controller is taken as the AD signal and is used for frequency command Temperature D Temperature AD Temperature AD Temperature AD difference signal difference signal difference signal difference signal Th OFF 5 d f tfi of t 9 oq 085 1 25 s 45 9 es o 10 2 so e so a 79 E 15 sa as 7 ss 8 75 LE Values depend on the type of indoor unit Th OFF Thermostat OFF Indoor Unit Capacity S value The capacity of the indoor unit is a S value and is used for frequency command ew 25 25 35 Frequency Initial Setting Outline gt When starting the compressor or when conditions are varied due to the change of the operating room the frequency must be initialized according to the total of a maximum AD value of each room and a total value of Q 20 of the operating room the room in which the thermostat is set to ON Q value Indoor unit output determined from indoor unit volume airflow rate and other factors PI Control Determine Frequency Up Down by AD Signal 1 P control Calculate a total of the AD value in each sampling time 20 seconds and adjust the frequency according to its difference from the frequency previously calculated 2 I control If the operating frequ
31. HH2 MRM10 MRM20 TFU THERMAL FUSE S501 X1A X5A besse HK1 HK2 HK3 CONNECTOR MRK MR4 MAGNETIC RELAY V2 V3 VARISTOR O PROTEST ERO IPM1 IPM701 INTELLIGENT POWER MODULE N NEUTRAL X1M X2M TERMINAL STRIP l L LIVE PCB1 PRINTED CIRCUIT BOARD Y1E Y2E ELECTRONIC EXPANSION VALVE COIL 3D062655A L1 COIL Q1L OVERLOAD PROTECTOR Op REVERSING SOLENOID VALVE COIL L1R REACTOR R1T R8T THERMISTOR Z1C Z2C Z3C FERRITE CORE Appendix 264 Warning e Daikin Industries Ltd s products are manufactured for export to numerous countries throughout the world Daikin Industries Ltd does not have control over which products are exported to and used in a particular country Prior to purchase please therefore confirm with your local authorised importer distributor and or retailer whether this product conforms to the applicable standards and is suitable for use in the region where the product will be used This statement does not purport to exclude restrict or modify the application of any local legislation e Ask a qualified installer or contractor to install this product Do not try to install the product yourself Improper installation can result in water or refrigerant leakage electrical shock fire or explosion e Use only those parts and accessories supplied or specified by Daikin Ask a qualified installer or contractor to install those parts and accessories Use of unauthorised parts and accessories or improper installat
32. Insert the fan motor approx omm 2 Tighten the screw until it stops Then turn the screw 4 Remove the bearing in one scroll 3 Move the fan rotor and confirm the fan motor and the fan rotor are installed appropriately 4 Tighten the screw completely if appropriate 5 If not appropriate go back to Removal Procedure 212 Outdoor Unit 2 Outdoor Unit 2 1 Removal of Humidifier Unit Procedure before disassembling work Sep Procede O O Pons 1 External appearance Air outlet Io 4 R9880 Air inlet Ki p A S Y Y pu 2 Removal of the humidifier unit 1 Remove the 4 screws and lift up the top panel to remove 213 Warning Be sure to wait 10 minutes or more after turning off all power supplies V M 7G A IU E Removal Procedure SiBE12 908_A Outdoor Unit Step Procedure 2 Remove the screw and the hose cover 3 Take out the humidifying hoses Humidifying hose R9884 4 The figure shows the B Be sure to wait 10 minutes arrangement of the or mor
33. ROOMB _ HEAT EXCHANGER 48CUT E 6 4 CuT THERMISTOR 4 8CuT d FAN MOTOR i 9 5CuT EEN FAN GAS LINE GAS PIPE STOP VALVE Y MUFFLER THERMISTOR 95CuT lt BOOM A S BRANCH 9 5 CuT GAS LINE M SR MUFFLER THERMISTOR S i FOUR WAY VALVE 9 5CuT gt 9 5CuT_ NH ROOM B ON HEATING VC 12 7 CuT L 7 9CuT SSS MUFFLER SSS SS DISCHARGE PIPE THERMISTOR 9 5CuT 9CuT REFRIGERANT FLOW COOLING ACCUMULATOR HEATING COMPRESSOR EE 3D063309 Appendix 262 Wiring Diagrams SiBE12 908_A 2 Wiring Diagrams 2 1 Indoor Units CTXU25 35 42 50G2V1B WWW PA AE AA A AAA A FIELD WIRING S46 PCB1 F1U H1 THE MAIN POWER SUPPLY IS l l l 1 S x RR RECTIFIER X1M l 2 EN V1 Di ES EE BLK 1 V EN WHT 2 OUTDOOR E S 4 RED 3 T GRN CAUTION l H n SER NOTE THAT OPERATION WILL ES YLW RESTART AUTOMATICALLY IF l l l l l Cx S TURNED OFF AND THEN BACK ag of RED ON AGAIN SP esee eR J 09 I SEBES FG FRAME GROUND Oort BRN F1U FUSE oH ORG l lo war H1P MULTI MONITOR E M1F H2P H3P PILOT LAMP INTELLIGENT EYE M1F FAN MOTOR SENSOR PCB1 PCB4 PRINTED CIRCUIT BOARD R1T R2T THERMISTOR l l l l l l l l l l M1S M3S SWING MOTOR l l l l l l l l l l l
34. Refer to the Check Method 1 on page 104 for detail 1 Service check mode You can identify the error code for diagnosis Refer to the Check Method 2 on page 105 for detail Function and Control SiBE12 908_A Function and Control Main Functions 2 Trial operation mode You can select a mode for trial operation on the remote controller The operation continues for approx 30 minutes Refer to the installation manual on page 66 for detail 3 Pipe set mode You can set the humidifying hose length and then check the preset value Refer to the installation manual on page 65 for detail 4 Pipe check mode You can check the preset value of the humidifying hose length Refer to the installation manual on page 65 for detail Drying mode Hose Dry operation is a forced drying operation for humidifying hose The operation continues for approx 30 minutes Cooling heating or dry operation is not available during Hose Dry operation Refer to the installation manual on page 66 for detail e OI 6 Humidifying airflow rate setting mode Humidifying airflow rate setting mode allows to fine tune the speed of the humidifying fan around 10 relative to Automatic Set high to increase the airflow rate or set to low to decrease 7 Monitor brightness setting mode The brightness of the multi colored indicator lamp can be adjusted H high L low or OFF 36 Function of Thermistor SiBE12 908_A 2 Function of The
35. Turn on the power again System restarted Repeat a couple of times Replace the outdoor unit PCB R9451 156 Troubleshooting SiBE12 908_A 2 33 Outdoor Unit PCB Abnormality or Communication Circuit Abnormality nd 4 I p Remote Controller Display Method of Detect within the program of the microcomputer that the program is in good running order Malfunction Detection Malfunction 1 When the program of the microcomputer is in bad running order Decision 2 When indoor outdoor unit signal transmission can not be performed for more than 15 Conditions seconds 3 When zero cross signal can not be detected for more than 10 seconds Supposed B Display disabled due to power supply fault Causes Communication circuit fault in outdoor unit PCB B Out of control of microcomputer caused by external factors e Noise e Momentary voltage drop e Momentary power loss B Defective outdoor unit PCB B Defective thermal fuse in outdoor terminal board 157 Service Diagnosis SiBE12 908_A Troubleshooting Service Diagnosis Troubleshooting Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check indoor unit also because a communication circuit fault may be caused by the problem related to the indoor unit Check supply voltage Rated voltage NO Rectify the power supply YES Check the varistor on the outdoor unit PCB YES Is it da
36. hygroscopic fan Check No 05 YES Outdoor fan system check Does the air blow NO out from the humidifying fan YES YES Is there foreign material Include inside the humidification NO hose and indoor air supply filter Heconnect properly The humidification thermistor is exclusive for fan outlet temperature Replace the thermistor Replace the heater ASSY Replace the thermistor Replace the humidifying rotor motor At HUMID HEAT mode instead of test mode the ON timing of the hygroscopic fan may delay 20 min at maximum To 75 troubleshooting Remove foreign material Replace the outdoor unit PCB R14125 166 Troubleshooting SiBE12 908_A 2 38 Lights out of Microcomputer Status Lamp Remote No display Controller Display Method of When a microcomputer fault is detected LED A turns off Malfunction Detection Malfunction Decision Conditions Supposed B Outdoor unit PCB is not power supplied Causes B Power supply failure due to noise Troubleshooting Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred NO For the unit with standby power zm on PP save function first set the ON Is correct power supplied YES timer using remote controller to Do not work on or touch release the standby power save components other than function specified part Doing so may cause a sho
37. o Good Sleep Cooling Operation Vertical Auto Swing Up and Dow O Fresh Air Supply Ventlaion o soan To 24 Hour ONOFFTimer o Comfor Aliow Mode o Night Sat Mode o Gomot Auto Fan Speed O Wemyfe Auto Resta afer Power Faure O Control indoor Unt Quiet Operation o ERN Sale Diagnosis Digital LED Display O Night Quiet Mode Automatic 1 Wiring Error Check o e S RE MR RE Horsen Function Io HIP CIO Compatible indoor Unit AutomaticDetrosing 1 Fiexible Voltage Correspondence Humistying Operation 1 o Ohargeless Program Dry Function o Either Side Drain fightorLef o moy Oo Power Selgoion 1 Lifestyle New POWERFUL Operation Hemote 5 Rooms Centralized Controller Convenience Non Inverter Control Option Normal Open Pulse Contact Option Priority Room Setting a Remote Control Adaptor Normal Open Contact Option m m gt gt N N CH CH e v LO LO CN CN gt gt x x E E O O HOME LEAVE Operation NECEM ECONO Mode Option RcwhBak gy Io ememweDspy o Note O Holding Functions No Functions Cooling Heating Mode Lock 24 DIII NET Compatible Adaptor List of Functions 2 Functions SiBE12 908_A n n Basic Inverter with Inverter Power Control NE mM Health amp Air Purifying Filter MES d Operation Limit for Cooling CDD 10 46 en
38. room B on the wiring and piping for each indoor unit No cooling no heating Has the overall length of the humidifying hoses been set No humidification or loud operating correctly Note 1 sound Are the connections of the humidifying hoses correct Note 2 Ke NEE or unusual sound in Note 1 Set the overall length of the humidifying hoses correctly according to the operation manual after the humidifying hoses are installed Is the wiring in accordance with the specifications Operation failure burning Note 2 Check that the connections of the humidifying hoses are correct Ventilation in room A tap H y Go to room B and check that there is no air distribution sound from the indoor unit If air distribution sound is heard in room B interchange the humidifying hoses on the outdoor unit for rooms A and B B ATTENTION 1 Have the customer actually operate the unit while looking at the manual included with the indoor unit Instruct the customer how to operate the unit correctly particularly cleaning of the air filters operation procedures and temperature adjustment 2 Even when the air conditioner is not operating it consumes some electric power If the customer is not going to use the unit soon after it is installed turn OFF the breaker to avoid wasting electricity 3 If additional refrigerant has been charged because of long piping list the amount added on the nameplate on the reverse side of the stop valve cover
39. 14 C 3P234246 1 Installation Operation Manual 78 System Configuration SiBE12 908_A 2 System Configuration After the installation and test operation of the room air conditioner have been completed it should be operated and handled as described below Every user would like to know the correct method of operation of the room air conditioner to check if it is capable of cooling or heating well and to know a clever method of using it In order to meet this expectation of the users giving sufficient explanations taking enough time can be said to reduce about 80 of the requests for servicing However good the installation work is and however good the functions are the customer may blame either the room air conditioner or its installation work because of improper handling The installation work and handing over of the unit can only be considered to have been completed when its handling has been explained to the user without using technical terms but giving full knowledge of the equipment 79 Installation Operation Manual SiBE12 908_A Operation Manual 3 Operation Manual 3 1 Names of Parts Name of Parts B indoor Unit 1 Air filter 2 Titanium apatite photocatalytic air purifying filter These filters are attached to the inside of the air filters 3 Air inlet 4 Front panel 5 Panel ta
40. COOL HEAT FAN Operation eese 82 3 3 Adjusting the Airflow DirectiOn oocccoocnccocnccccnonconnnonannnnannnnannnonons 84 3 4 HUMID HEAT Operation occccocccccccnccccnccconccnncncnnnnnonnnnonnnnnonannonononenannnnos 86 3 5 FRESHAIR SUPPLY VENTIEATIQN ieu o oa 88 3 6 COMFORT AIRFLOW and INTELLIGENT EYE Operation 89 3 7 POWERFUL and OUTDOOR UNIT QUIET Operation 91 38 ECONO Operas desti ip RP Ee heet 92 9 9 TIMER OPSTAO eege aaa 93 340 WEEKLY DIMER Operation oer ati dem em Delitos 95 3 1 Note Tor MUI System dieta ias 100 Part 6 Service Diagnosis rre rere annua aa uuuaa a 101 1 Service Check Function ccccoccccoccncccnccnccocnnocannnononnnonanononnnnonannnnnnnnonnns 103 1 1 Failure Diagnosis with Multi Colored Indicator Lamp 103 1 2 Failure Diagnosis by LED Indication eesesssssse 103 1 3 Failure Diagnosis by Remote Controller 104 2 VFOUDISSMOOUN Diana 107 2 1 Error Code Indication by Remote Controller 107 2 2 Air conditioner does not run 109 2 3 Air conditioner runs but does not cool heat 112 2 4 When operation starts safety breaker work 114 2 5 Air conditioner makes big noise and vibration 116 2 6 Airis not humidified enough ccooccccocccccc
41. Detection Malfunction Decision Conditions Incorrect temperature setting Incorrect combination of indoor unit and outdoor unit Blocked air filter Insufficient power Refrigerant piping is too long Improper setting of piping length Defective field piping squeezed etc Supposed Causes Service Diagnosis 112 Troubleshooting Troubleshooting Check No 02 Refer to P 169 AP Warning 113 SiBE12 908_A Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred NO Thermostat off Set the temperature properly NO Is the set temperature correct YES Is there required installation space Isn t it spac Secure required space short circuited YES Is the indoor unit compatible for connecting with the outdoor unit NO Check the compatibility Arrange for a correct combination YES YES Is the air filter blocked Clean the air filter NO Is the load i e size of NO the room appropriate for the capacity Replace with an appropriate model or add another unit YES e Too long Is the refrigerant piping Piping length is to be within too long the specified range Appropriate Check No 02 Is the room temperature thermistor or the outdoor temperature thermistor in good working order NO Replace the thermistor YES Is the supplied voltage A G
42. EYE ON OFF switch Room temterature and humidity sensors R10278 2 Removing the air filter 1 Hold the right and left projections of the front panel and open the panel to the position where it stops Front panel R10279 2 Slightly push up the The air filter is marked for knob at the center of difference between the right the air filter and release 4 and left sides the hook The left filter has the LEFT ES mark 3 Pull out the air filter E Y Insert the air filter with the downwards and remove FRONT mark faced up it LEE SS The air filter can be set mark easily by inserting it along Air filter the guides Be sure to insert the hooks at 2 lower positions when mounting the air filter R10280 Removal Procedure 182 Indoor Unit 3 Removing the titanium apatite photocatalytic air purifying filter The titanium apatite photocatalytic air purifying filter is attached to the back of the air filter Remove the titanium apatite photocatalytic air purifying filter frame by bending the air filter and unfastening the projections from the air filter frame Remove the titanium apatite photocatalytic air purifying filter from its frame at 5 positions by bending it 183 Procedure Air filter Y z 5 LN SAITO TIT Dee Y es 7 LT
43. Even though the stop valve is fully closed the refrigerant may slowly leak out do not leave the flare nut removed for a long period of time 2 Do not overfill with refrigerant This will break the compressor Installation Operation Manual 72 Installation Manual SiBE12 908_A Refrigerant Piping Work Precautions for Laying Refrigerant Piping Wall Be sure to place a cap e 3 Rai If no fl e Cautions on pipe handling eo Coe 1 Protect the open end of the pipe against dust and moisture Actu uM 2 All pipe bends should be as gentle as possible Use a pipe bender for bending dirt or water out Selection of copper and heat insulation materials Pinging tape Inter unit wiring When using commercial copper pipes and fittings observe the following Gas pipe 1 Insulation material Polyethylene foam SE EES Heat transfer rate 0 041 to 0 052W mK 0 035 to 0 045kcal mh C Refrigerant gas pipe s surface temperature reaches 110 C max Gas pipe Choose heat insulation materials that will withstand this temperature SEN 2 Be sure to insulate both the gas and liquid piping and to provide insulation Gereke dimensions as below hose Liquid pipe insulation Liquid pipe Gas side laude Gas pipe thermal insulation Liquid pipe O D 9 5mm O D 12 7mm O D 6 4mm I D 12 15mm I D 8 10mm d Thickness Minimum bend radius Thickness 13mm Min 30mm or more 40mm or more 30mm or more Thickness 0 8mm C1220T O
44. Om mme O EE Airflow Rate Propeller 63 50 Dimensions HxWxD 675x765x285 k m m g e KEE ISomdPower BA 8 d E Piping Connection 9 9 5x1 012 7x1 18 Boh Liquid and Gas Pipes 3 for Power Supply 4 for Interunit Wiring Max Interunit Piping Length 30 for Total of Each Room GENEE 15 for One Room Min Interunit Piping Length 3 for One Room Amount of Additional Charge 20 20m or more 15 between Indoor Unit and Outdoor Unit Max Installation Height Difference 7 5 between Indoor Units Drawing No 3D063330A mm 9 A d 48 50 Note 1 The data are based on the conditions shown in the table below Conversion Formulae Piping Length kcal n kWx860 Btu h kWx3412 cfm m minx35 3 Indoor 27 CDB 19 CWB Indoor 20 CDB 5m Outdoor 35 CDB Outdoor 7 CDB 6 CWB 2 x In humidifying operation the operation sound increases by about 3dB in the outdoor unit 7 Specifications SiBE12 908_A Part 3 Printed Circuit Board Connector Wiring Diagram 1 Printed Circuit Board Connector Wiring Diagram 9 Ee E Tale leieie UNS EE 9 1 2 QUID UNIS ist Sucina 11 Printed Circuit Board Connector Wiring Diagram 8 Printed Circuit Board Connector Wiring Diagram SiBE12 908_A 1 Printed Circuit Board Connector Wiring Diagram 1 1 Indoor Units Connectors PCB 1 Control PCB 1 S1 Connector for DC fan motor 2 S21 Connector for centralized
45. Replace the fan command pulse motor and the indoor generated PCB Replace the indoor NO unit PCB Replace the fan motor Is the rotation number command pulse generated Replace the indoor unit PCB R9465 124 Troubleshooting SiBE12 908_A 2 10 Thermistor or Related Abnormality Indoor Unit Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions d Note Supposed Causes Troubleshooting Check No 02 Refer to P 169 125 CU L S a lt gt 0 The temperatures detected by the thermistors are used to determine thermistor errors When the thermistor input is more than 4 96 V or less than 0 04 V during compressor operation reference When above about 212 C less than 120 Q or below about 50 C more than 1 860 KQ The values vary slightly in some models B Faulty connector connection B Faulty thermistor B Faulty PCB MN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check the connector connection Correct the connection Check No 02 Check the thermistor resistance value Replace the thermistor Replace the indoor unit PCB Replace the indoor unit PCB R9466 CH Heat exchanger thermistor L5 Room temperature thermistor Service Diagnosis SiBE12 908_A Troubleshooting 2 11 Humidity Sensor Abnormality Rem
46. Replace the outdoor fan motor If OK in both steps 2 and 4 Replace the PCB lt For hygroscopic fan motor gt Check that the connectors HK1 HK2 HK3 for proper connection 1 Check that the power supply voltage is applied between HK1 and HK3 2 If NG in step 1 Defective PCB Replace the PCB SW power supply Hygroscopic fan motor Outdoor fan motor Humidifying fan motor Four way valve When the FU2 is melted check the rotor motor for proper function 178 Check SiBE12 908_A 3 13 Main Circuit Short Check Check No 29 d Note Check to make sure that the voltage between and of the diode bridge DB1 is approx O V before checking B Measure the resistance between the pins of the DB1 as below B lf the resistance is ee or less than 1 KQ short circuit occurs on the main circuit terminal of the tester in case of digital 2 3 2 3 terminal terminal of the tester d case of digital 2 3 2 3 ue several KQ several KQ Fus zgn 2504 y 1 opno oo oo ngb 2P2 35040 R14048 179 Service Diagnosis SiBE12 908_A 3 14 Four Way Valve Performance Check Check No 31 lt Caution on resetting the power supply gt Be sure to wait for 30 sec or more after turning off the power supply Turn off the power and turn it on again S80 voltage at NO DC O V with outdoor unit on YES Four way valve coil Start th
47. Trial Operation and Testing 1 Trial operation and testing 1 1 Measure the supply voltage and make sure that it falls in the specified range 1 2 Trial operation should be carried out in either cooling or heating mode e n cooling mode select the lowest programmable temperature in heating mode select the highest programmable temperature 1 Trial operation may be disabled in either mode depending on the room temperature Use the remote controller for trial operation as described below 2 After trial operation is complete set the temperature to a normal level 26 C to 28 C in cooling mode 20 C to 24 C in heating mode 3 For protection the system disables restart operation for 3 minutes after it is turned off 1 3 To perform a test run for HUMID HEAT operation activate test run mode from the remote controller following the instructions below and select the HUMID HEAT operation 1 4 Carry out the test operation in accordance with the operation manual to ensure that all functions and parts such as louver movement are working properly The air conditioner requires a small amount of power in its standby mode If the system is not to be used for some time after installation shut off the circuit breaker to eliminate unnecessary power consumption e f the circuit breaker trips to shut off the power to the air conditioner the system will restore the original operation mode when the circuit breaker is opened again Trial operation fr
48. YES Replace indoor unit PCB R9453 Service Diagnosis SiBE12 908_A Troubleshooting 2 34 Signal Transmission Error on Outdoor Unit PCB Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Service Diagnosis ni po Communication error between microcomputer mounted on the main body and inverter m When the data sent from the microcomputer of the inverter can not be received successively for 9 seconds the unit shuts down B Fault counter is reset when the data from the microcomputer of the inverter can be successfully received B Defective outdoor unit PCB B Disconnection or breakage of harness between PCBs 160 Troubleshooting SiBE12 908_A Troubleshooting Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Turn off the power and turn it on again Replace the outdoor unit PCB Error again The cause can be an external factor other than the malfunction Observe the operating condition in long term R9454 161 Service Diagnosis SiBE12 908_A 2 35 Fan Motor System Abnormality Fan Lock Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Check No 23 Refer to P 177 Service Diagnosis Dx C 3 Troubleshooting During humidifying fan motor running
49. after recovering from a power failure Timer ON OFF settings are cleared when compressoris Remote controller Fan stop OFF on thermostat setting effective only at cooling operation Fan speed setting Fan speed setting Fan rpm is set to 0 UG For the location of the jumper and the switch refer to page 10 for detail Others 258 Application of Silicon Grease to a Power Transistor and a Diode Bridge SiBE12 908_A 5 Application of Silicon Grease to a Power Transistor and a Diode Bridge Applicable All outdoor units using inverter type compressor for room air conditioner Models When the printed circuit board of an outdoor unit is replaced it is required that silicon grease 1 is certainly applied to the heat radiation part the contact point to the heat radiation fin of the power transistor and diode bridge 1 Parts number of the silicon grease 1172698 Drawing number 3FB03758 1 Details The silicon grease is an essential article for encouraging the heat radiation of the power transistor and the diode bridge Applying the paste should be implemented in accordance with the following instruction Remark There is the possibility of failure with smoke in case of bad heat radiation B To completely wipe off the old silicon grease on a heat radiation fin To evenly apply the silicon grease to the whole B Do not have any foreign object such as solder or paper waste between the power transistor the diod
50. all power supplies before disassembling work Step Procedure Points 1 External appearance Liquid side 2 Remove the 8 screws to remove the front panel Removal Procedure o Gas side Ux B Remove the humidifying unit B Do not release the mounting plate at this point R9929 A AFA Yy Outdoor air thermistor Y EH Zi SN ER Batz l B The front panel has 4 hooks ZA Q E E ai E e ATL gS AY B The bell mouth can not be removed 228 229 Outdoor Unit SiBE12 908_A Sup Procedure Points 3 Remove the 4 screws of the discharge grille a ME E Y Y S A Sy T A O A l 1 S T l R10345 4 Release the 4 hooks m When reassembling make and remove the sure to fit the 4 hooks discharge grille XT R9932 5 Remove the 2 screws of the stop valve cover and remove it Stop valve cover R9933 Removal Procedure SiBE12 908_A Outdoor Unit Procedure B When reassembling the stop valve cover make sure to fit the 4 hooks
51. and lift the grille up to unfasten the left hook R10291 4 Putyour fingers into the front grille and lift the grille up to unfasten the center hook R10292 Removal Procedure Indoor Unit 188 Indoor Unit 189 Procedure Unfasten the right hook also by putting your fingers into the grille and lifting it Remove the front grille by tilting the upper part to the front a and lifting and pulling the lower part toward yourself b R10293 SiBE12 908_A Caution on Mounting m When mounting the front grille make sure that the 3 hooks are fastened as they were Removal Procedure SiBE12 908_A Indoor Unit 1 4 Removal of Horizontal Blades and Vertical Blades Procedure MN Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Removing the horizontal blade large Open the horizontal Cautions on Mounting blade large B Mount the large horizontal blade to the upper side and the small horizontal blade to the lower side Do not put them in the wrong place Horizontal blade small R10294 Unfasten the center There is a key alignment fixing shaft while mark at the right side Insert bending the horizontal the key first while turning blade slightly A ra Y SSS Vi R7922 Unfasten the left fixing After key alignment at the shaft of the ho
52. and select 57 Press the MODE button Trial operation mode is activated 6 Press the ON OFF button gt Inverter test operation starts Sa a 4 5 a a Caution 1 When the output frequency is low the LEDs blink slowly As the output frequency increases the LEDs blink quicker The LEDs look like they are lit 2 On completion of diagnose by the inverter checker be sure to re crimp the FASTON terminals Otherwise the terminals may be burned due to loosening Direction of crimp FASTON terminal R5161 174 Check SiBE12 908_A 3 9 Power Transistor Check Check No 15 B Do not touch the live parts within 10 minutes after the breaker is turned off B Even after that when you touch the parts check to see that supply voltage of the power transistor is less than 50 V with a tester m Measure resistance at connector terminal on PCB or at the relay connector terminal of a tester Power transistor UVW Power transistor UVW terminal of a tester Ge dae fei E Resistance in OK several kQ several MQ 3 10 Discharge Pressure Check Check No 16 Discharge pressure check NO Replace the compressor YES NO Is the stop valve open Open the stop valve Is the connection pipe Replace the field piping deformed H Piping Are the heat exchanger and air filter dirty Clean it Replace the compressor R9683 175 Service Diagnosis SiBE12 908_A Ch
53. damage and malfunction 2 Do not place large objects near the sensor Also keep heating units or humidifiers outside the sensor s detection area 55 Installation Operation Manual SiBE12 908_A Installation Manual Preparation before Installation 1 Removing and installing front panel e Removal method Hook fingers on the tabs on the left and right of the main body and open until the panel stops Slide the front panel sideways to disengage the rotating shaft Then pull the front panel toward you to remove it e Installation method Align the tabs of the front panel with the grooves and push all the way in Then close slowly Push the center of the lower surface of the panel firmly to engage the tabs Push the rotating shaft of the front panel into the groove 2 Removing and installing front grille as VRDSEROOK 3 locations e Removal method 1 Remove front panel to remove the air filter 2 Remove 2 screws from the front grille 3 In front of the OOO mark of the front grille there are 3 upper hooks Lightly pull the front grille toward you with one hand and push down on the hooks with the fingers of your other hand il Lightly pull the front Upper hook gr
54. discharge pipe temperature Cooling 2 rooms operation Control when the operating room is changed Control of target discharge pipe temperature Pressure equalizing control Open control when starting Heating 1 room operation Control of target discharge pipe temperature Heating 2 rooms operation 9 P Control when the operating room is changed X Control of target discharge pipe temperature Defrost control FD 1 Pressure equalizing control Heating 1 room operation Open control when starting Control of discharge pipe l thermistor disconnection Continue Pressure equalizing control x X X X H E Mi 3 49 Function and Control SiBE12 908_A Control Specification 3 12 1 Fully Closing with Power On Initialize the electronic expansion valve when turning on the power set the opening position and develop pressure equalizing 3 12 2 Pressure Equalization Control When the compressor is stopped the pressure equalization control is activated The electronic expansion valve opens and develops the pressure equalization 3 12 3 Opening Limit Outline Limit a maximum and minimum opening of the electronic expansion valve in the operating room Detail A maximum electronic expansion valve opening in the operating room 450 pulses A minimum electronic expansion valve opening in the operating room 60 pulses The electronic expansion valve is fully closed in the room where cooling is stop
55. fan motor system abnormality is identified based on the fan speed rpm detected by Hall IC Humidifying fan When fan speed does not reach 100 rpm within 12 seconds after fan motor start up Humidifying fan B Defective motor Hall IC for humidifying fan B Breakage of relay harness or loose connector B Detection fault of fan speed due to defective outdoor unit PCB Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Is humidifying fan motor harness S72 connected Run the humidifying operation Check No 23 Check for the rotation pulse input of outdoor unit PCB Reconnect properly R10340 162 Troubleshooting SiBE12 908_A 2 36 Heater Wire Abnormality Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes 163 LI a U ea A fault is identified when the outlet temperature of humidifying fan does not reach a certain temperature within a given time after the heater turned on When the temperature detected by the thermistor is lower than the outdoor temperature at heater turned off 5 C and this condition continues for 30 minutes Breakage of heater filament Breakage of heater harness Abnormal temperature detected by outdoor temperature thermistor Abnormal temperature detected by humidification fan outlet thermistor Damaged main relay
56. following conditions 1 to 5 Humidifying are met at the same time Operation 1 Indoor heat exchanger temperature is 12 C or more 2 3 d Note m Function and Control Outdoor temperature is from 10 C to 24 C meanwhile in test operation up to 34 C is possible Humidifying operation does not work under 10 C Approx 1 minute has already passed after heating operation startup See Note Heating operation does not work to its full capacity Meanwhile the continuous humidification is selected humidifying operation has the priority Room humidity is under 70 RH Exclude the case when it is recovered from thermostat off or when the defrosting operation finished 22 Main Functions How to Check the Motion of Humidifying Operation Humidity Fluctuation by Temperature Settings 23 SiBE12 908_A You can check whether the humidifying unit is in good working order If you set HUMID HEAT test operation refer to the installation manual for details you can check even beyond the range of the conditions for humidifying operation 1 Hygroscopic fan Air is exhaled from the front exhaust outlet of outdoor unit 2 Humidifying fan heater damper Warm air is blown from the duct of outdoor unit 3 Humidification rotor The rotor is rotating with top panel off As for the performance estimate from psychrometric chart with the measured temperature and humi
57. heard press MODE button again 4 Pressing TEMP A button changes the humidifying hose length You may set the hose length to 6 levels D mn amp p In p 66 Im iim SC 3 H 5 8 ILL 30 D 85020 80 DD J A A A I1 5 Hold MODE button for more than 2 seconds The display changes to pr Pipe check mode Pipe set mode Hose length check 6 Press MODE button again to activate the pipe check mode 7 Press TEMP A button and select the hose length Beep sound indicate that the setting of the remote controller accords or disaccord with the unit accord a long beep e disaccord a short beep If you set the wrong humidifying hose length press CANCEL button The display returns to step 4 Reset the hose length 8 Hold MODE button for more than 5 seconds The humidifying hose length setting is complete and the display returns to normal 2 When the unit cannot be powered on When setting the humidifying hose length without powering on the unit the indoor unit does not receive the information at step 3 and 5 shown above However the remote controller stores the humidifying hose length information When the customer uses the unit the humidifying hose length information is send to the indoor unit to be set 13 65 Cancel Set point long beep Installation Operation Manual SiBE12 908_A Installation Manual
58. in operation in DRY or FAN mode p gt While not in operation in AUTO COOL HEAT or HUMID HEATING mode p 1 34 e POWERFUL operation starts in 5 seconds and ends in 20 minutes Then the system automatically operates again with the previous settings which were used before POWERFUL operation e When using POWERFUL operation there are some functions which are not available E To cancel operation 2 Press POWERFUL and QUIET button Press the button to select Blank e gt and N are disappears from the LCD NOTE E Note on POWERFUL operation e POWERFUL operation cannot be used together with ECONO QUIET or COMFORT operation Priority is given to the function of whichever button is pressed last e POWERFUL operation can only be set when the unit is running Pressing the operation stop button causes the settings to be canceled and the disappears from the LCD e POWERFUL operation will not increase the capacity of the air conditioner if the air conditioner is already in operation with its maximum capacity demonstrated In COOL and HEAT mode To maximize the cooling heating effect the capacity of outdoor unit must be increased and the airflow rate be fixed to the maximum setting The temperature and airflow settings are not variable In DRY mode The temperature setting is lowered by 2 5 C and the airflow rate is slightly increased In AUTO mode The temperature can be changed
59. items can also lead to serious accidents under some conditions if they are not followed Therefore be sure to observe all the safety caution items described below B About the pictograms This symbol indicates the item for which caution must be exercised The pictogram shows the item to which attention must be paid This symbol indicates the prohibited action The prohibited item or action is shown in the illustration or near the symbol e This symbol indicates the action that must be taken or the instruction The instruction is shown in the illustration or near the symbol B After the repair work is complete be sure to conduct a test operation to ensure that the equipment operates normally and explain the cautions for operating the product to the customer 1 1 1 Cautions Regarding Safety of Workers Be sure to disconnect the power cable plug from the plug socket before disassembling the equipment for repair Working on the equipment that is connected to the power supply may cause an electrical shock If it is necessary to supply power to the equipment to conduct the repair or inspecting the circuits do not touch any electrically charged sections of the equipment If the refrigerant gas is discharged during the repair work do not touch the discharged refrigerant gas The refrigerant gas may cause frostbite When disconnecting the suction or discharge pipe of the compressor at the welded section evacuate the refrigerant gas comp
60. movements of them in the areas The airflow direction will be leftward if there are people in both areas 1 and 2 or if there is a person right in front of the sensor Because of the position of the sensor people might be exposed to the airflow of the indoor unit if they are close to the border between areas 1 and 2 If there are people close to the border between areas or in both areas it is recommended to use the COMFORT AIRFLOW and INTELLIGENT EYE functions simultaneously When both of them are in use flaps and louvers are controlled and the indoor unit will not direct the airflow towards the people e Sensor detection sensitivity changes according to indoor unit location the speed of passersby temperature range etc The sensor also mistakenly detects pets sunlight fluttering curtains and light reflected off of mirrors as passersby NIGHT SET MODE page 19 will not go on during use of INTELLIGENT EYE operation NOTE B To combine COMFORT AIRFLOW operation and INTELLIGENT EYE operation The air conditioner can go into operation with the COMFORT AIRFLOW and INTELLIGENT EYE functions combined The flaps adjust the airflow direction upward while in cooling operation and downward while in heating operation during which the sensor of the INTELLIGENT EYE is working to detect the movement of people When the sensor detects people the louvers will direct the airflow in such way that it will not be blown directly on them If
61. of heat exchanged air large Amount of heat gt Amount of heat exchanged air small exchanged air small D D O O SEN oa o low speed freq 50 Hz capacity 60 Hz freq variable Refrigerant circulation rate low R2812 Function and Control 14 Main Functions SiBE12 908_A Inverter Features The inverter provides the following features The regulating capacity can be changed according to the changes in the outdoor air temperature and cooling heating load Quick heating and quick cooling The compressor rotational speed is increased when starting the heating or cooling This enables a quick set temperature Air discharge temperature 45 C Start mm 60 120 300 seconds R1187 Even during extreme cold weather the high capacity is achieved It is maintained even when the outdoor air temperature is 2 C Comfortable air conditioning A detailed adjustment is integrated to ensure a fixed room temperature It is possible to air condition with a small room temperature variation Energy saving heating and cooling Once the set temperature is reached the energy saving operation enables to maintain the room temperature at low power Frequency Limits The following table shows the functions that define the minimum and maximum frequency Frequency limits Limited during the activation of following functions Low B Four way valve operation compensation Refer to page 43 High B Discharge pipe temp
62. only in powerful auto operation In FAN mode The airflow rate is fixed to the maximum setting In HUMID HEAT mode The operation mode changes to HEAT mode Ei Note on OUTDOOR UNIT QUIET operation This function is available in COOL HEAT and AUTO modes This is not available in FAN and DRY mode e POWERFUL operation and OUTDOOR UNIT QUIET operation cannot be used at the same time Priority is given to the function of whichever button is pressed last e OUTDOOR UNIT QUIET operation will drop neither the frequency nor fan speed if the frequency and fan speed have been already dropped low enough 91 Installation Operation Manual SiBE12 908_A 3 8 ECONO Operation ECONO Operation Operation Manual WDAIKIN FAN ON OFF 7 SEU GG he POWERFUL COMFORT SWING ae as QUIET SENSOR WEEKLY COPY NEXT SELECT v ON o os GY NOTE ECONO operation is a function which enables efficient operation by limiting the maximum power consumption value This function is useful for cases in which attention should be paid to ensure a circuit breaker will not trip when the product runs alongside other appliances B To start ECONO operation 1 Press ECONO button e N is displayed on the LCD E To cancel ECONO operation 2 Press ECONO button again e N disappears from the LCD Running current and power consumption PCT a es E Maximum du
63. output current and for protecting compressor monitor the OL operation B If the OL compressor head temperature exceeds 120 130 C depending on the model the compressor gets interrupted B If the inverter current exceeds 22 A the system shuts down the compressor 3 13 3 Refrigerant Shortage Control Outline Function and Control If a power consumption is below the specified value in which the frequency is higher than the specified frequency it must be regarded as refrigerant shortage In addition to such conventional function if the discharge pipe temperature is higher than the target discharge pipe temperature and the electronic expansion valve is fully open more than the specified time it is considered as an refrigerant shortage Refrigerant shortage zone Power consumption 40 class 51 Hz Frequency 50 class 48 Hz R7164 With the conventional function a power consumption is weak comparing with that in the normal operation when refrigerant is insufficient and refrigerant shortage is detected by checking a power consumption Refrigerant shortage zone R1391 When operating with refrigerant shortage although the rise of discharge pipe temperature is great and the electronic expansion valve is open it is presumed as refrigerant shortage if the discharge pipe temperature is higher than the target discharge pipe temperature Refer to Refrigerant Shortage on page 154 for detail 52 Control Specificat
64. pressure on the gauge manifold to the gas stop valve service port for rooms A and B V 2 Fully open gauge manifold s low pressure valve Lo and high pressure valve Hi uva 3 Apply vacuum pumping for 20 minutes or longer Check that the compound pressure gauge reads 0 1MPa 76cmHg I 4 After checking the vacuum close the low pressure and high pressure valves on the gauge manifold and stop the vacuum pump Leave as is for 4 5 minutes and make sure the coupling meter needle does not go back If it does go back this may indicate the presence of moisture or leaking from connecting parts After inspecting all the connection and loosening then retightening the nuts repeat steps 2 gt 3 gt 4 S7 5 Remove the valve caps on the liquid and gas stop valves at the pipes for rooms A and B AL 6 Open the valve rods on the liquid stop valves for rooms A and B by turning them 90 counterclockwise using a hex wrench Close them 5 seconds later and check for gas leaks After checking for gas leaks check the areas around flares on the indoor unit and the areas around flares and valve rods on the outdoor unit by applying soapy water Wipe down thoroughly after the check is complete 7 Remove the charge hose from the gas stop valve service ports at the pipes for rooms A and B and completely open the liquid and gas stop valves at the pipes for rooms A and B Stop the valve rods as far as they go and do not attempt to turn
65. so as to extinguish fire immediately A N Warning Ventilate when refrigerant leaks during the work If refrigerant contacts fire it causes to arise toxic gas A N Warning Be careful about the four way valve pipes and so on which were heated up by a gas brazing machine so as not to get burnt your hands A N Caution From the viewpoint of global environment protection do not discharge the refrigerant gas in the atmosphere Make sure to recover the refrigerant gas with the recovery system Removal Procedure SiBE12 908_A Outdoor Unit 2 14 Removal of the Four Way Valve Electronic Expansion Valve Procedure MN Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure 1 Removal of the B Remove the sound blanket peripheries beforehand Remove 7 Terminal cover of l Warning compressor N LADG Be careful about the four way Four way valve coil valve pipes and so on which Electronic IK BASS were heated up by a gas expansion valve coil brazing machine so as not to not to burn them by a SHA A get burnt your hands gas brazing machine 7 MN lia Caution From the viewpoint of global environment protection do not discharge the refrigerant gas in the atmosphere Make sure to recover the refrigerant gas with the recovery system 1 Lift up
66. sustain no external stress D Wire retainer Use the specified wire type Firmly fix the wires with the terminal screws ESN N WARNING 1 Do not use tapped wires strand wires extensioncords or starburst connections as they may cause overheating electrical shock or fire 2 Do not use locally purchased electrical parts inside the product Do not branch the power for the drain pump etc from the terminal block Doing so may cause electric shock or fire 7 Drain piping The drein toss Should be inclined downward 1 Connect the drain hose as described right No trap is permitted Do not put the end of the hose in water 2 Remove the air filters and pour some water into the drain pan to check the water flows smoothly 3 When drain hose requires extension obtain an extension hose commercially available Be sure to thermally insulate the indoor section of the extension hose E 0 Heat insulation tube field supply 4 When connecting a rigid polyvinyl chloride pipe nominal diameter 13mm directly to the drain hose attached to the S indoor unit as with embedded piping work use any D Ss 0 Sep Cc commercially available drain socket nominal diameter A Drain hose supplied with Commercially available drain Commercially available rigid 1 3mm asa Joint the indoor unit Socket polyvinyl chloride pipe nominal diameter 18mm nomi
67. the Preparation humidifier unit B Remove the top panel according to Removal of Humidifier Unit Duct adsorption side B The humidifying rotor is located under the heater ASSY and the duct e AK up Humidifying El rotor motor PH Ce ER s i A Harness ASSY ANYS Ls IL TE OMNEA WS He Fan valve duct ASSY Humidifying thermistor 1 Remove the 4 screws of the duct on adsorption side Removal Procedure 216 Outdoor Unit SiBE12 908_A Step Procedure Points 2 Detach the harness for heater from the groove R9891 3 Remove the duct Duct adsorption side 4 Helease the lead wire for humidifying rotor motor from 2 hooks Un D E E gt V i H ie oz 217 Removal Procedure Outdoor Unit SiBE12 908_A Bom 4 DA Se B Do not dismount the heater Le d J O Best C A NS T ALPS S LO EX GK 7A ESA ZAE Bell mouth Procedure an motor lead wire f IN P X Remove the bell mouth to remove the heater on adsorption side Remove the 2 screws Detach the lead wire for fan motor from the 2 Removal of the humidifying rotor 218 Removal Procedure Outdoor Unit SiBE12 908_A Step Procedure 3 Lift the humidifying B A
68. the Remove them NO Check No 23 Check the outdoor unit PCB for rpm command pulse input Try to operate l NO Is the pulse input Replace the outdoor fan motor YES Replace the outdoor unit PCB R9440 135 Service Diagnosis SiBE12 908_A Troubleshooting 2 20 Input Overcurrent Detection Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Service Diagnosis A q RI Detect an input overcurrent by checking the inverter power consumption or the input current detected by CT with the compressor running m When A or more of CT input continues for 2 5 seconds B The compressor stops if the error occurs and restarts automatically after 3 minutes standby A Overcurrent due to defective compressor Overcurrent due to defective power transistor Overcurrent due to defective electrolytic capacitor of inverter main circuit Overcurrent due to defective outdoor unit PCB Detection error due to defective outdoor unit PCB Overcurrent due to short circuit 136 Troubleshooting Troubleshooting 137 Check No 03 Refer to P 170 Check No 11 Refer to P 171 Check No 14 Refer to P 173 Check No 16 Refer to P 175 SiBE12 908_A MN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Input over current may be caused by improper wiring inside the unit If
69. the drain pipe 11 63 GE ___ _ plastic tape lt x WC E A Mounting plate Wrap insulating tape around the bent portion of refrigerant pipe Overlap at least half the width of the tape with each turn pipes Ly N SSSSSANSNSSSSSSSSSSNSSS P AAA Bottom frame H M4 x 12L 2 point Insert the drain hose to this depth so it won t be pulled out of drain pipe E Inner wall Drain hose Vinyl chloride drain pipe VP 30 a a EL a a LL Ll Outer wall Installation Operation Manual SiBE12 908_A Installation Manual 6 Wiring QCA install as described in the installation manual supplied with the multi outdoor unit 1 Strip wire ends 15mm 2 Match wire colours with terminal numbers on indoor and outdoor unit s terminal blocks and firmly screw wires to the corresponding terminals Connect the earth wires to the corresponding terminals Pull wires to make sure that they are securely latched up then retain wires with wire retainer In case of connecting to an adapter system Run the remote controller cable and attach the S21 Shape the wires so that the service lid fits securely then close service lid 3 oo an ab Terminal block Firmly fix the wires with T i we Electrical component box the terminal screws 3 9 Shape wires so that the SS service lid will fit securely When wire length exceeds 10m SN use 2 0mm diameter wires Firmly secure wire retainer so that wires
70. the electronic expansion valve coils to remove it 2 Remove the putty Detach the four way valve coil and the 2 clamps and then detach the wire harnesses 3 Heat up the 2 brazed parts of the electronic expansion valve and remove it Removal Procedure 252 Outdoor Unit B Before working make sure that the refrigerant is empty in the circuit Be sure to apply nitrogen replacement when heating up the brazed part Provide a protective sheet or a steel plate so that the brazing flame cannot influence peripheries around the four way valve MN Warning Since it may happen that refrigerant oil in the compressor catches fire prepare wet cloth so as to extinguish fire immediately MN Warning Ventilate when refrigerant leaks during the work If refrigerant contacts fire it causes to arise toxic gas AP Warning Be careful about the four way valve pipes and so on which were heated up by a gas brazing machine so as not to get burnt your hands Pull out the brazed part with pliers and disconnect 253 Procedure Mia ANY nT ei WW a C wat utili ull gt SiBE12 9
71. the hooks while Release the 2 hooks on the right side bending the right side panel Lift up the fan valve duct ASSY to remove 226 Removal Procedure Outdoor Unit SiBE12 908_A 2 6 Removal of Hygroscopic Fan Rotor Hygroscopic Fan Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Removal of the Preparation hygroscopic fan rotor B Remove the humidifying ASSY A rotor according to Removal Disconnect the of Humidifying Rotor connector for fan motor c and remove the bell mouth on adsorption side Unscrew the fan fixing When reassembling align nut M6 of the the W mark and D cut of the hygroscopic fan rotor AASIAN motor shaft ASSY sirocco fan rotor le Hygroscopic I Spanner size 10mm ASSY and remove eil tan rotor 2 Removal of the BW Lift the motor cover first and hygroscopic fan motor pull out Remove the 3 screws of the motor cover Remove the hygroscopic fan motor 227 Removal Procedure SiBE12 908_A Outdoor Unit 2 7 Removal of Panels and Plates Procedure AP Warning Be sure to wait 10 minutes or more after turning off
72. there are no people the air conditioner will go into energy saving operation after 20 minutes CAUTION Do not place large objects near the sensor Also keep heating units or humidifiers outside the sensor s detection area This sensor can detect undesirable objects Do not hit or violently push the INTELLIGENT EYE sensor This can lead to damage and malfunction Installation Operation Manual 90 Operation Manual SiBE12 908_A 3 7 POWERFUL and OUTDOOR UNIT QUIET Operation POWERFUL and OUTDOOR UNIT QUIET Operation POWERFUL operation quickly maximizes the cooling heating effect in any operation mode You can get the maximum capacity OUTDOOR UNIT QUIET operation lowers the noise level of the outdoor unit by changing WDAIKIN the frequency and fan speed on the outdoor unit This function is convenient during night Bi To start operation 1 Press POWERFUL and QUIET button and select an operation mode an Choose the desired operation mode out of the following sequence e ON OFF a e Each time the POWERFUL QUIET button is pressed a different setting option is displayed on the LCD e Selectable functions vary with each operation mode and the ON OFF state ES e and f are displayed on the LCD POWERFUL COMFORT SWING 1 218 E While in operation in AUTO COOL HEAT or HUMID HEATING mode QUIET SENSOR md l o _ WEEKLY COPY NEXT SELECT OFF v CON c While
73. will not start again heating or cooling for approximately 3 minutes 3 During the test run first check the operation of each unit individually Then also check the simultaneous operation of all indoor units Check both heating and cooling operation 4 After running the unit for approximately 20 minutes measure the temperatures at the indoor unit inlet and outlet If the measurements are above the values shown in the table below then they are normal eating e Temperature difference o o between inlet and outlet Approx 8 C Approx TSG When running in one room 5 During cooling operation frost may form on the gas stop valve or other parts This is normal 6 Operate the indoor units in accordance with the included operation manual Check that they operate normally 2 Items to check Check item Consequences of trouble Are the indoor units installed securely Falling vibration noise Has an inspection been made to check for gas leakage No cooling no heating Has complete thermal insulation been done gas pipes liquid pipes indoor portions of the drain hose extension Water leakage Is the drainage secure Water leakage Are the ground wire connections secure Danger in the event of a ground fault Are the electric wires connected correctly No cooling no heating Are the inlets outlets of the indoor and outdoor units free of any obstructions Are the stop valves open No cooling no heating Do the marks match room A
74. 08_A Reassembling precautions 1 Use non oxidizing brazing method If nitrogen gas is not available braze the parts speedily 2 Avoid deterioration of the gaskets due to carbonization of oil inside the four way valve or thermal influence For this purpose wrap the four way valve with wet cloth Splash water over the cloth against becoming too hot keep it below 120 C In pulling the pipes be careful not to over tighten them with pliers The pipes may get deformed In case of the difficulty with a gas brazing machine 1 Disconnect the brazed part where is easy to disconnect and restore Cut pipes on the main unit by a miniature copper tube cutter in order to make it easy to disconnect d Note Do not use a metal saw for cutting pipes by all means because the sawdust come into the circuit The brazed parts are heated after being disconnected To avoid a burn make sure that the compressor is cooled down before removing Removal Procedure SiBE12 908_A Others Part 8 Others e PUMP DOWN Opera ON dedo 255 Forced Cooling Operation Mode occcccocnccccnnccoccnccocnnonacononanononannnnnos 256 ege eiue RE UU I 257 3 1 Trial Operation and Testmg 257 3 2 Trial operation from Remote Controller 257 e WIPO eder m UU m TU TT 258 4 1 When 2 Units are Installed in 1 Room eese 258 42 Jumper elige EE 258 Application of Silicon Grease to a Power Transistor and MB 0 ao
75. 10 0m f 10 1m Function and Control SiBE12 908_A Main Functions 1 8 FRESH AIR SUPPLY VENTILATION Operation FAN HUM TEMPC FRESH AIR SUPPLY o7 e VENTILATION Za R9425 Refer to the operation manual for details Features The air supply ventilation system using only fresh air Any contaminated outdoor air is purified in two stages of indoor unit and outdoor unit Fresh air from which pollen and dust were removed is supplied into the room 2 Pollen and dust are 1 Unpleasant odors Indoor removed Unit Jutdoor are decomposed Air Supply Filter Fresh Air Indoor Unit Outdoor Unit is Odor gt Pollen BDust R9415 1 Purifying air in the outdoor unit Thermal catalyst containing in the humidifying rotor decomposes unpleasant odor and also removes exhaust gases NOx SOx Manganese catalyst used to treat the automotive exhaust gas is adopted for the thermal catalyst 2 Purifying air in the indoor unit The air supply filter is placed at the humidifying hose outlet of the indoor unit side The air supply filter removes about 9796 pollen and dust 3 Controlling temperature The fresh air passed through the air supply filter is cooled or heated in the indoor unit and supplied into the room You can keep comfortable temperature and also replace air because the ventilation is performed while temperature is controlled Function and Control 26 Main Functions SiBE12 908_A B Ventil
76. 1M X2M TERMINAL STRIP L LIVE PCB1 PRINTED CIRCUIT BOARD Y1E Y2E ELECTRONIC EXPANSION VALVE COIL L1 COIL Q1L OVERLOAD PROTECTOR vip REVERSING SOLENOID VALVE COIL 3D062342A L1R REACTOR R1T R8T THERMISTOR Z1C Z2C Z3C FERRITE CORE BLK BLACK m BLU BLUE e E co GAS PIPE LIQUID PIPE BRN BROWN Sg EOM Eo GRN GREEN 3 o 88s 88 ROOM A ROOM B GRY GRAY OSG Ex cf RITR2TRST groer erger OP us EIR T RS t It te t o O t H RED RED indoor WHT WHITE d gt d YLW YELLOW l ma 5 T 5 MOTTO xx 1 Ona ma gt Omooc O S 5 E e EA 2 q RED ou ROOM A tee de s um 756 IPM701 2 am 5 N24 U 3 19 V 8 L 4 LL N 4 N O O X POWER D RE 1C SUPPLY IF a sis LE H X4A SE ae zz 2I Hi 2 c5 c5 d ttt II AT 5 Sch E Ss IXSA N 222223 x A cacnencnemn coco a uu S g iR WAV JU l E FIELD WIRING M1C DB1 DIODE BRIDGE M1 M2 MOTOR S1C LIMIT SWITCH S20 S21 S22 S23 E1H HEATER M1C COMPRESSOR MOTOR SiT THERMOSTAT S40 S45 S70 S72 FU1 FU2 FU3 FUSE M1F M2F M3F FAN MOTOR SA1 SURGE ARRESTER S80 S90 S91 S92 HH1
77. 2 908_A Troubleshooting Check No 02 Refer to P 169 Service Diagnosis Troubleshooting MN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check the air passage YES Is there any short circuit Provide sufficient air passage NO Check the intake air filter YE E Clean the air filter Check the dust accumulation on the indoor unit heat exchanger Z Clean the heat exchanger Check No 02 Indoor unit heat exchanger thermistor check Does it conform to the thermistor characteristic chart YES Replace the indoor unit PCB Replace the thermistor replace the indoor unit PCB R9464 122 Troubleshooting SiBE12 908_A 2 9 Fan Motor DC Motor or Related Abnormality Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes 123 v em a ud L The rotation speed detected by the Hall IC during fan motor operation is used to determine abnormal fan motor operation When the detected rotation speed does not reach the demanded rotation speed of the target tap and is less than 50 of the maximum fan motor rotation speed Operation halt due to short circuit inside the fan motor winding Operation halt due to breaking of wire inside the fan motor Operation halt due to breaking of the fan motor lead wires Operation halt due to faulty capacitor
78. 2 Air conditioner does not run cua coepi ene ee emen ener nn iin Pesca n RE RES 109 2 3 Air conditioner runs but does not cool heat 112 2 4 When operation starts safety breaker work 114 2 5 Air conditioner makes big noise and vibration 116 2 6 Airis not humidified enough coooccccoccnccccnconcccnnnnncnncncnnnnnonaconnncnonannnnns 117 2 7 Indoor Unit PCB Abrnormalilly i iE rr be ea de 120 2 8 Freeze up Protection Control or Heating Peak cut Control 121 2 9 Fan Motor DC Motor or Related Abnormality 123 2 10 Thermistor or Related Abnormality Indoor Unit 125 2 11 Humidity Sensor Abnormality oooccccconcncconcnncconnncconccnnonacncnnacononos 126 2 12 Signal Transmission Error Indoor Unit Outdoor Unit 127 2 13 Incompatible Power Supply between Indoor Unit and Outdoor Unit 129 2 14 Incomplete Setting for Hose Length 130 2 15 Freeze up Protection in Other Rooms Unspecified Voltage between Indoor and Outdoor Une 131 2 16 Outdoor Unit PCB Abnormaltv ea aE 132 2 17 OL Activation Compressor Overload ccccooocccccoccnoconcnnccocnnnononononos 133 2 19 COMPICSSOM LOCK sse le UU 134 2 19 DG Fan LOCK ii r a NETE 135 2 20 Input Overcurrent Deiechon 136 2 21 Discharge Pipe Temperature Control 138 2 22 High Pressure C
79. A E o A T T 259 254 Pump Down Operation 1 Pump Down Operation Outline Detail 255 SiBE12 908_A In order to protect the environment be sure to conduct pump down operation when relocating or disposing the unit 1 Remove the valve caps from the liquid stop valve and the gas stop valve at the pipes for rooms A and B 2 Carry out forced cooling operation 3 After 5 to 10 minutes close the liquid stop valve at the pipes for rooms A and B with a hexagonal wrench 4 After 2 to 3 minutes close the gas stop valve and stop the forced cooling operation as quickly as possible after the gas stop valves at the pipes for rooms A and B have been shut off Hexagonal N wrench Close Liquid stop valve Gas stop valve Valve cap Service port Refer to page 256 for forced cooling operation R13628 Others SiBE12 908_A Forced Cooling Operation Mode 2 Forced Cooling Operation Mode Outline Forced operation mode includes only forced cooling Detail Forced Cooling Conditions The forced cooling operation is allowed when both the following conditions are met 1 The outdoor unit is not abnormal and not in the 3 minute standby mode 2 The outdoor unit is not operating Start Press the forced cooling operation ON OFF button SW1 or S1W on the indoor unit for 5 seconds Operating room All rooms Command frequency 40 class 70 Hz 50 class 47 Hz End The forced cooling operation ends when any of the f
80. A is finished and the unit in a standby state in Room B will go into HUMID HEAT operation When the humidity of Room A drops the unit in Room A will be switched HUMID HEAT operation and the unit in Room B will be switched HEAT operation automatically Because the unit in Room A is first selected priority The result is shown in the illustration on the left ZEE The indoor units in the rooms are in HUMID HEAT operation and FRESH AIR SUPPLY VENTILATION respectively Initial state of operation MULTI MONITOR MAI NJ UD oun We The unit in Room B in HEAT operation will be added ventilation while the unit in Room A is in HUMID HEAT operation The result is shown in the illustration on the right 87 First selected priority gl YELLOW e The unit in first selected priority operation in Room A will take precedence The unit in Room B keeps HEAT operation and will go into a standby state for ventilation Yellow In case you will start ventilation the unit in Room B the HUMID HEAT operation of Room A have to be stopped The result is shown in the illustration on the right MULTI MONITOR The unit in Room B is in HEAT operation besides ventilation Installation Operation Manual SiBE12 908_A Operation Manual 3 5 FRESH AIR SUPPLY VENTILATION FRESH AIR SUPPLY VENTILATION This function takes in outdoor air to refresh indoor air B To start FRESH AIR SUPPLY VENTILATION 1 Press HUMIDIF
81. Air Supply Ventilation 0 00anoannoannnannnnnnnannnnnnnnnnonnnnnnnrnnernneennnne 26 159 2 ABHEATNTEELIGENT BYE ainia 28 1 10 Inverter POWERFUL Operation c cocccccccncccccncccnnccconcconcnonannnonncnnnnnnnnors 30 ak Wee Te ele lia 31 t2 NIGHT SET MOGE sana 32 T9 Other FUNCI N Ss 33 1 14 Table Tor Special Modesto al Lolo 35 Zs FUNCION or Lu Ee E la 37 21 Heat PUMP Model E D oO 37 3 Control Specification cccooccccccnnccconnccconnnconnncnnnnnononnnonannnonnnnnnannnnonens 39 Sol MMOGEIICKAICIY ato arco E aio TU E 39 3 2 Automatic switching for HUMID HEAT operation room 40 3 3 Frequency COMMON esac vais ias 41 3 4 Controls at Mode Changing Gtart up 43 3 5 Discharge Pipe Temperature Control 44 3 6 Input Gurent COMMO lai cess eto be t eR Rete m ehe Chine edi Cuna bemus 45 3 7 Freeze up Protection Control 45 3 8 Heating Peak cut Control 46 39 IAS ne oo Eoo 46 3 10 Liquid Compression Protection Function 2 sseeussess 47 Slit IDEIFOST CONTO t EE 47 3 12 Electronic Expansion Valve Control 48 Swan eT 52 Table of Contents li SiBE12 908_A 3 14 Additional Functon 53 Part 5 Installation Operation Manual eee eere eee OF 5 MSTA ATOM VIIA KS 55 11 o ele leie WINNS ar das 55 UNE OU ere SIR I T TTE 67 2 EEGEN 79 3 Operation E a a edt ee esae te ius 80 Sl Names 0t Pal Surcos EE SS 80 3 2 AUTO DRY
82. CB and measure R3460 Service Diagnosis SiBE12 908_A Check 3 3 Installation Condition Check Check No 03 Installation condition check Check the allowable dimensions of the air suction and discharge area Abnormal Sg Change the position of the air discharge grille or the installation location Normal discharged air from other outdoor unit cause an increase of the suction air temperature YES Change the position of the air discharge grille or the installation location Is the heat exchanger very dirty YES Clean the heat exchanger Is the airflow blocked by obstacles or winds blowing in the opposite direction Change the installation location or direction Check the outside air temperature temperature of air taken in by the outdoor unit The outside air temperature shall be 46 C or lower R9459 3 4 Outdoor Fan System Check DC Motor Check No 05 Check No 23 Refer to P 177 Check the fan motor Does the outdoor fan lead wire connector for Rectify rotate secure connection YES YES R9460 Service Diagnosis 170 Check SiBE12 908_A 3 5 Power Supply Waveform Check Check No 08 Check the voltage waveform between power supply terminals on the terminal board for disturbance using oscillo tester B Check to see if the power supply waveform is a sine wave Fig 1 B Check to see if there is waveform disturbance near the zero
83. Control The compressor is frequency controlled during normal operation The target frequency is set by Parameters the following 2 parameters coming from the operating indoor unit B The load condition of the operating indoor unit B The difference between the room temperature and the set temperature Additional The target frequency is adapted by additional parameters in the following cases Control B Frequency restrictions Parameters B Initial settings B Forced cooling operation Inverter Principle To regulate the capacity a frequency control is needed The inverter makes it possible to vary the rotation speed of the compressor The following table explains the conversion principle The supplied AC power source is converted into the DC power source for the present The DC power source is reconverted into the three phase AC power source with variable frequency B When the frequency increases the rotation speed of the compressor increases resulting in an increased refrigerant circulation This leads to a higher amount of the heat exchange per unit B When the frequency decreases the rotation speed of the compressor decreases resulting in a decreased refrigerant circulation This leads to a lower amount of the heat exchange per unit Drawing of The following drawing shows a schematic view of the inverter principle Inverter Refrigerant circulation rate high C high speed Amount of heat exchanged air large Amount
84. Diagnosis SiBE12 908_A Troubleshooting Service Diagnosis AN Caution Check the relay wire between the or parts damage may be occurred indoor unit and the outdoor unit for color and number YES For the unit with standby power saving function perform setting of fan operation to release the standby power function Is there any improper wiring NO Is the insulation between relay wire and the insulation to the earth properly Poor insulation Properly Does the distance YES of relay wire exceed 0m NO Check outdoor unit LED A Does it flashing It glows or not Flashing Disconnect No 3 Measure the voltage between 2 and 3 Apply negative terminal to No 2 in DC range Is the measured value 30 to 50 V NO below 30 V or above 50 V Troubleshooting Be sure to turn off power switch before connect or disconnect connector Correct relay wire between indoor and outdoor unit Voltage 7 sec 15 sec Stop j j Poweron Checkduring Fault this period determined Replace relay wire between indoor and outdoor unit Distance is to be within the specified range 30 m or less Replace the outdoor unit PCB Replace the indoor control PCB A1P Replace the indoor control PCB R9435 128 Troubleshooting SiBE12 908_A 2 13 Incompatible Power Supply between Indoor Unit and Outdoor Unit IC i
85. DirectiOn oocccoocnccoocnccconononcnnonannnnanncnanononon 84 3 4 HUMID HEAT Operation meccsen r E aN 86 5 PRESEH AIR SUPPLY VENTILATION costas 88 3 6 COMFORT AIRFLOW and INTELLIGENT EYE Operation 89 3 7 POWERFUL and OUTDOOR UNIT QUIET Operation 91 3 0 ECONO Operar 92 39 TIMER Opera Ma as lo 93 3 10 WEEKLY TIMER Operatori 2nd ee Ee 95 3 11 Note for Multi System n nnnnennnnannenennnnennnnnnrenrnnrernrensrrrrsnrrrenresenrreener 100 Installation Operation Manual 54 Installation Manual SiBE12 908_A 1 Installation Manual 1 1 Indoor Units Indoor Unit Installation Drawings B How to attach the indoor unit Hook the claws of the bottom frame to the mounting plate If the claws are difficult to hook A Mounting plate remove the front grille A Mounting B How to remove the indoor unit M OMR DT Push up the marked area at the a lower part of the front grille to Bottom frame release the claws If it is difficult to Front grille Mark rear side release remove the front grille gt o 7 The mounting plate If it is difficult to lay the humidifying A IA gt should be installed on a hose cut it lay it and connect it using gt D wall which can support the the joint included with the outdoor unit weight of the indoor unit Screws Do not install the trap to Field supply M4 x 25L the humidifying hose as 30mm or more mu
86. E IINA LLL LALA NL TTT FHHEH C CITT TTT CT TT LITT Titanium apatite photocatalytic air purifying filter Y ZL LLAL YA Foo Ll SF IAN JU AY AY LLL HTA TT LILII II CLLLIL II HH CLI L Projections R7905 SiBE12 908_A B The titanium apatite photocatalytic air purifying filter is not marked for difference between the right and left sides Removal Procedure SiBE12 908_A Indoor Unit Step Fee n Pos O 4 Removing the air supply B Insert the air supply filter filter along with the guide for easy Lift the air supply filter T E installation up to take out AYNA Ay Install the air supply filter correctly so that the front side mark comes front Fc LENDER Humidifying operation without installing the air supply filter forms condensation inside the panel and it causes water Undo the upper 2 hooks leakage of the air supply filter and open the frame There are 4 hooks for the air Front side mark supply filter y lj L 4 R10281 R10282 Removal Procedure 184 Indoor Unit SiBE12 908_A 1 2 Removal of Front Panel Procedure MN Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Pons 1 Removing the front panel Hold the right and left projections of the front Front panel panel and open the panel over the position where it stops Slide the l
87. EES Change power supply installation YES Check detailed operating conditions diagnosis by gas pressure operation current R9431 When an air conditioner does not cool or heat the room refrigerant leak is considered to be one of the reasons Make sure that there is no refrigerant leakage or breaks due to over tightened flare part Though the refrigerant used in an air conditioner is itself harmless but it can generate toxic gases when it leaks into room and contacts flames such as fan and other heaters stoves and ranges In case of leakage ventilate the room immediately Service Diagnosis SiBE12 908_A Troubleshooting 2 4 When operation starts safety breaker works Method of Malfunction Detection Malfunction Decision Conditions Insufficient capacity of safety breaker Earth leakage breaker is too sensitive Not exclusive circuit The supply voltage is not within rated voltage 10 The size of connecting wire is thin indoor power supply unit Air is mixed over filling Damaged outdoor unit PCB short circuit Supposed Causes Service Diagnosis 114 Troubleshooting Troubleshooting MN Caution Power supply or parts damage may be occurred Check No 29 Refer to P 179 Is the capacity of safety breaker as specified Does the earth leakage breaker work NO NO Is it an exclusive circuit YES s the size of wire for NO the exclusive ci
88. En DE CONTHi MONTE WED OFF 39 00 SATSUN BONGO ON OFF O lt ARC452A5 gt Open the front cover SiBE12 908_A B Remote Controller 1 Signal transmitter t sends signals to the indoor unit 2 Display LCD e t displays the current settings In this illustration each section is shown with its displays ON for the purpose of explanation 3 FAN setting button t selects the airflow rate setting 4 HUMIDIFY VENTILATE button HUMID HEAT operation and FRESH AIR SUPPLY VENTILATION page 12 5 ON OFF button Press this button once to start operation Press once again to stop it 6 TEMPERATURE adjustment buttons e It changes the temperature setting 7 MODE selector button t selects the operation mode AUTO DRY COOL HEAT FAN page 8 8 POWERFUL QUIET button e POWERFUL and OUTDOOR UNIT QUIET operation page 17 9 ECONO button ECONO operation page 18 10 SWING button Flaps horizontal blades page 10 11 SWING button Louvers vertical blades page 10 12 COMFORT SENSOR button e COMFORT AIRFLOW and INTELLIGENT EYE operation page 15 13 WEEKLY WEEKLY button PROGRAM button COPY button BACK button NEXT button e WEEKLY TIMER operation page 21 14 SELECT button e It changes the ON OFF TIMER and WEEKLY TIMER settings page 19 20 22 15 0FF TIMER button page 19 16 ON TIMER button page 20 17
89. GENT EYE Operation INTELLIGENT EYE is useful for Energy Saving B Energy saving operation Change the temperature 2 C in heating 2 C in cooling 2 C in dry mode from set temperature Decrease the airflow rate slightly in FAN mode only If no presence detected in the room during 20 minutes NOTE Bi Notes on INTELLIGENT EYE operation Operation Manual e The INTELLIGENT EYE sensor according to the following situations Vertical angle 90 Side View Horizontal angle 110 Top View The air conditioner will go into energy saving mode after 20 minutes People are detected in both areas No people are detected in the areas Use the INTELLIGENT EYE operation in The wind direction may differ from the combination with the COMFORT AIRFLOW illustrated direction depending on the actions operation and movements of the people in the areas While the air conditioner is in INTELLIGENT EYE operation the louvers will adjust the airflow direction If there are people in the sensing areas of the INTELLIGENT EYE the louvers are controlled and airflow direction will be leftward or rightward so that the airflow will not be directed to the people If no people are detected in either area 1 or 2 in 20 minutes the air conditioner will go into energy saving mode with the set temperature shifted by 2 C The INTELLIGENT EYE sensor may not detect the people depending on the clothes they are wearing if there are no
90. IET SENSOR 10 WEEKLY MULTI MONITOR BACK NEXT 9 pe SELECT OFF ON ID 8 NO CANCEL Lo O g E Y A reservation made once can be easily copied and the same settings used for another day of the week Refer to CT page 24 NOTE B Notes on WEEKLY TIMER operation Do not forget to set the time on the remote controller first The day of the week ON OFF TIMER mode time and set temperature only for ON TIMER mode can be set with WEEKLY TIMER Other settings for ON TIMER are based on the settings just before the operation e Both WEEKLY TIMER and ON OFF TIMER operation cannot be used at the same time The ON OFF TIMER operation has priority if it is set while WEEKLY TIMER is still active WEEKLY TIMER is activated after the reserved ON OFF TIMER operation is completed Only the time and set temperature set with the weekly timer are sent with the PROGRAM button Set the weekly timer only after setting the operation mode the fan strength and the fan direction ahead of time e Shutting the breaker off power failure and other similar events will render operation of the indoor unit s internal clock inaccurate Reset the clock e The BACK button can be used only for the ON OFF TIMER mode and time settings It cannot be used to go back to the reservation number 97 Installation Operation Manual SiBE12 908_A WEEKLY TIMER Operation WDAIKIN FAN ON OFF v
91. Installation Operation Manual SiBE12 908_A Installation Manual Refrigerant Piping Work 1 Installing outdoor unit 1 When installing the outdoor unit refer to Outdoor Unit Installation Drawings on page 3 2 If drain work is necessary follow the procedures below 2 Drain work 15 Drain water hole 1 Use C drain plug for drainage ER s 2 If the drain port is covered by a mounting base or floor surface place Bottom frame R additional foot bases of at least 30mm in height under the outdoor unit s feet 3 In cold areas do not use a drain hose with the outdoor unit Otherwise drain water may freeze impairing heating performance C Drain plug Hose available commercially inner dia 16mm 3 Refrigerant piping CAUTION 1 Use the flare nut fixed to the main unit To prevent cracking of the flare nut by aged deterioration 2 To prevent gas leakage apply refrigeration oil only to the inner surface of the flare Use refrigeration oil for R410A 3 Use torque wrenches when tightening the flare nuts to prevent damage to the flare nuts and gas leakage Align the centres of both flares and tighten the flare nuts 3 or 4 turns by hand Then tighten them fully with the torque wrenches flare Apply oil Tighten Apply refrigeration oil to Torque wrench Donotapply reirigeration Se Eeer of the E oil to the outer surface Flare nut Spanner Piping union Flare nut Do n
92. Installation Manual SiBE12 908_A Outdoor Unit Installation Guideline Where a wall or other obstacle is in the path of outdoor unit s intake or exhaust airflow follow the installation guidelines below For any of the below installation patterns the wall height on the exhaust side should be 1200mm or less Wall facing one side More than 50 j C 1200 E or less A 7 lil ZT More than 100 Y NEN LS NER Side view More than 50 Walls facing two sides Z More than 1507 T More than 100 f More than 50 Top view Walls facing three sides Moe than 150 More than 300 7 7 Top view unit mm Selecting a Location for Installation of the Indoor Units e The maximum allowable length of refrigerant piping and the maximum allowable height difference between the outdoor and indoor units are listed below The shorter the refrigerant piping the better the performance Connect so that the piping is as short as possible Shortest allowable length per room is 3m Total length of piping between all units ROOM A B 15m max 30m max Piping to each indoor unit Level difference 15m max difference 7 5m max If the outdoor unit is positioned higher than the indoor units 69 Level difference 15m max Level difference 7 5m max Indoor Unit If the outdoor unit is positioned otherwise If lower thar one or more indoor units
93. L 7 Stop valve cover _ ag unit mm Also insulate the connection on the outdoor unit If there is the danger of the unit If the location does not have good drainage falling or overturning fix the unit place the unit on a level mounting base ora with foundation bolts or with plastic pedestal Install the outdoor unit ina wire or other means level position Failure to do so may result in water leakage or accumulation Clamping material Insulation tube Tape Stop valve cover Use tape or insulating material on all connections to prevent air from getting in between the copper piping and the insulation tube Be sure to do this if the outdoor unit is installed above 67 Installation Operation Manual SiBE12 908_A Installation Manual Installation Install the unit horizontally The unit may be installed directly on a concrete verandah or a solid place if drainage is good e If the vibration may possibly be transmitted to the building use a vibration proof rubber field supply 1 Connections connection port Install the indoor unit according to the table below which shows the relationship between the class of indoor unit and the corresponding port The total indoor unit class that can be connected to this unit 2MXU40G Up to 6 0kW 2MXU50G Up to 8 5kW 2MXU40G 2MXU50G 25 35 25 35 42 B 25 35 25 85 42 50 Use a reducer to conn
94. Lo as shown A Position the end T of a tape measure t m T S at v 4D En ue Cosi AA 817 Q y d i S Liquid pipe end j Through the wall 449 PES 1755 _605 hole 670mm een S 8 278 5 50 Keep here the piece cut out Drain hose position L 800 from the unit for piping unit mm The removed pipe port cover can be kept in the mounting plate pocket Ki La Removed pipe lt port cover A Mounting plate 2 Boring a wall hole and installing wall embedded pipe For walls containing metal frame or metal board be sure to use a wall embedded pipe and wall cover in the feed through hole to prevent possible heat electrical shock or fire Wall embedded m Be sure to caulk the gaps around the pipes with caulking material to prevent VG MS PD Y E Y nside gt Outside water leakage 1 Bore a feed through hole of 70mm in the wall so it has a down slope toward Wall hole cover the outside field supply 2 Insert a wall pipe into the hole 3 Insert a wall cover into wall pipe 4 After completing refrigerant piping wiring and drain piping caulk pipe hole gap with putty Wall embedded pipe field supply Installation Operation Manual 60 Installation Manual SiBE12 908_A Indoor Unit Installation 3 Inter unit wiring 1 Open the front panel then remove the service lid 2 Pass the inter unit wiring from the outdoor unit through the feed through wall hole and then through the back of the
95. MENT AND MANUFACTURE OF AIR CONDITIONERS AND THE COMPONENTS INCLUDING COMPRESSORS USED FOR THEM ORGANIZA jo Ki 14001 AND CERTI xz 25 D o Moar A VOR EC99J2044 ISO JAC S Juan All of the Daikin Group s business facilities and subsidiaries in Japan are certified under the 150 14001 international standard for environment management DAIKIN INDUSTRIES LTD Head Office Umeda Center Bldg 2 4 12 Nakazaki Nishi Kita ku Osaka 530 8323 Japan Tokyo Office JR Shinagawa East Bldg 2 18 1 Konan Minato ku Tokyo 108 0075 Japan http www daikin com global_ac CAII rights reserved SiBE12 908 A Printed in Japan 01 2011 B AK
96. Man UN CUONS vai dde ii 14 1 1 Erequenci ue el EE 14 12 Thermostat CONTO EE 16 1 3 Automatic OUperaton 17 TA Program DN RUN CIO Ns iio 18 tS Allow Direction E te EE 19 1 6 Fan Speed Control for Indoor Ulnte 20 ER AUMID AEAT EIERE ME vate tbe E eei 21 1 8 Fresh Air Supply Ventilation 00 00nnoannoannnnnnnennnannnnnnnnnnnnnnnnnnnnnennnnennnne 26 1 9 2 AREAINTELLIGENTE YE usto erbe tuna d du pale bent PD S pats 28 1 10 Inverter POWERFUL Operation cococccccccncccccnccccncconnccnncnononnnnoncncnanononons 30 TiL ECONO MOGE a o 31 Tod 2 WE le SE TU MOGE EG 32 1413 Other FUNCIONS incas al 33 1 14 Table tor Special Modes cios ii 35 2 FUNcUIon Ol aiino e S STE 37 Sech Aea Pump Models iii loci 37 3 Gontrol ee ee MEN 39 eech Mode Alertar DEI la 39 3 2 Automatic switching for HUMID HEAT operation room 40 33 Frequency COMM Ollie T 41 3 4 Controls at Mode Changing Gtart up 43 3 5 Discharge Pipe Temperature Control 44 9 6 Input Gurrent Controla nats quer dnt eh quum ive adc ue e ada dto aped 45 3 7 Freeze up Protection Control 45 3 8 Heating Peak cut Control 46 39 A eee NS eee ee nee ee 46 3 10 Liquid Compression Protection Function 2 47 Sal DENOS Control Ee 47 3 12 Electronic Expansion Valve Control 48 3 139 Malu culos gees 52 RE Ada tonal FUNCION did LS 53 Function and Control SiBE12 908_A Main Functions 1 Main Functions 1 1 Frequency Principle Main
97. OL DRY and FAN mode may be used at the same time AUTO mode automatically selects COOL mode or HEAT mode based on the room temperature Therefore AUTO mode is available when selecting the same operation mode as that of the room with the first unit to be turned on CAUTION Normally the operation mode in the room where the unit is first run is given priority but the following situations are exceptions so please keep this in mind If the operation mode of the first room is FAN Mode then using HEAT Mode in any room after this will give priority to HEAT In this situation the air conditioner running in FAN Mode will go on standby and the operation lamp will flash E HUMID HEAT operation FRESH AIR SUPPLY VENTILATION When the indoor units in both 2 rooms are set to HUMID HEAT operation FRESH AIR SUPPLY VENTILATION the indoor unit in either 1 of the room operate HUMID HEAT operation FRESH AIR SUPPLY VENTILATION The indoor units in both 2 rooms do not simultaneously go into HUMID HEAT operation FRESH AIR SUPPLY VENTILATION Priority is given to the indoor unit in either one of the rooms with the mode selected earlier The indoor unit in the other room with mode selected later will change its state according to the operation mode with humidifying operation ventilation settings Refer to the following examples 1 through 4 Neither one of the indoor units cannot go into humidifying operation ventilation while the indoor units are in a standby sta
98. Option NEO Fan Only DIII NET Compatible Adaptor Option MIES Lifestyle New POWERFUL Operation a Remote Wes Convenience Non Inverter Controller inverter POWERFUL Opan Wied ENE Priority Room Setting J OP Cooling HeatingModeLock ITT HOME LEAVE Operation III ECONO Mode ME A A ee A E Loc A BE ER OOOO Note O Holding Functions No Functions 3 List of Functions SiBE12 908_A Part 2 Specifications UN DAM O Ee 5 Wel ANACO at tte E 5 12 Qutdoor AMA 6 Specifications 4 Specifications SiBE12 908_A 1 Specifications 1 1 Indoor Units 50Hz 220 230 240V Cong Heng Cooling Heaimg V ri Type Fan Motor Output Speed Air Direction Control Running Current Rated A 0 09 0 08 0 08 0 10 0 10 0 09 0 12 0 12 0 11 0 13 0 13 0 12 Power Consumption Rated 21 Power Facio Temperature Contra Dimensions FWD Packaged Dimensions DON Weight i 8 EE AE Gross Weight mm exem Piping Connection mm 180 CTXUSOGAVIB Model cooing Heng Cong Heng TEN Piin 77 273 cim Fan See H M L SL 42 38 33 30 42 38 33 30 43 39 34 31 44 39 34 31 8 ee 8589 6 Piping Connection 30063379 30063360 Conversion Formulae Note 1 x In humidifying operation the operation sound increases by about 2dB in the indoor unit 2 The humidifying capacity is 450ml h under the following condition kcal h kWx860 Outdoor air temperature 7 CDB 6CWB Btu h KWx3412 ee cfm m8 mi
99. PCB YES Check to see that the unit is grounded NO Grounded Carry out grounding work YES Is harness in good YES Zero cross signal is fault order Replace the outdoor unit PCB NO Replace harness R9437 132 Troubleshooting SiBE12 908_A 2 17 OL Activation Compressor Overload Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Check No 02 Refer to P 169 Check No 12 Refer to P 172 Check No 17 Refer to P 176 Check No 31 Refer to P 180 133 A compressor overload is detected through compressor OL m fthe compressor OL is activated twice the system is shut down B The error counter resets itself if this or any other error does not occur during the following 60 minute compressor running time total time he operating temperature condition is not specified Refrigerant shortage Four way valve malfunctioning Outdoor unit PCB defective Water mixed in the local piping Electronic expansion valve defective Stop valve defective Be sure to turn off power switch before connect or disconnect connector MN Caution or parts damage may be occurred Discharge pipe thermistor disconnected Check No 02 Check the thermistors Malfunctioning Functioning Check No 17 Check the electronic expansion valve Malfunctioning Functioning Check No 31 Chec
100. PMH996A15S 15m set only if the overall length of the humidifying D 2m hose to the outdoor unit respectively and join the 2 hoses exceeds 10m 1 Be sure to connect one of the D 2m hoses provided with a cuff each to the indoor unit and the other one to the outdoor unit Ms dont Connect the H 7 5m hose and J 3 5m hose midway to adjust the overall E i ndoor unit utdoor uni him u D DES Nas C 8m LN presse Indoor unt G Reducing joint hoses with the A joint Cut the C 8m hose to adjust the overall length of the H 7 5m A humidifying hoses NEM Connect the 2 D 2m hoses provided with a cuff each and the H 7 5m hose all together through the G reducing joint if the overall length of the humidifying hoses is G Reducing joint 11 5m or less e Cut the H 7 5m hose to adjust the D 2m overall length of the humidifying hoses pj 11 75 Installation Operation Manual SiBE12 908_A Installation Manual 2 Connecting to outdoor unit There are 2 ways to connect humidifying hoses to the outdoor unit Connecting through the path under the humidifying hoses cover lt Back side gt Connect the D humidifying hose 2m to the humidifying duct on the back of the outdoor unit In that case make sure that the centreline on the cuff of the hose coincides with mark above the connecting port The F humidifying hose cover cannot be mounted unless V mark coincides with the centreline
101. RESH AIR SUPPLY VENTILATION The indoor units in both 2 rooms do not simultaneously go into HUMID HEAT operation FRESH AIR SUPPLY VENTILATION Priority is given to the indoor unit in either one of the rooms already in operation When the humidity of the room to which priority is given reaches a target level the humidification of the room will stop and the humidification of the other room will start automatically page 26 B Refer to the following application examples ES The indoor units in both 2 rooms are in HUMID HEAT operation Initial state of operation The unit in Room B in HEAT operation will be changed into HUMID HEAT operation while the unit in Room A is in HUMID HEAT operation The result is shown in the illustration on the right While the unit in Room A is in CONT HUMID HEAT operation the unit in Room B will not go into HUMID HEAT operation automatically as right example The multi monitor lamp is yellow in a standby state First selected priority The unit in first selected priority operation in Room A will take precedence and the unit in Room B will go into a standby state Yellow When the humidity of Room A satisfies the preset condition HUMID HEAT operation in Room A will be switched to the unit in Room B automatically The result is shown in the illustration on the right SiBE12 908 A Automatic switchover between 2 rooms MULTI MONITOR MAIN A CL The humidification of Room
102. TIMER CANCEL button t cancels the timer setting page 19 20 t cannot be used for the WEEKLY TIMER operation 18 CLOCK button Installation Operation Manual SiBE12 908_A Operation Manual 3 2 AUTO DRY COOL HEAT FAN Operation AUTO DRY COOL HEAT FAN Operation T 5 a OON OFF 1 mE tom LG POWERFUL COMFORT SWING ica 2 2 25 QUIET SENSOR WEEKLY COPY NEXT SELECT v ON e WDAIKIN FAN HUM yA Ke Installation Operation Manual The air conditioner operates with the operation mode of your choice From the next time on the air conditioner will operate with the same operation mode Bi To start operation 1 Press MODE selector button and select a operation mode Each pressing of the button advances the mode setting in sequence al e AUTO DRY COOL HEAT FAN 2 Press ON OFF button e KB is displayed on the LCD The OPERATION lamp lights up uon Operation mode Multi monitor lamp ANTT f AUTO Blue Red MT c coo HUMID HEAT Orange Yellow page 12 Lit white for 2 seconds After that return to the color of selected operation mode or change to yellow in a standby state page 14 FRESH AIR SUPPLY VENTILATION B To stop operation 3 Press ON OFF button again e ON disappear from the LCD e Then OPERATION lamp goes off B To change the tem
103. The operation noise is slightly louder e When the outdoor temperature is higher than room temperature the airflow rate of FRESH AIR SUPPLY VENTILATION will be low Installation Operation Manual 88 Operation Manual SiBE12 908_A 3 6 COMFORT AIRFLOW and INTELLIGENT EYE Operation COMFORT AIRFLOW and INTELLIGENT EYE Operation The INTELLIGENT EYE incorporates infrared sensors to detect the presence of people in the conditioned room When these sensors detect people the louvers will adjust the airflow direction to an area where people are not present When there are no people in the sensing areas the air conditioner will go into energy saving mode WDAIKIN Bi To start operation 1 Press COMFORT SENSOR button and select an operation mode Choose the desired operation mode out of the following sequence e Each time the COMFORT SENSOP button is pressed a different setting option is displayed on the LCD FAN QON OFF ES E a POWERFUL COMFORT SWING CAE SENSOR QUIET WEEKLY COPY A NEXT When the flaps horizontal blades are swinging the operating as above will stop the movement SELECT of them v ON CANCEL Ce E To cancel operation 2 Press COMFORT SENSOR button Press the button to select Blank Display Operation mode Explanation The flaps will adjust the airflow direction upward while COMFORT AIRFLOW cooling and adjust the airflow direction downward whi
104. Thermistor Resistance Check 169 3 3 Installation Condition Check 170 3 4 Outdoor Fan System Check DC Motor 170 3 5 Power Supply Waveform Check 171 3 6 Main Circuit Electrolytic Capacitor Check 171 3 7 Refrigerant System CHECK incaico iii 172 3 8 Inverter Checker Check 173 3 9 Power Transistor Check 175 3 10 Discharge Pressure Check 175 3 11 Electronic Expansion Valve Check 176 3 12 Rotating Pulse Input on Outdoor Unit PCB Check 177 3 13 Main Cireum Short ONEK assit ess ortes ees eege 179 3 14 Four Way Valve Performance Check 180 Service Diagnosis 102 Service Check Function SiBE12 908_A 1 Service Check Function 1 1 Failure Diagnosis with Multi Colored Indicator Lamp The multi colored indicator lamp on the display of the indoor unit flashes when any of the following failure is detected 1 When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions and the unit does not work 2 When a signal transmission error occurs between the indoor and outdoor units For detailed troubleshooting refer to the following pages Troubleshooting P 107 Ss a Sea NS cpm Multi colored indicator lamp MULTI MONITOR gt en R9419 1 2 Failure Diagnosis by LED Indication The following failure diagnosis ca
105. Y VENTILATE button and select a FRESH AIR SUPPLY VENTILATION mode Mode Cyclic of humidity settings Multi monitor lamp WDAIKIN Lit white for 2 seconds e e OSTD e After that return to the CONT d gt low w eg color of selected IM EE operation mode or change to yellow in a FAN ON OFF HUM TEMPC 1 2 M Select standby state e is displayed on the LCD B To cancel FRESH AIR SUPPLY VENTILATION 2 Press HUMIDIFY VENTILATE button and select a OFF e el disappears from the LCD NOTE Bi Notes on FRESH AIR SUPPLY VENTILATION An example of FRESH AIR SUPPLY VENTILATION page 26 Initial state of operation First selected priority The unit not in operation in Room B will The unit in first selected priority After the ventilation of Room A is go into ventilation while the unit in operation in Room A will take stopped the unit in Room B will go into Room A is in COOL operation besides precedence and the unit in Room B will ventilation operation ventilation go into a standby state Yellow In case The result is shown in the illustration on you will start ventilation the unit in the right Room B the ventilation of Room A have to be stopped The result is shown in the illustration on the right Fresh air is taken from outdoor through the outdoor unit The outdoor noise and odor may be captured because the outdoor air is taken into the room
106. al level 26 C to 28 C in cooling mode 20 C to 24 C in heating mode B For protection the system disables restart operation for 3 minutes after it is turned off 3 2 Trial operation from Remote Controller 257 1 Press the MODE button and select operation mode 2 Press the ON OFF button to turn on the system 3 Press the both of TEMP buttons and the MODE button at the same time 4 Press the TEMP A or Y button and select TEST mode 5 Press the MODE button 6 Trial operation mode terminates in approx 30 minutes and switches into normal mode To quit a trial operation press ON OFF button WP DAIKIN Others SiBE12 908_A Jumper Settings 4 Jumper Settings 4 1 When 2 Units are Installed in 1 Room When 2 indoor units are installed in 1 room one of the 2 wireless remote controllers can be set for different address How to set the different address B Control PCB of the indoor unit 1 Remove the shield plate of the electrical box Refer to the removal procedure on page 194 2 Cut the address jumper JA on the control PCB B Wireless remote controller 1 Slide the front cover and take it off 2 Cut the address jumper J4 ADDRESS 1 R8250 4 2 Jumper Setting Jumper Function When connected When cut On indoor unit PCB factory set Power failure Auto restart Unit does not resume operation recovery function
107. allation Operation Manual SiBE12 908_A Operation Manual WEEKLY TIMER Operation WDAIKIN N MH ON OFF lE HUM vA MODE N ECOND eal aye SWING Ki ala WEEKLY Le COPY MET m CON e V Installation Operation Manual 1 3 5 7 2 4 6 E To use WEEKLY TIMER operation Make sure the day of the week and time are set If not set the day of the week and time Program 1 Program2 Pal Program 4 1 EE y pomme Monday 2DC gt gt 600 L E 22 d Setting Displays NA all Nl VEN iS mr KL mmt KO 4 N VM 7 ae EN Day and number settings ON OFF settings Time settings Temperature settings 1 Press PROGRAM button The day of the week and the reservation number of the current day will be displayed Programs 1 4 settings can be made per day 2 Press SELECT button to select the desired day of the week and reservation number Pressing the SELECT button changes the reservation number and the day of the week 3 Press NEXT button The day of the week and reservation number will be set di and ON blink 4 Press SELECT button to select the desired mode Pressing the SELECT button changes ON or OFF setting in sequence PN b ONTIMER OFFTIMER blank n case the reservation has already been set selecting blank deletes the reservation Got
108. ally controlled depending on the difference between the room thermistor temperature and the target temperature This is done through phase control and Hall IC control For more information about Hall IC refer to the troubleshooting for fan motor on page 123 Automatic Fan In automatic fan speed operation the step SL is not available Cooling Heng Se Mo HH R14127 R14128 Speed Control POWERFUL The airflow rate is automatically controlled within this range when the FAN setting button is set to automatic mb d Note During POWERFUL operation fan operates H tap 50 rpm Fan stops during defrost operation 3 In time of thermostat OFF the fan rotates at the following speed Cooling The fan keeps rotating at the set tap Heating The fan stops Dry The fan stops after rotating for a few minutes at LL tap N Automatic On heating mode the indoor fan speed is regulated according to the indoor heat exchanger Airflow Control temperature and the difference between the room temperature and the required set point for Heating Automatic The following drawing explains the principle of fan speed control for cooling Airflow Control MEI sc for Coolin bar 7 9 2 5 C M 2 C Difference between room 1 5 C ML and set temperature 1 C 0 5 C L Thermostat setting temperature Phase control R9656 d Note In automatic fan speed operation upper limit is at M tap in 30 minutes from the operation star
109. arm d The room is uniformly humidified 39685988398 R3326 Powerful humidifying ability The humidifying capacity is 450 ml h and equivalent to that of a normal humidifier The value is measured at 7 C DB 6 C WB of outdoor air and with 4 0 m of humidifying hose length No need for water supply nor cleaning Water supply and cleaning are unnecessary as it does not have water tank unlike humidifiers and there is no proliferations of bacteria Humidity control The target of the humidity level is 40 to 50 RH You can select from Low STD standard Hi high and CONT continuous The target humidity 76 cannot be set When the outdoor temperature and humidity are low the humidifying capacity is decreased In addition the moisture in the room may not attain sufficient humidity when the ventilation volume is high the preset temperature is high or the preset humidity is HIGH After the humid heating operation starts the relative humidity in the room lowers temporarily This phenomenon is caused by the increase of the saturation water vapor Therefore the humidity raises gradually after the temperature reaches the preset temperature In the humidifying operation the operation sound increases by about 2 dB in the indoor unit and 3 dB in the outdoor unit This system does not suppose the storage of musical instruments or the like Conditions for While heating mode humidifying operation can be available when the
110. as not to be entangled with the propeller fan Ds Lead wire Propeller fan R3249 Removal Procedure SiBE12 908_A 2 12 Removal of Thermistors AP Warning Procedure 1 2 Removal of the i i esoe pipe thermistors 3 The outdoor air Undo the clip and remove the discharge pipe thermistor Cut off the clamp to pull out the heat exchanger thermistor discharge pipe heat exchanger thermistors are united as one assembly The figure shows the arrangement of the assembly of thermistor S90 Remove the liquid gas pipe thermistors Removal Procedure Outdoor Unit Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work sip Procedure Points Removal of the assembly of thermistor B Be careful not to lose the clip for the discharge pipe thermistor Heat exchang thermistor The clamp is always reserved Be careful not to lose the clips for each thermistor R7631 Outdoor air thermistor
111. ation System The ventilation type is mainly divided into two The convenient system is supply ventilation Exhaust Ventilation Supply Ventilation T Fresh R5979 Quiet because the ventilation fan is located in Operation noise is heard because the ventilation the outdoor unit fan is located in the room Energy saving system due to low heat loss Electricity charges are high because heat loss is high The room temperature changes little because Draft enters easily to prevent comfortable no wind enters temperature from being kept 27 Function and Control SiBE12 908_A Main Functions 1 9 2 AREA INTELLIGENT EYE The following functions can be performed by a human motion sensor INTELLIGENT EYE 1 Reduces the capacity when there is no human in the room in order to save electricity energy saving operation 2 Divides the room into plural areas and detects existence of humans in each area Shifts the airflow direction to the area having no human automatically to avoid direct airflow on humans Processing 1 Detection method by INTELLIGENT EYE If the sensor detects the outputs 10 times sec sampling 20msec 4sec or More it judges humans exist High Sensor output Low Condition of 10 times or more output j r Detection signal ON from the sensor OFF If the detection signal ON continues 3 sec or more it judges humans exist Continue 3 sec Human motion
112. b 6 Room temperature and humidity sensors lt senses the air temperature and humidity around 5 the unit 7 INTELLIGENT EYE sensor page 15 8 Control panel 9 Air outlet 7 10 Flaps horizontal blades page 10 11 Louvers vertical blades The louvers are inside of the air outlet page 10 12 Air supply filter gray 13 Indoor Unit ON OFF switch page 8 Push this switch once to start operation Push once again to stop it The operation mode refers to the following table Mode Airflow rate This switch is useful when the remote controller is 17 15 missing 14 Multi monitor lamp page 8 The lamp color changes according to the MONITOR operation 14 EEN Blue Red 0 OA EE Green p A E E Blue 16 e HEAR ETT Red EAN E White 13 15 TIMER lamp yellow page 19 16 INTELLIGENT EYE lamp green page 15 17 Signal receiver t receives signals from the remote controller m receives a signal you will hear a e Operation start beep beep e Settings changed beep e Operation stop beeeeep 19 E Outdoor Unit 18 Air inlet Back and side 19 Refrigerant piping humidifying hose and inter unit cables 20 Drain hoses 21 Earth terminals e t is inside of this cover 22 Air outlet 23 Humidifying hoses 24 Humidity unit QI E NX G e C Ce Installation Operation Manual 80 Operation Manual Remote Controller 81 WDAIKIN EN O A DSTD
113. bsorption by a carpet a curtain etc R9411 Function and Control SiBE12 908_A Time chart for humidifying operation control Function and Control Main Functions Approx 1 minute after HUMID HEAT operation start up it repeats humidifying and drying alternately to protect condensation for inside the hose ON HUMID HEAT ae NEE operation OFF Approx 1min a 4 Approx 3min Humidifying fan EN and damper OFF g b a b a b a b Fn et at ee gt gt ON I I I L Hygroscopic fan OFF i 1 i i 15 sec 115 sec SS 1 1 1 1 gt ON 4 Pos Heater Dry mde oo o n OFF ON Rotor OFF R14129 T Decide time according to the outdoor temperature a Humidifying time Approx 70min and hose length set by remote controller b Drying time Approx 2 10min Decide time according to the hose length set by b Drying time Approx 2 10min remote controller B Time chart for HUMID HEAT operation on trial mode HUMID HEAT operation on trial mode works in the same sequence as HUMID HEAT operation but about 30 minutes later it automatically stops B Remark When a room is spacious such as loft style or partitioned by accordion style curtain the ventilation volume is large and may not sometimes reach the set humidity 24 Main Functions Humidification performance by outdoor temperature Performance compensation by hose length 25
114. cation operation including air supply ventilation starts Faulty damper operation due to frost Faulty damper operation due to foreign material Limit switch fault including improper connection Defective motor for damper Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Is the damper fixed due to frost Heat the damper unit and melt frost Is the damper fault OK repeated Check intake air and humidifier unit for direct sucking of moisture Is the wire connection YES of limit switch LS loosen Reconnect wires NO Replace the limit switch or replace the outdoor unit PCB R10339 142 Troubleshooting SiBE12 908_A 2 25 Position Sensor Abnormality Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes 143 In HN 0 D gt D ap Startup failure of the compressor is identified by rom information of the compressor and by electric component position detector B When the compressor does not run for 15 seconds after receiving operation start command The unit shuts down if the fault occurs 16 times Clear condition The compressor continuously runs for 11 minutes without fault Detection error due to disconnection of compressor harness Startup failure due to defective compressor Startup failure due to defective outdoor unit PCB Startup failure du
115. ced cooling Refer to the below 3 After 5 to 10 minutes close the liquid stop valves at the pipes for rooms A and B ribus using a hex wrench 4 After 2 to 3 minutes stop the FORCED COOLING operation as quickly as possible after the gas stop valves at the pipes for rooms A and B have been shut off Gas 5 Turn the power breaker off Se N CAUTION Run the air conditioner to cool both rooms A and B when performing a pump down 1 FORCED COOLING operation 1 1 Using the indoor unit ON OFF button 1 Press the ON OFF button on the indoor unit in either room A or B for 5 seconds continuously The units in both rooms will start 2 FORCED COOLING operation will end after around 15 minutes and the unit will stop automatically Press the ON OFF button on the indoor unit to FORCED COOLING operation to stop 3 Use this method to FORCED COOLING operation when the outside temperature is 10 C or lower 1 2 Using the wireless remote controller 1 Select cooling operation and press the ON OFF button The unit will start 2 Press the TEMP A W button 2 locations and the MODE button at the same time 3 Press the MODE button twice 77 will be displayed and the unit will go into test run mode 4 Test run mode will end after around 30 minutes and the unit will stop automatically Press the ON OFF button to force the test run to stop N CAUTION If the outside temperature is 10 C or lower
116. ch additional meter of piping Important information regarding the refrigerant used This product contains fluorinated greenhouse gases covered by the Kyoto Protocol Do not vent gases into the atmosphere Refrigerant type R410A GWP value 1975 0 GWP global warming potential Please fill in with indelible ink B 1 the factory refrigerant charge of the product E 2 the additional refrigerant amount charged in the field and B 1 2 the total refrigerant charge on the refrigerant charge label supplied with the product The filled out label must be adhered in the proximity of the product charging port e g onto the inside of the stop valve cover Contains fluorinated greenhouse gases covered by 1 factory refrigerant charge of the product see unit name plate MA the Kyoto Protocol m4 R410A 0 e 2 additional refrigerant amount charged in the field 3 total refrigerant charge 2 k l 4 Contains fluorinated greenhouse gases covered by the Kyoto Protocol 1 5 outdoor unit y a ka 6 refrigerant cylinder and manifold for charging 6 5 NOTE National implementation of EU regulation on certain fluorinated greenhouse gases may require to provide the appropriate official national language on the unit Therefor an additional multilingual fluorinated greenhouse gases label is supplied with the unit Sticking instructions are illustrated on the backside of that label N CAUTION 1
117. ch as possible from ceiling 4 Install the hose with a downward slope Humidifying iiis di hose Front panel Enc c SY Cut thermal insulation pipe to an appropriate s length and wrap it with 50mm or more A ES e tape making sure that from walls Zp X Es ee le N no gap is left in the on both sides insulation pipe s cut line I INTELLIGENT A P EYE sensor mA Wrap the insulation Air filters M4 x 16L S DE pipe with the finishing SS MA x 16L tape from bottom to top _4 Air filters D Air supply filter gray Service lid B Opening service lid In upward direction Piter imame E LA Service lid is opening closing type l ju Left side Right side B Opening method Y 1 Remove the service lid screws Air supply 4 filter Li Filter frame E Air supply filter gray BSS Hold the knob to pull up ee B C Titanium apatite photocatalytic air purifying filter 3 Pull down 2 Pull out the service lid diagonally down in the direction of the arrow Holes 4 locations Air filters E Wireless E remote E controller Before screwing the remote controller holder to the wall make sure that control signals are properly received by indoor unit Screws field supply M3 x 20L 1T F Remote controller holder INTELLIGENT EYE sensor N CAUTION 1 Do not hit or violently push the INTELLIGENT EYE sensor This can lead to
118. cided the system stops after operating for continuous 9 minutes Adjustment when the thermistor is disconnected When compressor stop repeats specified time the system should be down 3 12 8 Control when frequency is changed When the target discharge pipe temperature control is active if the target frequency is changed for a specified value in a certain time period cancel the target discharge pipe temperature control and change the target opening of the electronic expansion valve according to the shift 3 12 9 High Discharge Pipe Temperature When the compressor is operating if the discharge pipe temperature exceeds a certain value the electronic expansion valve opens and the refrigerant runs to the low pressure side This procedure lowers the discharge pipe temperature 3 12 10 Oil Recovery Function Outline Detail The electronic expansion valve opening in the cooling stopped room must be set as to open for a certain time at a specified interval so that the oil in the cooling stopped room may not be accumulated During cooling operation every 1 hour continuous operation the electronic expansion valves in the operation stopped room must be opened by 80 pulses for specified time 3 12 11 Target Discharge Pipe Temperature Control 51 The target discharge pipe temperature is obtained from the indoor and outdoor heat exchanger temperature and the electronic expansion valve opening is adjusted so that the actual discharge pipe t
119. ck No 02 Refer to P 169 Check No 17 Refer to P 176 155 SiBE12 908_A Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Is the stop NO valve opened Open the stop valve YES Check refrigerant leakage N YES Oil oozing at relay pipe tions Repair flared portion of connections piping or replace square union NO Oil oozing at YES internal piping Check the power transistor YES harness for looseness Correct it as required Replace the cracked pipe NO Check the piping for improper contact Correct as required Replace the cracked pipe NO Compressor vibrates too much Check No 17 Check electronic expansion NO valve YES Replace the electronic expansion valve Does refrigerant YES heat exchange drift occur Replace the heat exchanger Replace with the specified quantity of refrigerant Is refrigerant shortage fault repeated YES NO Check No 02 NO Thermistor check Replace the defective thermistor room temperature outdoor air YES indoor or outdoor heat exchanger thermistor Replace the outdoor unit PCB Is refrigerant shortage fault repeated S Replace the compressor NO Procedure complete Procedure complete R9450 Service Diagnosis SiBE12 908_A Troubleshooting 2 32 Over Voltage Protect
120. cnccncccnnnnncnncncnnnnnonnccnnnnnonananons 117 27 Indoor Unit PCB Abnormallly taa dd das 120 2 8 Freeze up Protection Control or Heating Peak cut Control 121 2 9 Fan Motor DC Motor or Related Abnormality 123 2 10 Thermistor or Related Abnormality Indoor Unit 125 2 11 Humidity Sensor Abnormality oooccccconcncconcnncnoncnoconncnnonacncnnncnnnnos 126 2 12 Signal Transmission Error Indoor Unit Outdoor Unit 127 2 13 Incompatible Power Supply between Indoor Unit and Outdoor Unit 129 2 14 Incomplete Setting for Hose Length 130 2 15 Freeze up Protection in Other Rooms Unspecified Voltage between Indoor and Outdoor Une 131 2 16 Outdoor Unit PCB Abnortmalily ci dio ia 132 2 17 OL Activation Compressor Overload 00nn00nnnannoannoannnnneonnennnnnnnnne 133 2 19 COMPLESSO HOCK o eui o t te 134 2 19 DG Fari LOCK iota et tet Lr Ehe e te obe leote PET ut 135 2 20 Input Overcurrent Detection s nnnsennnsenenenrerrnrrnrnnnnsrrrrnrrrsnrrrernrreenee 136 2 21 Discharge Pipe Temperature Control 138 2 22 High Pressure Control in CGoolmg 139 2 23 Compressor Sensor System Abnormality sessssssss 141 Table of Contents SiBE12 908_A 2 24 Damper ein ed EE 142 2 25 Position Sensor Abnormality iison 143 2 26 DC Voltage DC Current Sensor Abnormality
121. condition appears whenever turning on the power supply again after turning it off Monitor the supply voltage discharge and suction pressures and other factors for a long term Hepeated Possible causes Momentary supply voltage drop Keep on using as it is Compressor motor overloaded rr monitoring Short circuit Check connectors and Turn off the power supply and other fittings of electric disconnect U V and W components harnesses Check No 14 Inverter checker Check the inverter by the Part No 1225477 inverter checker YES Is LED turned off Rectify the power supply or replace the outdoor unit PCB Check No 15 Check the power transistor NO Replace the outdoor unit PCB YES Turn off the power supply replace the harnesses and restart the compressor after turning on the power supply again Check the supply voltage NO Rated voltage Rectify the power supply YES Short circuit or YES breakage between compressor s coil phases Replace the compressor Check No 16 Discharge pressure check Check No 03 Installation condition check R14123 Service Diagnosis SiBE12 908_A Troubleshooting 2 31 Refrigerant Shortage Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Service Diagnosis ni LI Refrigerant shortage detection I Refrigerant shortage is detected by checking the inpu
122. control HA 3 S25 Connector for INTELLIGENT EYE sensor PCB 4 S32 Connector for heat exchanger thermistor 5 S41 Connector for swing motor 6 S46 Connector for display PCB 7 S47 Connector for signal receiver PCB PCB 2 Signal Receiver PCB 1 S48 Connector for control PCB PCB 3 Display PCB 1 S49 Connector for control PCB PCB 4 INTELLIGENT EYE sensor PCB 1 S26 Connector for control PCB i Note Other designations PCB 1 Control PCB 1 V1 Varistor 2 JA Address setting jumper JB Fan speed setting when compressor is OFF on thermostat JC Power failure recovery function auto restart Refer to page 258 for detail 3 LED A LED for service monitor green 4 FU1 F1U Fuse 3 15A 250V PCB 3 Display PCB 1 SW1 S1W Forced operation ON OFF switch 2 LED1 LED for operation multi color 3 LED2 LED for timer yellow 4 LED3 LED for INTELLIGENT EYE green 5 RTH1 R1T Hoom temperature thermistor 9 Printed Circuit Board Connector Wiring Diagram SiBE12 908_A Printed Circuit Board Connector Wiring Diagram PCB Detail PCB 1 Control PCB V1 A S41 R10337 PCB 2 Signal Receiver PCB PCB 3 Display PCB RTH1 GW LED3 LED2 LED 3 886013 1 FE ee KC 3EB86013 Printed Circuit Board Connector Wiring Diagram Printed Circuit Board Connector Wiring Diagram 1 2 Outdoor Units Connectors d Note PCB 1 Control PCB 1 920 Other Desi
123. cross sections circled in Fig 2 Fig 1 Fig 2 R1444 R1736 3 6 Main Circuit Electrolytic Capacitor Check Check No 11 B Do not touch the live parts within 10 minutes after the breaker is turned off m Even after that when you touch the parts check that there is no DC voltage with a tester B Check the continuity with a tester It is OK if the tester shows good continuity when pins are replaced Set the tester to the resistance measuring range If the pointer swings If the pointer does not and returns the swing or does not return electrolytic capacitor is the electrolytic capacitor is OK out of order R3466 171 Service Diagnosis SiBE12 908_A Check 3 7 Refrigerant System Check Check No 12 pelele Se ee E Models with discharge pipe thermistor refrigerant shortage are to be checked Is the discharge pipe YES thermistor disconnected Rectify from the holder NO Is the temperature o YES Four way valve operation suction pipe of four way valve extremely high fault replace it Refrigerant leakage check Refer to the refrigerant shortage detection Replace the refrigerant R9461 Service Diagnosis 172 Check SiBE12 908_A 3 8 Inverter Checker Check Check No 14 B Characteristics If abnormal stop occurs due to compressor startup failure or overcurrent output when using inverter unit it is difficult to judge whether it is caused by the com
124. ctify connector and fan motor lead wire Check No 16 Discharge pressure check NG Replace the stop valve OK Check No 17 Electronic expansion valve check NG Replace the main body or coil of the electronic expansion valve OK Replace the outdoor unit PCB Check No 02 Heat exchanger thermistor check NG Replace the outdoor heat exchanger thermistor OK Replace the outdoor unit PCB R9852 140 Troubleshooting SiBE12 908_A 2 23 Compressor Sensor System Abnormality Remote Controller Display Cn LI Method of Fault condition is identified by DC current which is detected before compressor startup Malfunction Detection Malfunction B When the DC voltage is 50 V or less Decision Conditions Supposed B Defective PCB Causes B Harness disconnection defective connection Troubleshooting MN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Replace the outdoor unit PCB 141 Service Diagnosis SiBE12 908_A Troubleshooting 2 24 Damper Abnormality Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Service Diagnosis ON nm Detected by the limit switch LS in the humidifier unit B limit switch does not turn on or off when the operation of humidifier unit starts or finishes For example when turning on the power supply when humidifi
125. d Gas pipe RO Liquid wipe KE e Humidifying hose Insulation tape onnection wire C Drain hose R10879 MN Caution In pump down work be sure to stop the compressor before disconnecting the refrigerant pipe If the refrigerant pipe is disconnected with the compressor being operated and the stop valve being open air may be sucked in to generate an over pressure in refrigeration cycle thus resulting in pipe rupture or accidental injury B Place a plastic bag under the drain pan to prevent from wetting the floor with remaining drain If the drain hose is embedded in the wall disconnect the drain hose beforehand Carry out the removal works with 2 pair of spanners When the pipes are disconnected protect the both openings of pipe side and unit side from entering of moisture Removal Procedure SiBE12 908_A Step 2 Removing the heat exchanger Unfasten the hook of the pipe fixing plate at the back of the unit and pull out the pipe Widen the auxiliary pipe by about 10 20 degrees Remove the 2 screws on the left side of the unit Unfasten the lower hook on the right side of the unit with a flat screwdriver Removal Procedure Procedure Pip fixing plate R10622 Unbending angle SS BAH SAN R10543 E Lower hook R10326 Indoor Unit Preparation B Remove the indoor un
126. d e Stop valve defective Functioning Replace the outdoor unit PCB R9442 Service Diagnosis 138 Troubleshooting SiBE12 908_A 2 22 High Pressure Control in Cooling Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes 139 M e L During cooling high pressure control stop frequency attenuation etc is executed according to the temperature detected by the heat exchanger thermistor m Activated when the temperature being sensed by the heat exchanger thermistor rises above 65 C Deactivated when the temperature drops below 53 C Insufficient installation space Defective outdoor fan Defective electronic expansion valve Defective heat exchanger thermistor Defective outdoor unit PCB Defective stop valve Service Diagnosis SiBE12 908_A Troubleshooting Check No 02 Refer to P 169 Check No 03 Refer to P 170 Check No 05 Refer to P 170 Check No 16 Refer to P 175 Check No 17 Refer to P 176 Service Diagnosis Troubleshooting Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred AN Caution Check installation space Check No 03 Installation condition check Change the position of air discharge grille Change installation position Clean the heat exchanger Check No 05 Outdoor fan system check Replace the fan motor Re
127. dity of the outdoor air and of the humidified air in front of the indoor outlet using thermal hygrometer Airflow rate m min At HUMID HEAT operation as room temperature rises relative humidity is temporarily lowered This is because as room temperature rises relative humidity is lowered even if the moisture content is the same e g The rise in the room temperature from 15 C to 25 C results in the fall in humidity from 40 RH to about 22 RH As humidifying operation starts concurrently with heating humidity rises gradually as shown in the figure below Some room conditions floor space ventilation frequency number of residents etc and temperature settings mostly higher settings may result in unsatisfactory humidity settings Humidity Fluctuation on HUMID HEAT Operation Humidity 100 90 lt u HUMID HEAT start 80 AN When room temperature rises 70 relative humidity is lowered N even if the moisture content is 60 same Setting temp 50 17 20 40 23 Humidity rises 30 gradually Heating without 20 humidifying setting temp 23 10 0 20 40 60 80 100 Time min Measurement Conditions Outdoor temp 7 HUMID HEAT operation setting Temp each setting as below Humidity CONT Continuous Airflow rate setting H tap Area of the room 26 4 m Humidifying hose length 4 0 m Ventilation 0 75 times hour 0 5 times of natural ventilation 0 25 times of humidity a
128. door Unit SiBE12 908_A Step Procedure Pos 223 Push up the limit switch with a flat screwdriver TN N N d ap Lt Disconnect the terminals Release the harness from the hooks and remove the harness ASSY EVANS v Ss HELP A A D fe o 9 A L KE f y AS EN d j C Removal Procedure Outdoor Unit SiBE12 908_A Procedure 2 Removal of the m When replacing the humidifying thermistor order a seal material together humidifying thermistor Peel off the seal material thermistor B When reassembling put the harness through under the limit switch cover SZA E y 2 SL Limit switch co 224 Removal Procedure Outdoor Unit SiBE12 908_A 2 5 Removal of the Fan valve duct ASSY Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Poms Preparation B Remove the heater ASSY and the humidifying rotor B The humidifying rotor is located under the heater ASSY and the duct Duct adsorption side Humidifying rotor motor 1 Remove the 7 screws B Do not dismantle the fan of the fan valve duct valve duct ASSY ASSY Heplace it as a unit Fan valve duct ASSY 225 Removal Procedure Outdoor Unit SiBE12 908_A Procedure B Release
129. door units Conditions Supposed B Operation halt due to the freeze up protection in other rooms Causes B Wrong connections at the indoor unit B PCB wrongly connected Troubleshooting Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Error displaying air o conditioner running The freeze up protection is activated in other rooms Refer to 55 Supply voltage as Correct specified Check the model number Reconnect Check the combination of all the models being connected R7151 131 Service Diagnosis SiBE12 908_A Troubleshooting 2 16 Outdoor Unit PCB Abnormality Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Service Diagnosis I gt nn Detect within the program of the microcomputer that the program is in good running order Detect input of zero cross signal m When the program of the microcomputer is in bad running order m Zero cross signal can not be detected B Out of control of microcomputer caused by external factors e Noise e Momentary fall of voltage e Momentary power loss B Defective outdoor unit PCB B Breakage of harness between PCBs Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Power on again Does the LED A blink NO Replace the outdoor unit
130. e after turning off the relay harness power supply before disconnecting the connectors Removal Procedure 214 Outdoor Unit SiBE12 908_A 215 Procedure Disconnect the 4 relay connectors Disconnect the connector for humidifier fan motor Remove the 4 screws of the humidifier unit and lift it up to remove Kl Eil q A SS Relay connectors R9886 umidifer fan motor de R9887 Humidifier unit B Do not pull the harnesses from the outdoor unit strongly so as not to loose the hook of the mounting plate See the illustration below on this page for the mounting plate Be sure to wait 10 minutes or more after turning off the power supply before disconnecting the connectors Pull out the connector while pushing up the hook on the bottom side When lifting up the humidifier unit be careful not to pull the relay harnesses forcibly When reassembling the humidifier unit make sure the mounting plate is hooked refer to page 232 and do not forget to connect the relay connectors Removal Procedure SiBE12 908_A Outdoor Unit 2 2 Removal of Heater ASSY Humidifying Rotor Moisture Adsorption Element Humidifying Rotor Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points Internal structure of
131. e bridge and the heat radiation fin To firmly tighten the screws of the power transistor and the diode bridge and to surely contact to the heat radiation fin without any gap Example Take out a PCB Power transistor TRM TPM IGBT IPM SPM etc Diode bridge Rectifier stack etc Diode bridge Not applied Paper wastage OK Evenly applied NG Not evenly NG Foreign object silicon grease applied R9056 259 Others SiBE12 908_A Part 9 Appendix Le TP IDING RI e Le 261 Wed ARCO UNES t 261 12 DUO In UE 262 24 WNO DIA AMS adds 263 Sch aes UA Slds 263 2 2 Qutdoor DIIS seme coma do einen te dot assai tede addo eset aetate 264 Appendix 260 Piping Diagrams 1 Piping Diagrams Indoor Units 1 1 CTXU25 35 42G2V1B 261 FIELD PIPING 6 4CuT FIELD PIPING 9 5CuT INDOOR UNIT CROSS FLOW FAN ON HEAT EXCH 1 FAN MOTOR REFRIGERANT FLOW COOLING 9 HEATING 4D058897A CTXU50G2V1B FIELD PIPING 6 4CuT FIELD PIPING 12 7CuT SiBE12 908_A INDOOR UNIT 6 4CuT REFRIGERANT FLOW COOLING HEATING 4D058898A Appendix SiBE12 908_A 1 2 Outdoor Units Piping Diagrams
132. e entire reservation of the source day of the week is copied in the copy mode Detailed settings can be made after the copy is completed Installation Operation Manual 98 Operation Manual SiBE12 908_A B Confirming a reservation The reservation can be confirmed de ON o a d ie ENE ON n Falc ec TUE TUE Ju SR IA e S E Normal display Confirmation display t fc mm 1 Press PROGRAM button MH ON OFF The day of the week and the reservation number of the current day will be displayed HUM TEMP 2 Press SELECT button to select the day of the week and H ESSE m m p 13 the reservation number to be confirmed moDE xo 3 Pressing the SELECT button displays the reservation details POWERFUL COMFORT SWING L 3 Press PROGRAN button 4 6 7 COPY Exit confirming mode A NEXT e is displayed on the LCD and WEEKLY TIMER operation is activated CON The TIMER lamp lights up 2 5 Te MULTI Y MONITOR E MAL RD Gr E To deactivate WEEKLY TIMER operation 4 Press WEEKLY button while is displayed on the LCD e The will disappear from the LCD The TIMER lamp goes off To reactivate the WEEKLY TIMER operation press the WEEKLY button again e If a reservation deactivated with WEEKLY button is activated once again the last reservation mode will be used B To delete reservations The individual reservation
133. e heating operation Cooling dry No continuity Heating Continuity S80 voltage at DC 130 230 V for 3 sec after compressor starts and then at about DC 12 15V after that Fig 1 NO YES Disconnect the four way valve coil from the connector and check the continuity Four way valve coil resistance at 300 600 Q Fig 1 Voltage at S80 3 Sec DC180 280V DC12 15V Compressor Time ON Service Diagnosis Check Replace the outdoor unit PCB Replace the outdoor unit PCB Replace the four way valve Coil Replace the four way valve R9462 180 181 kb 2 SiBE12 908_A Part Removal Procedure NACO Ulla 182 Jd TREMOVAIORAIE Ae 182 12 Removal Of Front TEE 185 1 3 Removal of Front Grille cccoccccocccoonncocnccorncornconrnnnnncncnnonnnnns 187 1 4 Removal of Horizontal Blades and Vertical Blades 190 1 5 Removal er Electrical BOX siria 194 tO Removal OF OB usto dte iria 197 1 7 Removal of the Connecting Duc 202 1 8 Removal of Heat Evchanger AE 203 129 JREMOVal or EE 206 1 19 Removal of Fam TOON arrienda 210 CUT OO Ulsa 213 2 1 Removal Of Humidifier UNIW EG 213 2 2 Removal of Heater ASSY Humidifying Rotor Moisture Adsorption Element Humidifying Rotor Motor 216 2 3 Removal of Damper Motor 220 2 4 Removal of Limit Switch Humidifying Thermistor
134. e room temperature and setting temperature at the time of the operation startup and automatically operates in that mode The unit automatically switches the operation mode to cooling or heating to maintain the room temperature at the main unit setting temperature Detailed 1 Remote controller setting temperature is set as automatic cooling heating setting Explanation of temperature 18 to 30 C the Function 2 Main unit setting temperature equals remote controller setting temperature 3 Mode switching point are as follows 1 Heating gt Cooling switching point Room temperature gt Main unit setting temperature 3 0 deg 2 Cooling gt Heating switching point Room temperature Main unit setting temperature 2 5 deg 3 Thermostat ON OFF point is the same as the ON OFF point of cooling or heating operation 4 During initial operation Room temperature gt Remote controller setting temperature Cooling operation Hoom temperature Remote controller setting temperature Heating operation Cooling Operation Set point 3 0 C rm be vn vn rn rn ms Set point 2 0 C Set point 2 0 C Thermostat OFF ThermostatOFF Set point 2 5 C Heating Operation R9417 Ex When the set point is 25 C Cooling Operation gt 23 C Thermostat OFF gt 22 C Switch to Heating Operation Heating Operation gt 27 C Thermostat OFF gt 28 C Switch to Cooling Operation 17 Function and Control SiBE12 908_A Ma
135. e to closed stop valve Input voltage fault Service Diagnosis SiBE12 908_A Troubleshooting Troubleshooting MN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check No 14 Refer to P 175 Discharge pressure check E Replace stop valve Refer to P 179 E YES Check No 29 Short circuit check NO Replace Outdoor unit PCB Outdoor fan YES Humidification fan Four way valve coil Check the voltage of electrolytic capacitor NO Replace the outdoor unit PCB YES Is the harness of electric component or compressor connected properly NO Connect properly Turn off the power supply and disconnect U V and W harnesses Check No 14 Inverter checker Check the inverter by the Part No 1225477 inverter checker YES Is LED turned off Rectify the power supply or replace the outdoor unit PCB Replace the compressor R14122 Service Diagnosis 144 Troubleshooting SiBE12 908_A 2 26 DC Voltage DC Current Sensor Abnormality Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting 145 A I HN D wm DC voltage or DC current sensor system abnormality is identified based on the compressor operation frequency and the input current detected by the product of DC current and DC voltage When the com
136. eck 3 11 Electronic Expansion Valve Check Check No 17 Check the electronic expansion valve EV as follows 1 Check if the EV connector properly inserted into the control PCB Collate the number of EV main body with that of the connector 2 Check to see that clatter latching sound is heard from all of the EVs when turning on the power supply again after turning it off 3 If there are EVs which do not sound clatter disconnect the connectors of these EVs and check them for continuity Harness 6 wires 6 pin connector 123456 5 2 5 4 6 1 6 3 Check R6028 4 fthere is no clatter latching sound on all of the EVs in step 2 the outdoor PCB is defective 5 For EVs for which continuity is established in step 3 connect the coil which sounded clatter to the EV main body which did not sound and make sure the latching sound be heard again If latching sound is heard outdoor unit PCB is defective If there is no latching sound the EV main body is defective d Note Latching sound varies by each valve Service Diagnosis 176 Check SiBE12 908_A 3 12 Rotating Pulse Input on Outdoor Unit PCB Check Check No 23 lt For outdoor fan motor or humidifying fan motor gt B Outdoor fan motor Make sure that the voltage of 270 30 V is applied Set operation OFF and power OFF Remove the connector S70 Check that the voltage between the pins 4 7 is 270 VDC Check that the control voltage between the pins 3 4 is 15 VDC Check t
137. ect pipes Refer to How to Use Reducers for information on reducer numbers and their shapes How to Use Reducers No 1 No 2 412 7 gt 09 5 412 7 gt 09 5 e la A Gasket 1 Gasket 2 Use the reducers supplied with the unit as described below e Connecting a pipe of 9 5 to a gas pipe connection port for 412 7 Inter unit piping No 1 Flare nut for 412 7 Be sure to attach the gasket e When using the reducer packing shown above be careful not to overtighten Flare nut tightening torque the nut or the smaller pipe may be damaged about 2 3 1 the normal torque Apply a coat of refrigeration oil to the threaded connection port of the outdoor Connection port of outdoor unit unit where the flare nut comes in 49 5 60 3N em Flare nut for 012 7 B05 615kgf cm Use an appropriate wrench to avoid damaging the connection thread by overtightening the flare nut Precautions on Installation e Check the strength and level of the installation ground so that the unit will not cause any operating vibration or noise after installed e In accordance with the foundation drawing in fix the unit securely by means of the foundation bolts Prepare four sets of M8 or M10 foundation bolts nuts and washers each which are available on the market e It is best to screw in the foundation bolts until their length are 20mm from the foundation surface zv Installation Operation Manual 68
138. ective heat exchanger thermistor Cooling outdoor heat exchanger thermistor heating indoor heat exchanger thermistor 146 Troubleshooting SiBE12 908_A Troubleshooting UL MN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check No 02 Refer to P 169 Turn on the power supply again Does the remote controller display the error code again YES Check No 02 Thermistor resistance check NO Reconnect properly Replace the thermistor Check No 02 Thermistor resistance check NO Replace the thermistor YES Replace the outdoor unit PCB R9446 t Und z U Radiation fin thermistor Discharge pipe thermistor Outdoor heat exchanger thermistor Liquid pipe thermistor Gas pipe thermistor Outdoor air thermistor Lu vi H L e gt gt gt gt i KE RC a H al t 147 Service Diagnosis SiBE12 908_A Troubleshooting 2 28 Abnormal Temperature in Electrical Box Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Service Diagnosis pe Temperature rise in the electrical box is identified based on the temperature of the radiation fin detected by the fin thermistor with the compressor off m With the compressor off the radiation fin temperature is above 80 C The error is cleared when the
139. ectronic expansion valve opening when the system is starting or the operating room is changed and prevent the system to be super heated or moistened 3 12 7 Disconnection of the Discharge Pipe Thermistor Outline Detect a disconnected discharge pipe thermistor by comparing the discharge pipe temperature with the condensation temperature If the discharge pipe thermistor is disconnected open the electronic expansion valve according to the outdoor air temperature and the operating frequency and operate for a specified time and then stop After 3 minutes of waiting restart the unit and check if the discharge pipe thermistor is disconnected If the discharge pipe thermistor is disconnected stop the system after operating for a specified time If the disconnection is detected 5 times in succession then the system is shut down Function and Control 50 Control Specification Detail SiBE12 908_A Detect Disconnection If a 720 second timer for open control becomes over the following adjustment must be made 1 When the operation mode is cooling When the discharge pipe temperature is lower than the outdoor heat exchanger temperature the discharge pipe thermistor disconnection must be ascertained 2 When the operation mode is heating When the discharge pipe temperature is lower than the max temperature of operating room heat exchanger the discharge pipe thermistor disconnection must be ascertained When the condition of the above 1 or 2 is de
140. ed part in the figure 3 Replace the electrical wiring cover as it was and pull the harness around as shown in the figure HA connector S21 Lay the HA cord as shown in the figure e Removal methods of metal plate electrical wiring covers 1 Remove the front grille 2 Remove the electrical wiring box 1 screw 3 Raise the 2 upper parts of the metal plate electrical wiring cover pull the parts frontward and remove the 3 tabs 4 Slide the metal plate electrical wiring cover upward and remove the 2 tabs on the lower side 3 Raise the 2 upper parts of the 4 Slide the metal plate electrical wiring metal plate electrical wiring cover cover upward and remove the 2 tabs on pull the parts frontward and Pull the lower side remove the 3 tabs 4 2 Remove the electrical wiring box 1 screw 57 Installation Operation Manual SiBE12 908_A Installation Manual e Attachment methods of metal plate electrical wiring covers Attach the metal plate electrical wiring covers as shown below 1 Lean the metal plate electrical wiring cover as shown in the figure and attach tab 1 on the lower side to the electrical wiring box 2 Attach tab 2 on the lower side of the metal plate electrical wiring cover
141. efrigerant make sure that there is no refrigerant leak If the leaking point cannot be located and the repair work must be stopped be sure to perform pump down and close the service valve to prevent the refrigerant gas from leaking into the room The refrigerant gas itself is harmless but it may generate toxic gases when it contacts flames such as fan and other heaters stoves and ranges When relocating the equipment make sure that the new installation site has sufficient strength to withstand the weight of the equipment If the installation site does not have sufficient strength and if the installation work is not conducted securely the equipment may fall and cause injury Introduction SiBE12 908_A Check to make sure that the power cable plug is not dirty or loose then insert the plug into a power outlet securely If the plug has dust or loose connection it may cause an electrical shock or fire Be sure to install the product correctly by using the provided standard For unitary type installation frame only Incorrect use of the installation frame and improper installation may cause the equipment to fall resulting in injury Be sure to install the product securely in the installation frame mounted on the For unitary type window frame If the unit is not securely mounted it may fall and cause injury When replacing the coin battery in the remote controller be sure to disposed of the old battery to prevent children fro
142. eft rotary shaft to the right and release it Rotary shaft R10284 Slide the right rotary shaft to the left and release it R7909 Remove the front panel R10285 185 Removal Procedure SiBE12 908_A Indoor Unit 5 When mounting the Caution on Mounting front panel make sure git B When mounting the front that the projection is panel fit the right and left fitted in the guide rotary shafts one by one into before closing the the grooves and fully push panel them in position R10286 Removal Procedure 186 Indoor Unit SiBE12 908_A 1 3 Removal of Front Grille Procedure MN Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Removing the service cover Remove the screw of Preparation the service cover B Remove the front panel according to the Removal of Front Panel Service cover R10343 Pull out the service cover diagonally down in the direction of the arrow The figure shows the appearance of the inside 2 Removing the front grille Remove the screws one each at the right and left R10289 187 Removal Procedure SiBE12 908_A Step Procedure 2 Release the 3 hooks at the top 3 Putyour fingers into the front grille
143. emperature becomes close to the target discharge pipe temperature Indirect SH superheating control using the discharge pipe temperature The target discharge pipe SC temperature is set as to become the aiming SH Supercool The inclination does not change depending on the operating condition SH Superheat R10626 The electronic expansion valve opening and the target discharge pipe temperature are adjusted every 20 seconds The target discharge pipe temperature is controlled by indoor heat exchanger temperature and outdoor heat exchanger temperature The opening degree of the electronic expansion valve is controlled by followings Target discharge pipe temperature Actual discharge pipe temperature Previous discharge pipe temperature Function and Control SiBE12 908_A Control Specification 3 13 Malfunctions 3 13 1 Sensor Malfunction Detection Sensor malfunction may occur either in the thermistor or current transformer CT system Relating to Thermistor Malfunction Outdoor heat exchanger thermistor Discharge pipe thermistor Fin thermistor Gas pipe thermistor Outdoor air thermistor Liquid pipe thermistor Relating to CT Malfunction When the output frequency is more than 52 Hz and the input current is less than 1 25A carry out abnormal adjustment DIANA 3 13 2 Detection of Overload and Overcurrent Outline Detail In order to protect the inverter detect an excessive
144. ency is not change more than a certain fixed time adjust the frequency up and down according to the ZAD value When the ZAD value is small lower the frequency When the ZAD value is large increase the frequency 3 Limit of frequency variation width When the difference between input current and input current drooping value is less than 1 A the frequency increase width must be limited 4 Frequency management when other controls are functioning When each frequency is drooping Frequency management is carried out only when the frequency droops For limiting lower limit Frequency management is carried out only when the frequency rises 5 Upper and lower limit of frequency by PI control The frequency upper and lower limits are set depending on the total of S values of operating room When low noise commands come from the indoor unit more than one room or when outdoor unit low noise or quiet commands come from all the rooms the upper limit frequency must be lowered than the usual setting 42 Control Specification SiBE12 908_A 3 4 Controls at Mode Changing Start up 3 4 1 Preheating Operation Outline Operate the inverter in the open phase operation with the conditions including the preheating command from the indoor the outdoor air temperature and discharge pipe temperature Detail Preheating ON Condition When outdoor air temperature is below 10 5 C and discharge pipe temperature is below 10 5 C inverter in open phase o
145. equal 37 Function and Control SiBE12 908_A D Indoor Heat Exchanger Thermistor E Liquid Pipe Thermistor Function and Control Function of Thermistor The indoor heat exchanger thermistors are used for controlling target discharge pipes temperature The system sets a target discharge pipe temperature according to the outdoor and indoor heat exchanger temperature and controls the electronic expansion valve opening so that the target discharge pipes temperature can be obtained The indoor heat exchanger thermistor is used to prevent freezing During cooling operation if the temperature drops abnormally the operating frequency becomes lower then the operation halts The indoor heat exchanger thermistor is used for anti icing control During cooling operation if the heat exchanger temperature in the room where operation is halted becomes 1 C or if the room temperature heat exchanger temperature in the room where operation is halted becomes 210 C it is assumed as icing The indoor heat exchanger thermistor is used for heating peak cut control During heating operation if the temperature rises abnormally the operating frequency becomes lower then the operation halts The indoor heat exchanger thermistors are used for detecting disconnection of the discharge pipe thermistor when heating When the discharge pipe temperature become lower than the maximum temperature of the indoor heat exchanger temp
146. erature the discharge pipe thermistor is judged as disconnected The indoor heat exchanger thermistors are also used for preventing abnormal high pressure When only one indoor unit is operating the indoor heat exchanger thermistor is used for supercooling control The actual supercool is calculated from the liquid pipe temperature and the heat exchanger temperature The system controls the electronic expansion valve opening to reach the target supercool When only one indoor unit is heating the indoor liquid pipe thermistor is used for a supercooling control The system calculates the actual supercool with the liquid pipe temperature and the maximum heat exchanger temperature between rooms and controls the opening of the electronic expansion valve to reach the target supercool When all indoor units are heating the liquid pipe thermistor is used for liquid pipes isothermal control The system controls electronic expansion valve opening so that liquid pipe temperature in each room becomes equal 38 Control Specification SiBE12 908_A 3 Control Specification 1 Mode Hierarchy 3 Outline Detail 39 d Note Decision of the operation mode There are two modes the mode selected in user s place normal air conditioning mode and forced operation mode for installation and providing service There are following modes stop cooling includes drying heating include defrosting Air conditioner control
147. erature control Refer to page 44 B Input current control Refer to page 45 B Compressor protection function Refer to page 44 B Heating peak cut control Refer to page 46 B Freeze up protection control Refer to page 45 B Defrost control Refer to page 47 Forced Cooling For more information refer to page 256 Operation 15 Function and Control SiBE12 908_A Main Functions 1 2 Thermostat Control Thermostat control is based on the difference between the room temperature and the set point Function and Control Thermostat OFF Condition 4 The temperature difference is in the zone A Thermostat ON Condition 4 The temperature difference is above the zone C after being in the zone A The system resumes from defrost control in any zones except A The operation turns on in any zones except A The monitoring time has passed while the temperature difference is in the zone B Cooling Dry 10 minutes Heating 10 seconds Cooling Dry ON Room temperature set point Cooling 0 5 C C Dry 0 5 C B Cooling 2 0 C A Dry 2 5 2 0 C OFF R4668 Heating OFF Room temperature set point A 20 C B C 0 5 C ON R9424 16 Main Functions SiBE12 908_A 1 3 Automatic Operation Automatic Cooling Heating Function When the AUTO mode is selected with the remote controller the microcomputer automatically determines the operation mode from cooling and heating according to th
148. filter virtually immune to mold 1 13 8 Auto restart Function Even if a power failure including one for just a moment occurs during the operation the operation restarts in the condition before power failure automatically when power is restored Note It takes 3 minutes to restart the operation because the 3 minute standby function is activated Function and Control 34 Main Functions SiBE12 908_A 1 14 Table for Special Modes 35 Normal mode Indoor ON OFF 5 9 sec CANCEL 5 sec MODE TEMP A TEMP y l e Indoor ON OFF A Forced operation mode e Left for 15 min e CANCEL 5 B Easy diagnosis mode C pee e Left for 60 sec Mode selection view Select with TEMP A or w button Left for 60 sec MODE e MODE 5 sec DE Service check mode Diagnosis Left for 60 sec MODE Bpa Trial operation mode o ps pesano DES Pipe check mode Drying mode Humiditying airflow rate setting mode 7 Monitor brightness I MODE Monitor brightness MODE 5 sec setting mode setting e Left for 60 sec Operation OFF e Left for 30 min Normal mode e Left for 60 sec R9416 A Forced operation mode The buzzer beeps and the timer and multi colored indicator lamp illuminate Refer to page 256 for detail B Easy diagnosis mode You can identify the error code in a quite simple way but some of the error codes do not appear on the LCD
149. gnations PCB 1 Control PCB 1 LEDA 2 FU1 FU2 3 FU3 4 J9 J10 SiBE12 908_A Connector for electronic expansion valve coil A port Connector for electronic expansion valve coil B port Connector for damper motor Connector for rotor motor Connector for overload protector Connector for terminal strip thermal fuse Connector for DC fan motor Connector for humidifying fan motor Connector for four way valve coil Connector for thermistor outdoor air heat exchanger discharge pipe Connector for thermistor gas pipe Connector for thermistor liquid pipe Connector for limit switch Connector for hygroscopic fan motor Connector for humidifying heater Service monitor LED green Fuse 3 15A 250V Fuse 30A 250V Jumper for priority room setting Refer to page 40 Printed Circuit Board Connector Wiring Diagram SiBE12 908_A PCB Detail PCB 1 Control PCB FU1 FUS HK1 e To Printed Circuit Board Connector Wiring Diagram 45 501 EFA dS Ven GEZ A T1 E C LED A Y Tne e FOO lm Sea e ODDS A e Amm GT Wi S23 SE n Se EC iHe i E ES be Ll ip a Tem A we EN E d S80 S20 S21 Printed Circuit Board Connector Wiring Diagram 5 gt Hi A mf SPCB2198 1 o d e ba Cin EE DEI ILL 91 92 S90 S40 S70 S72 J10 J9 R10338 12 13 SiBE12 908_A Part 4 Function and Control ll
150. gs Freeze up protection in other rooms unspecified voltage between 131 System indoor and outdoor units No display Lights out of microcomputer status lamp Service Diagnosis 108 Troubleshooting 2 2 Air conditioner does not run Method of Malfunction Detection Malfunction Decision Conditions Supposed B Power supply is OFF Causes B improper power supply voltage B improper connection of wire B incorrect combination of indoor unit and outdoor unit B Battery shortage of remote controller B Invalid address setting B Protection device works dirty air filter refrigerant shortage over filling mixed air etc B Transmission error between indoor unit and outdoor unit Defective PCB on outdoor unit 109 SiBE12 908 A Service Diagnosis SiBE12 908_A Troubleshooting Troubleshootin J Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Is the power supply plug inserted into the outlet or the breaker for the power supply breaker ON NO Insert the power supply plug into the outlet Turn on the breaker for the power supply YES NO YES Do the other electric appliances work Power failure Wait till the power failure restored YES NO Is the supply voltage NO appropriate Connect properly to the power supply check varistor and fuse NO YES Is the supply voltage within the rated voltage Ask electric
151. gs observe the following 1 Insulation material Polyethylene foam Heat transfer rate 0 041 to 0 052W mK 0 035 to 0 045kcal mhe C Gas pipe Refrigerant gas pipe s surface temperature reaches 110 C max Choose heat insulation materials that will withstand this temperature Finishing tape Inter unit wiring Drain hose Gas pipe insulation Humidifying 2 Be sure to insulate both the gas and liquid piping and to provide insulation Liquid pipe insulation Liquid pipe hose dimensions as below 50 class thermal insulation Thickness 0 8mm C1220T O 3 Use separate thermal insulation pipes for gas and liquid refrigerant pipes 59 Installation Operation Manual SiBE12 908_A Installation Manual Indoor Unit Installation 1 Installing the mounting plate e The mounting plate should be installed on a wall which can support the weight of the indoor unit 1 Temporarily secure the mounting plate to the wall make sure that the panel is completely level and mark the boring points on the wall 2 Secure the mounting plate to the wall with screws Recommended mounting plate retention spots and dimensions Place a leveler on raised tab 4 Recommended mounting 450 103 plate retention spots ioe 5 spots in all Bilt size M10 T 200 Bilt size M10 V amp 5 IW Y Le 14 LO Use tape measure
152. hat the rotation command voltage between the pins 2 4 is 5 VDC Keep operation OFF and power OFF Connect the connector S70 Check whether 2 pulses 0 15 V are output at the pins 1 4 when the fan motor is rotated 1 turn by hand SS Qr quo po NS PCB Actual rotating pulse output 0 15V Rotation command pulse input 0 15V 15V DC270V R10759 B Humidifying fan motor Make sure that the voltage of 270 30 V is applied Set operation OFF and power OFF Remove the connector S72 Check that the voltage between the pins 5 8 is 270 VDC Check that the control voltage between the pins 4 5 is 15 VDC Check that the rotation command voltage between the pins 3 5 is 5 VDC Keep operation OFF and power OFF Connect the connector S72 Check whether 2 pulses 0 15 V are output at the pins 2 5 when the fan motor is rotated 1 turn by hand D Or S oo Io PCB S70 110 2 Q Actual rotating pulse output 0 15V 3 Q Rotation command pulse input 0 15V 4 Q 15V 5 O 6 O 7 O 8 O DC270V R10760 Fuses are commonly used as follows Refer to the corresponding wiring diagram SW power supply Hygroscopic fan motor Outdoor fan motor FU2 Humidifying fan motor Four way valve When the FU2 is melted check the outdoor fan motor for proper function 177 Service Diagnosis SiBE12 908_A Service Diagnosis Check If NG in step 2 gt Defective PCB Replace the PCB If NG in step 4 gt Defective Hall IC gt
153. he hook at the back of the shield plate JA Shield plate Hook back Lift up the shield plate a to unfasten the hooks lower and remove it Hook lower R10619 197 Removal Procedure Indoor Unit SiBE12 908_A Procedure 2 Removing the terminal O z I board by removing the 3 Removing the signal receiver unit Signal receiver unit Release the hook on the opposite side and lift up the signal receiver unit 198 Removal Procedure Indoor Unit SiBE12 908_A Step Procedure 4 Removing the INTELLIGENT EYE PCB 1 Remove the INTELLIGENT INTELLIGENT EYE We l EYE PCB PCB by opening the 3 hooks 2 Disconnect the connector S26 from the INTELLIGENT EYE PCB Pots S 5 Removing the signal receiver PCB 1 Remove the signal receiver PCB by opening the hooks at 3 positions 2 Disconnect the connector S48 from the signal receiver PCB R8091 199 Removal Procedure SiBE12 908_A Indoor Unit Step Procedure 6 l nin dili the display B The display PCB is Pa positioned on the rear side The figure shows the of the signal receiver connection of wire harness for the display PCB Display PCB R8094 Remove the display PCB by unfastening the 4 hooks Disconnect the connector S49 from the display PCB AS LED 3 Green e PA LED 2 Yell
154. heat catalyst black is applied on the upper side rotor up to remove Humidifying rotor R9900 3 Removal of the humidifying rotor motor 1 Disconnect the MERE a connector for the 4 S humidifying rotor Jr x motor S NNI ACC MO d f da D 2 W Ai EA S ZZ S 2 Remove the 2 screws of the humidifying rotor motor Humidifying rotor motor 219 Removal Procedure SiBE12 908_A Outdoor Unit 2 3 Removal of Damper Motor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure 1 Removal of the damper B Disconnect the connector motor for the humidifying rotor motor Refer to page 219 Harness ASSY Humidifying thermistor R10348 Disconnect the connector for the damper motor Removal Procedure 220 SiBE12 908_A Outdoor Unit all Lo Ou Q O D Remove the 2 screws La Remove the damper motor S Ol EEE 7 L Removal Procedure 221 SiBE12 908_A Outdoor Unit 2 4 Removal of Limit Switch Humidifying Thermistor Procedure Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Sep Poos Fine OS 1 Removal of the limit switch Harness ASSY Limit switch e 4 A U Sa i N R10812 1 Open the hooks Removal Procedure 222 Out
155. heat insulation of duct Indoor ventilation is made too often Ceiling is very high 117 Service Diagnosis SiBE12 908_A Troubleshooting Troubleshooting Service Diagnosis MN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Confirm if the conditions where HUMID HEAT operation can run are satisfied Refer to page 22 Are the conditions nO satisfied YES YES Is the priority room set Is the other unit in HUMID HEAT operation or FRESH AIR SUPPLY VENTILATION Does the each length of humidification hose exceed the specified Exceeds Under specified length Does the set hose length match with the each field hose length It does not match It matches Is the humidification Blocked filter blocked Not blocked Any breakage or blockage das on humidification hose NO Is the NO humidification hose proper YES Does the outdoor unit YES suck the exhausted air again by short circuit NO How many times are the room ventilated Small in number highly packed house or apartments Is the ceiling too high for the floor size NO 1 Continued to the next page Is it the room of priority setting Many screens consecutives room High stairwell high ceiling Explain the conditions of HUMID HEAT operation to the user Explain
156. hose is sloped downward Wrap the piping drain hose and humidifying hose Liquid ie e ae together using insulation tape fissi rias hose 5 1 Right side right back or right bottom piping Right side piping e Right back piping e Right bottom piping Cut out the piping through hole Itis recommended h Ley to use the elbow l Cut out the Install with a N I piping through hole D Humidifying hose Humidifying hose downward slope 1 Wrap the pipes hoses and inter unit wiring using insulation tape as shown in the piping bundle diagram 2 Put all the pipes through the through hole in the wall and hook the indoor unit onto the A mounting plate 3 Connect the pipes A Mounting plate 5 2 Left side left back or left bottom piping Replacing onto the left side Drain hose attachment position 1 Remove the insulation fixing screws on the right The drain hose is on the back of the unit to remove the drain hose 2 Remove the drain plug on the left side and attach it to the right side 3 Insert the drain hose and tighten with the e T screws which were removed at STEP 1 Attachment on the left side Attachment on the right side factory default Insulation ixing screw Indoor unit fixing screw Ga f waxing screw amp i Y Do not apply lubricating oil refrigeration oil when inserting Application of causes deterioration and drain leakage of the plug
157. humidifying hoses 3 Be careful not to crush the humidifying hoses in the case of bending the hoses at the time of installation Furthermore make sure that the maximum bending radius will not exceed 90 4 Check that the overall length of the humidifying hoses is definitely 3m or more 5 Attach a cover to the end of each humidifying hose so that no moisture or foreign substance Humidifvin will go into the hose when leaving the hose without being connected to the outdoor and indoor ts ying units Outdoor Indoor lt Indoor unit gt CAUTION Make sure that the number of bending times will not exceed the following limits at the time of installation 3m 8m 3 times 8 1m 10m A times 10 1m 15m 5 times mE Use the KPMH996A15S 15m set only if the overall length of the Gelee Sec Ee Ka A humidifying hoses exceeds 10m Mark the cuff on the indoor unit side so that the overall length of the hoses after adjustment will be clearly known Connect the hose according to the Use the provided joint to connect the humidifying hoses EE on pagana Insert the joint into the humidifying hoses so that there DEI menta will be no clearance between the hoses on the joint and secure the position of 10mm from the end of each hose with a binding band B Bi B Connecting KPMH996A10S 10m set B Connecting KPMH996A15S 15m set 1 Be sure to connect the C 8m hose to the indoor unit andthe Use the K
158. ille toward you with one hand and push down on the hooks with Upper hook the fingers of your other hand 3 locations When there is no work space because the unit is close to ceiling N CAUTION Be sure to wear protection gloves Place both hands under the center of the front grille and while pushing up pull it toward you e Installation method 1 Install the front grille and firmly engage the upper hooks 3 locations 2 Install 2screws of the front grille 3 Install the air filter and then mount the front panel Installation Operation Manual 56 Installation Manual SiBE12 908_A Preparation before Installation 3 How to set the different addresses When 2 indoor units are installed in 1 room the 2 wireless remote controllers can be set for different addresses 1 Remove the metal plate electrical wiring cover Refer to the Removal attachment methods of metal plate electrical wiring covers 2 Cut the address jumper JA on the printed circuit board 3 Cut the address jumper J4 in the remote controller EXIST 1 CUT 2 4 When connecting to an HA system Wired remote controller central remote controller etc 1 Remove the metal plate electrical wiring cover Refer to the Removal attachment methods of metal plate electrical wiring covers 2 Attach the connection cord to the S21 connector and pull the harness out through the notch
159. in Functions 1 4 Program Dry Function Outline Program dry operation removes humidity while preventing the room temperature from lowering Since the microcomputer controls both the temperature and airflow rate the temperature adjustment and fan adjustment buttons are inoperable in this mode Detail The microcomputer automatically sets the temperature and airflow rate The difference between the room thermistor temperature at start up and the target temperature is divided into two zones Then the unit operates in the dry mode with an appropriate capacity for each zone to maintain the temperature and humidity at a comfortable level Room thermistor Target temperature Thermostat OFF point Thermostat ON point temperature at start up X Y Z X 0 5 C 24 C or more or Y 0 5 C zone B Room thermistor continues for 10 min temperature at start up X 0 5 or Y 0 5 C zone B continues for 10 min X 0 5 C 17 5 C or Y 0 5 C zone B continues for 10 min Zone C Thermostat ON 0 5 C Zone A Thermostat OFF R11581 Function and Control 18 Main Functions SiBE12 908_A 1 5 Airflow Direction Control Power Airflow Dual Flaps Wide Angle Louvers Auto Swing 3 D Airflow COMFORT AIRFLOW 19 The large flaps send a large volume of air downwards to the floor The flap provides an optimum control area in cooling heating and dry mode Heating Mode During heating mode the large fla
160. indoor unit Pull them through the front side Bend the ends of tie wires upward for easier work in advance If the inter unit wiring ends are to be stripped first bundle wire ends with adhesive tape 3 Press the bottom frame of the indoor unit with both hands to set it on the mounting plate hooks Make sure the wires do not catch on the edge of the indoor unit Hang indoor unit s hook here A Mounting plate When stripping the ends of inter unit wiring in advance bind right ends of wires with insulating tape Inter unit wiring 4 Humidifying hose installation work N CAUTION e Be sure to use humidifying hose sold as optional accessory KPMH996A10S 10m set KPMH996A15S 15m set 1 The length of the humidifying hose needs to be set to ensure humidifying capacity Cut off any excess hose Use the remote controller to set the hose length Refer to page 13 e Attach a cover to the end of each humidifying hose so that no moisture or foreign substance will go into the hose when leaving the hose without being connected to the outdoor and indoor units When laying the humidifying hose inside the wall block the ends of the humidifying hose with tape or the like to prevent water or anything else from entering it until it is connected to the indoor unit and outdoor unit ducts Do not bend the humidifying hose more than 90 Use caution not to deform the cuff while installing the humidifying hose 4 1 Con
161. intertime during which the air is dry When the humidity of the room is high the user will feel warm enough even if the set temperature is dropped E To start HUMID HEAT operation 1 Press MODE selector button and select a Heat mode WDAIKIN Select oa ind FAN gert 2 3 SC v AUTO DRY COOL HEAT FAN 1 00 xw G POWERFUL COMFORT SWING ee 2 29 Ca QUIET SENSOR WEEKLY _ lt gt COPY A NEXT OFF BE ER ua W M e H yg je nN is displayed on the LCD The multi monitor lamp will be red Press HUMIDIFY VENTILATE button and select a Humidity settings The multi monitor lamp will be orange N Each press of the button advances the humidity settings in sequence dia e Humidity settings Multi monitor lamp Orange 1Yellow Standard HUMID HEAT operation gt OFF Refer to FRESH AIR SUPPLY Hedi Yellow VENTILATION page 14 FRESH AIR SUPPLY VENTILATION gt OFF 1 When the unit cannot operate HUMID HEAT operation or FRESH AIR SUPPLY VENTILATION and go into a standby state the multi monitor lamp will be yellow page 13 E To cancel HUMID HEAT operation 3 Press HUMIDIFY VENTILATE button and select a OFF The multi monitor lamp will be red Return to HEAT operation B Notes on HUMID HEAT operation e The HUMID HEAT operation function is selectable only when the air conditioner
162. ion Detail SiBE12 908_A Judgment by Input Current When an output frequency is exceeds 51 Hz 40 class or 48 Hz 50 class and the input current is less than specified value the adjustment is made for refrigerant shortage Judgment by Discharge Pipe Temperature When discharge pipe temperature is higher than certain value and the electronic expansion value opening is 450 pulse max the adjustment is made for refrigerant shortage 3 13 4 Preventing Indoor Freezing During cooling if the heat exchanger temperature in the operation stopped room becomes below the specified temperature for the specified time open the electronic expansion valve in the operation stopped room as specified and carry out the fully closed operation After this if freezing abnormality occurs more than specified time the system shall be down as the system abnormality 3 14 Additional Function 3 14 1 POWERFUL Operation Mode Compressor operating frequency and outdoor unit airflow rate are increased 3 14 2 Voltage Detection Function 53 Power supply voltage is detected each time equipment operation starts Function and Control SiBE12 908_A Part 5 Installation Operation Te InstallatiOh Manta ias eg 55 Lal Indo MINING acta iii 55 1 2 QUID UNIS si acto tu dL 67 MESI ES iere iria 79 3 Operation UE EE 80 31 Names el e CN 80 3 2 AUTO DRY COOL HEAT FAN Operation aannnnnannnnneannnonennnnnnennne 82 3 3 Adjusting the Airflow
163. ion Low Voltage Protection Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Service Diagnosis gt yo IL Detect an abnormal increase or drop of voltage by the over voltage detection circuit or DC voltage detection circuit B When an over voltage signal is sent to the microcomputer from the over voltage detection circuit or the voltage detected by DC voltage detection circuit is less than 150 V and that voltage continues for about 0 1 second The unit shuts down if the fault conditions occurs repeatedly Fault counter is reset when the unit continuously runs for 11 minutes without fault Abnormal supply voltage momentary power failure Defective over voltage detector or defective DC voltage detection circuit Failure in PAM controlled parts Short circuit inside the fan motor winding Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check the supply voltage NO RE as Correct the power supply YES Rotate fan by hand Does fan rotate NO Replace fan motor and smoothly outdoor unit PCB YES Precaution before turning on the power again Make sure the power has been off for at least 30 seconds YES Disturbance factors Noise Power supply distortion Check for such factors for a long term Try to get restarted a NO couple of times
164. ion of parts and accessories can result in water or refrigerant leakage electrical shock fire or explosion e Read the User s Manual carefully before using this product The User s Manual provides important safety instructions and warnings Be sure to follow these instructions and warnings If you have any enquiries please contact your local importer distributor and or retailer Cautions on product corrosion 1 Air conditioners should not be installed in areas where corrosive gases such as acid gas or alkaline gas are produced 2 If the outdoor unit is to be installed close to the sea shore direct exposure to the sea breeze should be avoided If you need to install the outdoor unit close to the sea shore contact your local distributor JMI 0107 eSpecifications designs and other content appearing in this brochure are current as of January 2011 but subject to change without notice ISO 9001 Organization DAIKIN INDUSTRIES LTD AIR CONDITIONING MANUFACTURING DIVISION Scope of Registration THE DESIGN DEVELOPMENT AND MANUFACTURE OF COMMERCIAL AIR CONDITIONING HEATING COOLING REFRIGERATING EQUIPMENT COMMERCIAL HEATING EQUIPMENT RESIDENTIAL AIR CONDITIONING EQUIPMENT HEAT RECLAIM VENTILATION AIR CLEANING EQUIPMENT MARINE TYPE CONTAINER REFRIGERATION UNITS COMPRESSORS AND VALVES ISO 9001 JQA 1452 Organization DAIKIN INDUSTRIES THAILAND LTD Scope of Registration THE DESIGN DEVELOP
165. ions with 1 through 5 above IL ass oas erg UNS 3 4 4 3 Minute Standby Prohibit to turn ON the compressor for 3 minutes after turning it off Except when defrosting 43 Function and Control SiBE12 908_A Control Specification 3 4 5 Compressor Protection Function When turning the compressor from OFF to ON the upper limit of frequency is set as follows The function is not used when defrosting Hz Frequency C B A sec T LD pae E ple EA m Um seconds 3 5 Discharge Pipe Temperature Control Outline The discharge pipe temperature is used as the internal temperature of the compressor If the discharge pipe temperature rises above a certain level the upper limit of frequency is set to keep this temperature from going up further Detail Stop zone Drooping EN zone Reset zone R14062 When the temperature reaches the stop zone the compressor stops The timer starts and the frequency is drooping The upper limit of frequency is kept The upper limit of frequency is canceled Function and Control 44 Control Specification SiBE12 908_A 3 6 Input Current Control Outline Detect an input current by the CT during the compressor is running and set the frequency upper limit from such input current In case of heat pump model this control is the upper limit control function of the frequency which takes priority of the lower limit of four way valve activating compensa
166. is condition is identified as an abnormal heater temperature fault When power is supplied and the thermistor input is 4 92 V or more or 0 06 V or less If the humidifying fan outlet temperature is more than 90 C this condition is identified as abnormal heater temperature fault Short circuit and wire breakage of humidifying thermistor Disconnected connector Heater has a high power Thermistor temperature detection error Defective rotor motor Defective hygroscopic fan motor Defective heater control part Defective humidifying fan Service Diagnosis SiBE12 908_A Troubleshooting Check No 02 Refer to P 169 Check No 05 Refer to P 170 Service Diagnosis At normal temperature YES 44 60 10 Troubleshooting Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check connector for proper connection NO YES Check No 02 Thermistor resistance check NO YES Is the heater cooled NO well after the power supply turned off Cool it down Measure resistance between heater connectors NO Is the heater resistance appropriate Check No 02 Is the resistance of humidification thermistor within normal range NO YES Turn on the power supply again and run the unit in HUMID HEAT test operation mode NO Does the humidifying rotor motor run YES Does the air blow NO out from the
167. is in HEAT operation The operation sound of the air conditioner will rise by slightly while the air conditioner is in humidifying or ventilating operation While the indoor unit in one room out of two is in HUMID HEAT operation the indoor unit in the other room will go into humidification stand by mode regardless of the selection of the HUMID HEAT operation function for the other room When the indoor unit in HUMID HEAT operation attains the target humidity the indoor unit in humidification stand by mode in the other room will start HUMID HEAT operation The ability of the unit to humidify drops when the outdoor temperature and humidity are low or when the set airflow rate is low The operation noise is higher than in normal HEAT The outdoor noise or odor may be captured because the outdoor air is heated with the heater and resultant moisture is taken into the room for humidification The top of the outdoor unit may get warm during operation but this is not a malfunction The operation noise may change depending on the outdoor temperature and humidity Water supply is not necessary because moisture from the outdoor air is taken into the room Installation Operation Manual 86 Operation Manual NOTE Bi Notes on HUMID HEAT operation at multi system e When the indoor units in both 2 rooms are set to HUMID HEAT operation FRESH AIR SUPPLY VENTILATION the indoor unit in either 1 of the room operate HUMID HEAT operation F
168. it PCB YES Turn off the power supply replace the harnesses and restart the compressor after turning on the power supply again Does the compressor fem stop without running Replace the compressor NO Does the unit shut several times YES down after NO repeating stop of Check the Re e compressor expansion valve Replace the electronic expansion valve Replace the compressor R14120 134 Troubleshooting SiBE12 908_A 2 19 DC Fan Lock i I gt C Remote Controller Display Method of Identify the fan motor system fault based on fan speed detected by Hall IC during high pressure Malfunction fan motor running Detection Malfunction B When the fan motor is running the fan does not rotate for 150 seconds or more Decision B Shut down when the error repeats 16 times Conditions B Clear condition The fan continuously rotates for 11 minutes without fault Supposed BW Failure in fan motor Causes B Disconnection or improper connection of harness connector between fan motor and PCB B The fan does not rotate because it gets caught in foreign matter Troubleshooting Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check No 23 Refer to P 177 Is the connector of YES the fan motor disconnected Turn off the power supply then insert the connector NO Is there any foreign YES matter around
169. it from the installation plate AP Caution When dismounting or mounting the heat exchanger be sure to wear gloves or wrap it with cloth before proceeding to the work You may be injured by the fins 204 Indoor Unit After unfastening the lower hooks hold up the heat exchanger by its right side and lift it up Remove the heat exchanger 205 Procedure Heat exchanger ws gt UY UU d 7 ANA e Zb A Uy G Q Gr OM 77 o d E il mn Ps UE al SS m ii HDI ww CMC TTT Es SiBE12 908_A m When mounting the heat exchanger make sure that the hook right is fastened Removal Procedure SiBE12 908_A Indoor Unit 1 9 Removal of Swing Motor Procedure AN Warning Be sure to turn off all power supplies at least 10 minutes before disassembling work Step Procedure 1 Removing the swing motor for vertical blade 1 Release the 2 hooks at the bottom Lift the indoor unit by a wooden base R10323 2 Remove the screw behind the drain hose and disconnect the drain hose 3 Remove the screw at the rear and the screws on the left and right side of swing motors Swing motors R10330 Removal Procedure 206 Indoor Unit Step Procedure Detach the pivot from the interlock shaft for vertical blades by a flat screwdriver Remove the swing motor unit Detach the interlock shaft from the swing motor by a flat screw driver
170. k the four way valve Malfunctioning Functioning Check No 12 Check the refrigerant line Malfunctioning Refrigerant shortage Water mixed Functioning Stop valve defective Discharge pipe thermistor Insert the thermistor in position Replace the discharge pipe thermistor Replace the valve itself or the coil Replace the four way valve coil or the valve itself Replace the outdoor unit PCB Refer to the refrigerant line check procedure Replace the outdoor unit PCB R9438 Service Diagnosis SiBE12 908_A Troubleshooting 2 18 Compressor Lock Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Check No 14 Refer to P 173 Service Diagnosis I ep On e WI Bi Judging from current waveform generated when high frequency voltage is applied to the compressor B The system is shut down when the fault count reaches 16 times B Clear condition Continuous operation for 11 minutes without fault B Compressor lock B Disconnection of compressor harness Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Turn off the power supply and disconnect U V and W harnesses Check No 14 Check the inverter by the inverter checker Inverter checker Part No 1225477 Rectify the power supply or replace the outdoor un
171. l down the electricals the started outdoor unit fan gets started when the radiation fin temperature rises Check No 03 above 75 C even when the air conditioning is not operated and Refer to P 170 stops itself when it drops below 70 C Check No 05 D YES YES oes the fault l 2 Refer to P 170 appear again Has PCB been replaced Check if the silicon grease applied properly on the radiation fin If not apply it NO NO Silicon grease Check No 02 Part No 1172698 Thermistor resistance check Fin thermistor Check the radiation fin temperature Does the thermistor NO meet the specification chart of thermistor Replace the fin thermistor YES Does the temperature exceed the temperature to stop operation NO Check the power transistor and fin for looseness If they are found to be fit tightly replace the PCB or the power YES transistor Check No 05 Outdoor fan system check NO Replace the fan motor Hectify the connector and the fan motor lead wire YE Heplace the outdoor unit S PCB Too dirty Radiation fin dirty Clean up the radiation fin Slightly dirty Check No 03 Installation condition check d Note Refer to Application of silicon grease to a power transistor and a diode bridge on P 259 R9448 151 Service Diagnosis SiBE12 908_A Troubleshooting 2 30 Output Overcurrent Remote Controller Display Method of Malfunction Detection Malfunc
172. le heating page 16 4 ae Bier 1 2 The sensors will detect the movement of people in the sensing areas and the louvers will adjust the airflow INTELLIGENT EYE direction to an area where people are not present When there are no people in the sensing areas the air conditioner will go into energy saving mode page 16 The air conditioner will be in COMFORT AIRFLOW operation combined with INTELLIGENT EYE operation page 16 sa nonn COMFORT AIRFLOW and INTELLIGENT EYE NOTE Bi Notes on COMFORT AIRFLOW operation e The flap position will change preventing air from blowing directly on the occupants of the room e POWERFUL operation and COMFORT AIRFLOW operation cannot be used at the same time e The volume of air will be set to AUTO If the upward and downward airflow direction is selected the COMFORT AIRFLOW function will be canceled e Priority is given to the function of whichever button is pressed last e The COMFORT AIRFLOW function makes the following airflow direction adjustments The flaps will move upward while cooling so that the airflow will be directed upward The flaps will move downward while heating so that the airflow will be directed downward e COMFORT AIRFLOW operation cannot be selected while FAN operation Cooling operation Heating operation 89 Installation Operation Manual SiBE12 908_A COMFORT AIRFLOW and INTELLI
173. letely at a well ventilated place first If there is a gas remaining inside the compressor the refrigerant gas or refrigerating machine oil discharges when the pipe is disconnected and it may cause injury If the refrigerant gas leaks during the repair work ventilate the area The refrigerant gas may generate toxic gases when it contacts flames The step up capacitor supplies high voltage electricity to the electrical components of the outdoor unit Be sure to discharge the capacitor completely before conducting repair work A charged capacitor may cause an electrical shock Do not start or stop the air conditioner operation by plugging or unplugging the power cable plug Plugging or unplugging the power cable plug to operate the equipment may cause an electrical shock or fire vi Introduction vil SiBE12 908 A Be sure to wear a safety helmet gloves and a safety belt when working at a high place more than 2 m Insufficient safety measures may cause a fall accident In case of R 410A refrigerant models be sure to use pipes flare nuts and tools for the exclusive use of the R 410A refrigerant The use of materials for R 22 refrigerant models may cause a serious accident such as a damage of refrigerant cycle as well as an equipment failure Do not repair the electrical components with wet hands Working on the equipment with wet hands may cause an electrical shock Do not clean the air conditioner by splashing water
174. m swallowing it If a child swallows the coin battery see a doctor immediately Installation of a leakage breaker is necessary in some cases depending on the conditions of the installation site to prevent electrical shocks Do not install the equipment in a place where there is a possibility of combustible gas leaks If the combustible gas leaks and remains around the unit it may cause a fire Check to see if the parts and wires are mounted and connected properly and if the connections at the soldered or crimped terminals are secure Improper installation and connections may cause excessive heat generation fire or an electrical shock If the installation platform or frame has corroded replace it Corroded installation platform or frame may cause the unit to fall resulting in injury Check the grounding and repair it if the equipment is not properly grounded Improper grounding may cause an electrical shock SiBE12 908_A Introduction Be sure to measure the insulation resistance after the repair and make sure that the resistance is 1 MQ or higher Faulty insulation may cause an electrical shock Be sure to check the drainage of the indoor unit after the repair Faulty drainage may cause the water to enter the room and wet the furniture and floor Do not tilt the unit when removing it The water inside the unit may spill and wet the furniture and floor Be sure to install the packing and seal on the installation frame pro
175. maged Replace the varistor NO Check the fuse on the outdoor unit PCB NO Does it have continuity Replace the fuse YES Check the thermal fuse on the terminal board NO Check the terminal board connecting wire for proper connection Does it have continuity YES Check and on the YES Firmly connected Replace the thermal fuse on the terminal board NO Reconnect properly Replace the terminal board on the terminal board Wait more than 10 sec outdoor unit PCB NO Replace the outdoor unit PCB YES 1 Continued to the next page R9452 158 Troubleshooting 159 Check No 08 Refer to P 171 SiBE12 908_A Continued from the previous 1 page NO Does LED A turn off Check grounding YES NO Grounded Carry out grounding work The cause seems to be an YES external factor other than Check No 08 failure of the outdoor unit Power supply waveform check PCB Investigate source of noise and take measures YES Disturbance Investigate the cause of disturbance and take remedial action NO Turn off the power supply Disconnect No 3 terminal and turn on the power supply again Does LED A flashing more than 10 times NO Replace outdoor unit PCB YES Check relay wire between indoor Check wrong wiring insulation among wiring insulation to ground unit and outdoor unit NO Reconnect relay wire
176. mode Forced operating mode Forced cooling for Pump Down Operation Normal operating mode Cooling Heating Defrosting Stop mode except for cooling heating modes by indoor command Preheat operation During C capacitor is discharging Stop R2829 Unless specified otherwise an indoor dry operation command must be regarded as cooling operation In this multi system when both 2 indoor units are operating one of them may enter the standby mode by the following conditions The units in the 2 rooms are different in operation mode The indoor units in both 2 rooms are set to HUMID HEAT operation or FRESH AIR SUPPLY VENTILATION Refer to the following pages for detail Note for multi on page 100 HUMID HEAT operation on page 86 FRESH AIR SUPPLY VENTILATION on page 88 Function and Control SiBE12 908_A Control Specification 3 2 Automatic switching for HUMID HEAT operation room Outline When the indoor units in both 2 rooms are set to HUMID HEAT operation priority is given to the indoor unit starting operation first basically However priority is given to the indoor unit starting operation subsequently under certain conditions Detail 1 When the indoor units in both 2 rooms are set to HUMID HEAT operation priority is given to the indoor unit starting operation first Unit 1 and the indoor unit goes into humidifying operation while the indoor unit starting operation subsequently Unit 2 goes into
177. monics in order to prevent malfunctioning of the earth leakage breaker itself 4 Use an all pole disconnection type breaker with at least 3mm between the contact point gaps Outdoor unit Do not turn ON the safety breaker until all work is completed 1 Strip the insulation from the wire 20mm 2 Connect the connection wires between the indoor and outdoor units so that the terminal numbers match Tighten the terminal screws securely We recommend a flathead screwdriver be used to tighten the screws The screws are packed with the terminal board N CAUTION as 1 In case using stranded wires is unavoidable for some reason make sure to install the round crimp style terminals on the tip terminal Place the round crimp style terminals on the wires up to the STAN covered part and secure in place e 9S Stranded wire Ana esla Indoor unit Earth leakage 50Hz circuit breaker 220 240V If the length of a connection wire is 10m or more use 2 0mm wire Round crimp style 2 When connecting the connection wires to the terminal board using a single core wire be sure to perform curling Problems with the work may cause heat and fires OK NG ROOM B Power supply CII l qe TA Wire retainer Firmly secure wire retainer Use the j so wire terminations will not specified wire 2 receive external stress type and E p Als
178. n Operation Manual SiBE12 908_A Operation Manual 3 3 Adjusting the Airflow Direction Adjusting the Airflow Direction You can adjust the airflow direction to increase your comfort Y DAIKIN Adjusting the upper and lower airflow direction B To adjust the flaps horizontal blades 1 Press SWING E button G is displayed on the LCD and the flaps will begin to swing e omg 2 When the flaps have reached the desired position press HUM Bl SWING G3 button once more o7 a i The flaps will stop moving NEN 1 2 e G disappears from the LCD POWERFUL COMFORT SWING veo Leier Las 3 4 QUIET SENSOR WEEKLY COPY NEXT Adjusting the right and left airflow direction v CON B To adjust the louvers vertical blades 3 Press SWING ZN button o ZNN is displayed on the LCD 4 When the louvers have reached the desired position press the SWING 45 button once more The louvers will stop moving CAINS disappears from the LCD Installation Operation Manual 84 Operation Manual 85 Adjusting the 3 D airflow direction B To start 3 D airflow SiBE12 908 A 1 3 Press the SWING C3 button and the SWING 215 button the cs and ZN display will light up and the flap and louvers will move in turn B To cancel 3 D airflow 2 4 Press either the SWING C3 button or the SWING 25
179. n Photocatalytic Deodorizing Filter DS TN T E Air Purifying Filter with Photocatalytic Operation Limit for Heating CWB 15 15 5 Deodorizing Function a Titanium Apatite Photocatalytic eee NM Air P ritying Filter EN SundyEecWdySaig Air Fiter Preftey o Swing Compressor o WasabeGdie Rotary Compressor Moia Proof Operation ReudaeDCMog o Heating Dry Operation A Sie a en gt gt O 2 o gt gt lt gt lt 2 2 Al Al Vertical Auto Swing Up and Down Ce 4 24 Hour ON OFF Timer DES Horizontal Auto Swing Right and Left gt 7 Night Set Mode o 3 D Airflow Worry Free Auto Restart after Power Failure WES Reliability amp Durability Self Diagnosis Digital LED Display Comfort Airflow Mode Comfort Auto Fan Speed Wiring Error Check Control LS F E E Indoor Unit Quiet Operation ea ee ee E SEH EN Night Quiet Mode Automatic E Flexibility Multi Split Split Type Compatible o HIP CIO Compatible Indoor Uni Zeie Voltage Correspondence igh Celing Application Quick Warming Funci n o Horsen Function 1 Either Side Drain fightorLef AutomaticDetrosing O PowerSelesion Operation Remote 5 Rooms Centralized Controller TR Remote Control Adaptor Humidifying Operation o Normal Open Pulse Contact Option WER Remote Control Adaptor Program Dry Function NEO Normal Open Contact
180. n be done by LED indication on the outdoor unit PCB 1 The outdoor unit has a green LED LED A on the PCB Refer to page 11 The flashing green LED indicates in order condition The turned ON or OFF LED indicates the failure related to the microcomputer B PCB is set upside down with backside up m LED A can be visually inspected through a inspection slit 103 Service Diagnosis SiBE12 908_A Service Check Function 1 3 Failure Diagnosis by Remote Controller Check Method 1 1 When the timer cancel button is held down for 5 seconds ti temperature display section indication flashes on the P DAIKIN ON OFF d i NSECON G POWERFUL COMFORT ala SENSOR Lo SWING Open the front cover TIMER CANCEL button lt ARC452A5 gt R9418 2 Press the timer cancel button repeatedly until a continuous beep is produced B The code indication changes in the sequence shown below and notifies with a long beep d Note 1 A short beep and two consecutive beeps indicate non corresponding codes 2 To cancel the code display hold the timer cancel button down for 5 seconds The code display also cancels itself if the button is not pressed for 1 minute Service Diagnosis 104 Service Check Function SiBE12 908_A Check Method 2 1 Press the 3 buttons TEMPA TEMP MODE simultaneously to enter the diagnosis mode CL JC JC R8381 5r i
181. n the remote controller 94 Operation Manual SiBE12 908_A 3 10 WEEKLY TIMER Operation WEEKLY TIMER Operation Up to 4 timer settings can be saved for each day of the week It is convenient if the WEEKLY TIMER is set according to the family s life style B Using in these cases of WEEKLY TIMER An example of WEEKLY TIMER settings is shown below Example The same timer settings are made for the week from Monday through Friday while different timer settings are made for the weekend Monday Make timer settings up to programs 1 4 page 22 Program 1 Program 2 Program 3 Program 4 ON OFF OFF oou REES pp 6 00 8 30 Tuesday Use the copy mode to make settings for Tuesday to Friday because these settings are the same to as those for Monday page 24 Friday Program 1 Program 2 Program 3 Program 4 ON OFF OFF Saturday Sunday Make timer settings up to programs 1 4 page 22 Program 1 Program 2 Program 3 Program 4 ON Up to 4 reservations per day and 28 reservations per week can be set in the WEEKLY TIMER The effective use of the copy mode ensures ease of making reservations e The use of ON ON ON ON settings for example makes it possible to schedule operating mode and set temperature changes Furthermore by using OFF OFF OFF OFF settings only the turn OFF time of each day can be set This will turn OFF the air conditioner automatically if the user forgets to turn it OFF 95 Inst
182. nal diameter 13mm Installation Operation Manual 64 Installation Manual SiBE12 908_A Setting the Humidifying Hose Length N CAUTION If the humidifying hose length is not set or it is set incorrectly the humidifying capacity may diminish or strange sound may occur from humidifying hose 1 Setting the humidifying hose length J DAIKIN B m POWERFUL COMFORT SWING QUIET SENSOR 2 E C um ei EY A TEMP button B MODE selector button C CANCEL button Set the humidifying hose length to ensure humidifying capacity Use the remote controller to set the humidifying hose length When doing this power on the unit as communication is established between the unit and the remote controller Be sure to direct the remote controller toward the indoor unit while setting the humidifying hose length The humidifying hose length includes the rear of the indoor unit e Set the humidifying hose length according the following procedure after check the installed hose length Pipe set mode Hose length setting 1 Press MODE button and TEMP button 2 locations at the same time To cancel do not operate the button for 60 seconds The display will return to normal 2 Press TEMP AY button and select PS Pipe set mode 3 Press MODE button to activate the Pipe set mode When the unit receive signal the sound emitted Be sure to check the sound If the sound is not
183. necting to the indoor unit e Connect the cuff side of the humidifying hose to the indoor unit duct Use the humidifying hose of suitable length as shown below 10m set the 8m hose 15m set the 2m hose e When connecting the humidifying hoses of the indoor and outdoor units refer to the installation manual provided to the outdoor unit Pulling out the It is easier to connect the hose with the front grille removed humidifying hose in a LA P sideward direction Cuff Connect the cuff side of the Ss humidifying eV hose to the EE Pa indoor unit duct Humidifying hose Pulling out the Insert as far as possible so that there are no gaps humidifying hose in a downward direction Left back piping Cut the cuff at this part The protrusion of the If it is too long cut the humidifying hose and bond the separately sold cuff with adhesive for vinyl to adjust the length 61 humidifying hose from the Approx 100mm wall hole is about 100mm Installation Operation Manual SiBE12 908_A Installation Manual 5 Laying piping hoses and wiring e Connect the humidifying hose to the indoor unit duct See 4 Humidifying hose installation work for details Piping bundle diagram _ I nter unit wiring Lay the piping drain hose and humidifying hose according to the orientation of the piping coming out of Gas pipe I the unit as shown below ES Drain hose Make sure the drain
184. ng on the power 2 Pressure equalizing control Room Distribution Control 1 Gas pipe isothermal control Liquid pipe temperature control with all ports connected and all rooms being air conditioned 2 SC supercooling control Open Control Electronic expansion valve control when starting operation Electronic expansion valve control when frequency changed Electronic expansion valve control for defrosting Electronic expansion valve control for oil recovery Electronic expansion valve control when a discharge pipe temperature is abnormally high Electronic expansion valve control when the discharge pipe thermistor is disconnected Electronic expansion valve control for indoor unit freeze up protection NOU ROLbmN gt Feedback Control 1 Discharge pipe temperature control 48 Control Specification SiBE12 908_A Detail The followings are the examples of control which function in each mode by the electronic expansion valve control Operation pattern When power is turned ON O function x not function Control for abnormally high discharge Control when frequency changed pipe temperature Dew buildup prevention control for Indoor freeze prevention control indoor rotor Gas pipe isothermal control SC supercooling control Oil recovery control Liquid pipe temperature control X X Fully closed when power is turned ON Cooling 1 room operation Open control when starting Control of target
185. nitored even in automatic operation in accordance with the content of actual operation MULTI MONITOR C Multi colored A indicator lamp e g e The lamp color changes according to the operation R9426 TS ING rr Red e HUMID HEA EE Orange COMING DEE Blue eS DE eii ie es eh aceon see Green IN res cc eee ese see White e The lamp color also changes according to the optional function e FRESH AIR SUPPLY VENTILATION White Only for the first 2 seconds during operation of the air conditioner e Standby state ex mode conflict Yellow 1 13 2 WEEKLY TIMER Operation Up to 4 timer settings can be saved for each day of the week up to 28 settings in total Those 3 items of ON OFF temperature and time can be set Refer to WEEKLY TIMER Operation on page 95 for detail 1 13 3 Hot Start Function In order to prevent the cold air blast that normally comes when heating is started the temperature of the heat exchanger of the indoor unit is detected and either the airflow is stopped or is made very weak thereby carrying out comfortable heating of the room The cold air blast is also prevented using a similar control when the defrosting operation is started or when the thermostat gets turned ON 1 13 4 Signal Receiving Sign When the indoor unit receives a signal from the remote controller the unit emits a signal receiving sound 33 Function and Control SiBE12 908_A Main Functi
186. nobody is in the room and operates the unit in temperature shifted 2 C from the set temperature Cooling Dry 2 C higher Heating 2 C lower and AUTO according to the operation mode at that time 1 In case of FAN mode the fan speed reduces by 60 rpm 3 Airflow direction in 2 AREA INTELLIGENT EYE operation B Detection method The opposite area of detected area is set as the target direction e Es yw Left ASN Right Vd Wi N N N N N so Area A Area B R3853 Detection signal ON in both area A and B Shift the airflow direction to area B left side Detection signal ON in area A Shift the airflow direction to area B left side Detection signal ON in area B Shift the airflow direction to area A right side Detection signal OFF in both area A and B No change pesos When the detection signal OFF in both area A and B the unit starts energy saving operation Others B The dry operation can not command the setting temperature with a remote controller but internally the set temperature is shifted by 1 C 29 Function and Control SiBE12 908_A Main Functions 1 10 Inverter POWERFUL Operation Outline Details of the Control Function and Control In order to exploit the cooling and heating capacity to full extent operate the air conditioner by increasing the indoor fan rotating speed and the compressor frequency When POWERFUL button is pushed in each operation mode the fan speed and set temperat
187. not start unless the HUMID HEAT operation of the indoor unit in the first selected room stops 3 When the indoor unit in the first selected room is in FRESH AIR SUPPLY VENTILATION and the indoor unit in the second selected room is in HUMID HEAT operation 1 When the ventilation of the first selected room stops the humidifying operation of the second selected room will start The humidifying operation of the second selected room will not start unless the ventilation of the first selected room stops 4 When the indoor units in both 2 rooms are set to FRESH AIR SUPPLY VENTILATION 1 Priority will be given to the indoor unit in the first selected room and the indoor unit in the second selected room will be in a ventilation standby state At that time no automatic switching explained in 1 will be possible The ventilation of the second selected room will start after the ventilation of the first selected room stops 3P232703 1 Installation Operation Manual 100 101 SiBE12 908_A Part 6 Service Diagnosis T Service GRHeck FONCION eege gebeten 103 1 1 Failure Diagnosis with Multi Colored Indicator Lamp 103 1 2 Failure Diagnosis by LED Indication eesssssssssse 103 1 3 Failure Diagnosis by Remote Controller 104 2 JT TOUDIGSIQOHDQ speed rae eaae ee ael a de aua ev dta uit 107 2 1 Error Code Indication by Remote Controller 107 2
188. nx35 3 Humidifying hose length 4 0m Airflow rate of indoor unit H tap 5 Specifications SiBE12 908_A Specifications 1 2 Outdoor Units 50Hz 220 230 240V Model 2MXU40GV1B E 70 Bree Power Consumption W RU Running Curent Hermetically Sealed Swing Type Compressor Model 1YC23ABXD FVCSOR 08 RATOA 120 36 33 L 30 ST 127 cfm 1 165 1 059 Propeller 50 SomdPowr Jl E Piping Connection b 9 5x2 o Both Liquid amp Gas Pipes 3 for Power Supply 4 for Interunit Wiring Max Interunit Piping Length 30 for Total of Each Room 15 for One Room Min Interunit Piping Length 3 for One Room Amount of Additional Charge 20 20m or more Mas Installation Height Eens 15 between Indoor Unit and Outdoor Unit 7 5 between Indoor Units 3D063328A Note 1 The data are based on the conditions shown in the table below Piping Length kcal h kWx860 Btu h kWx3412 cfm m minx35 3 Indoor 27 CDB 19 CWB Indoor 20 CDB 5 Outdoor 35 CDB Outdoor 7 CDB 6 CWB A 2 x In humidifying operation the operation sound increases by about 3dB in the outdoor unit Specifications 6 Specifications SiBE12 908_A 50Hz 220 230 240V 2MXU50GV1B ig eg Gaay i i w S Power Consumption wo UR Running Current A Hermetically Sealed Swing Type Compressor Model 2YC36BXD 1 100 UNUM DS 0 65
189. o STEP 9 if blank is selected 5 Press NEXT button e The ON OFF TIMER mode will be set 6 Press SELECT button to select the desired time The time can be set between 0 00 and 23 50 in 10 minute intervals To return to the ON OFF TIMER mode setting press BACK button e Go to STEP 9 when setting the OFF TIMER T Press NEXT button e The time will be set e ONE and the time blink and the temperature blink 96 Operation Manual SiBE12 908_A 8 Press SELECT button to select the desired temperature The temperature can be set between 10 C and 32 C I DAIKIN Cooling The unit operates at 18 C even if it is set at 10 to 17 C Heating The unit operates at 30 C even if it is set at 31 to 32 C e To return to the time setting press BACK button DA e The set temperature is only displayed when setting the ON TIMER 9 Press NEXT button The temperature will be set and go to the next reservation setting To continue further settings repeat the procedure from STEP 4 FAN MHON OFF e e om a 10 Press PROGRAM button to complete the setting HUM 96 TEMP C 0 gt Le Be sure to direct the remote controller toward the indoor unit and check for a receiving tone and AAA ull flashing the operation lamp MODE xx cs e is displayed on the LCD and WEEKLY TIMER operation is activated POWERFUL COMFORT SWING e The TIMER light Del as o PER QU
190. o the present time 1 Press OFF TIMER button e HO gt is displayed e blinks j Ga D es d n of the week disappears from LCD HUM TEMP l ZA M 2 Press SELECT button until the time setting reaches the CS point you like POWERFUL COMFORT SWING S A x A y a m Every pressing of either button increases or decreases the time setting by 10 minutes Ce m Holding down either button changes the setting rapidly Se SE SS 3 Press OFF TIMER button again e OFF and setting time are displayed on the LCD 1 3 e LON 2 e The TIMER lamp lights up 4 9 cy MULTI MONITOR E AA AD O Pp B To cancel the OFF TIMER operation 4 Press CANCEL button e OFF and setting time disappears from LCD e and day of the week are displayed on the LCD The TIMER lamp goes off NOTE When TIMER is set the present time is not displayed Once you set ON OFF TIMER the time setting is kept in the memory The memory is canceled when remote controller batteries are replaced When operating the unit via the ON OFF TIMER the actual length of operation may vary from the time entered by the user Maximum approx 10 minutes B NIGHT SET MODE When the OFF TIMER is set the air conditioner automatically adjusts the temperature setting 0 5 C up in COOL 2 0 C down in HEAT to prevent excessive cooling heating for your pleasant sleep 93 Installation Operation Manual SiBE12 908_A Operation Manual
191. o use the 2 screws E connect it QLS located at the bottom of securely the packing case to tighten the four locations Shape wires so that the stop valve cover fit securely Make sure the electrical wiring does not come into Be sure to clamp the wire for contact with the gas piping power source on this location Refer to the figure Make sure the wiring piping and humidifying hose from the indoor unit to the outdoor unit match OK NG E Humidifying hose Humidifying hose S Piping d YIN Outdoor Outdoor Wiring unit gt Piping Get AS Pipin N Humidifying hose Humidifying hose Make sure connecting the piping and connecting wiring fit into 222227 Incorrect handling will Liquid piping make it hard to attach the Gas piping stop valve cover causing ROOM B deformation ST Liquid piping SS SS SNS Gas piping 13 77 Installation Operation Manual SiBE12 908_A Installation Manual Test Run and Final Check Before starting the test run measure the voltage at the primary side of the safety breaker e Check that all liquid and gas stop valves are fully open e Check that piping and wiring all match 1 Test run and final check 1 To test cooling set for the lowest temperature To test heating set for the highest temperature Depending on the room temperature only heating or cooling but not both may be possible 2 After the unit is stopped it
192. of the fan motor Detection error due to faulty indoor unit PCB Service Diagnosis SiBE12 908_A Troubleshooting Check No 01 Refer to P 168 Service Diagnosis Troubleshooting Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Turn off the power supply and rotate the fan by hand Does the NO fan rotate smoothly Heplace fan motor Turn the power ON and operate the fan Turn off the power supply NO and disconnect the fan Does it rotate motor connector then turn the power ON YES Check No 01 Check the output of the fan motor connector Is the motor power voltage DC 200V generated NO Replace the indoor unit PCB YES Is the motor control power voltage DC 15V generated NO Replace the indoor unit PCB YES Turn off the power supply and disconnect the fan motor connector then turn the power ON again Check No 01 Check the output of the fan motor connector Is the rotation number command voltage DC 1 6V generated Replace the fan motor Note The motor may break when the motor connector is disconnected while remaining power supply Check No 01 Check the output of the fan motor connector Stop the fan motor y Check No 01 Check the output of the fan motor connector Is the rotation number
193. ollowing conditions is fulfilled 1 The operation ends automatically after 15 minutes 2 Press the forced cooling operation ON OFF button SW1 or S1W on the indoor unit again Others The protection functions are prior to all others in the forced cooling operation SW1 or S1W E Jon orF ON OFF button R14046 Others 256 Trial Operation SiBE12 908_A 3 Trial Operation 3 1 Trial Operation and Testing For Heat pump 1 Measure the supply voltage and make sure that it falls in the specified range 2 Trial operation should be carried out in either cooling or heating mode 3 Carry out the test operation in accordance with the Operation Manual to ensure that all functions and parts such as louver movement are working properly B The air conditioner requires a small amount of power in its standby mode If the system is not to be used for some time after installation shut off the circuit breaker to eliminate unnecessary power consumption B If the circuit breaker trips to shut off the power to the air conditioner the system backs up the operation mode The system then restarts operation with the previous mode when the circuit breaker is restored In cooling mode select the lowest programmable temperature in heating mode select the highest programmable temperature B Trial operation may be disabled in either mode depending on the room temperature B After trial operation is complete set the temperature to a norm
194. om remote controller 1 Press ON OFF button to turn on the system 2 Press TEMP button 2 locations and MODE button at the same time 3 Press TEMP Ae button and select TEST mode 4 Press MODE button 5 Trial run mode terminates in approx 30 minutes and switches into normal mode To quit a trial operation press ON OFF button 2 Test items Symptom Test items diagnostic display on RC ndoor and outdoor units are installed properly on solid bases Fall vibration noise No refrigerant gas leaks Incomplete cooling heating function je oh gas and liquid pipes and indoor drain hose extension are thermally Water leakage insulated Draining line is properly installed Water leakage System is properly earthed Electrical leakage The specified wires are used for inter unit wiring connections Inoperative or burn damage Indoor or outdoor unit s air intake or exhaust has clear path of air Stop valves are opened Incomplete cooling heating function Indoor unit properly receives remote controller commands Inoperative No strange noise from the humidifying hose Bubble sound When the bubble sound is heard water may be in the humidifying hose Do the HOSE DRY operation HOSE DRY operation for humidifying hose 1 Press TEMP button 2 locations and MODE button at the same time 2 Press TEMP Ae button and select 3 DRYING mode 3 Press MODE button to sta
195. on Manual SiBE12 908_A Refrigerant Piping Work 2 Refrigerant piping N CAUTION 1 Use the flare nut fixed to the main unit To prevent cracking of the flare nut by aged deterioration 2 To prevent gas leakage apply refrigeration oil only to the inner surface of the flare Use refrigeration oil for R 410A 3 Use torque wrenches when tightening the flare nuts to prevent damage to the flare nuts and gas leakage Align the centres of both flares and tighten the flare nuts 3 or 4 turns by hand Then tighten them fully with the torque wrenches Apply oil Tighten Do not apply refrigeration Boply roingeration pil to Torque wrench flare the inner surface of the oil to the outer surface i Flare nut Spanner Piping union Do not apply refrigeration Flare nut oil to the flare nut avoid tightening with over torque Flare nut tightening torque 25 85 42 class si dici 3 8 inch 1 2 inch 1 4 inch 32 7 39 9N e m 49 5 60 3N em 14 2 17 2N em 330 407kgf e cm 505 615kgf e cm 144 175kgf e cm 2 1 Caution on piping handling 1 Protect the open end of the pipe against dust and moisture 2 All pipe bends should be as gentle as possible Use a pipe bender for bending Be sure to place a cap If no flare cap is available cover the flare mouth with tape to keep dirt or water out 2 2 Selection of copper and heat insulation materials e When using commercial copper pipes and fittin
196. onic Expansion Valve Check 176 3 12 Rotating Pulse Input on Outdoor Unit PCB Check 177 3 13 Malin Circuit Shorn UA Cari di 179 3 14 Four Way Valve Performance Check 180 Part 7 Removal Procedure 2222222222222222222222222222222222222 TOA Table of Contents 1 2 Iateteiete a GENEE 182 LI Removal Arer ensien 182 die IRemoval Of FON TEE 185 tS Removal Or FONE GH desde aran hPa uia ru 187 1 4 Removal of Horizontal Blades and Vertical Blades 190 1 5 Removal of Electrical BOX sencmmsounan an E 194 146 Removal ON P CB amas a or tate bru e dn d ue tux tutae rene dite 197 1 7 Removal of the Connecting Duc 202 1 8 Removal of Heat Evchanger 203 1 9 4Removalor SWING WOON s iioi cette as ton eds 206 t10 Removalol Fan RO emisario 210 Outdoor ani 213 2 1 Removal of Humidifier Unit nai 213 2 2 Removal of Heater ASSY Humidifying Rotor Moisture Adsorption Element Humidifying Rotor Motor 216 2 3 Removal of Damper Motor 220 2 4 Removal of Limit Switch Humidifying Thermistor 222 Iv SiBE12 908_A 2 5 Removal of the Fan valve duct AN 225 2 6 Removal of Hygroscopic Fan Rotor Hygroscopic Fan Motor 227 2 7 Removal of Panels and Plates 0nnannannnnnennennnnnnnnnnonnennnnronesnrenesennne 228 28 THEMOVAl OREICCIICAl BOX iii 231 2 9 Weeer tata ddr 236 2 10 Removal of S
197. ons 1 13 5 ON OFF Button on Indoor Unit An ON OFF button is provided on the front panel of the unit Use this button when the remote controller is missing or if its battery has run out Every press of the button switches from ON to OFF or from OFF to ON MULTI MONITOR A E en y ON OFF button R9408 B Push this button once to start operation Push once again to stop it B This button is useful when the remote controller is missing B The operation mode refers to the following table Heat Pump AUTO AUTO B Inthe case of multi system operation there are times when the unit does not activate with this button Forced operation mode Forced operation mode can be set by pressing the ON OFF button on the indoor unit for 5 to 9 seconds while the unit is not operating See page 256 for the detail of Forced Operation Mode D Note When the ON OFF button on the indoor unit is pressed for 10 seconds or more the forced operation is stopped 1 13 6 Titanium Apatite Photocatalytic Air Purifying Filter This filter combines the Air Purifying Filter and Titanium Apatite Photocatalytic Deodorizing Filter in a single highly effective unit The filter traps microscopic particles decompose odors and even deactivates bacteria and viruses It lasts for 3 years without replacement if washed about once every 6 months 1 13 7 Air Filter Prefilter The air filter net is impregnated with a safe odorless mold preventative to make the
198. ontrol in CGoolmg 139 2 23 Compressor Sensor System Abnormality cccoocccccocccnccnncnnonacononos 141 2 24 Damper Abnormalily ooccoocccoonccncnccncninccncnncinononnnnonanonnanonanonannnnanenos 142 2 25 Position Sensor Abnormality ooccccconcnncccncnncconnconononononcnnonnncncnnncononos 143 2 26 DC Voltage DC Current Sensor Abnormality 145 2 27 Thermistor or Related Abnormality Outdoor Unit 146 2 28 Abnormal Temperature in Electrical Box 148 2 29 Temperature Rise in Radiation Em 150 2 90 OUD Ul OVerCUttell ara 152 2 91 Refrigerant Shottado E 154 2 32 Over Voltage Protection Low Voltage Protection 156 2 33 Outdoor Unit PCB Abnormality or Communication Circuit Abnormality ccccooocccccoconnnncccnonnnnononecnnonons 157 2 34 Signal Transmission Error on Outdoor Unit PCB 160 2 35 Fan Motor System Abnormality Fan LOCK eeannnnennnennnnnnnnnennnnnennnenne 162 2 36 Heater Wire Abnormality ooccconcccoccconnconcncnnncnnnncnncnnncnonanonncnnnncnnos 163 2 37 Humidifying Fan Outlet Thermistor Abnormality Heater Temperature Abnormality ooccconnccncnconnncncnnonconncnnonncnnannnnos 165 Service Diagnosis SiBE12 908_A 2 38 Lights out of Microcomputer Status Lamp 167 CEC TENET NI UU UNUM 168 3 1 Fan Motor Connector Output Check 168 3 2
199. oor unit PCB When both the indoor unit and the outdoor unit PCBs are replaced simultaneously the set value is erased Troubleshooting MN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check the preset hose length with the remote controller Has the hose length been set Set the hose length with the remote controller To other 5 5 fault diagnosis R9423 How to check the preset hose length 1 Press the 3 buttons TEMP A VW MODE simultaneously 5 is displayed A 2 Press the TEMP A or V button and select po B B 3 Press the MODE button to enter the pipe check mode C C 4 Press the TEMP A or Y button to change the display of the hose length D l D Set point long beep 5 Long beep sound means that the display shows the preset hose length If you hear the long beep when the display is E the hose length is not set E Service Diagnosis 130 Troubleshooting SiBE12 908_A 2 15 Freeze up Protection in Other Rooms Unspecified Voltage between Indoor and Outdoor Units nl i Remote LIT LI Controller Display Method of A wrong connection is detected by checking the combination of indoor and outdoor units on the Malfunction microcomputer Detection Malfunction B Operation halt due to the freeze up protection in other rooms Decision B Operation halt due to unspecified voltage between indoor and out
200. open the sound blanket outside sleeve and pull it out TARA EN Sound blanket outside sleeve R7613 2 Lift up the sound B Since the piping ports are blanket top to remove torn easily remove the TI eee blanket carefully I CS l V ap B LOS d D E j L AARANAAAAAA Q RS 1 FOR zp NOL Al Q S Ol A Sound blanket top pec Sy M 5 R9972 3 Lift up the sound B The sound blanket inside blanket inside top to top is attached only for 40 remove TS DUNS Sound TUE blanket inside top 243 Removal Procedure SiBE12 908_A Outdoor Unit Sup Procedure Pints 4 Openthe sound blanket inside sleeve and pull it out Sound blanket inside sleeve R9975 Pull out the sound blanket bottom SO i TYE UA y SS
201. ot apply refrigeration oil to the flare nut avoid tightening with over torque Flare nut tightening torque 14 2 17 2N m Flare nut for 6 4 144 175kgf e cm Valve cap tightening torque 3 8 inch 1 2 inch 1 4 inch 21 6 27 4N em 48 1 59 7N m 21 6 27 4N em 220 280kgf e cm 490 610kgf e cm 220 280kgf e cm Flare nut for 49 5 E 49 5 60 3N em Flare nut for 412 7 505 615kgf cm Service port cap 10 8 14 7N m tightening torque 110 150kgf e cm Installation Operation Manual 70 Installation Manual SiBE12 908_A Refrigerant Piping Work 4 Purging air and checking gas leakage N WARNING 1 Do not mix any substance other than the specified refrigerant R410A into the refrigeration cycle 2 When refrigerant gas leaks occur ventilate the room as soon and as much as possible 3 R410A as well as other refrigerants should always be recovered and never be released directly into the environment 4 Be sure to check for gas leaks Tse Te Nr Be sure to perform vacuum pumping for all the rooms at the same time Be sure to use the special tools for the R410A gauge manifold charge hose vacuum pump vacuum pump adapter etc Use a hexagonal wrench 4mm to operate the stop valve rod All refrigerant pipe joints should be tightened with a torque wrench at the specified tightening torque 1 Connect the charge hose protrusions the side for pushing the pin for low pressure and high
202. ote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Service Diagnosis wn L Sensor abnormality is detected by input value When the input from a temperature sensor is 4 96 V or more or 0 04 V or less B improper connector connection B Defective indoor control PCB B Defective humidity sensor PCB Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Connect the connector again for ensuring the connection Check the connector for proper connection between the indoor control PCB and display PCB Heconnect properly Replace the indoor unit PCB LL Humidity sensor R9422 126 Troubleshooting SiBE12 908_A 2 12 Signal Transmission Error Indoor Unit Outdoor Unit nd d I p Remote Controller Display Method of The data sent from the outdoor unit is checked for problem Malfunction Detection Malfunction When the data sent from the outdoor unit can not be received without error or when the disable Decision status of signal transmission continues for 15 seconds Conditions Supposed B Defective outdoor unit PCB Causes B Defective indoor unit PCB B Signal transmission error between indoor and outdoor unit due to improper wiring B Signal transmission error between indoor and outdoor unit due to breakage of relay wire transmission wire 127 Service
203. ound Banker 242 2 11 Removal of the Propeller Fan Fan Motor 245 2 12 Removal of Thermistors ooccocccocococnconcconnconnconnnononoronoroconocanocannnnnnns 248 2 13 Removal OF CompresSOl zs iet a 250 2 14 Removal of the Four Way Valve Electronic Expansion Valve 252 iR Quer ETSI TERTII Ih Pump Down OPE Miranda 255 2 Forced Cooling Operation Mode cccooccccocccccoconococnconacncnnncononannnnnos 256 Ss lal ODS LATION ir AAA AAA 257 3 1 TrialOperatlion and Testing psss alcista 257 3 2 Trial operation from Remote Controller 257 A neen ln Le EE 258 4 1 When 2 Units are Installed in 1 Hoom esses 258 4 2 Jumper SUN ao 258 5 Application of Silicon Grease to a Power Transistor and a DIOde BA ansiado iia tai 259 Part 9 ABDOnOlXisiesvunuxuava GuNR Eege MR RENE LOU UM PIDIN fl DIA QKAINS T I 261 Med ose amt 261 1227 OUTAOOR ln UE 262 2 ele Le ele EN 263 2 1 indOOL WINS E 263 22 SOUIGDOD WINS tds 264 V Table of Contents SiBE12 908_A Introduction 1 Introduction 1 1 Safety Cautions Cautions and B Be sure to read the following safety cautions before conducting repair work Warnings m The caution items are classified into Warning and N Caution The N Warning items are especially important since they can lead to death or serious injury if they are not followed closely The N Caution
204. ow 3 LED 1 Multi color R10621 T o led the control 7 Removing the control PCB Unfasten the 2 lower hooks of the control PCB Control qt O PCB al o Off Removal Procedure 200 Indoor Unit Lift up the bottom of the control PCB and pull it out The figures show the names of the PCB component parts 201 Procedure NA Io ER XA CN CG 3 Oe 9 GT A eS T 9 DD O pc O QO O S41 S46 ene Les Yellow om Green LED1 multi color R10620 SiBE12 908 A m When mounting the control PCB make sure that it is fixed by 2 upper hooks B Lead free solder PbF is used for the PCB When replacing the PCB use the specific solder and soldering iron S1 To DC fan motor 825 To INTELLIGENT EYE PCB S26 To control PCB S32 To heat exchanger thermistor S41 To swing motor S46 To display PCB S47 To signal receiver S48 To control PCB S49 To control PCB B See page 10 for detail Removal Procedure SiBE12 908_A 1 7 Removal of the Connecting Duct Procedure 1 Remove the connecting duct for humidifying hose 1 Detach the humidifying hose from the duct unit 2 Remove the fixing screw for the duct unit 3 Lift the right side to undo the projection and slide to the left Removal Procedure Procedure P TY y A le NN 5 AN F aw A as S4 g MES Pa S INN NS Y H
205. p enables direct warm air straight downwards The flap presses the warm air above the floor to reach the entire room Cooling Dry Mode During cooling or dry mode the flap retracts into the indoor unit Then cool air can be blown far and pervaded all over the room The louvers made of elastic synthetic resin provide a wide range of airflow that guarantees a comfortable air distribution The following table explains the auto swing process for heating cooling dry and fan Vertical um up and down Horizontal Swing right and left Cooling Dry e automatic R8315 B Alternative repetition of vertical and horizontal swing motions enables uniform air conditioning of the entire room This function is effective for starting the air conditioner B When the horizontal swing and vertical swing are both set to auto mode the airflow become 3 D airflow and the horizontal swing and vertical swing motions are alternated The order of swing motion is such that it turns counterclockwise starting from the right upper point as viewed to the front side of the indoor unit 2 1 1 3 4 R13554 The vertical swing flap is controlled not to blow the air directly on the person in the room Function and Control SiBE12 908_A Main Functions 1 6 Fan Speed Control for Indoor Units Control Mode Phase control and fan speed control contains 9 steps LLL LL SL L ML M MH H and HH The airflow rate can be automatic
206. ped and is opened with fixed opening during defrosting 3 12 4 Gas Pipe Isothermal Control During Cooling When the units are operating in multiple rooms detect the gas pipe temperature and adjust the electronic expansion valve opening so that the temperature of the gas pipe in each room becomes the same value When the gas pipe temperature gt the average gas pipe temperature gt open the electronic expansion valve in that room When the gas pipe temperature lt the average gas pipe temperature close the electronic expansion valve in that room 3 12 5 SC supercooling Control Outline Detect the temperature of liquid pipe and heat exchanger of the rooms and compensate the electronic expansion valve opening so that the SC of each room becomes the target SC e When the actual SC is gt target SC open the electronic expansion valve of the room When the actual SC is target SC close the electronic expansion valve of the room Detail Start Functioning Conditions After finishing the open control 630 seconds after the beginning of the operation control all the electronic expansion valve in the operating room Determine Electronic Expansion Valve Opening Adjust the electronic expansion valve so that the temperature difference between the maximum heat exchanger temperature of connected room and the temperature of liquid pipe thermistor becomes constant 3 12 6 Starting Operation Changing Operating Room Control Control the el
207. peration 5 Fan control when the number of heating rooms decreases 6 Fan control when forced operation 7 Fan control in indoor outdoor unit quiet operation 8 Fan control during heating operation 9 Fan control in the POWERFUL mode 10 Fan control for pressure difference upkeep Fan OFF Control when Stopped B Fan OFF delay for 60 seconds must be made when the compressor is stopped Tap Control in Indoor Outdoor Unit Quiet Operation 1 When Cooling Operation When the outdoor air temperature is higher than 37 C the fan tap must be set to H When the outdoor air temperature is 18 to 37 C the fan tap must be set to M When the outdoor air temperature is lower than 18 C the fan tap must be set to L 2 When Heating Operation When the outdoor air temperature is lower than 4 C the fan tap must be set to H When the outdoor air temperature is 4 to 12 C the fan tap must be set to M When the outdoor air temperature is higher than 12 C the fan tap must be set to L 46 Control Specification SiBE12 908_A 3 10 Liquid Compression Protection Function 2 Outline Detail In order to obtain the dependability of the compressor the compressor must be stopped according to the conditions of the temperature of the outdoor air and outdoor heat exchanger B Operation stops depending on the outdoor air temperature Compressor operation turns OFF under the conditions that the system is in cooling operation and outdoor air temperature is belo
208. peration starts The power consumption of compressor during preheating operation is 35 W OFF Condition When outdoor air temperature is higher than 12 C or discharge pipe temperature is higher than 12 C inverter in open phase operation stops 3 4 2 Four Way Valve Switching Outline During the heating operation current must be conducted and during cooling and defrosting current must not be conducted In order to eliminate the switching sound as the four way valve coil switches from ON to OFF when the heating is stopped the delay switch of the four way valve must be carried out after the operation stopped Detail The OFF delay of four way valve Energize the coil for 150 seconds after unit operation is stopped 3 4 3 Four Way Valve Operation Compensation Outline At the beginning of the operation as the four way valve is switched acquire the differential pressure required for activating the four way valve by having output frequency which is more than a certain fixed frequency for a certain fixed time Detail Staring Conditions When starting compressor for heating When the operating mode changes from the previous time When starting compressor for starting defrosting or resetting When starting compressor for the first time after the reset with the power is ON When starting compressor after operation stop by the cooling heating mode change over malfunction Set the lower limit frequency to A Hz for 60 seconds with any condit
209. perature setting 4 Press TEMPERATURE adjustment button The displayed items on the LCD will change whenever either one of the buttons is pressed DRY or FAN mode COOL mode HEAT mode AUTO mode 18 32 C 10 30 C 18 30 C Press A button to raise the temperature and press W button to lower the temperature The temperature setting is not variable 82 Operation Manual SiBE12 908_A B To change the airflow rate setting 5 Press FAN setting button DRY mode AUTO or COOL or HEAT or FAN mode _ EE a Five levels of airflow rate setting from to plus A and ki are available The airflow rate setting is not variable T o e Indoor unit quiet operation When the airflow is set to amp the noise from the indoor unit will become quieter Use this when making the noise quieter Each pressing of the button advances the airflow rate setting in sequence E id Q0 Q0 es m NN e mM gt a NOTE Bi Notes on HEAT operation e Since this air conditioner heats the room by taking heat from outdoor air to indoors the heating capacity becomes smaller in lower outdoor temperatures If the heating effect is insufficient it is recommended to use another heating appliance in combination with the air conditioner The heat pump system heats the room by circulating hot air around all parts of the room After
210. perly For unitary type If the packing and seal are not installed properly water may enter the room and only 1 2 Used Icons wet the furniture and floor Icons are used to attract the attention of the reader to specific information The meaning of each icon is described in the table below Icon Type of Description Information Note A note provides information that is not indispensable but may nevertheless be valuable to the reader such as tips and tricks Note Caution A caution is used when there is danger that the reader through incorrect manipulation may damage equipment loose data get Caution an unexpected result or has to restart part of a procedure Warning A warning is used when there is danger of personal injury MN Warning Reference A reference guides the reader to other places in this binder or in this manual where he she will find additional information on a specific topic SiBE12 908_A Part 1 List of Functions IMMANE 2 List of Functions SiBE12 908_A Functions 1 Functions u u Basic Inverter with Inverter Power Control SS Health amp Air Purifvina Fil j ir Purifying Filter HONOR Operation Limit for Cooling CDB PS Sech i Operation Limit for Heating CWB Photocatalytic Deodorizing Filter D wm RECH Pamconro AAA a mer e Swing Compressor 1 DEER Rotary Compressor Wipe cisan Ft Pan o Reluctance DC Motor Washable Grile 1 Wide Angle Louvers
211. power 10 company YES Does the fuse or the YES temperature fuse blow Replace the fuse or the temperature fuse NO YES Within 3 minutes after Standby for 3 min 2 Ad ae Operation starts 3 NO min later Is the wire connection and the wire size correct NO Reconnect wires properly YES NO Is the indoor unit compatible with the outdoor unit Arrange for a correct combination Infrared ray checker Part No 999146T Make sure that the infrared ray is radiated from remote controller infrared ray checker Check the batteries in the remote controller Is there a sound indicating that a signal from the remote controller is received Does the address of the remote controller match with that of the indoor unit NO Match the address YES 1 Continued to the next page R9681 Service Diagnosis 110 Troubleshooting 111 SiBE12 908_A Continued from the previous page YES Operation lamp flashes Is an error code displayed on the remote controller YES Diagnose by an error code Go to troubleshooting Does it operate on test operation mode Replace the outdoor unit PCB Diagnose the indoor unit and the Go to LED diagnosis outdoor unit by LED investigate the symptoms R9421 Service Diagnosis SiBE12 908_A Troubleshooting 2 3 Air conditioner runs but does not cool heat Method of Malfunction
212. pressor failure or other failure control PCB power module etc The inverter checker makes it possible to judge the cause of trouble easily and securely Connect this checker as a quasi compressor instead of compressor and check the output of inverter B Operation Method Step 1 Be sure to turn the power off Step 2 Install the inverter checker instead of a compressor Note Make sure the charged voltage of the built in smoothing electrolytic capacitor drops to 10 VDC or below before carrying out the service work l 2 Connect the terminals to the 1 Remove the terminals from terminale ofthe inverter the compressor checker Inverter checker Be careful not to touch the terminals U V W each other Otherwise high voltage is applied R13940 Reference If the terminals of the compressor are not FASTON terminals difficult to remove the wire on the terminals it is possible to connect wires available on site to the outdoor unit from output side of PCB Do not connect them to the compressor at the same time otherwise it may result in incorrect detection 173 Service Diagnosis SiBE12 908_A Service Diagnosis Check Step 3 Activate inverter test operation from the indoor unit 4 2 3 kb Turn the power on Select FAN operation with the MODE button on the remote controller Press the 3 buttons TEMP A TEMP Y MODE simultaneously gt D is displayed Press the TEMP A or TEMP Y button
213. pressor operation frequency is more than 56 Hz 40 class or 40 Hz 50 class and when the input current is less than 0 25 A Input current is below 0 5 A B The unit shuts down when the fault occurs 4 times B Fault counter is reset to zero if the unit does not stop during accumulated compressor operation time of 60 minutes after restored from fault conditions B Defective outdoor unit PCB B Defective current transformer MN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Replace the outdoor unit PCB Service Diagnosis SiBE12 908_A Troubleshooting 2 27 Thermistor or Related Abnormality Outdoor Unit Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Service Diagnosis This fault is identified based on the thermistor input voltage to the microcomputer A thermistor fault is identified based on the temperature detected by each thermistor When power is supplied and the thermistor input is 4 98 V or more or when the thermistor input is 0 02 V or less for 5 seconds continuously For J3 Discharge pipe thermistor heat exchanger thermistor is taken into consideration to identify the fault For or 45 although the system of the corresponding room is shut down the outdoor unit can operate Improper connection of connector Defective thermistor Defective indoor unit PCB For 43 def
214. r connectors for the reactor Removal Procedure SiBE12 908_A Outdoor Unit Step Procedure 11 Detach the discharge pipe thermistor B Meet the edge of the thermistor and the clip B Be careful not to lose the clip for the discharge pipe thermistor Thermistor Discharge pipe amp oie Cross section R10346 12 Disconnect the connector for the thermistor ASSY S90 g S90 S90 Thermistor ASSY Outdoor air Heat exchanger Discharge pipe AA i zrrtlsi tury L 7 Di 13 Undo the wire clamp for the thermistor ASSY under the electrical box 14 Cut the clamp M Y ANE SA f Sear of UN Say PIE Removal Procedure 234 R9948 Outdoor Unit SiBE12 908_A Ste Procedure Points 15 Remove the screw on the right side of the electrical box 16 Remove the grounding screws of earth wires Earth wire 17 Remove the screw in front of the electrical box mi CN C C CA l S IS y 77 i H s R9951 18 Lift up the electrical box to remove Electrical box En B pner e AI i Q d Q SS lee PS 235 Removal Procedure SiBE12 908_A Outdoor Unit 2 9 Removal of PCB Procedure MN Warning Be sure to wait 10 minu
215. r unit PCB Too dirty Radiation fin dirty Clean up the radiation fin Slightly dirty Check No 03 Installation condition check R9447 149 Service Diagnosis SiBE12 908_A Troubleshooting 2 29 Temperature Rise in Radiation Fin Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Service Diagnosis Temperature rise in the radiation fin is identified based on the temperature of the radiation fin detected by the fin thermistor with the compressor on B The compressor stops when the radiation fin temperature is 86 C or more Fault condition is cleared when the radiation fin temperature is below 72 C Shut down when the error occurs repeatedly Clear condition Continuous operation for 60 minutes Radition fin temperature rise due to defective outdoor fan Radition fin temperature rise due to short circuit Detection error due to defective fin thermistor Detection error due to improper connection of connector Detection error due to defective outdoor unit PCB Silicon grease is not applied properly on the heat radiation fin after replacing outdoor unit PCB 150 Troubleshooting SiBE12 908_A Troubleshooting Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check No 02 Refer to P 169 Turn off the power supply and N WARNING turn it on again to get the system To coo
216. rcuit as specified YES Is the supply voltage NO within the rated voltage 10 YES Installation s there required installation space Isn t it short circuited NO YES Is the size of the NO connecting wire as specified YES Check No 29 Short circuit check NO Remove the fan motors or the four way valve coil and check YES Check No 29 Short circuit check NO YES Air is mixed in Overfilling of refrigerant is supposed 115 SiBE12 908 A Be sure to turn off power switch before connect or disconnect connector Replace the safety breaker to a specified one Increase the set value of the earth leakage current on the breaker or replace the breaker Use the exclusive circuit Replace the wire to a specified one by referring to the electric wire distance described in the installation manual Contact with an electric power company Secure the required space Replace the wire to the specified one Replace the outdoor unit PCB Replace the fan motor or the four way valve coil Conduct vacuum drying fill the refrigerant of specified volume R9432 Service Diagnosis SiBE12 908_A Troubleshooting 2 5 Air conditioner makes big noise and vibration Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Service Diagnosis Piping length is too
217. ring E Normal normal operation operation Maximum during ECONO Mode Time From start up until set temperature is reached This diagram is a representation for illustrative purposes only The maximum running current and power consumption of the air conditioner in ECONO mode vary with the connecting outdoor unit e ECONO operation can only be set when the unit is running Pressing the OFF button causes the setting to be canceled and the Y disappears from the LCD ECONO operation is a function which enables efficient operation by limiting the power consumption of the outdoor unit operating frequency e ECONO operation functions in AUTO COOL DRY and HEAT modes In case ECONO operation is selected in QUIET operation QUIET operation will be canceled e POWERFUL and ECONO operation cannot be used at the same time Priority is given to the function of whichever button is pressed last Power consumption may not drop even if ECONO operation is used of the level of power consumption is already low Installation Operation Manual 92 Operation Manual SiBE12 908_A 3 9 TIMER Operation TIMER Operation Timer functions are useful for automatically switching the air conditioner on or off at night or mtem in the morning You can also use OFF TIMER and ON TIMER in combination Voan B To use OFF TIMER operation Check that the clock is correct If not set the clock t
218. rizontal right side mount the flap blade large first to the center fixing shaft and then to the left fixing shaft Unfasten the right fixing shaft of the horizontal blade large R10295 Removal Procedure 190 Indoor Unit SiBE12 908_A Step Procedure 2 Removing the horizontal blade small 1 Remove the horizontal blade small while bending the fixed part at the center slightly N R10296 2 Unfasten the left side 3 Unfasten the key type fixing shaft at the right side R10298 Y SS j CH d 3 Removing the fan guard 1 Unfasten the hooks at the lower part of the fan guard with a flat screwdriver Fan guard R10299 191 Removal Procedure SiBE12 908_A Indoor Unit Step Procedure Remove the fan guard toward yourself R10300 I Detach the pivot from Bot the interlock shaft for TEEN vertical blades by a flat A mn ee screwdriver A a a A AA TOO Og SS TG A p e D 2 11 wWDDUUVA R10623 Hemove the interlock rod 19 x See y R10302 Unfasten the hooks at the shaft mounting part by pressing them with a flat screwdriver Se R10303 Removal Procedure 192 Indoor Unit SiBE12 908_A Step Procedwe Unfasten the hooks at B Five vertical blades are the upper 2 positions united as a set It is impossible to replace Remo
219. rmistor 2 1 Heat Pump Model Expansion valve DIVAS AX i Four way valve a i B C R14047 Compressor A Outdoor Heat 1 The outdoor heat exchanger thermistor is used for controlling target discharge pipe Exchanger temperature Thermistor The system sets a target discharge pipe temperature according to the outdoor and indoor heat exchanger temperature and controls the electronic expansion valve opening so that the target discharge pipe temperature can be obtained 2 he outdoor heat exchanger thermistor is used for detecting disconnection of the discharge pipe thermistor when cooling When the discharge pipe temperature becomes lower than the outdoor heat exchanger temperature the discharge pipe thermistor is judged as disconnected 3 he outdoor heat exchanger thermistor is used for high pressure protection during cooling operation B Discharge 1 The discharge pipe thermistor is used for controlling temperature of the discharge pipe Pipe Thermistor If the temperature of discharge pipe used in place of the inner temperature of the compressor rises abnormally the operating frequency drops or the operation halts 2 he discharge pipe thermistor is used for detecting disconnection of the discharge pipe thermistor C Gas Pipe 1 In cooling the gas pipe thermistors are used for gas pipe isothermal control Thermistor The system controls electronic expansion valve opening so that gas pipe temperature in each room becomes
220. rt circuit NO Replace outdoor unit PCB Is LED A turned off YES Is voltage of 5 V NO applied between 5V and GND Replace outdoor unit PCB YES Restart Does the LED A blink Replace outdoor unit PCB Remove noises from the power supply R9458 167 Service Diagnosis SiBE12 908_A Check 3 Check 3 1 Fan Motor Connector Output Check Check No 01 1 Check the connection of connector 2 Check motor power supply voltage output pins 4 7 3 Check motor control voltage pins 4 3 4 Check rotation command voltage output pins 4 2 5 Check rotation pulse input pins 4 1 S1 Motor power supply voltage 310 340 VDC Unused Unused GND Motor control voltage 15 VDC Rotation command voltage 1 5 VDC Rotation pulse input Ww OQ ko O N OO OU 0 00 R12404 Service Diagnosis 168 Check 3 2 Thermistor Resistance Check Check No 02 169 SiBE12 908_A Disconnect the connectors of the thermistors from the PCB and measure the resistance of each thermistor using tester The relationship between normal temperature and resistance is shown in the graph and the table below Thermistor temperature C Resistance KQ DRECHEN ECO CAN po EC a le ES R25 20 kQ B 3950 K R11905 wee v Resistance range R11906 B For the models in which the thermistor is directly mounted on the PCB disconnect the connector for the P
221. rt the HOSE DRY operation HOSE DRY operation will work about 30 minutes To cancel the HOSE DRY operation hold MODE button for more than 5 seconds 4 Activate test run for HUMID HEAT operation again check that the bubble sound is not heard from the humidifying hose 14 3P232706 1B Installation Operation Manual 66 Installation Manual SiBE12 908_A 1 2 Outdoor Units Outdoor Unit Installation Drawings 1 Precautions for humidifying hose installation work Moisture on the outdoor unit is brought to the indoor unit together with air around the outdoor unit during humidifying operation Install the outdoor unit in a clean and calm location Be sure to use the humidifying hose sold as an optional accessory KPMH996A108 10m set KPMH996A15S 15m set A CAUTION Do not connect the embedded branch piping and the outdoor unit when only carrying out piping work without connecting the indoor unit in order to add another indoor unit later Make sure no dirt or moisture gets into either side of the embedded branch piping See Precautions for Laying Refrigerant Piping on page 9 for details B Installation of humidifying hoses respectively in upward direction in ROOM A and in downward direction in ROOM B lt Front side gt a Allow 300mm of work space below the ceiling surface ROOM A E Humidifying hose lt Back side gt A A Humidifying hose ROOM B KCC e ECH dal PS HE 1 o
222. s displayed on the LCD WDAIKIN R9420 2 Select GC with the TEMPA or Y button 3 Press the MODE button to enter the service check mode The figure of the ten s place blinks WDAIKIN R9430 4 Press the TEMPA or Y button and change the figure until you hear the sound of beep or pi pi 5 Diagnose by the sound x pi The figure of the ten s place does not accord with the error code x pi pi The figure of the ten s place accords with the error code but the one s not beep The both figures of the ten s and one s place accord with the error code The figures indicated when you hear the beep sound are error code Refer to page 107 6 Press the MODE button The figure of the one s place blinks WDAIKIN R9429 105 Service Diagnosis SiBE12 908_A Service Check Function 7 Press the TEMPA or Y button and change the figure until you hear the sound of beep 8 Diagnose by the sound x pi The figure of the ten s place does not accord with the error code x pi pi The figure of the ten s place accords with the error code but the one s not beep The both figures of the ten s and one s place accord with the error code 9 Determine the error code The figures indicated when you hear the beep sound are error code Error codes and description Refer to page 107 10 Press the MODE button for 5 seconds to exit from the ser
223. short Mounting wall is too thin Insufficient vibration prevention measures Deformation of the unit Improper quantity of refrigerant MN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Installation YES Does the wall vibrate or chatter NO Does the installation YES plate vibrate or chatter NO NO Is the piping secured and fixed Unit YES YE Does the fan contact S with other parts NO YES Does the piping contact with the casing NO Is it passing sound YES heard from the pressure reducing valve Overfilling of refrigerant Air mixed in Flushing sound due to refrigerant shortage Modify installation conditions reinforce the wall install outdoor rubber cushion Change installation place Put cushion material on the installation plate Secure it by using saddles and inserting a cushion material Correct them Correct by hand or install piping weight Apply sound insulation sheets of putty Conduct vacuum drying fill the refrigerant of specified volume R9433 116 Troubleshooting SiBE12 908_A 2 6 Airis not humidified enough Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Hose length is not set Incorrect hose length setting Short circuited at outdoor unit Blocked humidification filter Insufficient
224. ssembling work Step Procedure Points 1 Removing the drip proof Preparation plate Remove the heat exchanger according to the Removal of Heat Exchanger 1 Dismount the drip proof plate right by removing the 2 screws d Drip proof plate Ds 2 Release the fan motor wire harness Removal Procedure 210 Indoor Unit SiBE12 908_A Step Procedure Pis e 3 Remove the 2 screws of the fan motor fixing plate x 4 Unfasten the hook of the fan motor fixing plate and remove Butte Fes X P SS LP 1 gt o si A R8117 7 TE Nay 9 gt ER Lo W um SM i Ip 2 Removing the fan rotor 1 Dislocate the fan rotor by sliding it to the right SCH Jd EE Fan rotor R8119 211 Removal Procedure SiBE12 908_A Indoor Unit Step Procedure 2 Remove the fan rotor B Reassembling the fan motor by loosening the lock When reassembling the fan screw Lock screw rotor provide as much as 5mm of play between the side face of the rotor and the bottom frame Side face of Fan motor Side face of rotor bottom frame R2808 3 Press the rubber made bearing with force from outside IZ R9582 1
225. standby mode 2 When the humidity of the Unit 1 reaches a target level the unit which performs HUMID HEAT operation switches from Unit 1 to Unit 2 automatically 3 When the temperature decreases in the room of the Unit 1 the Unit 2 goes into standby mode then the Unit 1 starts HUMID HEAT operation again Carry out priority room setting to prevent the room of HUMID HEAT operation from switching automatically How to carry out priority room setting Cut the jumper of the outdoor unit PCB Cut the JP9 gt Room A is set as the priority room Cut the JP10 gt Room B is set as the priority room di E D n 9 le eg i g LG PA EK E SH US Ve edd a B TS al BE d 2 z fk hes n T E em 0 ER DIS ds E o ua e e e e Ve e e a o x JP9 JP10 R9428 Function and Control 40 Control Specification SiBE12 908_A 3 3 Frequency Control Outline Frequency that corresponds to each room s capacity is determined according to the difference in the temperature of each room and the temperature that is set by the remote controller The function is explained as follows 1 Zi 3 How to determine frequency Frequency command from an indoor unit The difference between a room temperature and the temperature set by the remote controller Frequency command from an indoor unit The ranked capacity of the operating room Frequency initial setting PI control When the shift of the freq
226. sure to use an exclusive power circuit for the equipment and follow the local technical standards related to the electrical equipment the internal wiring regulations and the instruction manual for installation when conducting electrical work Insufficient power circuit capacity and improper electrical work may cause an electrical shock or fire Be sure to use the specified cable for wiring between the indoor and outdoor units Make the connections securely and route the cable properly so that there is no force pulling the cable at the connection terminals Improper connections may cause excessive heat generation or fire When wiring between the indoor and outdoor units make sure that the terminal cover does not lift off or dismount because of the cable Ifthe cover is not mounted properly the terminal connection section may cause an electrical shock excessive heat generation or fire Do not damage or modify the power cable Damaged or modified power cable may cause an electrical shock or fire Placing heavy items on the power cable and heating or pulling the power cable may damage the cable Do not mix air or gas other than the specified refrigerant R 410A R 22 in the refrigerant system If air enters the refrigerating system an excessively high pressure results causing equipment damage and injury If the refrigerant gas leaks be sure to locate the leaking point and repair it before charging the refrigerant After charging r
227. t COMFORT B The airflow rate is controlled automatically within the following steps AIRFLOW Mode Cooling L tap MH tap same as AUTOMATIC Heating ML tap MH tap B The latest command has the priority between POWERFUL and COMFORT AIRFLOW Function and Control 20 Main Functions SiBE12 908_A 1 7 HUMID HEAT Operation Operation FAN 1 Select HEAT mode E OON OFF 2 Set humidity HUM TEMPC 2 18 le 1 MODE NW Gi POWERFUL COMFORT SWING QUIET SENSOR R9409 Refer to the operation manual for details Features B The world s first new humidifying method has adopted What is new in this method is to intake vapor in the outdoor air with the hygroscopic element mounted in outdoor unit and send to indoors This has enabled powerful and speedy humidification apart from other company s methods which just absorb moisture in the indoor air by taking in outdoor moisture fully humidifying the room R9410 B The room is uniformly humidified e Humidifier heating operation by air conditioner Moisture gathers around the ceiling as it is lighter than the air even if the humidifier is operated The air on the floor is kept dry av When using humidifier moisture gathers around the ceiling R3325 21 Function and Control SiBE12 908_A d Note m Main Functions e HUMID HEAT operation by URURU This air conditioner enables uniformly humidifying the room by circulating vapor with w
228. t current value and the compressor running frequency If the refrigerant is short the input current is smaller than the normal value Refrigerant shortage detection Il Refrigerant shortage is detected by checking the discharge pipe temperature and the opening of the electronic expansion valve If the refrigerant is short the discharge pipe temperature tends to rise Refrigerant shortage detection I 40 class The following conditions continue for 7 minutes Input current x input voltage lt 2111 256 x output frequency 361 W e Output frequency gt 51 Hz 50 class The following conditions continue for 7 minutes Input current x input voltage lt 4628 256 x output frequency 608 W Output frequency gt 48 Hz Refrigerant shortage detection Il The following conditions continue for 80 seconds e Target opening of the electronic expansion valve gt 450 pulse Discharge pipe temperature gt 128 128 x target discharge pipe temperature 20 C If a refrigerant shortage error takes place 4 times successively the system is shut down The error counter resets itself if this or any other error does not occur during the following 60 minute compressor running time total time Refrigerant shortage refrigerant leakage Refrigerant heat exchanger drift Poor compression performance of compressor Closed stop valve Defective electronic expansion valve 154 Troubleshooting Troubleshooting Che
229. t with the indoor heat exchanger temperature after 2 seconds from operation start and after 30 seconds from changing number of operation room Control in Each Zone Reference Indoor heat exchanger thermistor temperature EE Reset zone 11 C 9 C Keep zone 7C Drooping zone 0C Stop zone R11915 45 Function and Control SiBE12 908_A Control Specification 3 8 Heating Peak cut Control Outline Detail During heating operation the signals being sent from the indoor unit allow the operating frequency limitation and prevent abnormal high pressure The signal from the indoor unit must be divided as follows Conditions for Start Controlling Judge the controlling start with the indoor heat exchanger temperature after 2 minutes from operation start and A seconds from changing number of operation room Control in Each Zone The maximum value of heat exchange intermediate temperature of each indoor unit controls the following excluding stopped rooms TA Wee 65 C 55 C Stop zone Drooping zone 54 C Keep zone 52 C E Up zone 509C mmmmmhmmmmmmummmmmmwm Reset zone Heat exchanger thermistor temperature R9851 3 9 Fan Control Outline Detail Function and Control Fan control is carried out according to the following conditions 1 Fan ON control for electric component cooling fan 2 Fan control when defrosting 3 Fan OFF delay when stopped 4 ON OFF control when cooling o
230. te Refer to the information on selecting operation mode 1 When the indoor units in both 2 rooms are set to HUMID HEAT operation 1 Priority will be given to the indoor unit in the first selected room and the indoor unit will go into humidifying operation while the indoor unit in the second selected room will go into a humidifying operation standby state The multi monitor indicator will be lit yellow in approx 20 seconds 2 When the humidity of the first selected room reaches a target level the indoor unit will go into a humidifying operation standby state Then the indoor unit in the other room will go into HUMID HEAT operation automatically 3 When the humidity of the first selected room drops the indoor unit of the room will return to HUMID HEAT operation At that time the indoor unit in the second selected room will go into a humidifying operation standby state e When the indoor unit in the first selected room is in CONT humidifying the indoor unit of the second selected room will not switch automatically 2 When the indoor unit in the first selected room is in HUMID HEAT operation and the indoor unit in the second selected room is in FRESH AIR SUPPLY VENTILATION 1 When the HUMID HEAT operation of the indoor unit in the first selected room stops the ventilation of the second selected room will start Even though the humidity of first selected room reaches a target level the ventilation of the second selected room will
231. temperature drops below 70 C Radiation fin temperature rise due to defective outdoor fan Radiation fin temperature rise due to short circuit Detection error due to defective fin thermistor Detection error due to improper connection of connector Detection error due to defective outdoor unit PCB 148 Troubleshooting SiBE12 908_A Troubleshooting Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check E 02 Note on resetting power supply Refer to P 169 ch reset the unit power off status need to continue at least 30 seconds Turn off the power and turn it on Check No 03 again To cool down the electricals the Refer to P 170 outdoor unit fan gets started when the radiation fin temperature rises above 75 C even when the air conditioning is not operated and stops itself when it drops below Check No 05 70 C Refer to P 170 Does the fault appear again Does the outdoor fan run YES Check No 02 Thermistor resistance check Fin thermistor Check the radiation fin temperature Does the thermistor NO meet the specification chart of thermistor Replace the fin thermistor Does the temperature NO exceed the temperature to stop operation Replace the outdoor unit PCB Check No 05 NO Outdoor fan system check Replace the fan motor Hectify the connector and the fan motor lead wire YES Replace the outdoo
232. tes or more after turning off all power supplies before disassembling work Sie Procedure Points 1 Removal of the control Preparation PCB B Remove the panels plates 1 Remove the screw of and electrical box according the electrical box cover A to the removal procedure The control PCB is adopted upside down The lead free solder PbF is used on PCB When exchange use exclusive solder and soldering gun ES SAT gt 1 EN AS 2 Detach the insulation B The trimmed part goes front sheet Insulation sheet B The terminal board is united with thermal fuse arth terminal a Removal Procedure 236 Outdoor Unit Step Procedure 237 Remove the 2 screws of the terminal boards Helease the outdoor air thermistor from the hook Remove the 2 screws and detach the 1 clip to remove the radiation shield plate de NS a E ATAR A ENT LES EMT d SiBE12 908_A Removal Procedure SiBE12 908_A Outdoor Unit Sup Procedure Points Compressor harness R9961 B The clip is push mount type Cut off the clamps at 2 locations and disconnect the wire harnesses QS D gt IRE N NS Sc Removal Procedure 238 Outdoor Unit SiBE12 908_A Procedure Remove the 7 screws in total
233. the unit stops due to input over current after connecting or disconnecting wires to replace part check wiring for proper connection Get restarted and measure the input current s the current value more than the set stop input current value NO l Replace the outdoor unit PCB Check No 11 Main circuit electrolytic capacitor check NO Replace electrolytic capacitor Turn off the power supply and disconnect U V and W harnesses Check No 14 x Check the inverter by the ed pr inverter checker PEERS YES Is LED turned off Rectify the power supply or replace the outdoor unit PCB Turn off the power supply replace the harnesses and restart the compressor after turning on the power supply again Check No 16 Discharge pressure check Check No 03 Installation condition check R14121 Service Diagnosis SiBE12 908_A Troubleshooting 2 21 Discharge Pipe Temperature Control has m Remote Controller Display Method of Discharge pipe temperature control stop frequency attenuation etc is executed based on the Malfunction temperature detected by the discharge pipe thermistor Detection Malfunction If the temperature being detected by the discharge pipe thermistor rises the compressor stops Decision The temperature at which the compressor halts varies according to the frequency Conditions 1 110 C when the frequency is above 30Hz on ascending or above 25Hz on descending 2
234. the safety device might start preventing operation In this situation warm the outside temperature thermistor on the outdoor unit to 10 C or warmer Operation will start Connecting the Humidifying Hose Either one of the following sets optional accessories is required when connecting humidifying hoses Prepare the 10 or 15m set according to the conditions of the site Optional accessories KPMH996A10S 10m set Joint 025 9 8m With cuff 9 2m With cuff miili I D 25mm S 1 D 25mm 1 Lo 3 p 082 qo d EI o a Y s Rwy af 1 M A 2 205 S d Ke Y Ys D TRS IX me DDD DA D SS 5 3 SS TU Ta D SUU Sy SS S3 KY I m 211 di DAI QI IN d d x ei QR Joint 430 Reducing Humidifying hose Installation joint manual 030025 nUT l LJ A HS LJ SS SY d L7 i l e CRM x d Qu 7 d K TERO l c IEA E TE 7 2 4 10 Installation Operation Manual 74 Installation Manual SiBE12 908_A Connecting the Humidifying Hose 1 Connecting to indoor unit Keep the following items in mind in order to prevent the degrading of humidification performance when connecting the humidifying hose to the indoor unit 1 Cut the excessive portions of the humidifying hoses Determine the overall length of the humidifying hoses according to the installation manual for the indoor unit 2 Be sure to avoid traps as much as possible when installing the
235. the start of heating operation it takes some time before the room gets warmer e n heating operation frost may occur on the outdoor unit and lower the heating capacity In that case the system switches into defrosting operation to take away the frost During defrosting operation hot air does not flow out of indoor unit A pinging sound may be heard during defrosting operation which however does not mean that the air conditioner has failures Bi Note on COOL operation This air conditioner cools the room by blowing the hot air in the room outside so if the outside temperature is high the performance of the air conditioner drops B Note on DRY operation The computer chip works to rid the room of humidity while maintaining the temperature as much as possible It automatically controls temperature and airflow rate so manual adjustment of these functions is unavailable Bi Notes on AUTO operation e n AUTO operation the system selects a temperature setting and an appropriate operation mode COOL or HEAT based on the room temperature at the start of the operation The system automatically reselects setting at a regular interval to bring the room temperature to user setting level f you do not like AUTO operation manually change the set temperature Bi Note on FAN operation This mode is valid for fan only Bi Note on airflow rate setting At smaller airflow rates the cooling heating effect is also smaller 83 Installatio
236. the unit is running The remote controller can send the ECONO command when the unit is in COOL HEAT DRY or AUTO operation B When the ECONO command is valid the input current is under reducing control Refer to Input current control on page 45 31 Function and Control SiBE12 908_A Main Functions 1 12 NIGHT SET Mode When the OFF timer is set the NIGHT SET circuit automatically activates The NIGHT SET circuit maintains the airflow setting made by users The NIGHT SET The NIGHT SET circuit continues heating or cooling the room at the set temperature for the first Circuit one hour then automatically raises the temperature setting slightly in the case of cooling or lowers it slightly in the case of heating for economical operations This prevents excessive heating in winter and excessive cooling in summer to ensure comfortable sleeping conditions and also conserves electricity Cooling Operation Temperature setting 0 5 C Temperature setting Operation stops at the set hours Timer operation Night Set Circuit ON temperature shift R4421 Heating Operation Thermostat setting 2 C l i A A Timer operation 1 hour later Night Set Circuit ON R1362 Function and Control 32 Main Functions SiBE12 908_A 1 13 Other Functions 1 13 1 Multi Colored Indicator Lamp Features Current operation mode is displayed in color of the lamp of the indoor unit which changes in 6 colors Operating status can be mo
237. them any further aT a 8 Use a torque wrench to tighten the valve caps and service port caps on the liquid and gas stop valves at the pipes for rooms A and B to the designated torque Gauge manifold Room A liquid stop valve Low pressure valve Room A gas stop valve Room B liquid stop valve High pressure valve Charge hose Room B gas stop valve Vacuum pump adapter Vacuum pump Service port 71 Installation Operation Manual SiBE12 908_A 5 Refilling the refrigerant Check the type of refrigerant to be used on the machine nameplate Precautions when adding R410A Fill from the liquid pipe in liquid form It is a mixed refrigerant so adding it in gas form may cause the refrigerant composition to change preventing normal operation Installation Manual 1 Before filling check whether the cylinder has a siphon attached or not It should have something like liquid filling siphon attached displayed on it Filling a cylinder with an attached siphon Stand the cylinder upright when filling There is a siphon pipe inside so the cylinder need not be upside down to fill with liquid Filling other cylinders Turn the cylinder upside down when filling 2 Be sure to use the R410A tools to ensure pressure and to prevent foreign objects entering 6 Charging with refrigerant e f the total length of piping for all rooms exceeds 20m additionally charge with R410A 20g of refrigerant for ea
238. tion Detail The frequency control is made within the following zones 2 Hz drooping 1 0 second after After 2 5 seconds rushing in the lt gt drooping zone Compressor stops 14 Stop zone 2 droopin Drooping zone Kee zon Reset zone R1378 When a stop current continues for 2 5 seconds after rushing on the stop zone the compressor operation stops If a drooping current is continues for 1 0 second after rushing on the drooping zone the frequency is 2 Hz drooping Repeating the above drooping continues until the current rushes on the drooping zone without change In the keep zone the frequency limit remains In the return reset zone the frequency limit is cancelled Limitation of current drooping and stop value according to the outdoor air temperature 1 In case the operation mode is cooling The current droops when outdoor air temperature becomes higher than a certain level model by model 2 In case the operation mode is heating The current droops when outdoor air temperature becomes higher than a certain level model by model 3 Freeze up Protection Control Outline During cooling operation the signals being sent from the indoor unit allow the operating frequency limitation and then prevent freezing of the indoor heat exchanger The signal from the indoor unit must be divided into the zones as the followings Detail Conditions for Start Controlling Judge the controlling star
239. tion Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Connector connection check Correct connections YES Replace PCBs R14126 Connector Nos vary depending on models Model Type Connector Wall Mounted Type Terminal strip Control PCB 120 Troubleshooting SiBE12 908_A 28 Freeze up Protection Control or Heating Peak cut Control v em a Remote 1 Controller Display Method of B Heating peak cut control Malfunction During heating operations the temperature detected by the indoor heat exchanger Detection thermistor is used for the high pressure control stop outdoor fan stop etc B Freeze up protection control operation halt is activated during cooling operation according to the temperature detected by the indoor unit heat exchanger thermistor Malfunction B Heating peak cut control Decision During heating operations the temperature detected by the indoor heat exchanger Conditions thermistor is above 65 C B Freeze up protection When the indoor unit heat exchanger temperature is below 0 C during cooling operation Supposed Operation halt due to clogged air filter of the indoor unit Causes Operation halt due to dust accumulation on the indoor unit heat exchanger 121 Operation halt due to short circuit Detection error due to faulty indoor unit heat exchanger thermistor Detection error due to faulty indoor unit PCB Service Diagnosis SiBE1
240. tion Decision Conditions Supposed Causes Service Diagnosis KS dc Ut An output overcurrent is detected by checking the current that flows in the inverter DC section A position signal error occurs while the compressor is running A speed error occurs while the compressor is running The unit shuts down when the signal of output overcurrent is sent repeatedly from the output overcurrent detection circuit to the microcomputer Clear condition The unit continuously runs for about 11 minutes without fault Overcurrent due to defective power transistor Overcurrent due to wrong internal wiring Overcurrent due to abnormal supply voltage Overcurrent due to defective PCB Detection error due to defective PCB Overcurrent due to closed stop valve Overcurrent due to defective compressor Overcurrent due to poor installation condition 152 Troubleshooting Troubleshooting 153 Check No 03 Refer to P 170 Check No 14 Refer to P 173 Check No 15 Refer to P 175 Check No 16 Refer to P 175 SiBE12 908_A Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Output overcurrent may caused by improper wiring inside the unit If the unit stops due to output overcurrent after connecting or disconnecting wires to replace part check wiring for proper connection Is the stop valve fully opened Open the stop valve fully Check that the fault
241. to the user that the room of priority setting is humidified prior to the other room Explain to the user that HUMID HEAT operation or FRESH AIR SUPPLY VENTILATION can not be performed simultaneously in the both 2 rooms Correct it within the specified length Explain it to the user Reset the hose length by remote controller Clean the humidification filter Repair breakage or remove blockage Use the proper hose specified by DAIKIN Improve so as not to get short circuit Explain to the user Explain to the user R9682 118 Troubleshooting SiBE12 908_A Continued from the previous 1 page Is the set temperature by remote controller too high Explain to the user Is the outdoor temperature or humidity extremely low Low Explain to the user Set the air outlet at the height of 1 8 m Confirm the humidification performance R9434 d Note Refer to P 40 for the priority room setting 119 Service Diagnosis SiBE12 908_A 2 7 Remote Controller Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting d Note Service Diagnosis Troubleshooting Indoor Unit PCB Abnormality DI e Evaluation of zero cross detection of power supply by the indoor unit PCB When there is no zero cross detection in approximately 10 continuous seconds B Faulty indoor unit PCB B Faulty connector connec
242. uency is less than zero AF lt 0 by PI control the target frequency is used as the command frequency Drooping function Input current control etc Upper limit frequency Upper limit function FMAX Compressor protection function Command frequency Limit frequency Skip control Target frequency Initial frequency Lower limit frequency Lower limit function FMIN Four way valve operating compensation etc Defrost control only for heat pump model PI control R11592 Detail How to Determine Frequency The compressor frequency is determined by taking the following steps For Heat Pump Model 1 4 Determine command frequency Command frequency is determined in the following order of priority 1 1 Limiting defrost control time 1 2 Forced cooling 1 3 Indoor frequency command 2 Determine upper limit frequency Set a minimum value as an upper limit frequency among the frequency upper limits of the following functions Compressor protection input current discharge pipe temperature low Hz high pressure limit heating peak cut freeze up protection defrost 3 Determine lower limit frequency Set a maximum value as an lower limit frequency among the frequency lower limits of the following functions Four way valve operation compensation draft prevention pressure difference upkeep 4 Determine prohibited frequency 41 There is a certain prohibited frequency such as a power supply frequency
243. umidifying hose DAN Os O 72 T Alternate up and down R10319 INS A VAN WC C f m MS US n Duct unit R10320 Pr CT Se R10321 Projection Indoor Unit Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Preparation B Remove the front grille according to Removal of the Front Grille Since inside of the connecting duct has projection hooks shake the hose up and down to remove Rotate in the same direction as when assembling for easy removal B When assembling make sure to insert the projection into the fixing hole on the duct unit 202 Indoor Unit 1 8 Removal of Heat Exchanger Procedure 1 Disconnecting the 203 refrigerant pipe Remove the screws which fix the heat exchanger to the installation plate Release the 2 hooks at the bottom Lift the indoor unit by a wooden base Lift up the indoor unit body slightly and pull out the drain hose In the case of left piping Disconnect the pipe connection with 2 pair of spanners From the point of view of environmental protection be sure to use a vacuum pump for air purging AN Warning SiBE12 908_A Be sure to turn off all power supplies at least 10 minutes before disassembling work Procedure R10322 R10323 R10324 R10325 m When reassembling make sure the drain hose is sloped downwar
244. ure are converted to the following states in a period of 20 minutes Operation mode Fan speed Remote controller set temperature COOL Hap 50 pm DRY Dry rotating speed Normally targeted 50 rom temperature in dry operation Approx 2 C H tap 50 rom 30 C Ha 50 rpm o o o y Same as cooling The target is kept heating in POWERFUL unchanged operation Target temp Set temp Eet POWERFUL ON POWERFUL OFF i Ending condition or in 1 to 3 1 After the lapse of 20 minutes 2 Stop 3 POWERFUL operation is OFF R4606 30 Main Functions SiBE12 908_A 1 11 ECONO Mode Outline The ECONO mode reduces the maximum operating current and power consumption by approx 30 during start up etc This mode is particularly convenient for energy saving oriented users It is also a major bonus for those whose breaker capacities do not allow the use of multiple electrical devices and air conditioners It is easily activated from the wireless remote controller by pushing the ECONO button B When this function is ON the maximum capacity is also down Approx 20 B This function can only be set when the unit is running Pressing the operation stop button causes the settings to be canceled B This function and POWERFUL operation cannot be used at the same time The latest command has the priority Power consumption and current Econo Mode Time R4300 Details ECONO mode can be activated while
245. ve the vertical a only one blade blade toward yourself B The set of blades is not marked for difference between right and left AWN Vertical an TT 193 Removal Procedure SiBE12 908_A 15 Removal of Electrical Box Procedure before disassembling work Step Procedure Points The figure shows the connections of wire harnesses N D A Ne o NA b li T 1 ay AR Remove the screw of the electric wire retaining plate to remove the plate R10305 NJ NE SC Je et Remove the screws of the terminal board and disconnect the connecting wires i ES S CL LE N SL R10306 SI Disconnect the connector of the fan motor S1 Ey CA SCH DARE t y V i Removal Procedure Terminal board R10307 R10308 Preparation Indoor Unit MN Warning Be sure to wait 10 minutes or more after turning off all power supplies B Remove the front grille according to the Removal of Front Grille 194 Indoor Unit SiBE12 908_A Step Procedure Points 5 Disconnect the B Put any excess wires behind connector of the swing the power supply lead wire motor S41 ZA RUINS ws ly e m 2 ARE tS
246. vice check mode When the remote controller is left untouched for 60 seconds it returns to the normal mode also Service Diagnosis 106 Troubleshooting SiBE12 908_A 2 Troubleshooting 2 1 Error Code Indication by Remote Controller Various cases may be possible Damper abnormality 142 Position sensor abnormality 143 DC voltage DC current sensor abnormality Outdoor air thermistor abnormality Discharge pipe thermistor abnormality Outdoor heat exchanger thermistor abnormality Outdoor Liquid pipe thermistor abnormality Gas pipe thermistor abnormality Abnormal temperature in electrical box Temperature rise in radiation fin Output overcurrent Radiation fin thermistor abnormality 145 Fan motor system abnormality fan lock 146 146 146 146 146 148 150 152 146 162 Heater wire abnormality 163 Humidifying unit Humidification fan outlet thermistor abnormality abnormal heater 165 temperature Refrigerant shortage 154 System Over voltage protection OVP low voltage protection LVP 156 Signal transmission error indoor unit outdoor unit 127 Outdoor unit PCB abnormality or communication circuit abnormality 157 Signal transmission error on outdoor unit PCB 160 129 130 System Incompatible power supply between indoor unit and outdoor unit Incomplete setting for hose length LO 9 lt CH D Q sad O 2 O D o esch 07 SiBE12 908_A Troubleshooting Reference pa
247. w 10 C 3 11 Defrost Control Outline Detail 47 Defrosting is carried out by the cooling cycle reverse cycle The defrosting time or outdoor heat exchanger temperature must be more than a certain value to finish Conditions for Starting Defrost B The starting conditions is determined with the outdoor temperature and the outdoor heat exchanger temperature B The system is in heating operation The compressor operates for 6 minutes B More than 30 minutes of accumulated time pass since the start of the operation or ending the previous defrosting Conditions for Canceling Defrost The target heat exchanger temperature as the canceling condition is selected in the range of E C according to the outdoor temperature B Hz A Hz Eredilone PI control i 0 Hz 60 sec 120 sec 530 sec 30 sec ON Compressor OFF ON Four way valve OFF 5 sec 5 sec ON Fan OFF Electronic expansion 450 pulse 350 pulse 450 pulse valve opening C pulse Ehe operating room Electronic expansion valve opening stop room O pulse 140 pulse D pulse Initial opening R12739 40dass 50 class Function and Control SiBE12 908_A Control Specification 3 12 Electronic Expansion Valve Control Outline Function and Control The following items are included in the electronic expansion valve control Electronic expansion valve is fully closed 1 Electronic expansion valve is fully closed when turni

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