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Service Manual

1. Ee Zan FIELD WIRING wYL U Mic C74 C75 C94 Mit FAN MOTOR V1 V3 V4 VARISTOR EE S C95 C100 CAPACITOR MRCW MRM10 X1M X2M TERMINAL STRIP BLK BLACK DB1 DB2 DIODE BRIDGE MRM20 MAGNETIC RELAY Y1E Y2E ELECTRONIC EXPANSION VALVE COIL BLU BLUE FU1 FU2 FU3 FUSE N NEUTRAL ze FERRITE CORE BRN BROWN CH TRIAC PCB1 PRINTED CIRCUIT BOARD PROTECTIVE EARTH GRY GREY IPM1 INTELLIGENT POWER MODULE Q1L OVERLOAD PROTECTOR 20 521 540 ORG ORANGE L LIVE R1T R8T THERMISTOR S70 S80 S45 RED RED L1 COIL SA1 SURGE ARRESTER S90 S91 S92 WHT WHITE LAR REACTOR TFU THERMAL FUSE XA CONNECTOR YLW YELLOW M1C COMPRESSOR MOTOR 3D055671B Ee LIR 3 i l S 8 HR1 HR2 POBI MRM20 e IPM1 u 57 DB1 ae toot iii HLIFUS fT val Looo MRM10 c74 30A 000 DB2 Si 4 e laos SE C94 C95 bo v3 S LU ga BYE i ES E FUT c75 l 3 15A Z3C SAT Vi de i M e q AE WC zaclw v Ul Ol N 3 2 MRCW 92 RED S91 WHT S20 WHT S21 RED S90 570 S40 1 4 1 4 1 6 1 6 2 1 1 6 1 7 2 1
2. gt al 24 S80 S21 S20S91S90 S92 S40 S45 2P197402 Printed Circuit Board Connector Wiring Diagram 21 Printed Circuit Board Connector Wiring Diagram SIEN12 710A 22 Printed Circuit Board Connector Wiring Diagram Si12 710A Function and Control 1 2 Part 4 Function and Control Main FUNCION a eee 24 1 1 Frequency Principle nennen enn enen enen ennn ennn ennsnennnnnnnnennnnnnnnnnn 24 1 2 Power Airflow Dual Flaps Wide Angle Louvers and Auto Swing 26 1 3 Fan Speed Control for Indoor Une 27 1 4 Programme Dry FUnCtiON enee entrees tbe nes beid 28 1 5 Automatic Operation 29 1 6 Thermostat Control 30 1T Night SEE MOAB erinnern tate betsaat loo decis 31 18 ECONO MDS A EE EE 32 19 INTELLIGENTEYE 00d dinuclear 33 1 10 HOME LEAVE Operation nannonnn onnennennnennnennsenneenneenenenenen 35 1 11 Inverter POWERFUL Operation 36 WAZ Other e ne le EE 37 1 13 Function of Thermistor eenen venen eren enn vennen ennn ennen 39 Control Specification reese Ee EE EES 42 21
3. Cooling Only SiEN12 710A m m s s Ss a s a 6 Category Functions B 3 Category Functions B 3 SS er US Q D D 9 a D LL LL LL LL Basic Inverter with Inverter Power Control O O Health A Air Purifying Filter kunoetion cigan Photocatalytic Deodorizing Filter Operation Limit for Cooling CDB Sn Air Purifying Filter with Photocatalytic _ __ Deodorizing Function Operation Limit for Heating CWB Es Titanium Apatite Photocatalytic ol PAM Control SS Air Purifying Filter Compressor Oval Scroll Compressor Mold Proof Air Filter O O Swing Compressor Wipe clean Flat Panel O Rotary Compressor Washable Grille Reluctance DC Motor Mold Proof Operation O Comfortable Power Airflow Flap Heating Dry Operation Arow Power Airflow Dual Flaps O Good Sleep Cooling Operation Power Airflow Diffuser Timer 24 Hour On Off Timer O O Wide Angle Louvers O Night Set Mode O O Vertical Auto Swing Up and Down O Worry Free Auto Restart after Power Failure O O Horizontal Auto Swing Right and Left Durability amp Self Diagnosis Digital LED Display O O 3 D Airflow Wiring Error Check Comfort Airflow Mode ee Anticorrosion Treatment of Outdoor N 3 Step Airflow H P Only Heat Exchanger Comfort Auto Fan
4. B When assembling align V mark of the propeller fan with D cut section of the motor shaft el S E fa f y eS a R7620 2 Remove the fan motor 1 Disconnect the S70 Gs connector S70 for the ja 4 i it IN fan motor from the S SE y m H N PCB e Si R7621 170 Removal Procedure SiEN12 710A Outdoor Unit Step Procedure Points 2 The figure shows the arrangement of the fan motor lead wire 3 Loosen the 1 screw to remove the fan motor fixing plate 4 Take out the fan motor fixing plate toward yourself SH i Wi Ani air i in SN al Goin vA D H m O a o I AAA IN Pa o lt A A E dau d ot EN er i di Di A a Cae A Lom R7623 R7624 R7625 E When assembling make sure e mark of the fan motor goes down Removal Procedure 171 Outdoor Unit SiEN12 710A Step Procedure Points 5 Turn the fun motor fixing plate backward and undo the 2 fixing hooks of the lead wire
5. PCB4 NTELLIGENT EYE SENSOR SS INFRARED REMOTE CONTROL R2T SIGNAL RECEIVER M1S INDOOR 2 1 2 Duct Connected Type 1 FIELD WIRING I F1U H1 i 1 ki I 3 15A X1M 4 vi Si e BLK 1 3 OUTDOOR WHT 2 1 LO I RED 3 i I TRANSMISSION GRN CAUTION TRANSMISSION HS uw NOTE THAT OPERATION WILL CIRCUIT RESTART AUTOMATICALLY IF THE MAIN POWER SUPPLY IS 1 TURNED OFF AND THEN BACK 1 ONAGAIN I 1 I EE l FG FRAME GROUND FU FUSE H1P H3P PILOT LAMP MIF FAN MOTOR MIS SWING MOTOR PCB1 PCB4 PRINTED CIRCUIT BOARD RIT R2T THERMISTOR S1 538 CONNECTOR siw OPERATION SWITCH XIM TERMINAL STRIP PROTECTIVE EARTH 3D046453B FDKS25 35EAVMB FDKS25 35CAVMB FDXS25 35CVMA CDXS25 35EAVMA PT ET a ee eee Pe ee ea q PCB1 l i 1 e E l AS F1U seCh i MIIR Z 315A i S td LED LED LED sy Is26 3 outdoor IJ S rror EEE HIP H2P H3P oo 7 l FIELD WIRING otto KE ede eros ee el l A E CENTRALIZE
6. S92 S91 ar e Si TM a y i G AS A MPA ASSE A d DI R7581 refer to Removal of the PCB S91 Gas pipe thermistor white S92 Liquid pipe thermistor red S40 Overheating protector Removal Procedure 159 Outdoor Unit 9 Disconnect the 8 Undo the wire clip from the electrical box connector for the relay Y R7583 harness of compressor Discharge pipe thermistor d AN EB The clip is push mount type SiEN12 710A Step Procedure Points 7 Disconnect the S20 Electronic expansion connectors S20 S21 S20 S21 S80 valve EVA and S80 hi S21 Electronic expansion IN valve EVB S80 Four way valve R7584 10 Disconnect the 2 connectors for the reactor R7585 160 Removal Procedure SiEN12 710A Outdoor Unit Step Proce
7. R7626 E When assembling put the lead wire through the back of the motor so as not to be entangled with the propeller fan 6 Release the fan motor lead wire Lead wire Propeller fan R3249 R7627 7 Loosen the 4 screws and 4 rubber vibration isolators to remove the fun motor R7628 R7629 172 Removal Procedure SiEN12 710A Outdoor Unit 1 6 Removal of the Thermistors Procedure A Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Remove the assembly of H Be careful not to lose the clip thermistor for the discharge pipe 1 Undo the clip and remove the discharge pipe thermistor 2 Cut off the clamp to remove the heat exchanger thermistor 3 The outdoor air discharge pipe heat exchanger thermistors are united as one assembly 4 The figure shows the arrangement of the assembly of thermistor S90 R7630 R7631 Outdoor air thermistor R7632 thermistor R7702 The clamp is always reserved Be careful not to lose the clips for each thermistor
8. 3 Frequency command from an indoor unit The ranked capacity of the operating room 4 Frequency initial setting 5 Pl control Frequency changes by PI control lt repeats when frequency becomes lower Command frequency X repeats when frequency becomes lower Each drooping function Input current control etc Upper limit frequency Each upper limit function FMAX Compressor protection function Command frequency Limit frequency Skip control Target frequency Initial frequency Lower limit frequency Each lower limit function PI control FMIN Four way valve operating compensation etc Defrost control only for heat pump model R1375 Detail How to Determine Frequency The compressor s frequency will finally be determined by taking the following steps For Heat Pump Model 1 Determine command frequency Command frequency will be determined in the following order of priority 1 1 Limiting frequency by drooping function Input current discharge pipes low Hz high pressure limit peak cutting freeze prevention dew prevention fin thermistor temperature 1 2 Limiting defrost control time 1 3 Forced cooling 1 4 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 pipes Low Hz high pressure peak cutting freeze prevention de
9. A Stop zone When increase 30 When decrease 2 Drooping zone Keep zone Up zone Heat exchanger thermistor Reset zone temperature Function and Control 49 Control Specification SiEN12 710A 2 8 Fan Control Outline 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 operation 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 Detail 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 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 Only for heat pump model 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 12 C the fan tap must be set to M When the outdoor air temperature is higher than 12 C the fan ta
10. CS os B To stop operation 3 Press ON OFF button again e Then OPERATION lamp goes off a To change the temperature setting 4 Press TEMPERATURE adjustment button ED O Je oa MODE SWING QUIET ve el SENSOR COJO LON J el Ee CANCEL ei 5 and TIMER DRY or FAN mode AUTO or COOL or HEAT mode The temperature setting is not variable Press A to raise the temperature and press Y to lower the temperature Set to the temperature you like art L te Operation Manual 73 Instruction To change the air flow rate setting 5 Press FAN setting button SiEN12 710A DRY mode AUTO or COOL or HEAT or FAN mode plus fA 24 are available The air flow rate setting is not variable Five levels of air flow rate setting from z to E e Indoor unit quiet operation When the air flow is set to 24 the noise from the indoor unit will become quieter Use this when making the noise quieter The unit might lose capacity when the air flow rate is set to a weak level NOTE 74 Note 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
11. 11 Heat Pump SiEN12 710A 50Hz 220 230 240V Model CDXS25EAVMA CDXS35EAVMA Cooling Heating Cooling Heating Rated Capacity 2 5kW Class 3 5kW Class Front Panel Color External Static Pressure Pa 30 30 H 8 7 307 8 7 307 8 7 307 8 7 307 m min M 8 0 282 8 0 282 8 0 282 8 0 282 Air Flow Rate cfm L 7 3 258 7 3 258 7 3 258 7 3 258 SL 6 2 219 6 2 219 6 2 219 6 2 219 Type Sirocco Fan Sirocco Fan Fan Motor Output W 62 62 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 47 0 48 0 49 0 47 0 48 0 49 0 47 0 48 0 49 0 47 0 48 0 49 Power Consumption Rated Ww 70 71 72 70 71 72 70 71 72 70 71 72 Power Factor 67 7 64 3 61 2 67 7 64 3 61 2 67 7 64 3 61 2 67 7 64 3 61 2 Temperature Control Microcomputer Control Microcomputer Control Dimensions HxWxD mm 200x700x620 200x700x620 Packaged Dimensions HxWxD mm 274x906x751 274x906x751 Weight kg 21 21 Gross Weight kg 29 29 SEN H M L SL dBA 35 33 31 29 35 33 31 29 35 33 31 29 35 33 31 29 Moisture Removal L h 1 2 1 9 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Liquid mm 064 Q 6 4 Piping Connection Gas mm 095 09 5 Drain mm VP20 O D 26 1 D 20 VP20 O D 26 1 D 20 Drawi
12. Y Check with the inverter checker YES gt Replace the electrolytic capacitor Inverter checker Part No 1225477 Turn off the power and reconnect the harnesses Turn on the power again and get restarted Check No 08 Check the discharge pressure Check No 07 Check the installation condition h If the model doesn t have SPM replace the outdoor unit PCB gt Correct the power supply or replace the SPM Replace the outdoor unit PCB R7140 123 Troubleshooting SiEN12 710A 4 12 Discharge Pipe Temperature Control Remote Control Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting 124 Check No 04 Refer to P 146 Check No 06 Refer to P 149 Check No 11 Refer to P 152 5 F3 The discharge pipe temperature control stop frequency drooping etc is checked with the temperature being detected by the discharge pipe thermistor If the temperature being detected by the discharge pipe thermistor rises the compressor will stop The temperature at which the compressor halts varies according to the frequency 1 110 C when the frequency is above 30Hz on ascending or above 25Hz on descending 2 108 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 If the compresso
13. PDA EK IM SiEN12 710A Service Inverter Multi F Series Applied Models Inverter Multi Cooling only lnverter Multi Heat Pump SIEN12 710A eCooling Only Outdoor Unit 2MKS40FV1B eHeat Pump Outdoor Unit 2MXS50FV1B Table of Contents Indoor Unit FTKS25DVM FTKS35DVM Indoor Unit FTXS25EVMA FTXS35EVMA Inverter Multi F Series FDKS25CAVMB FDKS35CAVMB FDKS25EAVMB FDKS35EAVMB FDXS25CVMA FDXS35CVMA CDXS25EAVMA CDXS35EAVMA SiEN12 710A 1 Introduction cc V 1 1 Safety Caution Sia AA dann Vv NC DMR Ee Wee EE ix Part 14 List OF FUNCTIONS s osarsrarszensndeansensenennecvanndunnesnunnoundensensunsdanene Ty GOOG DAY A A A A 2 2e heat PUMP ee 4 Part 2 Specifications ek EK EEK EE KEE KEE KEE naa f T ee ee e ON EE 8 11 lt Imdoor BCEE 8 12 OUTAOOF le TEE 10 2 NAGA PUMPE debet oren cae 11 21 door LCE 11 22 Outdoor le TEEN 13 1 Printed Circuit Board Connector Wiring Diagram 16 1 1 Wall Mounted Ee EE 16 1 2 Duct Connected TYPE nt anced sma teit a eae 18 Wied Outdoor A oaeen shesiheda cain cnet EE 20 Part 4 Function and Control nnnansssnnnnnnsnansnnnnnnnnsanssnnnnnnnenssnen 29 Ve Main FUNCION SNS aten Ende ede ee 24 1 1 Frequency Principle nanne enn enen enen enen ennn ennsnensnnnnnnnnennnnnnnnnnn 24 1 2 Power Airflow Dual Flaps Wide Angle Louvers and Auto Swing 26 1 3 Fan Speed Control for Indoor Une 27 1 4 Programme Dry Function re s
14. A Caution Operate the fan Does it rotate Check No 16 Check Hall IC Rotate the fan by hand Is there an output Replace the fan motor or control PCB Does it rotate NO smoothly d Replace the fan motor Check the fan motor voltage Check the fan motor voltage immediately after re start NO gt Replace control PCB Is it at the rated voltage Is it at the rated NO YES HA Replace the fan motor voltage Check the capacitor s conductivity Is there conductivity gt Replace the control PCB Measure the voltage between the red and black lead wires of the fan motor and check if the maximum voltage reaches the rated voltage YES Replace the capacitor Replace the control PCB Replace the fan motor R7132 Service Diagnosis SiEN12 710A Troubleshooting 4 4 2 DC Motor Remote Control Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Service Diagnosis Ab 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 t
15. nennen 132 reduction motor n nennen eeen ennennen 116 remote control nonnen a aa aar eiae 105 removal procedure COMPrESSO 445 zins ge tt iarann 175 electrical DOX annees vereen 158 electronic expansion valve sessen 177 fan motor zt edn 170 four way valve nnen ennen 177 panels and plates nnn eneen 156 PCB trente elen neee 163 propeller fan nanne eenen eneen 170 sound blanket TEEN 168 thermistors 173 room temperature thermistor en 115 EA NR 16 18 S Siiran Ree hd te tals aes Eden a 16 18 e EEN 20 S2 RETTEN 16 18 20 E ennen rer eebe 16 18 EEN 16 e eee ee ae e al 16 LO titanio ala ee EE ue 16 ee ee Eege 16 18 ET 16 DJO ses ac ene e 16 DAO TEEN 20 OAD Ree Renner oer ata tad 20 de Ae een leet atin 16 DU Sas eee one E Sed ee cea 18 DLO EE 20 een ee 20 e 20 SO EE E 20 e EE Een 20 safety precautions nun vennen 62 A zenders ina eeh banana eaten dik ann 54 self diagnosis digital display ee 38 sensor malfunction detection 56 service check function n nennen 105 signal receiver PCB nennen vennen 17 signal receiving sign nnn ennen 37 signal transmission circuit abnormality 143 SEON Grease sar enian ake Eana kde 182 specification 8 Starting operation 54 NH enee AE EA 16 18 T ln D NEE 180 thermistor discharge pipe thermistor 39 41 54 132 lee EE 39 gas pipe thermistor 39 41
16. 73 automatic air flow Control _ nne 27 automatic operation ann nennenenneee nennen enn 29 te El GE 16 181 auto restart function nennen eneen 38 AUO SWING TEEN 26 Cc A En 115 CL attente eae are ret ls ee ae he 116 See 115 capacitor voltage check eee 152 care and cleaning nnen nennen ennen 89 centralized control aaneen 16 18 changing operating room control 54 check NOOT viii aia 146 Check Mo stacks ti 146 check No 04 nennen rennen ven 146 EN ee EE 148 check Nope 149 check e ET 150 Check Mo D I nnn ren ti eect dd 151 Check NO D9 caca debatida 151 check No10 ee aaa 151 check Molen sack fee cate 152 Check NO 12 TEEN 152 heck No 13 ess seen eee een eee 153 check Mo 73 ENNEN anida 153 check No 1D EE 154 check NO AG ENEE ENEE aAa 154 compressor lock ae eeneneneeenneneneenenn 120 compressor overload nnee eneen eneen 119 compressor protection function nen 47 compressor sensor system abnormality 127 Eeler 16 18 20 control PCB 40 class eneen 21 control PCB 50 class nnee 21 control PCB indoor unit ee 17 19 control PCB outdoor um 143 D DBT ces ee et gti eel ane ane de 20 DB2 ennen aA 20 le n 121 Index index DC voltage DC current sensor abnormality 130 defrost control ee 51 diagnosis mode sonerii ara kerran E REENE 106 diode Didge TEE 182 discharge pipe neringen an eenen a 55 discharge
17. 8 Lift up the back side slightly and undo the hooks of the front 9 Undo the lead wires from the hook and remove the terminal board on the side CR IN SE as je R7604 m Make sure that the hooks of the electrical box are placed on the PCB Removal Procedure 165 Outdoor Unit SIEN12 710A Step Procedure Points Lift up the control PCB to remove Detach the faston terminals from the temperature fuse and each terminal board VU UU VY oe ho beta y S70 S40 S92 SC S90 a Lg ail R7606 E See page 20 for detail S91 S20 S21 Af a D AA IP dad Are gt EL PO Es o J S GAO o cm S20 S21 S70 S80 S90 S40 0 i d Foc BST gt BO or Sti R7607 Electronic expansion valve EVA Electronic expansion valve EVB Fan motor Four way valve Discharge pipe Heat exch
18. You can adjust the air flow direction to increase your comfort B To adjust the horizontal blades flaps 1 Press SWING button CG is displayed on the LCD and the flaps will begin to swing 2 When the flaps have reached the desired position press SWING button once more e The display will stop moving e disappears from the LCD Ce 5 OFF z t MODE FAN Eun 1 2 QUET CS SENSOR Ca C for 2sec ke Ev TIMER en Operation Manual 75 Instruction SiEN12 710A B To adjust the vertical blades louvers Hold the knob and move the louvers You will find a knob on the left side and the right side blades When the unit is installed in the corner of a room the direction of the louvers should be facing away from the wall If they face the wall the wall will block off the wind causing the cooling or heating efficiency to drop Notes on flaps and louvers angles 76 When SWING button is selected the flaps swinging range depends on the operation mode See the figure If the unit is operated after being stopped with the flaps pointed down in cooling or dry operation the flaps will automatically move to a hor izontal position after about one hour to prevent condensation from forming on them H ATTENTION Always use a remote control to adjust the flaps angle If you attempt to move it forcibly with hand when it is swinging the mechanism
19. AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Cheek No 04 Check the wiring and piping Refer to P 146 YES Check No 06 Refer to P 149 Wiring or piping out of spec NO Check No 04 Check the electronic expansion valve gt Correct the wiring or piping error NO YES Check No 06 Check the outdoor unit heat exchanger thermistor hermistor as NO gt Replace the defective EV or coil Specified in its characteristic chart Check No 06 Check the room temperature thermistor hermistor as NO gt Replace the heat exchanger thermistor Specified in its characteristic chart Change the gas to let moisture out of the unit after drawing a vacuum Error again YES gt Replace the room temperature thermistor gt Replace the room temperature thermistor or indoor unit heat exchanger thermistor Do the vacuum drying 118 Replace the indoor unit PCB R7136 Service Diagnosis SiEN12 710A Troubleshooting 4 8 OL Activation Compressor Overload Remote Control ES Display Method of A compressor overload is detected through compressor OL Malfunction Detection Malfunction E Ifthe compressor OL is activated twice the system will be shut down Decision B The error counter will reset itself if this or any oth
20. Difference between room and set temperature R4594 27 Main Functions SiEN12 710A 1 4 Programme Dry Function Programme dry function removes humidity while preventing the room temperature from In Case of Inverter Units 28 lowering Since the microcomputer controls both the temperature and air flow volume the temperature adjustment and fan adjustment buttons are inoperable in this mode The microcomputer automatically sets the temperature and fan settings The difference between the room temperature at startup and the temperature set by the microcomputer 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 temperature at Set temperature Thermostat OFF point Y Thermostat ON point Z startup X X 0 5 C or 24 C or more X 2 5 C Y 0 5 C zone B Room temperature at continues for 10 min 23 5 C startup X 0 5 C or 0 X 2 0 Y 0 5 C zone B 18 C continues for 10 min oC o EE X 0 5 C 17 5 C 18 C X 2 0 C l or Y 0 5 C zone B continues for 10 min Zone C Thermostat ON Zone A Thermostat OFF 0 5 C R6841 Function and Control SiEN12 710A Main Functions 1 5 Automatic Operation Automatic Cooling Heating Function Heat Pump Only When the AUTO mode is selected wit
21. Flexibility Multi Split Split Type Compatible o Outdoor Unit Quiet Operation Manual O Indoor Unit INTELLIGENT EYE Flexible Voltage Correspondence O Quick Warming Function High Ceiling Application Hot Start Function Chargeless 20m Automatic Defrosting Either Side Drain Right or Left Operation Automatic Operation Power Selection O r Remote 5 Rooms Centralized Controller Programme Dry Function O Control Option O Fan Only O n Remote Control Adapter o Lifestyle New POWERFUL Operation EE Normal Open Pulse Contact Option Convenience Non Inverter Inverter POWERFUL Operation O Remote Control Adapter 5 Priority Room Setting Normal Open Contact Option DIII NET Compatible Adapter Cooling Heating Mode Lock Option O HOME LEAVE Operation O Remote Wireless O ECONO Mode m Wired a Indoor Unit On Off Switch O Signal Reception Indicator O Temperature Display Another Room Operation Note O Holding Functions X Displayed on remote control of Indoor Unit No Functions List of Functions Heat Pump SIEN12 710A KE KE SIS ss Gr E el LO LO LO LO Category Functions Q S Category Functions L S BE a Ee le SES LL LL LL LL Basic Health 8 Function Inverter with In
22. MOJe ME EE 42 2 2 Frequency COU EE 43 2 3 Controls at Mode Changing Start up nana 46 2 4 Discharge Pipe Temperature Control 48 2 5 Input Current Control 48 2 6 Freeze up Protection Control 49 ge Elle NET e EE 49 2 8 FAN CONTO meta etten daan adden aten tdha nes 50 2 9 Liquid Compression Protection Function 3 50 210 Defrost Control inenen or 51 2 11 Electronic Expansion Valve Control 52 2 12 Malf nctons rsr iia 56 2 13 Forced Operation Mode 57 2 14 Additional Function noen en ennen vennen vennen eens ennnennnennns 58 23 Main Functions SiEN12 710A 1 Main Functions H Note See the list of functions for the functions applicable to different models 1 1 Frequency Principle Main Control Parameters Additional Control Parameters Inverter Principle Drawing of Inverter 24 The compressor is frequency controlled during normal operation The target frequency is set by 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 The target frequency is adapted by additional parameters in the following cases E Frequency restrictions E Initial settings B Forced cooling operation 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 conv
23. Generation of 3 pulses between pins 2 and 3 when the fan motor is operating Failure of 1 gt faulty PCB gt Replace the PCB Failure of 2 gt faulty Hall IC gt Replace the fan motor Both 1 and 2 result gt Replace the PCB 1 Gray power supply 2 Purple signals 3 Blue grounding R1968 154 Service Diagnosis SIEN12 710A Removal Procedure Part 7 Removal Procedure Te EE e een EE 156 1 1 Removal of the Panels and Plates ooococcnconnncccccoconencncnnnninnnnns 156 1 2 Removal of the Electrical Box 158 1 3 Removal of the PCB annen eneen eeen nennn erve nnenenenenenenen enen 163 1 4 Removal of the Sound Blanket cccccccccoconcoccncncnnocnconnoccnononnnnnnnononos 168 1 5 Removal of the Propeller Fan Fan Motor 170 1 6 Removal of the Thermistors naan eneen enen enenenenesenenenvennenen 173 1 7 Removal of the Compressor annae en neenneennennennneenneenenenneen 175 1 8 Removal of the Four Way Valve Electronic Expansion Valve 177 155 Outdoor Unit SiEN12 710A 1 Outdoor Unit 1 1 Removal of the Panels and Plates Procedure ZN Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 External appearance lt Handle es SEE RTE Rd ASIS RAE SAA d CZE AAA ERES TES Cd ER SSS vA SAA SES SEA SA Ey ie Eed LS pr
24. Replace the PCB Normal Check No 06 Check the heat exchanger thermistor Abnormal gt Replace the heat exchanger thermistor Normal gt Replace PCB R7142 Service Diagnosis SiEN12 710A Troubleshooting 4 14 Compressor Sensor System Abnormality Remote Control HO Display Method of Fault condition is identified by DC current which is detected before compressor startup Malfunction Detection Malfunction EB When the DC current before compressor startup is other than 0 5 to 4 5 V detected by Decision converting the sensor output to voltage or the DC voltage is 50 V or less Conditions Supposed m Defective PCB Causes B Harness disconnection defective connection Troubleshooting AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check the wire harness Damaged Is the wire harness damaged Replace the wire harness Normal Replace the outdoor unit PCB R7143 Service Diagnosis 127 Troubleshooting SiEN12 710A 4 15 Position Sensor Abnormality Remote Control HS Display Method of A compressor startup failure is detected by checking the compressor running condition through Malfunction the position detection circuit Detection Malfunction B The compressor is not running in about 15 seconds after the compressor run command Decision signal is sent Conditions B Clearing
25. e Itis inside of this cover 22 Outside air temperature sensor e It senses the ambient temperature around the unit Appearance of the outdoor unit may differ from some models 65 Instruction SiEN12 710A B Remote control 1 2 28 Do LG SC Dials qe ek dE 985093858 5 6 el em LL 9 FAN ml 10 QUIET nn SENSOR 8 _ f SL 12 13 bt ro 11 ITL 16 15 14 lt ARC433B46 B47 gt 1 Signal transmitter e It sends signals to the indoor unit 2 Display e It displays the current settings In this illustration each section is shown with all its displays ON for the purpose of explanation 3 ECONO button ECONO operation 4 POWERFUL button POWERFUL operation 5 TEMPERATURE adjustment buttons e It changes the temperature setting 6 ON OFF button e Press this button once to start operation Press once again to stop it 7 MODE selector button e It selects the operation mode AUTO DRY COOL HEAT FAN 66 8 QUIET button OUTDOOR UNIT QUIET OPERATION 9 FAN setting button e It selects the air flow rate setting 10 SWING button 11 MOLD PROOF button MOLD PROOF operation 12 SENSOR button INTELLIGENT EYE operation 13 ON TIMER button 14 OFF TIMER button 15 TIMER Setting button It changes the time setting 16 TIMER CANCEL button It cancels the timer setting 17 CLOCK button 18 RESET button e Restart the unit if it freezes Use a
26. 112 DC MOON EE 113 four way valve performance check 148 freeze up protection control 49 117 Drawings amp Flow Charts freeze up protection control or high pressure Control 110 frequency Control 43 frequency principle nnen eneen eenen eenen 24 front panel open close fault nnn 116 function of thermistor cooling only model nn eeen 41 heat pump model nnnnnnnnnnenneen eeen enn 39 H REIS 154 heating peak cut control eene 49 high pressure control in cooling eee 125 HOME LEAVE operation nnn 35 l indoor unit PCB abnormality 109 input current control _ eneen 48 input over current detection 122 installation condition check _ 150 insufficient CN 139 insufficient gas Control 56 INTELLIGENT E VE rreri anaE N aR 33 INTELLIGENT EYE sensor PCB een 17 inverter features nn enen nneenennene nennen 25 inverter POWERFUL operation 36 inverter units refrigerant system check 152 J jumper settings seirer riain ra e A E nennen 181 L limit switch continuity check 146 location of operation lamp 102 M main circuit electrolytic capacitor check 153 mode hierarchy oreesa 42 N night set mode nn nnssnrennnaneneere nennen 31 O OL activation compressor overload 119 ON OFF button on indoor unit eens 37 outdoor unit fan system check with DC motor 151 outdoor unit
27. 48 0 48 Power Consumption Rated W 71 71 Power Factor 64 3 64 3 Temperature Control Microcomputer Control Microcomputer Control Dimensions HxWxD mm 200x700x620 200x700x620 Packaged Dimensions HxWxD mm 274x906x751 274x906x751 Weight kg 21 21 Gross Weight kg 29 29 SEN H M L SL dBA 35 33 31 29 35 33 31 29 External Static Pressure Pa 30 30 Moisture Removal L h 1 2 1 9 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Liquid mm 06 4 0 6 4 Piping Connection Gas mm 09 5 09 5 Drain mm VP20 0 D 26 1 D 20 VP20 O D 26 1 D 0 20 Drawing No 3D051882A 3D051884A Conversion Formulae Note 1 The operating sound is based on the rear side suction inlet and the external static pressure 30 Pa Operating sound for under side suction inlet operating sound for rear side suction inlet 6 dB However when installation to which the external static pressure becomes low is carried out 6 dB or more may go up Specifications kcal h kWx860 Btu h kWx3414 cfm m minx35 3 Cooling Only SIEN12 710A 1 2 Outdoor Units 50Hz 230V Model 2MKS40FV1B Cooling Capacity kw Power Consumption Ww Running Current A Casing Color Ivory White Type Hermetically Sealed Swing Type Compressor Model 1YC23ABXD Motor Output Ww 600 Refrigerant Model FVC50K Oil Charge L 0 45 A Type R 410A Refi t Se
28. 7 Determine the error code The digits indicated when you hear the beep sound are error code Error codes and description Refer to page 108 8 Exit from the diagnosis mode Press the MODE button i ONOFF O SC TEMP Ce j CO ae R4278 Service Diagnosis 107 Troubleshooting SiEN12 710A 4 Troubleshooting 4 1 Error Codes and Description Code Indication Description deg System 00 Normal H r Insufficient gas 139 Ue Over voltage detection low voltage detection 141 uy Outdoor unit PCB abnormality or signal transmission circuit abnormality 143 uA Unspecified voltage between indoor and outdoor units 142 UH Anti icing function in other rooms 142 benen HI Indoor unit PCB abnormality 109 AS Freeze up protection control or high pressure control 110 AG Fan motor or related C motor Duct 112 abnormality DC motor Wall 113 CH Heat exchanger temperature thermistor abnormality 115 Ci Front Panel Open Close Fault 116 co Room temperature thermistor abnormality 115 GE AS Anti icing function 117 ESX OL activation compressor overload 119 Da Compressor lock 120 El DC fan lock 121 EB Input over current detection 122 F3 Discharge pipe temperature control 124 F5 High pressure control in cooling 125 U Compressor sensor system abnormality 127 H6 Position sensor abnormality 128 Ha DC voltage DC current sen
29. 8 9 314 m min M 6 7 237 6 9 242 AIDEN Rates cfm L 4 7 166 4 8 169 SL 3 9 138 4 0 141 Type Cross Flow Fan Cross Flow Fan Fan Motor Output Ww 40 40 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto Air Direction Control Right Left Horizontal Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 16 0 18 Power Consumption Rated W 35 40 Power Factor 95 1 96 6 Temperature Control Microcomputer Control Microcomputer Control Dimensions HxWxD mm 283x800x195 283x800x195 Packaged Dimensions HxWxD mm 265x855x340 265x855x340 Weight kg 9 9 Gross Weight kg 12 12 operation H L SL dBA 37 25 22 39 26 23 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Liquid mm 06 4 06 4 Piping Connection Gas mm 09 5 09 5 Drain mm 18 0 18 0 Drawing No 3D049321 3D049322 Duct Connected Type 50Hz 230V Model FDKS25CAVMB FDKS35CAVMB Rated Capacity 2 5kW Class 3 5kW Class Front Panel Color H 9 5 335 10 0 353 m min M 8 8 311 9 3 328 Ae Row Raley cfm L 8 0 282 8 5 300 SL 6 7 237 7 0 247 Type Sirocco Fan Sirocco Fan Fan Motor Output Ww 62 62 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 47 0 47 Power Consumption Rated W 100 100 Power Factor 92 5 92 5 Temperature Control Microcomputer Control Micro
30. 87 Care Care and Cleaning 89 89 Trouble Shooting Trouble Shooting 96 96 Drawing No 3P194550 4C 3P194539 3 Duct Connected Type EENS EE FDXS25 35C CDXS25 35E Read Before Operation Safety Precautions 62 62 62 Names of Parts 67 67 67 Preparation Before Operation xk 70 70 70 Operation AUTO DRY COOL HEAT FAN 73 73 73 Operation Adjusting the Air Flow Direction POWERFUL Operation 77 77 77 OUTDOOR UNIT QUIET Operation 78 78 78 ECONO Operation HOME LEAVE Operation 80 80 80 MOLD PROOF Operation INTELLIGENT EYE Operation TIMER Operation 85 85 85 Note for Multi System 87 87 87 Care Care and Cleaning 92 92 94 Trouble Shooting Trouble Shooting 96 96 96 Drawing No 3P196326 8B 3P196326 7 3P196326 6 3P196326 9B Illustrations are for wall mounted type FTXS25 35E as representative Operation Manual 61 Instruction SIEN12 710A 2 2 Safety Precautions e Keep this manual where the operator can easily find them e Read this manual attentively before starting up the unit e For safety reason the operator must read the following cautions carefully e This manual classifies precautions into WARNINGS and CAUTIONS Be sure to follow all precautions below they are all important for ensuring safety A WARNING A CAUTION If you do not follow these instructions exactly the unit may If you do not follow these instructions exactly the unit may cause property dama
31. Automatic Air Flow Control for Heating Automatic Air Flow Control for Cooling Function and Control The airflow rate can be automatically controlled depending on the difference between the set temperature and the room 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 112 Phase control and fan speed control contains 9 steps LLL LL SL L ML M MH H and HH In automatic operation the step SL is not available FTKS25 35D FTXS25 35E FDKS25 35E FDK X S25 35C CDXS25 35E Step Cooling Heating LLL LL L ML M MH R6037 H R6036 HH Powerful H 50 H 50 O Within this range the airflow rate is automatically controlled when the FAN setting button is set to automatic 1 Fan stops during defrost operation 2 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 On heating mode the indoor fan speed will be regulated according to the indoor heat exchanger temperature and the difference between the room temperature and the required set point The following drawing explains the principle of fan speed control for cooling fan speed M 2 C ML 1 5 C 1 C E 0 5 C Thermostat setting temperature DC motor Rotation speed control AC motor Phase control
32. Capacity 2 5kW Class 3 5kW Class Front Panel Color White White H 8 7 307 9 4 332 8 9 314 9 7 342 m min M 6 7 237 7 6 268 6 9 242 7 9 297 SE REE cfm L 4 7 166 5 8 205 4 8 169 6 0 212 SL 3 9 138 5 0 177 4 0 141 5 2 184 Type Cross Flow Fan Cross Flow Fan Fan Motor Output Ww 40 40 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto Air Direction Control Right Left Horizontal Downward Right Left Horizontal Downward Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 17 0 16 0 15 0 17 0 16 0 15 0 19 0 18 0 17 0 19 0 18 0 17 Power Consumption Rated Ww 35 35 35 35 35 35 40 40 40 40 40 40 Power Factor 93 6 95 1 97 2 93 6 95 1 97 2 95 7 96 6 98 0 95 7 96 6 98 0 Temperature Control Microcomputer Control Microcomputer Control Dimensions HxWxD mm 283x800x195 283x800x195 Packaged Dimensions HxWxD mm 265x855x340 265x855x340 Weight kg 9 9 Gross Weight kg 12 12 Seele H M L SL dBA 37 31 25 22 37 33 28 25 38 32 26 23 38 34 29 26 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Liquid mm 06 4 0 6 4 Piping Connection Gas mm 09 5 09 5 Drain mm 18 0 18 0 Drawing No 3D054406A 3D054407A Duct Connected Type 50Hz 220 230 240V FDXS25CVMA FDXS35CVMA Model S A S 7 Cooling Heating Cooling Heating Rated Capacity 2 5kW Class 3 5kW Class Front Panel Color External Static Pressure Pa 40 40 H 9 5 335 9 5 335 10 0 353 10 0 353 A m min M 8 8 3
33. D FTXS 25 35 E A CAUTION Before cleaning be sure to stop the operation and turn the breaker OFF UNITS B Indoor unit Outdoor unit and Remote control 1 Wipe them with dry soft cloth B Front panel 1 Open the front panel e Hold the panel by the tabs on the two sides and lift it until it stops with a click 2 Remove the front panel e Lift the front panel up slide it slightly to the right and remove it from the horizontal axle 3 Clean the front panel e Wipe it with a soft cloth soaked in water e Only neutral detergent may be used e Incase of washing the front panel with water dry it with cloth dry it up in the shade after washing 4 Attach the front panel e Set the 2 keys of the front panel into the slots and push them in all the way e Close the panel slowly and push the panel at the 3 points 1 on each side and 1 in the middle Fit the key into the slot CAUTION Don t touch the metal parts of the indoor unit If you touch those parts this may cause an injury When removing or attaching the front panel use a robust and stable stool and watch your steps carefully e When removing or attaching the front panel support the panel securely with hand to prevent it from falling e For cleaning do not use hot water above 40 C benzine gasoline thinner nor other volatile oils polishing compound scrubbing brushes nor other hand stuff e After cleaning make sure that the f
34. E E AAA d YY Manufacturer s g ED label R7570 06 4 Flare connection 69 5 Flare i R7571 connection 2 Loosen the 2 screws B The front panel has 4 hooks right left of the top panel and 8 screws to remove the front panel Top panel E The bell mouth can not be removed Discharge grille Front panel R7572 156 Removal Procedure SiEN12 710A Outdoor Unit Step 3 Procedure Loosen the 4 screws Points Loosen the 2 screws of the stop valve cover and remove it and remove the discharge grille SERRA 2 B When reassembling make sure to fit the 4 hooks R7700 E The stop valve cover is united with the shelter IEAA WQ R7699 R7701 B When assembling the stop valve cover make sure to fit the 4 hooks Removal Procedure 157 Outdoor Unit SiEN12 710A 1 2 Removal of the Electrical Box Procedure A Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Disconnect the Fasten the wires with
35. No 04 Conduct the followings to check the electronic expansion valve EV 1 2 Check to see if the EV connector is correctly inserted in the PCB Compare the EV unit and the connector number Turn the power off and back on again and check to see if all the EVs generate latching sound If any of the EVs does not generate latching noise in the above step 2 disconnect that connector and check the continuity using a tester Check the continuity between pins 1 3 and 6 and between pins 2 4 and 5 If there is no conductivity between the pins the EV coil is faulty If no EV generates latching sound in the above step 2 the outdoor unit PCB is faulty If the continuity is confirmed in the above step 3 mount a good coil which generated latching sound in the EV unit that did not generate latching sound and check to see if that EV generates latching sound If latching sound is generated the outdoor unit PCB is faulty If latching sound is not generated the EV unit is faulty H Note Please note that the latching sound varies depending on the valve type 146 Service Diagnosis SiEN12 710A Check Valve Body Condition Symptom Check Method Measure 1 Valve body catches at fully opened or half Reset power supply and conduct cooling opened position operation unit by unit Symptom Cooling W ss mWater leakage at the no operation unit cee SEH Flow noise of refrigerant in the no operation unit Operatio
36. OVERVOLTAGE U4 FAILURE OF TRANSMISSION BETWEEN INDOOR UNIT AND OUTDOOR UNIT INDOOR UNIT A1 INDOOR PCB DEFECTIVENESS A5 HIGH PRESSURE CONTROL OR FREEZE UP PROTECTOR A6 FAN MOTOR FAULT C4 FAULTY HEAT EXCHANGER TEMPERATURE SENSOR c9 FAULTY SUCTION AIR TEMPERATURE SENSOR OUTDOOR UNIT EA COOLING HEATING SWITCHING ERROR E5 OL STARTED E6 FAULTY COMPRESSOR START UP E7 DC FAN MOTOR FAULT E8 OVERCURRENT INPUT F3 HIGH TEMPERATURE DISCHARGE PIPE CONTROL F6 HIGH PRESSURE CONTROL IN COOLING H6 OPERATION HALT DUE TO FAULTY POSITION DETECTION SENSOR H8 DC CURRENT SENSOR FAULT H9 FAULTY SUCTION AIR TEMPERATURE SENSOR J3 FAULTY DISCHARGE PIPE TEMPERATURE SENSOR J6 FAULTY HEAT EXCHANGER TEMPERATURE SENSOR L4 HIGH TEMPERATURE AT INVERTER CIRCUIT HEATSINK L5 OUTPUT OVERCURRENT P4 FAULTY INVERTER CIRCUIT HEATSINK TEMPERATURE SENSOR 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 cancel itself if the button is not pressed for 1 minute Operation Manual 99 Instruction SIEN12 710A 100 Operation Manual SIEN12 710A Service Diagnosis N Part 6 Service Diagnosis Caution for DiaQnoSis ciao 102 Problem Symptoms and Measures cece ee eeeeeeeeeetttaaeeeeeeeeees 104 Service Check UNCON Jc xii ces tios 105 3 1 Check Method eer ee eet 105 32 Check Method 2 nrs ile 106 Troubleshooting EE 108 4 1 Error Codes a
37. 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 78 Operation Manual SiEN12 710A Instruction 2 9 ECONO Operation ECONO operation is a function which enables efficient operation by lowering the maximum power consumption value Sie B To start ECONO operation 1 Press ECONO button e x is displayed on the LCD B To cancel ECONO operation 2 Press ECONO button again e disappears from the LCD ET ooo 1 2 Re En TEMP MODE FAN SWING QUIET a SENSOR Ga CE E for 2sec ke ch TIMER en NOTE ECONO Operation can only be set when the unit is running Pressing the operation stop button causes the settings to be canceled and the x 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 e POWERFUL operation and ECONO operation cannot be used at the same time Priority is given to the function of whichever button is pressed last e Power consumption may not drop even if ECONO operation is used when the level of power consumption is already low Operation Manual 79 Instruction SiEN12 710A 2 10 HOME LEAVE Operation HOME LEAVE operation is a function which allows you
38. SiEN12 710A 5 1 4 Four Way Valve Performance Check Check No 05 148 Turn off the power and turn it on again H Start the heating mode run S80 voltage at DC 220 240 V with compressor on Fig 1 Four way valve coil Cooling dry No continuity Heating Continuity NO Disconnect the four way valve coil from the connector and check the continuity Four way valve coil resistance at 1500 ohms NO gt Replace the outdoor unit PCB Replace the four way valve coil Fig 1 Voltage at S80 DC220 240V Compressor ON Time Replace the four way valve R7156 Service Diagnosis SiEN12 710A Check 5 1 5 Thermistor Resistance Check Check No 06 Service Diagnosis Remove the connectors of the thermistors on 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 R25 C 20kQ B 3950 20 211 0 KQ 15 150 10 116 5 5 88 0 67 2 5 51 9 10 40 15 31 8 20 25 25 20 30 16 35 13 40 10 6 45 8 7 50 7 2 Resistance range R1437 149 Check SiEN12 710A 5 1 6 Installation Condition Check Check No 07 Installati
39. Speed O O Flexibility Multi Split Split Type Compatible Control R Indoor Unit S Q Indoor Unit Quiet Operation O O Night Quiet Mode Automatic Flexible Voltage Correspondence O O Outdoor Unit Quiet Operation Manual High Ceiling Application INTELLIGENT EYE O Chargeless Quick Warming Function Either Side Drain Right or Left O Hot Start Function Power Selection Automatic Defrosting ect o Remote 5 Rooms Centralized Controller olo Operation Automatic Operation SE Option Programme Dry Function Oo Oo Remote Control Adapter Normal olo Fan Only O O Open Pulse Contact Option Lifestyle New POWERFUL Operation Convenience Non Inverter ami Remote Control Adapter Normal Open o o e Contact Option Inverter POWERFUL Operation O O d DIII NET Compatible Adapter Priority Room Setting Option O O Cooling Heating Mode Lock Remote Wireless O O HOME LEAVE Operation po om Wired SE ECONO Mode O Indoor Unit On Off Switch O O Signal Reception Indicator O O Temperature Display Another Room Operation Note O Holding Functions No Functions List of Functions SiEN12 710A Cooli
40. and Control SiEN12 710A Control Specification 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 when frequency changed Control for abnormally high discharge pipe temperature Dew buildup prevention control for Indoor freeze prevention control indoor rotor Gas pipe isothermal control only for heat pump model Liquid pipe temperature control Oil recovery control SC control Fully closed when power is turned ON Y Cooling 1 room operation Open control when starting Control of target discharge pipe temperature Y Cooling 2 rooms operation Control when the operating room is changed Control of target discharge pipe temperature Y Stop Pressure equalizing control Y Heating 1 room operation Open control when starting only for heat pump model Control of target discharge pipe temperature Y Heating 2 rooms operation Control when the operating room is changed only for heat pump model Control of target discharge pipe temperature Defrost control FD 1 only for heat pump model Y Stop Pressure equalizing control Y Heating 1 room operation only for he
41. another appliance move that appliance to some where else or consult the shop Operation Manual Remote control holder e To remove pull it upwards 71 Instruction SiEN12 710A B To set the clock B Turn the breaker ON 1 Press CLOCK button DAIKIN 0 00 is displayed blinks 2 Press TIMER setting button to set the clock to the present time Holding down A or W button rapidly increases or decreases the time display 3 Press CLOCK button blinks a OON OFF e Turning ON the breaker opens the flap then POWERFUL TEMP Co closes it again This is a normal procedure MODE FAN SWNG QUIET MOLD PROOF SENSOR Ga B Ces PUSH for 2sec 2 Ev TIMER REST NOTE 72 Tips for saving energy Be careful not to cool heat the room too much Keeping the temperature setting at a moderate level helps save energy Cover windows with a blind or a curtain Blocking sunlight and air from outdoors increases the cooling heating effect Clogged air filters cause inefficient operation and waste energy Clean them once in about every two weeks Please note The air conditioner always consumes 15 35 watts of electricity even while it is not operating If you are not going to use the air conditioner for a long period for example in spring or autumn turn the breaker OFF Use the air conditioner in the following conditions Recommen
42. cleaning dry them in the shade 3 Replacing the air filter Rear suction Hook the filter behind the flap situated at the top of the unit and push the other side gently over the bends Bottom suction Hook the filter behind the flap situated at the middle of the unit and push the other side gently over the bends Main unit gt Y in A7 Attach the filter to the HI main unit while Filter pushing down on the In case of back side In case of bottom side Operation Manual SIEN12 710A Instruction B Cleaning the drain pan e Clean the drain pan periodically or drain piping may be clogged with dust and may result in water leakage Ask your DAIKIN dealer to clean them e Prepare a cover locally to prevent any dust in the air around the indoor unit from getting in the drain pan if there is a great deal of dust present CAUTION Do not operate the air conditioner without filters this to avoid dust accumulation inside the unit Donot remove the air filter except when cleaning Unnecessary handling may damage the filter Do not use gasoline benzene thinner polishing powder liquid insecticide It may cause discoloring or warping e Do not let the indoor unit get wet It may cause an electric shock or a fire e Operation with dusty air filters lowers the cooling and heating capacity and wastes energy e The suction grille is option Do not use water or air of 50 C or
43. clock to the present time 1 Press ON TIMER button 6 00 is displayed 0 blinks 2 Press TIMER Setting 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 The TIMER lamp lights up B To cancel the ON TIMER operation 4 Press CANCEL button e The TIMER lamp goes off B To combine ON TIMER and OFF TIMER raal Co POWERFUL TEMP MODE FAN Gap QUIET MOLD PROOF SENSOR C C PUSH for 2sec A sample setting for combining the two timers is shown below Example Present time 11 00 p m The unit operating OFF TIMER at 0 00 a m ON TIMER at 7 00 a m ATTENTION B In de following cases set the timer again e After a breaker has turned OFF e After a power failure e After replacing batteries in the remote control 86 Combined Operation Manual SIEN12 710A Instruction 2 14 Note for Multi System lt lt What is a Multi System gt gt This system has one outdoor unit connected to multiple indoor units B Selecting the Operation Mode 1 With the Priority Room Setting present but inactive or not present 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 tur
44. condition Continuous run for about 11 minutes normal B The system will be shut down if the error occurs 16 times Supposed B Compressor relay cable disconnected Causes B Compressor itself defective B Outdoor unit PCB defective B Stop valve closed B Input voltage out of specification 128 Service Diagnosis SiEN12 710A Troubleshooting Ge Check a Refer to P 151 Check No 13 Refer to P 153 Service Diagnosis AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check the power supply Check the discharge pressure Check No 08 Abnormal gt Replace the stop valve Normal Check No 13 Check for short circuit NO Replace the outdoor unit PCB outdoor unit fan Replace the four way valve YES coil Check the electrolytic capacitor voltage NO Replace the outdoor unit PCB Electricals or compressor harnesses connected as specified NO gt Reconnect as specified Turn off the power Disconnect the harnesses U V and W Inverter checker Check with the inverter checker Part No 1225477 gt Correct the power supply or replace the outdoor unit PCB gt Replace the compressor R7144 129 Troubleshooting SIEN12 710A 4 16 DC Voltage DC Current Sensor Abnormality Remote Control Display Method of Malfun
45. 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 the cooling operation if the heat exchanger temperature in the room where operation is halted becomes 1 C or if the room temperature heat exchanger in the room where operation is halted becomes 210 C it is assumed as icing 41 Control Specification SiEN12 710A 2 Control Specification 2 1 Mode Hierarchy Outline There are two modes the mode selected in user s place normal air conditioning mode and forced operation mode for installation and providing service Detail 1 For heat pump model There are following modes stop cooling includes drying heating include defrosting Air conditioner control mode Forced operating mode L 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 L_ Stop R2829 2 For cooling only model There are following models stop and cooling including drying Air conditioner control mode Forced operating mode Forced cooling for Pump Down Operation Normal operating mode Cooling L_ Stop mode except for cooling modes by
46. 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 E Do not have any foreign object such as solder or paper waste between the power transistor the diode bridge and the heat radiation fin B 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 lt Example gt Diode bridge Diode bridge Rectifier stack etc Take out a PCB Power transistor TRM TPM IGBT IPM SPM etc Not applied Paper wastage OK Evenly applied NG Not evenly NG Foreign object silicon grease applied Fri ooh 182 Others SIEN12 710A Part 9 Appendix 1 Piping DiEGtAMS rn eenden 184 Wie Indoor UnItS nrs enaar edelen aandere E 184
47. going to bed comfortable level while you sleep right Disengaging HOME LEAVE Operation will return the temperature to that set for normal operation Even the coldest winters will pose no problem 2 Use as a favorite mode Once you record the temperature and air flow rate settings you most often use you can retrieve them by pressing HOME LEAVE button You do not have to go through troublesome remote control operations NOTE e Once the temperature and air flow rate for HOME LEAVE operation are set those settings will be used whenever HOME LEAVE operation is used in the future To change these settings please refer to the Before using HOME LEAVE operation section above e HOME LEAVE operation is only available in COOL and HEAT mode Cannot be used in AUTO DRY and FAN mode e HOME LEAVE operation runs in accordance with the previous operation mode COOL or HEAT before using HOME LEAVE operation e HOME LEAVE operation and POWERFUL operation cannot be used at the same time Last button that was pressed has priority The operation mode cannot be changed while HOME LEAVE operation is being used e When operation is shut off during HOME LEAVE operation using the remote control or the indoor unit ON OFF switch e will remain on the remote control display Operation Manual 81 Instruction SIEN12 710A 2 11 MOLD PROOF Operation MOLD PROOF operation is a function which reduces the spread of mold by using Fan mode to
48. in the provision of products that have limited impact on the environment This challenge demands the eco design and development of a wide range of products and an energy management system resulting in energy conservation and a reduction of waste In all of us a green heart DAIKIN EUROPE N V Naamloze Vennootschap Zandvoordestraat 300 B 8400 Oostende Belgium www daikin eu BTW BE 0412 120 336 RPR Oostende Daikin Europe N V is approved by LRQA for its Quality Management System in accordance with the ISO9001 standard ISO9001 pertains to quality assurance regarding design development manufacturing as well as to services related to the product IS014001 assures an effective environmental management system in order to help protect human health and the environment from the potential impact of our activities products and services and to assist in maintaining and improving the quality of the environment Daikin units comply with the European regulations that guarantee the safety of the product eh Daikin Europe N V is participating in the EUROVENT Certification Programme Products are as listed in the EUROVENT Directory of Certified Products The present publication is drawn up by way of information only and does not constitute an offer binding upon Daikin Europe N V Daikin Europe N V has compiled the content of this publication to the best of its knowledge No express or implied warranty is given for the comp
49. indoor command Preheat operation During C capacitor is discharging Stop R2830 H Note Unless specified otherwise an indoor dry operation command must be regarded as cooling operation Determine Operating Mode Judge the operating mode command set by each room in accordance with the instructing procedure and determine the operating mode of the system The following procedure will be taken as the modes conflict with each other B The system will follow the mode determined first First push first set B For the rooms set with different mode select stand by mode Operation lamp flashes Command of the Command of the Operation of the Operation of the first set room second set room first set room second set room Cooling Heating Cooling Stand by Cooling Fan Cooling Fan Heating Cooling Heating Stand by Heating Fan Heating Stand by Fan Cooling Fan Cooling Fan Heating Stand by Heating 42 Function and Control SiEN12 710A Control Specification 2 2 Frequency Control Outline Frequency that corresponds to each room s capacity will be determined according to the difference in the temperature of each room and the temperature that is set by the remote control The function is explained as follows 1 How to determine frequency 2 Frequency command from an indoor unit The difference between a room temperature and the temperature set by the remote control
50. long idle period 1 Operate the FAN only for several hours on a fine day to dry out the inside e Press MODE selector button and select FAN operation e Press ON OFF button and start operation 2 After operation stops turn off the breaker for the room air conditioner Clean the air filters and set them again 4 Take out batteries from the remote control Gei e When a multi outdoor unit is connected make sure the heating operation is not used at the other room before you use the fan operation Operation Manual 91 Instruction SIEN12 710A FDK X S 25 35 C FDKS 25 35 E AN CAUTION only a qualified service person is allowed to perform maintenance Before cleaning be sure to stop the operation and turn the breaker OFF B Cleaning the air filter 1 Removing the air filter e Rear suction Pull the bottom side of the air filter backwards over the 3 bends e Bottom suction Pull the filter over the 3 bends situated at the backside of the unit 2 Cleaning the air filter Remove dust from the air filter using a vacuum cleaner and gently rinse them in cool water Do not use detergent or hot water to avoid filter shrinking or deformation After cleaning dry them in the shade 3 Replacing the air filter e Rear suction Hook the filter behind the flap situated at the top of the unit and push the other side gently over the 3 bends e Bottom suction Hook the filter behind the flap situate
51. lower the humidity inside the indoor unit B To start MOLD PROOF operation 1 Press and hold the MOLD PROOF button for two seconds e is displayed on the LCD B To cancel MOLD PROOF operation 2 Press and hold the MOLD PROOF button for two seconds one more time a disappears from the LCD ECONO OONOFF S Y NA ee MODE FAN SWING QUIET raat PUSH for 2sec 1 2 ed Ee OFF m Ev TIMER RET NOTE e MOLD PROOF operation will operate for approximately one hour after dry or cooling mode is turned off e This function is not designed to remove existing dust or mold e MOLD PROOF operation is not available when the unit is turned off using the OFF TIMER 82 Operation Manual SIEN12 710A Instruction 2 12 INTELLIGENT EYE Operation INTELLIGENT EYE is the infrared sensor which detects the human movement B To start INTELLIGENT EYE operation 1 Press SENSOR button e 2 is displayed on the LCD B To cancel the INTELLIGENT EYE operation 2 Press SENSOR button again disappears from the LCD EX When somebody in the room e Normal operation POWERFUL TEMP MODE FAN SWNG QUIET MOLD PROOF SENSOR 10 Ge 1 2 PUSH for 2sec F el Ee OFF J me Ev TIMER RST When nobody in the room e 20 min after start energy saving operation Somebody back in the room Back to nor
52. m 30 for Total of Each Room Max Int it P Length Seay Naan eae ee m 20 for One Room Min Interunit Piping Length m 3 for One Room Amount of Additional Charge g m 20 20m or more 15 bet Indoor Unit and Outdoor Unit Max Installation Height Difference EEN J oor Unit m 7 5 between Indoor Units Drawing No 3D057667 Conversion Formulae Note 1 The data are based on the conditions shown in the table below kcal h kWx860 Cooling Heating Piping Length Btu h kWx3414 Indoor 27 CDB 19 CWB Outdoor 35 CDB Indoor 20 CDB 5 Outdoor 7 CDB 6 CWB m Specifications cfm m minx35 3 13 Heat Pump SIEN12 710A 14 Specifications SIEN12 710A Part 3 Printed Circuit Board Connector Wiring Diagram 1 Printed Circuit Board Connector Wiring Diagram 16 1 1 Wall Mounted Type cit eege eege 16 1 2 Duct Connected Re anda tanden Bennen tues 18 1 3 Outdoor Unilever terr eed ie 20 Printed Circuit Board Connector Wiring Diagram 15 Printed Circuit Board Connector Wiring Diagram SiEN12 710A 1 Printed Circuit Board Connector Wiring Diagram 1 1 Wall Mounted Type Connectors PCB 1 Control PCB 1 Si Connector for fan motor 2 S6 Connector for swing motor horizontal blades 3 S21 Connector for centralized control HA 4 S26 Connector for display PCB 5 S28 Connector for signal receiver PCB 6 32 Connector for heat exchanger thermistor 7 35 Connector for INTELLIGENT EYE sen
53. may be Be careful when adjusting the louvers Inside the air outlet a fan is rotating at a high speed In DRY mode or COOL mode When stop Operation lt Upper limit 50 Lower limit In HEAT mode When stop operation sy 30 Upper limit lt lt D 65 Lower limit In FAN mode When stop operation Telg Upper limit 70 ZC Lower limit Operation Manual SIEN12 710A Instruction 2 7 POWERFUL Operation POWERFUL operation quickly maximizes the cooling heating effect in any operation mode You can get the maximum capacity dan B To start POWERFUL operation 1 Press POWERFUL button e POWERFUL operation ends in 20 minutes Then the system automatically operates again with the settings which were used before POWERFUL operation e When using POWERFUL operation sono there are some functions which are not an pue ON OFF ES POWERFUL TEMP esa is displayed on the LCD ER m To cancel POWERFUL operation ipe 2 Press POWERFUL button again MODE FAN Gau e ess disappears from the LCD ecn Zei Cry PUSH for 2sec LON CANCEL g CER TIMER w i NOTE H Note on POWERFUL operation e POWERFUL Operation cannot be used together with ECONO or QUIET 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 sett
54. mode has priority 102 Service Diagnosis SiEN12 710A Caution for Diagnosis Troubleshooting Outdoor Unit with the LED eer There is a green LED on the PCB The flashing green LED indicates normal equipment Indication condition Troubleshooting with the green LED The LED A of the outdoor unit indicate microcomputer operation condition Even after the error is cancelled and the equipment operates in normal condition the LED indication remains See page 21 for detail of LED A Service Diagnosis 103 Problem Symptoms and Measures SiEN12 710A 2 Problem Symptoms and Measures Vibrations power transistor Symptom Check Item Details of Measure Reference Page None of the Units Check the power supply Check to make sure that the rated voltage is Operates supplied Check the type of the indoor units Check to make sure that the indoor unit type is compatible with the outdoor unit Check the outdoor air temperature Heating operation cannot be used when the outdoor air temperature is 15 5 C or higher only for heat pump model and cooling operation cannot be used when the outdoor air temperature is below 10 C Diagnosis with remote control 108 indication Check the remote control Check to make sure that address settings for addresses the remote control and indoor unit are correct Operation Sometimes Check the power supply A power failure of 2
55. of the unit amp Water may penetrate into the unit and degrade electrical insulations resulting in an electric shock Installation site To install the air conditioner in the following types of environments consult the dealer e Places with an oily ambient or where steam or soot occurs e Salty environment such as coastal areas e Places where sulfide gas occurs such as hot springs e Places where snow may block the outdoor unit The drain from the outdoor unit must be discharged to a place of good drainage Consider nuisance to your neighbours from noises E For installation choose a place as described below A place solid enough to bear the weight of the unit which does not amplify the operation noise or vibration e Aplace from where the air discharged from the outdoor unit or the operation noise will not annoy your neighbours Electrical work e For power supply be sure to use a separate power circuit dedicated to the air conditioner System relocation e Relocating the air conditioner requires specialized knowledge and skills Please consult the dealer if relocation is necessary for moving or remodeling Operation Manual 63 Instruction SIEN12 710A 2 3 Names of Parts FTKS 25 35 D FTXS 25 35 E B Indoor unit 13 E US Uu ON OFF Seele fe 64 Operation Manual Instruction Operation Manual B Outdoor u
56. on the room temperature Use the remote control for trial operation as described below H After trial operation is complete set the temperature to a normal level 26 C to 28 C B For protection the machine disables restart operation for 3 minutes after it is turned off Trial Operation and Testing 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 E If 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 from Remote Controller 1 Press ON OFF button to turn on the system 2 Simultaneously press center of TEMP button and MODE buttons 3 Press MODE button twice EP will appear on the display to indicate that Trial Operation mode is selected 4 Trial run mode terminates in approx 30 minutes and switches into normal mode To quit a trial operation press ON OFF button 3 1 4 R4294 180 Others SiEN
57. 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 OP ee Oa Introduction SiEN12 710A vi A Warning Be sure to wear a safety helmet gloves and a safety belt when working at a high place more than 2m Insufficient safety measures may cause a fall accident In case of R410A refrigerant models be sure to use pipes flare nuts and tools for the exclusive use of the R410A refrigerant The use of materials for R22 refrigerant models may cause a serious accident such as a damage of refrigerant cycle as well as an equipment failure A Caution 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 splashin
58. restored Note It takes 3 minutes to restart the operation because the 3 minute standby function is activated 38 Function and Control SiEN12 710A Main Functions 1 13 Function of Thermistor 1 13 1 Heat Pump Model A Outdoor Heat Exchanger Thermistor B Discharge Pipe Thermistor C Gas Pipe Thermistor Function and Control Expansion valve Four way valve c R704 Compressor ae The outdoor heat exchanger thermistor is used for controlling target discharge temperature The system sets a target discharge temperature according to the outdoor and indoor heat exchanger temperature and controls the electronic expansion valve opening so that the target discharge temperature can be obtained The outdoor heat exchanger thermistor is used for detecting disconnection of the discharge thermistor when cooling When the discharge pipe temperature becomes lower than the outdoor heat exchanger temperature the discharge pipe thermistor is judged as disconnected The outdoor heat exchanger thermistor is used for high pressure protection during cooling operation The discharge pipe thermistor is used for controlling temperature of the discharge pipe 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 The discharge pipe thermistor is used for detecting disconnection of the discharge therm
59. rotate smoothly Replace fan motor and outdoor unit PCB Precaution before turning on the power again Make sure the power has been off for at least 30 seconds YES Turn on the power again System restarted Disturbance factors x Noise Power supply distortion Check for such factors for a long term Try to get restarted a NO couple of times Repeat a couple of times gt Replace the outdoor unit PCB R7150 141 Troubleshooting SiEN12 710A 4 23 Anti icing Function in Other Rooms Unspecified Voltage between Indoor and Outdoor Units Remote Control Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting 142 UA Un A wrong connection is detected by checking the combination of indoor and outdoor units on the microcomputer B Operation halt due to the anti icing function in other rooms B Operation halt due to unspecified voltage between indoor and outdoor units B Operation halt due to the anti icing function in other rooms B Wrong connections at the indoor unit H PCB wrongly connected AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred E _ Error gt NO displaying air conditioner gt The anti icing function is running activated in other rooms Refer to A5 i YES NO Supply voltage as
60. seconds The code display also cancels itself if the button is not pressed for 1 minute Service Diagnosis 105 Service Check Function SIEN12 710A 3 2 Check Method 2 1 Enter the diagnosis mode Press the 3 buttons TEMPA TEMPW MODE simultaneously R4272 The digit of the number of tens blinks X Try again from the start when the digit does not blink DAIKIN R4273 2 Press the TEMP button Press TEMPA or TEMP Y and change the digit until you hear the sound of beep or pi pi R4274 3 Diagnose by the sound pi The number of tens does not accord with the error code pi pi The number of tens accords with the error code beep The both numbers of tens and units accord with the error code See 7 4 Enter the diagnosis mode again Press the MODE button mmm a OONIOFF C y C ad Ne A Xx Ss R4275 The digit of the number of units blinks DAIKIN R4276 106 Service Diagnosis SIEN12 710A Service Check Function 5 Press the TEMP button Press TEMPA or TEMP WV and change the digit until you hear the sound of beep MODE CJC LA EE R4277 6 Diagnose by the sound pi The both numbers of tens and units do not accord with the error code pi pi The number of tens accords with the error code beep The both numbers of tens and units accord with the error code
61. specified gt Correct YES Check the model number NO gt Reconnect YES Check the combination of all the models being connected R7151 Service Diagnosis SIEN12 710A Troubleshooting 4 24 Outdoor Unit PCB Abnormality or Signal Transmission Circuit Abnormality UY Remote Control Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Service Diagnosis Detect within the programme of the microcomputer that the programme is operating normally When indoor outdoor unit signal transmission can not be performed for more than 15 sec Detection of the presence or absence of zero cross signal When the programme of the microcomputer is in bad running order When indoor outdoor unit signal transmission can not be performed for more than 15 sec When zero cross signal can not be detected for more than 10 sec Display disabled due to power supply fault Communication circuit fault in outdoor unit PCB Out of control of microcomputer caused by external factors Noise Momentary voltage drop Momentary power loss Defective outdoor unit PCB Defective thermal fuse in outdoor terminal board 143 Troubleshooting SiEN12 710A Troubleshooting AN 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 comunication circuit fault may b
62. system shall be down as the system abnormality 2 13 Forced Operation Mode Outline Detail Function and Control Forced operating mode includes only forced cooling Forced Cooling Item Forced Cooling Forced operation allowing conditions 1 The indoor unit is not abnormal but the indoor unit which is not in the freezing prohibiting zone is present in more than 1 room 2 The outdoor unit is not abnormal and not in the 3 minute stand by mode The forced operation is allowed when the above and conditions are met Starting adjustment When the indoor unit on off button is pressed for continuous 5 second as the above conditions are met 1 Determine operating room All rooms must operate 2 Command frequency 3 Electronic expansion 70Hz 40 class 47Hz 50 class It depends on the capacity of the operating indoor unit 4 Outdoor unit adjustment valve opening 5 Indoor unit adjustment Compressor is in operation The command of forced cooling operation is transmitted to all indoor units End 1 When the indoor units on off button of the unit which sent the command is pressed again 2 The operation is to end automatically after 15 min Others The protect functions are prior to all others in the forced operation 57 Control Specification SiEN12 710A 2 14 Additional Function 2 14 1 POWERFUL Operation Mode Compressor opera
63. the air conditioner The heat pump system heats the room by circulating hot air around all parts of the room After the start of heating operation it takes some time before the room gets warmer e In 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 e During defrosting operation hot air does not flow out of indoor unit Note on COOL operation e This air conditioner cools the room by blowing the hot air in the room outside so if the outside temperature is high performance drops Note on DRY operation e The computer chip works to rid the room of humidity while maintaining the temperature as much as possible It automatically controls temperature and fan strength so manual adjustment of these functions is unavailable Note on AUTO operation e In AUTO operation the system selects 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 e If you do not like AUTO operation you can manually select the operation mode and setting you like Note on air flow rate setting e At smaller air flow rates the cooling heating effect is also smaller Operation Manual SIEN12 710A Instruction 2 6 Adjusting the Air Flow Direction FTKS 25 35 D FTXS 25 35 E
64. the outdoor temperature is very high the outdoor fan starts rotating for system protection The operation stopped suddenly OPERATION lamp is on For system protection the air conditioner may stop operating on a sudden large voltage fluctuation It automatically resumes operation in about 3 minutes 96 Operation Manual SiEN12 710A Instruction Check again Please check again before calling a repair person Case Check The air conditioner does not operate OPERATION lamp is off Hasn t a breaker turned OFF or a fuse blown Isn t it a power failure Are batteries set in the remote control Is the timer setting correct Cooling Heating effect is poor Are the air filters clean Is there anything to block the air inlet or the outlet of the indoor and the outdoor units Is the temperature setting appropriate Are the windows and doors closed Are the air flow rate and the air direction set appropriately Is the unit set to the INTELLIGENT EYE mode Operation stops suddenly OPERATION lamp flashes Are the air filters clean Is there anything to block the air inlet or the outlet of the indoor and the outdoor units Clean the air filters or take all obstacles away and turn the breaker OFF Then turn it ON again and try operating the air conditioner with the remote control If the lamp still flashes call the service shop where you bought the air conditioner Are operation
65. 11 8 8 311 9 3 328 9 3 328 ye low Reales cfm L 8 0 282 8 0 282 8 5 300 8 5 300 SL 6 7 237 6 7 237 7 0 247 7 0 247 Type Sirocco Fan Sirocco Fan Fan Motor Output Ww 62 62 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0 49 0 47 0 45 0 49 0 47 0 45 0 49 0 47 0 45 0 49 0 47 0 45 Power Consumption Rated Ww 100 100 100 100 100 100 100 100 100 100 100 100 Power Factor 92 8 92 5 92 6 92 8 92 5 92 6 92 8 92 5 92 6 92 8 92 5 92 6 Temperature Control Microcomputer Control Microcomputer Control Dimensions HxWxD mm 200x900x620 200x900x620 Packaged Dimensions HxWxD mm 266x1 106x751 266x1 106x751 Weight kg 25 25 Gross Weight kg 31 31 SE H MIL SL dBA 35 33 31 29 35 33 31 29 35 33 31 29 35 33 31 29 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Liquid mm 06 4 6 4 Piping Connection Gas mm 09 5 09 5 Drain mm VP20 O D 26 I D 20 VP20 O D 26 1 D 20 Drawing No 3D055393B 3D055394B Note 1 The operating sound is based on the rear side suction inlet and the external static pressure 40 Pa Conversion Formulae Operating sound for under side suction inlet operating sound for rear side suction inlet 5 dB However when installation to which the external static pressure becomes low is carried out 5 dB or more may go up Specifications kcal h kWx860 Btu h kWx3414 cim m minx35 3
66. 119 Troubleshooting SiEN12 710A 4 9 Compressor Lock Remote Control Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting H Note 120 Eb Judging from current waveform generated when high frequency voltage is applied to the compressor The system will be shut down if the error occurs 16 times Clearing condition Continuous run for about 11 minutes normal B Compressor locked Disconnection of compressor harness AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Precaution before turning on the power again Make sure the power has been off for at least 30 seconds Turn off the power Disconnect the harnesses U V and W Y Check with the inverter checker NO Inverter checker Part No 1225477 YES Turn off the power and reconnect the harnesses Turn on the power again and get the system restarted Emergency E YES stop without compressor gt Correct the power supply or replace the SPM Replace the outdoor unit PCB running System shut NO gt Replace the compressor down after errors repeated several times gt Check the electronic expansion valve Replace it as required If the model does not have SPM replace the outdoor unit PCB gt Replace the co
67. 12 710A Others 1 2 Jumper Settings 1 2 1 When Two Units are Installed in One Room When two indoor units are installed in one room the two infrared remote controls can be set for different addresses How to set the different addresses EB Control PCB of the indoor unit 1 2 3 4 we o Remove the front panel Remove the sensor parts cover 2 screws then remove the electric parts box 1 screw Slide the metallic cover to remove it 4 claws on the electric parts box Cut the jumper JA on PCB B Infrared remote control 1 Slide the front cover and take it off 2 Cut the address jumper J4 A J4 ADDRESS EXIST 1 NS CUT 2 1 2 2 Jumper Setting JA ADDRESS lt 83 EA 5 no 5 R4417 R4418 Jumper Function When connected When cut On indoor control PCB factory set JC Power failure Auto restart Unit does not resume operation recovery function after recovering from a power failure Timer ON OFF settings are cleared JB Fan speed setting Fan speed setting Fan rpm is set to 0 when compressor is Remote control lt Fan stop gt OFF on thermostat effective only at cooling operation setting Others 181 Others SiEN12 710A 1 3 Application of Silicon Grease to a Power Transistor and a Diode Bridge Applicable All outdoor units using inverter type compressor
68. 132 heat exchanger temperature thermistor 115 indoor heat exchanger thermistor 40 41 liquid pipe thermistor nnn 40 132 outdoor heat exchanger thermistor 39 41 outdoor temperature thermistor 132 outdoor unit heat exchanger thermistor 132 radiation fin thermistor nn 132 room temperature thermistor 115 thermistor or related abnormality indoor unit 115 thermistor or related abnormality outdoor unit 131 thermistor resistance check 149 thermostat control _ eene eneen 30 TIMER operation 85 titanium apatite photocatalytic air purifying filter 37 troubleshooting nennen vennen eeen 96 troubleshooting with the LED indication 103 turning speed pulse input on the outdoor unit PCB Ehe cts ariba 154 U RE 139 UK 141 UA anneke E ere ae al dte 143 UA instead reteset au Servs eee 142 ST 142 unspecified voltage between indoor and outdoor units nennen eneen 142 Vv VA ao biked eere shcceatebteeeidaat cece 16 18 20 KEE 20 VE 20 VISO tii diia 16 18 20 voltage detection function 58 WwW wide angle louvers nnn eneen eenen 26 wiring diagrams nnen ennen nennen 186 mi SiEN12 710A Index SIEN12 710A Drawings amp Flow Charts A anti icing function in other rooms unspecified voltage between indoor and outdoor units 142 ARCASS ee ic rico 105 automatic air flow Control _ nn
69. 2 Remove the liquid gas pipe thermistor 1 Remove the liquid gas pipe thermistor R7633 Removal Procedure 173 Outdoor Unit SiEN12 710A Step Procedure Points 2 Cut off the clamp A Ss R7634 3 Open the putty and remove the each thermistor S91 Gas pipe thermistor Room A Black Room B Gray S92 Liquid pipe thermistor Room A Black Room B Gray The figure shows the arrangement of the assembly of the liquid gas thermistor CE Thermistor Liquid Room A Thermistor Gas Room B Thermistor Gas Room B R7635 R7636 B Meet the edge of the thermistor and the clip 174 Removal Procedure SiEN12 710A Outdoor Unit 1 7 Removal of the Compressor Procedure A 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 m Be careful so as not to burn cover Disconnect the flag shaped terminals Detach the terminals by long nose pliers Undo the hooks by a flat screwdriver to remove the overheating protector Detach the overload protector Terminal cover teg Jul AS UN AA In i tl Tm Jg R7637 NOR Ne SC 0 R7640 the compressor term
70. 25DVMT CDXS50EV2C CDXS35DVMT FDXS50CVMA CDKS25DVMT FDXS60CVMA CDKS35DVMT FDXS25CAVMB FDXS35CAVMB FDKS25CAVMB FDKS35CAVMB CDXS25EA CDXS35EAVMA CDKS25EAVMA CDKS35EAVMA Sea CDKS25EAVMT 4D045449J CDKS35EAVMT CDXS25EV2C CDXS35EV2C FDXS25CVMA 184 Appendix SiEN12 710A Piping Diagrams 1 2 Outdoor Units 2MKS40FV1B OUTDOOR UNIT OUTDOOR TEMPERATURE en THERMISTOR MOTOR OPERATED VALVE gl ER LIQUID PIPE LIQUIDLINE PIPE _7 0CuT HEAT EXCHANGER C7 ue MUFFLER THERMISTOR STOP VALVE B4CUIS ACUTE 6 4CuT E 364CuT L ROOMA 70CuT BRANCH TP 6 4 CuT 6 4CuT PIPE FIELD WEARER MOTOR OPERATED VALVE MUFFLER LIQUID PIPE LIQUID LINE PIPING WITH Eva FILTER MUFFLER THERMISTOR STOP VALVE LIQUID BRANCH BO ECU _1__ROOMB ld 4 8CuT TT 6 4 CuT THERMISTOR 4 8CuT FAN MOTOR E 9 5CuT PROPELLER FAN GAS LINE GAS PIPE STOP VALVE cul UFER THERMISTOR di 9 5CuT O 5Cu E 9 5CuT ROOMA Be Qe MUFFLER pee GAS LINE SHO FIELD 9 5CuT A 9 5CuT ign GAS PIPE STOP VALVE PI
71. 4 7 V1 V3 V4 Connector for electronic expansion valve coil A port Connector for electronic expansion valve coil B port Connector for overload protector Connector for terminal strip Connector for fan motor Connector for four way valve coil Connector for thermistor outdoor air condenser and discharge pipe Connector for thermistor gas pipe Connector for thermistor liquid pipe Service Monitor LED Green Fuse 3 15A 250V Fuse 20A 250V Diode bridge Jumper for ECONO mode prohibition setting Refer to installation manual Jumper for maximum power input limitation Refer to installation manual Varistor PCB 1 Control PCB 40 class FU1 FU2 DB2 J S21 S20 S91 S90 S92 S40 S70 S45 J3 JA 2P190760 Printed Circuit Board Connector Wiring Diagram SiEN12 710A Printed Circuit Board Connector Wiring Diagram PCB 1 Control PCB 50 class FU DB2 DB1
72. 4 C 15 C ZEN PI control S A OHz 60sec 120sec 530 sec 30sec La zl E ON Compressor OFF ON Four way valve OFF 5sec 5sec ON Fan OFF 120sec Operating room 450pls 40 class 350pls 350pls 450pls AISCironie expansi n 50 class 300pls Initial opening valve opening Operation stopped room S 140pls 40 class 160pls electroni expansion 50 class 200pls Initial opening valve opening Opls R7163 51 Control Specification SiEN12 710A 2 11 Electronic Expansion Valve Control Outline 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 turning on the power 2 Pressure equalizing control Room Distribution Control 1 Gas pipe isothermal control 2 SC control Only for Heat Pump Model Open Control Electronic expansion valve control when starting operation Control when frequency changed Control for defrosting only for heat pump model Oil recover control Control when a discharge pipe temperature is abnormally high Control when the discharge pipe thermistor is disconnected Control for indoor unit freeze up protection ROA IS Feedback Control 1 Discharge pipe temperature control Distribution control for each room 1 Liquid pipe temperature control with all ports connected and all rooms being air conditioned 2 Dew prevention function for indoor rotor 52 Function
73. B Detach the four way valve coil and the 2 clamps and then detach the wire harnesses Removal Procedure 177 Outdoor Unit SiEN12 710A Step Procedure Points Before working make sure that the refrigerant is empty in the circuit Be sure to apply nitrogen replacement when heating up the brazed part 178 Provide a protective sheet or a steel plate so that the brazing flame cannat influence peripheries around the four way valve A Warning Since it may happen that refrigeration oil in the compressor will catch fire prepare wet cloth so as to extinguish fire immediately A Warning Ventilate when refrigerant leaks during the work If refrigerant contacts fire it will cause to arise toxic gas A 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 Cut off the brazed part with pliers and disconnect R7650 R7651 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 E In pulling the pipes be careful not to over
74. CB 109 Troubleshooting SiEN12 710A 4 3 Freeze up Protection Control or High Pressure Control Remote Control AS Display Method of B High pressure control heat pump model only 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 The 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 High pressure 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 Operation halt due to short circuit Detection error due to faulty indoor unit heat exchanger thermistor Detection error due to faulty indoor unit PCB 110 Service Diagnosis SiEN12 710A Troubleshooting Troubleshooting AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check No 06 Check the air passage Is there any short circuit YES Refer to P 149 Provide sufficient ai
75. D CONTROL TRANSMISSION CAUTION 6 3 1 NOTE THAT OPERATION WILL otto sofoooo0 CIRCUIT S1W od Ho s1 RESTART AUTOMATICALLY IF oHHHo THE MAIN POWER SUPPLY IS oO O SIGNAL 10 odolo s7 RED BLK EE ee rad AND THEN BACK RECEIVER 10 cry wwe 1 2RTH14 2 S32 4 o e i alo Jeu HIP H3P PILOT LAMP e ej MIF FAN MOTOR WHT A S D BRN BRN _PCB1 PCB2 PRINTED CIRCUIT BOARD W i LH Ai 7 QiM THERMAL PROTECTOR M1F EMBEDDED RIT Lon PPL q1 Q1M RIT R2T THERMISTOR indoor ze 130 C S1 S32 RTH1 CONNECTOR R2T BLU MIE Saw A A EEN A OPERATION SWITCH VITR PHASE CONTROL CIRCUIT INFRARED PROTECTIVE EARTH X1M TERMINAL BLOCK REMOTE C1 CAPACITOR M1F CONTROL Z1C NOISE FILTER FERRITE CORE F1U FUSE 3D045012K 186 Appendix SiEN12 710A Wiring Diagrams 2 2 Outdoor Units 2MKS40FV1B 1 2 OR ia HR1 HR2 e eSA PCB1 MRM20 C100 S B HL1 FU3 204 V4 S45 A S92RED S91WHT S20WHT S21RED 6 6 W a ROOM A ROOM A OUTDOOR DISCHARGE M1F cs ROOM B ROOM B ROOM A ROOM B CONDENSER aiL LIQUID PIPE GAS PIPE
76. EYE O Chargeless Quick Warming Function Either Side Drain Right or Left O Hot Start Function Power Selection Automatic Defrosting SC e Remote 5 Rooms Centralized Controller olo Operation Automatic Operation een Option Programme Dry Function O o Remote Control Adapter Normal olo Fan Only O O Open Pulse Contact Option Lifestyle New POWERFUL Operation Convenience Non Inverter gt Remote Control Adapter Normal Open O o Contact Option Inverter POWERFUL Operation O O Priority Room Setting Get Compatible Adapter O O Cooling Heating Mode Lock Remote Wireless O O HOME LEAVE Operation leen HESE Wired Pa a ECONO Mode O Indoor Unit On Off Switch O O Signal Reception Indicator O O Temperature Display Another Room Operation Note O Holding Functions No Functions List of Functions SiEN12 710A Heat Pump lt lt S me ide g Category Functions 8 Ee Category Functions 8 Ee x lt x x x SS a Basic Inverter with Inverter Power Control O O Health A Function ae 10 Clean Air Purifying Filter Operation Limit for Cooling CDB e Operation Limit for Heating CWB a Photocatalytic Deodo
77. Fan EOC aars anakan daan E 121 4 11 Input Over Current Detection nnee eeeenenennennennnennnen 122 4 12 Discharge Pipe Temperature Control 124 4 13 High Pressure Control in Cooling nnee enennennne eenen 125 4 14 Compressor Sensor System Abnormality annen 127 4 15 Position Sensor Abnormality AAA 128 4 16 DC Voltage DC Current Sensor Abnormality en 130 4 17 Thermistor or Related Abnormality Outdoor Un 131 4 18 Electrical Box Temperature RisS nanne enneennennneeneenneennenn 133 SiEN12 710A 4 19 Radiation Fin Temperature Rise nnn nnn nnnnennenneenneennnenneenneen 135 4 20 Output Over Current Detection naan onee nneeneneennennennneennen 137 4 21 Insufficient Gas 139 4 22 Over voltage Detection Low voltage Detection 141 4 23 Anti icing Function in Other Rooms Unspecified Voltage between Indoor and Outdoor Une 142 4 24 Outdoor Unit PCB Abnormality or Signal Transmission Circuit Abnormality aen 143 Der CISC EE 146 SE Howto Che eege et es EES E 146 Part 7 Removal Procedure nnnnnnnnansnnsnnnsnnnnsnnnnnnnnnsnsssssnnnsnnnen 195 He Outdoor MIU EE 156 1 1 Removal of the Panels and Plates ooococccnononoccccoconencncnnoninnnnns 156 1 2 Removal of the Electrical Box 158 1 3 Removal or the PCB unsure airis 163 1 4 Removal of the Sound Blanket cccccccccoconcoccncncncccncnnnoccnononcnnnononanos 168 1 5 Removal of the Propeller Fan Fan Motor 170 1 6 Remova
78. GAS cee rA ATO 139 insufficient gas control neee enen 56 INTELLIGENT EYE nnen ennennneenenen 33 INTELLIGENT EYE operation nnn 83 INTELLIGENT EYE sensor PCB ee 17 inverter POWERFUL operation n 36 inverter units refrigerant system check 152 J IIe ant rdt ee AE 20 131 Artritis 20 181 EEN 131 IG ander naaien denten ee dee 131 WEE 131 JA is 16 18 181 oil isis 16 18 181 d e 16 18 181 jumper settings vrese ir eE T AREA 181 L Ee EAEE E Ee A eos 133 E A 135 B ELETE E E E E EEE 137 CEDA Tenen a AR 16 18 20 LED Pai date 16 18 LED rodada 16 18 LEDS session iii 16 18 limit switch nnen enneenene nennen ennen 116 limit switch continuity check _ 146 liquid compression protection function 2 50 liquid pipe thermistor nnn 40 132 low voltage detection 141 M main circuit electrolytic capacitor check 153 mode hierarchy ornar ir n eeen ATE 42 mold proof air filter prefilter eeeeeeeeeeees 37 mold proof operation nanne eneen 82 N names Of parts nnnn a a nennen 64 night set mode annnnasareennnnen a 31 note for multi system annen 87 O oil recovery function annen eneen 55 UU e 119 ON OFF button on indoor unit ene 37 A ead ce 54 Operation lamp nnen neee ennen ennennenenneen 102 outdoor heat exchanger thermistor 39 41 outdoor temperature thermistor 132 outdoo
79. MP 6 ee 9 7 eum QUIET 8 10 13 erc UN RESET 14 12 11 ARC433B69 B76 Signal transmitter e It sends signals to the indoor unit Display e It displays the current settings In this illustration each section is shown with all its displays ON for the purpose of explanation HOME LEAVE button HOME LEAVE operation POWERFUL button POWERFUL operation TEMPERATURE adjustment buttons e It changes the temperature setting ON OFF button e Press this button once to start operation Press once again to stop it 7 MODE selector button e It selects the operation mode AUTO DRY COOL HEAT FAN 8 QUIET button OUTDOOR UNIT QUIET operation 9 FAN setting button e It selects the air flow rate setting 10 ON TIMER button 11 OFF TIMER button 12 TIMER Setting button e It changes the time setting 13 TIMER CANCEL button It cancels the timer setting 14 CLOCK button 15 RESET button e Restart the unit if it freezes Use a thin object to push 69 Instruction SIEN12 710A 2 4 Preparation Before Operation B To set the batteries 1 Slide the front cover to take it off 2 Set two dry batteries AAA 3 Set the front cover as before Position and ATTENTION H About batteries e When replacing the batteries use batteries of the same type and replace the two old batteries together When the system is not used for a long time take the
80. OFF TIMER and ON TIMER in combination B To use OFF nn operation eCheck that the clock is correct If not set the clock to the present time 1 Press OFF TIMER button 0 00 is displayed O blinks 2 Press TIMER Setting 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 OFF TIMER button again MODE FAN Gsmo The TIMER lamp lights up QUIET NOLO PROOF SENSOR fa Ce 2 ol PUSH for 2sec fee aT LA 4 Or Y We B To cancel the OFF TIMER operation Timer RESET S 4 Press CANCEL button e The TIMER lamp goes off DAIKIN NOTE e 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 control batteries are replaced e 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 m 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 Operation Manual 85 Instruction SiEN12 710A B To use ON TIMER operation Check that the clock is correct lf not set the
81. PCB Loosen the screw of the cover of the Electrical box Detach the insulation sheet Loosen the 2 screws of the terminal boards to remove Undo the earth wire from the hook Electrical box cover R7592 Central label R7593 Insulation sheet terminals R7594 R7599 B Remove the electrical box B The trimmed part goes front B The terminal board is united according 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 with temperature fuse Removal Procedure 163 SiEN12 710A Outdoor Unit Step Procedure Points 5 Loosen the 2 screws and detach the 1 clip to Temperature fuse harness remove the radiation shield plate Radiation shield plate 2 8 R7600 Compressor harness Clip Cut off the clamp and disconnect the wire harnesses 164 fl i 7 E Ss R7596 R7601 R7597 ee H The clip is push mount type Se Hole Removal Procedure SiEN12 710A Outdoor Unit Step Procedure Points 7 Loosen the 7 screws in total to remove the PCB
82. PCB abnormality or signal transmission circuit abnormality 143 output over current detection 137 over voltage detection low voltage detection 141 SIEN12 710A P phase steps E E E ennenennenn 27 piping diagrams duct connected type 184 outdoor UNITS EE 185 wall mounted type n nnee 184 position sensor abnormality 128 power supply waveforms check ooococcccccciccinnncn 151 power transistor nnen enen ennen 182 power transistor check nnee eneen 153 programme dry function nnee enen 28 R radiation fin temperature rise ennen 135 S signal receiver PCB nnee ennen 17 Silicon grease annen denn od ded 182 T target discharge pipe temperature control 55 thermistor or related abnormality indoor unit 115 thermistor or related abnormality outdoor unit 131 thermistor resistance Check 149 thermostat control _ ennen 30 trial operation from remote control 180 turning speed pulse input on the outdoor unit A o carierre EE 154 WwW wiring diagrams duct connected type nnen 186 outdoor UNITS znne renner a 187 wall mounted type nnn neen 186 vi Drawings amp Flow Charts Daikin s unique position as a manufacturer of air conditioning equipment compressors and refrigerants has led to its close involvement in environmental issues For several years Daikin has had the intension to become a leader
83. PING ER MUFFLER THERMISTOR GAS NS FOUR WAY VALVE SCHT can CC 9 5CuT _ROOMB NORMALLY OFF 9 5 CuT L Zum el DISCHARGE PIPE pF 9Cu REFRIGERANT Pow eg KE ACCUMULATOR COMPRESSOR EEN 3D055809B 2MXS50FV1B 2 OUTDOOR UNIT iin ie OUTDOOR TEMPERATURE BRANCH THERMISTOR MOTOR OPERATED VALVE LIQUID PIPE LIQUID LINE pipe 7 90uT HEAT EXCHANGER c FILTER THERMISTOR STOP VALVE men SA4CuT N q _6 4CuT ROOM A 7 9CuT gt 6 4 CuT SEN BRANCH 6 4CuT ane FIELD LL MOTOR OPERATED VALVE LIQUID PIPE LIQUID LINE PIPING m MUFFLER Evo FILTER THERMISTOR STOP VALVE LIQUID CA 6 4CuT Co 6 4CuT JL ROOMB BRANCH S 6 4 CUT HEAT EXCHANGER K 4 8CUT THERMISTOR Ton i FAN MOTOR i It 9 5CuT PROPELLER FAN GAS LINE i GAS PIPE STOP VALVE y 9 5C er sour HEMSTOR cur ROOMA a u a U EH i u A Gef 9 5CuT Bea Qe 9 5CuT i caste 5 on 5Cu A S DU SS a GAS PIPE STOP VALVE PIPING ENP J MUFFLER THERMISTOR i GAS Nr FOUR WAY VALVE SE cut Seo oy cut ON HEATING 12 7 CuT EE ee 7 9CUT 4 E EE ERE mor A MUFFLER DISCHARGE PIE lo mer 9 5CuT 7 9CuT REFRIGERANT FLOW A i COOLING ACCUMULATOR HEATING COMPRESSOR l A a a 3D057467B Appendix 185 Wiring Diagrams SIEN12 710A 2 Wiring Diagrams 2 1 Indoor Units 2 1 1 Wall Mounted Type FTKS25 35DVM FTXS25 35EVMA S26 PCB1 RECTIFIER
84. VE Outdoor BE 185 2 Winnog le TEE 186 ZINC A 8 1a T EE NEE 186 2 2 Outdoor Rn TEE 187 Appendix 183 Piping Diagrams SiEN12 710A 1 Piping Diagrams 1 1 Indoor Units 1 1 1 Wall Mounted Type FTKS25 35DVM FTXS25 35EVMA Indoor unit Indoor unit Heat exchanger 7 0CUT 6 4CuT Thermistor on heat exch 0 Cross flow fan Fan motor 9 5CuT 7 9CUT 7 9CuT o IN O u f Thermist Ll Jee DE j FLIO Field piping Field piping JJ Cross flow fan M 6 4CuT Field piping 6 4CuT j Fan motor Field piping 9 5CuT 9 5CuT 9 5CuT I Refrigerant flow Refrigerant flow cooling cooling heating 4D050757A 4D047912G 1 1 2 Duct Connected Type FDKS25 35EAVMB FDKS25 35CAVMB FDXS25 35CVMA CDXS25 35EAVMA Indoor unit Field piping Cross flow fan 6 4CuT m Field piping Fan motor ACuT A A i CDXS25CVMB CDXS50CVMB Refrigerant flow CDKS25CVMB CDKS50CVMB cooling CDXS35CVMB CDXS60CVMB h j CDKS35CVMB CDKS60CVMB heating CDXS25CVMA CDXS50CVMA CDXS35CVMA CDXS60CVMA FDXS25CVMB CDKS50CVMA FDXS35CVMB CDKS60CVMA 127 FDXS35CVMA CDXS50DVMT a FDXS25EAVMB CDXS60DVMT FDXS35EAVMB CDKS50DVMT FDKS25CVMB CDKS60DVMT FDKS35CVMB FDXS50CVM FDKS25EAVMB FDXS60CVMB FDKS35EAVMB FDKS50CVMB CDKS25CVMA 9 5 FDKS60CVM CDKS35CVMA CDXS50EV2C CDXS
85. air temperature becomes higher than a certain level model by model 48 Function and Control SiEN12 710A Control Specification 2 6 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 start with the indoor heat exchanger temperature after 2 sec from operation start and after 30 sec from changing number of operation room Control in Each Zone Heat exchanger thermistor temperature Return from stop Reset zone 7 C 5 C Keep zone 3 C Drooping zone DC mp mm mmm mmm mmm nmn mmm nmn nmn mmm Stop zone R4561 2 7 Heating Peak cut Control Outline Heat Pump Only 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 Detail Conditions for Start Controlling Judge the controlling start with the indoor heat exchanger temperature after 2 min from operation start and A sec 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
86. 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 ea setting 1 C N Temperature c 5 setting 0 5 tosc OOOO _ Temperature setting Operation stops SE SE eS at the set hours Timer operation S Ce P A 0 5 C temperature shift Night Set Circuit ON H Temperature setting remains the same e When outside temperature is normal and room temperature is at set temperature When outside temperature is high 27 C or higher R1361 In case of FTKS25 35D FTXS25 35E the temperature rises once Temperature setting 0 5 C o et A LA Temperature setting Operation stops at the set hours Timer operation 0 5 C Night Set Circuit ON temperature shift R4421 Heating Operation p 2C Thermostat 1 setting A A Umer operation Night 1 hour later et Circuit R1362 Function and Control 31 Main Functions SIEN12 710A 1 8 ECONO Mode Outline FTKS25 35D FTXS25 35E The ECONO mode reduces the maximum operati
87. anger Outdoor air thermistor Overheating protector 166 Removal Procedure SiEN12 710A Step 12 Loosen the 2 screws of Procedure Outdoor Unit Points the radiation fin R7608 Removal Procedure R7609 167 Outdoor Unit SiEN12 710A 1 4 Removal of the Sound Blanket Procedure A Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points B Remove the electrical box 1 Remove the right side panel 1 Loosen the 6 screws to remove the right side panel Kal Ki 0 2 Remove the partition plate 1 Loosen the 2 screws to remove the partition plate Ez GE EIN i ft B When assembling 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 saa Ge A iS ANET Sh cd ES B Loosen the screw of the sA reactor and remove it 168 Removal Procedure SiEN12 710A Outdoor Unit 2 Lift up the sound blanket top upper to r
88. arerverreneresenremsenenennenen end vann neen ceeee ean de 28 1 5 Automatic Operation stae a a AE a EENE 29 1 6 Thermostat Control 30 17 Nier MeocRs emgot ege aaa data a a E 31 Te ECONO et 32 1 9 INTELLIGENT EYE ian kui iin vida Atal taeda belendend 33 1 10 HOME LEAVE Operation an a a A a ERs 35 1 11 Inverter POWERFUL Operation 36 1 12 Other FUNCHONS corr Ee ben tea dona ai iba 37 1 13 Function of Thermistor eenen venen enen ennvens vennen ennen 39 2 GOTO Specificato e EE 42 Zale Mode FIG tegen atten dt EE ege 42 2 2 Frequency CONTO WEE 43 2 3 Controls at Mode Changing Start Up nanne eenen 46 2 4 Discharge Pipe Temperature Control 48 2 5 Input Current Control 48 2 6 Freeze up Protection Control 49 2 7 Heating Peak cut Coro EE 49 2 8 FAN CONO s 50 2 9 Liquid Compression Protection Function 3 50 2 10 Defrost CONO A A A ae 51 2 11 Electronic Expansion Valve Control 52 ii Table of Contents SIEN12 710A 212 E utile Liner ALA 56 2 13 Forced Operation Mode 57 2 14 Additional Function anneer eneen erenerenernnerenereneeenen 58 Part 5 Operation Nanual ene EEE KEE KERKEER KEE KEEREEREER ER ER KKK er 99 1 2 System Configura tech nn keten 60 1 1 Operation Instructions enen cette eee verveners ennnnens vennen ennn ennn 60 ESCHW 61 2 1 Manual Contents and Reference Page nennen eenen 61 2 2 Safety TE 62 2 3 Names Oase eunen iets Eed 64 2 4 Prepa
89. at y Pump model Control of discharge pipe thermistor disconnection Open control when starting Y Continue Y Stop Pressure equalizing control R7045 Function and Control 53 Control Specification SiEN12 710A 2 11 1 Fully Closing with Power On Initialize the electronic expansion valve when turning on the power set the opening position and develop pressure equalizing 2 11 2 Pressure Equalization Control When the compressor is stopped open and close the electronic expansion valve and develop pressure equalization 2 11 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 stopped and is opened with fixed opening during defrosting 2 11 4 Gas Pipe Isothermal Control During Cooling When the units are operating in multiple rooms detect the gas piping temperature and correct the electronic expansion valve opening so that the temperature of the gas pipe in each room becomes identical When the gas pipe temperature gt the average gas pipe temperature open the electronic expansion valve in that room When the gas pipe temperatu
90. ation Stop Home leave operation The set temperature and set air volume are memorized in the remote control When the remote control is reset due to replacement of battery it is necessary to set the temperature and air volume again for HOME LEAVE 35 Main Functions SIEN12 710A 1 11 Inverter POWERFUL Operation Outline 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 Details of the When POWERFUL button is pushed in each operation mode the fan speed setting Control temperature will be converted to the following states in a period of 20 minutes Operation mode Fan speed Target set temperature COOL H tap 50 rpm 18 C DRY Dry rotating speed Normally targeted 50 rpm temperature in dry operation Approx 2 C HEAT H tap 50 rpm 30 C FAN H tap 50 rpm AUTO Same as cooling The target is kept heating in POWERFUL unchanged operation Ex POWERFUL operation in cooling mode Target temp ia sE jo Spake EE fo EE ee pe ae 1 Set temp It should be the lower limit of cooling temperature EE Ending condition or in 1 to 3 l l 50rpm A SE the lapse of 20 minutes j tap r pe 3 POWERFUL operation is OFF l Set tap l R7118 Refer to Fan Speed control on page 27 for detail 36 Funct
91. ation fin temperature rises above 75 C even when the air conditioning is not operated and stops itself when it drops below 70 C rror again or outdoor unit fan activated YES NO Check No 06 Check the thermistor resistance value Fin thermistor Y Check the radiation fin temperature hermistor as specified in its characteristic chart NO Replace the fin thermistor Above 80 C Replace the outdoor unit PCB Check No 09 Check the outdoor unit fan or related Malfunctioning gt Replace the fan motor Correct the connectors and fan motor leads Functioning Es the outdoor unit PCB Too dirty Radiation fin dirty gt Clean up the radiation fin Slightly dirty Check No 07 Check the installation condition R7146 Service Diagnosis SiEN12 710A Troubleshooting 4 19 Radiation Fin Temperature Rise LY Remote Control Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Service Diagnosis A radiation fin temperature rise is detected by checking the radiation fin thermistor with the compressor on If the radiation fin temperature with the compressor on is above 93 C If a radiation fin temperature rise takes place 255 times successively the system will be shut down The error counter will reset itself if
92. ative plate 3 Remove the slot in panel 4 Put the plug in or turn the breaker on Wait until the initialization finishes 5 Operate the unit by the indoor unit ON OFF switch 116 Service Diagnosis SIEN12 710A Troubleshooting 4 7 Freeze up Protection Control Remote Control Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Service Diagnosis AS Indoor unit icing during cooling operation is detected by checking the temperatures sensed by the indoor unit heat exchanger thermistor and room temperature thermistor that are located in a shut down room At another room the indoor unit is normal UH is displayed on the remote control In the cooling mode the following conditions A and B are kept together for 5 minutes A Indoor unit heat exchanger temperature lt 1 C B Indoor unit heat exchanger temperature lt Room temperature 10 C If the freeze up protection control is activated 4 times continuously the system will be shut down The 4 time counter will reset itself if any of the following errors does not occur for 60 minutes OL radiation fin temperature rise insufficient gas and compressor lock Wrong wiring or piping EV malfunctioning in each room Short circuit Indoor unit heat exchanger thermistor abnormality Room temperature thermistor abnormality 117 Troubleshooting SiEN12 710A Troubleshooting
93. attempt to install the air conditioner by your self Incorrect work will result in water leakage electric shocks or fire For installation consult the dealer or a qualified technician e In order to avoid electric shock fire or injury if you detect any abnormally such as smell of fire stop the operation and turn off the breaker And call your dealer for instructions e Depending on the environment an earth leakage breaker must be installed Lack of an earth leakage breaker may result in electric shocks or fire e The air conditioner must be earthed Incomplete earthing may result in electric shocks Do not connect the earth line to a gas pipe water pipe lightening rod or a telephone earth line A CAUTION e In order to avoid any quality deterioration do not use the unit for cooling precision instruments food plants animals or works of art O e Never expose little children plants or animals directly to the air flow 62 Operation Manual SIEN12 710A Instruction e Do not place appliances which produce open fire in places exposed to the air flow from the unit or under the indoor unit It may cause incomplete combustion or deformation of the unit due to the heat Do not block air inlets nor outlets Impaired air flow may result in insufficient performance or trouble e Do not stand or sit on the outdoor unit Do not place any object on the unit to avoid injury do not remove the fan guard Do not place anything under the
94. batteries out e We recommend replacing once a year although if the remote control display begins to fade or if reception deteriorates please replace with new alkali batteries Do not use manganese batteries e The attached batteries are provided for the initial use of the system The usable period of the batteries may be short depending on the manufactured date of the air conditioner 70 Operation Manual SiEN12 710A Instruction B To operate the remote control To use the remote control aim the transmitter at the indoor unit If there is anything to block signals between the unit and the remote control such as a curtain the unit will not operate Do not drop the remote control Do not get it wet The maximum distance for communication is about 7 m B To fix the remote control holder on the wall 1 2 3 ATTENTION B About remote control Choose a place from where the signals reach the unit Fix the holder to a wall a pillar etc with the screws supplied with the holder Place the remote control in the remote control holder e Never expose the remote control to direct sunlight Dust on the signal transmitter or receiver will reduce the sensitivity Wipe off dust with soft cloth e Signal communication may be disabled if an electronic starter type fluorescent lamp such as inverter type lamps is in the room Consult the shop if that is the case e If the remote control signals happen to operate
95. book Guide etc are provided 104 Service Diagnosis SIEN12 710A Service Check Function 3 Service Check Function 3 1 Check Method 1 The temperature display sections on the main unit indicate corresponding codes ARC433 Series 1 When the timer cancel button is held down for 5 seconds a 00 indication flashes on the temperature display section kel POWERFUL TEMP M O QUIET MOLDPROOF SENSOR TIMER CANCEL button It cancels the timer setting Ey Za O lt ARC433B46 B47 gt R7279 2 Press the timer cancel button repeatedly until a continuous beep is produced EB The code indication changes in the sequence shown below and notifies with a long beep No Code No Code No Code 1 00 12 a 23 HO 2 Uu 13 HB 24 El 3 F3 14 JF 25 PY 4 Ep 15 A3 26 L3 5 L 16 1 27 L 6 AG 17 cy 28 H6 7 ES 18 c5 29 HT 8 F6 19 Ho 30 ue 9 cy 20 J6 31 UH 10 ug 21 uA 32 ER 11 EI 22 AS 33 AH lt In case of ARC433B46 47 gt No Code No Code No Code 1 00 12 FS 23 7 2 uy 13 a 24 1 3 L 14 A3 25 uA 4 Eb 15 HB 26 UH 5 H6 16 H9 27 PY 6 Ha 17 cg 28 L3 7 AG 18 cy 29 L4 8 7 19 cs 30 HT 9 UD 20 mE 31 ue 10 F3 21 d 32 EA 11 AS 22 ES 33 AH H 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
96. by the 20 sec 55 Control Specification SiEN12 710A 2 12 Malfunctions 2 12 1 Sensor Malfunction Detection Sensor malfunction may occur either in the thermistor or current transformer CT system Relating to Thermistor Malfunction 1 Outdoor heat exchanger thermistor 2 Discharge pipe thermistor 3 Fin thermistor 4 Gas pipe thermistor 5 Outdoor air thermistor 6 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 2 12 2 Detection of Overload and Over Current Outline Detail In order to protect the inverter detect an excessive output current and for protecting compressor monitor the OL operation E 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 compressor gets interrupted too 2 12 3 Insufficient Gas Control Outline 56 If a power consumption is below the specified value in which the frequency is higher than the specified frequency it must be regarded as gas insufficient In addition to such conventional function if the discharge temperature is higher than the target discharge pipe temperature and the electronic expansion valve is fully open 450 pulses more than the specified time it is considered as an insufficient gas Insufficient gas zone Power consumpt
97. computer Control Dimensions HxWxD mm 200x900x620 200x900x620 Packaged Dimensions HxWxD mm 266x1 106x751 266x1 106x751 Weight kg 25 25 Gross Weight kg 31 31 poration H MIL SL dBA 35 33 31 29 35 33 31 29 External Static Pressure Pa 40 40 Moisture Removal L h 1 2 1 9 Heat Insulation Both Liquid and Gas Pipes Both Liquid and Gas Pipes Liquid mm 6 4 6 4 Piping Connection Gas mm 09 5 09 5 Drain mm VP20 O D 626 1 D 20 VP20 O D 26 I D 20 Drawing No 3D048947C 3D048948C Note 1 The operating sound is based on the rear side suction inlet and the external static pressure 40 Pa Conversion Formulae Operating sound for under side suction inlet operating sound for rear side suction inlet 5 dB i R E kcal h kWx860 However when installation to which the external static pressure becomes low is carried out Btu h kWx3414 5 dB or more may go up cim m minx35 3 8 Specifications SiEN12 710A Cooling Only 50Hz 230V Model FDKS25EAVMB FDKS35EAVMB Rated Capacity 2 5kW Class 3 5kW Class Front Panel Color H 8 7 307 8 7 307 m min M 8 0 282 8 0 282 AAE cfm L 7 3 258 7 3 258 SL 6 2 219 6 2 219 Type Sirocco Fan Sirocco Fan Fan Motor Output Ww 62 62 Speed Steps 5 Steps Quiet Auto 5 Steps Quiet Auto Air Filter Removable Washable Mildew Proof Removable Washable Mildew Proof Running Current Rated A 0
98. ction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting 130 HO DC voltage or DC current sensor system fault is identified based on the compressor operation frequency and the input current detected by the product of DC current and DC voltage When the compressor operation frequency is more than 52 Hz and when the DC current is less than 0 3 A or DC voltage is less than 50V B If this error repeats 4 times the system will be shut down B The error counter will reset itself if this or any other error does not occur during the following 60 minute compressor running time total time Power transistor defective Internal wiring broken or in poor contact Reactor defective Outdoor unit PCB defective Refrigerant shortage AN 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 SiEN12 710A Troubleshooting 4 17 Thermistor or Related Abnormality Outdoor Unit Remote Control PY WEI Ub JG J f 19 Display Method of This type of error is detected by checking the thermistor input voltage to the microcomputer Malfunction A thermistor error is detected by checking the temperature Detection Malfunction The thermistor input is above 4 98 V or below 0 02 V with the power on for 5 seconds Decision Error 43 is judged if the discharge pipe thermistor temperatu
99. d Control 33 Main Functions SiEN12 710A Others 34 B Since the set temperature is shifted by 2 C higher for 40 minutes compressor speed becomes low and can realize energy saving operation But as thermostat is prone to be off by the fact that the set temperature has been shifted the thermostat off action is prohibited in 40 minutes so as to prevent this phenomena After this 40 minutes the prohibition of the thermostat off is cancelled and it can realize the conditions to conduct thermostat off depending on the room temperature In or after this 40 minutes if the sensor detects human motion detection signal it let the set temperature and the fan speed return to the original set point keeping a normal operation B The dry operation can t command the setting temperature with a remote control but internally the set temperature is shifted by 1 C Function and Control SiEN12 710A Main Functions 1 10 HOME LEAVE Operation Outline Detail of the Control Others Function and Control In order to respond to the customer s need for immediate heating and cooling of the room after returning home or for house care a measure to switch the temperature and air volume from that for normal time over to outing time by one touch is provided This function responds also to the need for keeping up with weak cooling or heating This time we seek for simplicity of operation by providing the special temperature and air v
100. d at the middle of the unit and push the other side gently over the 3 bends Main unit n 49 Attach the filter to the a main unit while Filter vg pushing down on the Force tabs In case of back side In case of bottom side WM 92 Operation Manual SIEN12 710A Instruction B Cleaning the drain pan e Clean the drain pan periodically or drain piping may be clogged with dust and may result in water leakage Ask your DAIKIN dealer to clean them e Prepare a cover locally to prevent any dust in the air around the indoor unit from getting in the drain pan if there is a great deal of dust present CAUTION Do not operate the air conditioner without filters this to avoid dust accummulation inside the unit Do not remove the air filter except when cleaning Unnecessary handling may damage the filter Donotuse gasoline benzene thinner polishing powder liquid insecticide H may cause discoloring or warping Do not let the indoor unit get wet It may cause an electric shock or a fire e Operation with dusty air filters lowers the cooling and heating capacity and wastes energy e The suction grille is option Do not use water or air of 50 C or higher for cleaning air filters and outside panels Check Check that the base stand and other fittings of the outdoor unit are not decayed or corroded Check that nothing blocks the air inlets and the outlets of the indoor unit a
101. ded temperature setting For cooling 26 C 28 C For heating 20 C 24 C Mode Operating conditions If operation is continued out of this range COOL Outdoor temperature 10 to 46 C e A safety device may work to stop the Indoor temperature 18 to 32 C operation In multi system it may work to stop Indoor humidity 80 max the operation of the outdoor unit only e Condensation may occur on the indoor unit and drip HEAT Outdoor temperature 10 to 20 C s A safety device may work to stop the operation Indoor temperature 10 to 30 C DRY Outdoor temperature 10 to 46 C A safety device may work to stop the operation Indoor temperature 18 to 32 C Condensation may occur on the indoor unit and Indoor humidity 80 max drip Operation outside this humidity or temperature range may cause a safety device to disable the system Operation Manual SiEN12 710A Instruction 2 5 AUTO DRY COOL HEAT FAN Operation 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 B To start operation 1 Press MODE selector button and select a operation mode e Each pressing of the button advances the mode setting in sequence A AUTO Kl DRY COOL 2 HEAT 2 FAN lt FTK gt lt FTX gt dad 2 Press ON OFF button e The OPERATION lamp lights up Ly
102. dure Points 11 Detach the discharge m Meet the edge of the pipe thermistor Disconnect the connector for the thermistor ASSY S90 Undo the wire clamp for the thermistor ASSY under the electrical box Loosen the screw on the right side of the electrical box f Clip for discharge pipe thermistor Discharge pipe thermistor Vee R7586 R7587 R7589 thermistor and the clip B Be careful not to lose the clip for the discharge pipe thermistor S90 Thermistor ASSY Outdoor air Heat exchanger Discharge pipe Removal Procedure 161 Outdoor Unit SIEN12 710A Step Procedure Points 15 Loosen the screw in front of the electrical box 16 Lift up the electrical box to remove Gs ue EH L E Q MeNi ar D AS AIS SL gg Ka REE AN 162 Removal Procedure SiEN12 710A Outdoor Unit 1 3 Removal of the PCB Procedure A Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points B Remove the outer panels Preparation and plates such as the top plate and the front panel Remove the
103. e 27 automatic operation ann enneneneeen eenen enn 29 AUTO WIN e TN 26 Cc capacitor voltage check neee 152 check NOOT nacine rivsrteenetnternrt diia 146 check No 03 nnee eneenenereeeeeen eneen 146 check No 04 ita EEEN 146 check Nope 148 check e EE 149 CHECK NO UT a cons dee S i Been 150 check Mer Heger ere dee eee eae eee mee 151 Eheck No 09 e enee na aot tes A 151 Check NOMO zat terssetienetbderenaabendalnd nae ttde 8 deeg 151 CHECK NOMA ed ee Seite eege Se e 152 check NO T2 cite iene tet eet ae 152 check No r a e a 153 check NOTA a ea AANEREN 153 CHECKINOA TE 154 Check NOTO EE 154 comfort airflow mode nnn eneen 26 compressor lock aen neneneeeeeeeeneenenn 120 compressor protection function aen 47 compressor sensor system abnormality 127 control PCB 40 class eneen 21 control PCB 50 class nennen 21 control PCB indoor unit ee 17 19 D DC fan loek narren geste aie 121 defrost control neen ennenenneneenneenenn 51 diagnosis mode nnee ennen 106 diode bridge nnee neee ense ARE 182 discharge pipe temperature control 48 124 discharge pressure check eneee 151 display POB TE 17 19 E econo mode A 32 electrical box temperature rise annen 133 electronic expansion valve check 146 electronic expansion valve control _ 52 F fan motor connector output check 146 fan motor or related abnormality euer EE
104. e caused by the problem related to the indoor unit Check supply voltage NO Rated voltage gt Rectify the power supply Check varistor V1 on the outdoor unit PCB YES Is it damaged gt Replace the varistor NO Check fuse FU1 on the outdoor unit PCB NO gt Replace the fuse Does it have conductivity Check thermal fuse on the terminal board NO Check terminal board connecting wire for proper connection Does it have conductivity Replace thermal fuse on the terminal board Check and on the outdoor unit PCB gt Reconnect properly Replace terminal board Rewer on again Replace thermal fuse on the terminal board Firmly connected Wait more than 10 sec NO 5 V 0 5 V gt Replace outdoor unit PCB YES Continued to the next page R7152 144 Service Diagnosis SiEN12 710A Troubleshooting Check No 10 Refer to P 151 Continued rom 1 the previous page Does LED A turn off Check No 10 Check the power supply waveform Disturbance Check grounding Grounded Carry out grounding work The cause seems to be an external factor other than YES gt failure of the outdoor unit PCB Investigate source of noise and take measures Turn off the power supply Disconnect No 3 terminal and turn on the power suppl
105. e 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 flap enables direct warm air straight downwards The flap presses the warm air above the floor to reach the entire room Cooling Mode During cooling 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 In case of FTKS25 35D FTXS25 35E The following table explains the auto swing process for heating cooling dry and fan Vertical Swing up and down Horizontal Swing Cooling Dry Heating Fan right and left manual o S Hy o 5 Y 5 AN Le A cla Gel 50 30 Zoe 65 R4284 R4281 R4282 R4283 FTKS25 35D FTXS25 35E The vertical swing flap is controlled not to blow the air directly on the person in the room B The airflow rate is controlled automatically within the following steps Cooling L tap MH tap same as AUTOMATIC Heating ML tap M tap B The latest command has the priority between POWERFUL and COMFORT AIRFLOW Heating Cooling R4303 R4302 Function and Control SiEN12 710A Main Functions 1 3 Fan Speed Control for Indoor Units Control Mode Phase Steps H Note
106. ector for AC fan motor Connector for centralized control to 5 rooms Connector for display PCB Connector for heat exchanger thermistor PCB 2 Display PCB 1 S1 Connector for control PCB Other designations PCB 1 Control PCB 1 vi 2 JA JB JC 3 LEDA 4 FU1 Varistor Address setting jumper Fan speed setting when compressor is OFF on thermostat Power failure recovery function Refer to page 181 for more detail LED for service monitor green Fuse 3 15A PCB 2 Display PCB 1 SW1 S1W 2 LED1 3 LED2 4 LED3 5 RTH1 R1T Forced operation ON OFF switch LED for operation green LED for timer yellow LED for HOME LEAVE operation red Room temperature thermistor Printed Circuit Board Connector Wiring Diagram SiEN12 710A Printed Circuit Board Connector Wiring Diagram PCB Detail PCB 1 Control PCB indoor unit Vi ws Ce E i Sie Ee Oe d ec SCH cota Y Gelle ly Ka Ke Lo lo eg H CS zer LEDA JA JB JC 32 2P131149 PCB 2 Display PCB EM LED3 1 a e S LED2 8 ER r p lt ek RTH1 LED1 SW1 2P084375 Printed Circuit Board Connector Wiring Diagram Printed Circuit Board Connector Wiring Diagram SiEN12 710A 1 3 Outdoor Unit Connectors H Note PCB Detail 20 V4 FU3 PCB 1 Control PCB 1 S20 Other Designations PCB 1 Control PCB 1 LED A 2 FU1 FU2 3 FU3 4 DB1 DB2 5 J3 6 J
107. ecurely mounted it may fall and cause injury When replacing the coin battery in the remote control be sure to disposed of the old battery to prevent children from swallowing it If a child swallows the coin battery see a doctor immediately AP Caution 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 Ga Ga viii SIEN12 710A Introduction AN Caution 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 and floor Be sure to check the drainage of the indoo
108. emove 3 Open the sound blanket inner and pull it out Pull out the sound blanket bottom Step Procedure Points 3 Remove the sound blanket 0 FT Ll 1 Undo the fixing strings E a mn open the sound blanket cl body and pull it out al EI QU R7613 gt S Ti dad 2 Gang E A Si S e D E NT S ig LW Ca G EA 8 ES F Y al LON ken E D Gi d E ZR u y A A 2 sae Al 3 LS OA pa E R7614 R7615 R7616 B Since the piping ports are torn easily remove the blanket carefully R7617 Removal Procedure 169 Outdoor Unit SiEN12 710A 1 5 Removal of the Propeller Fan Fan Motor Procedure A Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points 1 Loosen the washer fitted nut M10 by an open ended spanner to remove the propeller fan 1 Remove the propeller fan qe ie c qh Wa
109. er 37 titanium apatite photocatalytic air purifying Diller 37 forced operation mode n nnen 57 forced operation ON OFF switch 16 18 four way valve operation compensation 46 four way valve performance check 148 four way valve switching nnn nnee 46 freeze up protection control 49 117 freeze up protection control or high pressure control enen 110 CMS ie ai n 43 frequency principle nnen enenennnnen nennen 24 front panel mechanism nennen 116 front panel open close fault nn 116 A a TO 16 18 20 UE 20 EUS eaten nd neten eea 20 function list OF ane ee nee senenenne neven 2 En 16 18 20 G gas pipe isothermal control during cooling 54 gas pipe thermistor nee 39 41 132 H Le IR 127 FAG MET 128 ETE 130 HO rn det eal r a 131 lte sects eae oe oat eae EE 16 e EI DT TEE 27 112 113 121 Hall IC check A 154 heat exchanger temperature thermistor 115 heating peak cut control neee 49 high pressure control in cooling nn 125 HOME LEAVE operation nnee 35 80 hot start function nonsense nennen eenen enenneneneen 37 l indoor heat exchanger thermistor 40 41 indoor unit PCB abnormality eeeeeeeeees 109 input current control _ nnn eneen 48 input over current detection en 122 installation condition check 150 Ile de 61 insufficient
110. er consumption value of outdoor unit with Malfunction the compressor running Detection Malfunction B The following input value calculated from power consumption of outdoor unit with the Decision compressor running continues for 2 5 seconds Conditions Input value Above 15A Supposed B Over current due to compressor failure Causes EB Over current due to defective power transistor EB Over current due to defective inverter main circuit electrolytic capacitor EB Over current due to defective outdoor unit PCB B Error detection due to outdoor unit PCB Over current due to short circuit 122 Service Diagnosis SiEN12 710A Troubleshooting Troubleshooting Check No 07 Refer to P 150 Check No 08 Refer to P 151 Check No 14 Refer to P 153 H Note Service Diagnosis Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred An input over current may result from wrong internal wiring If the wires have been disconnected and reconnected for part replacement for example and the system is interrupted by an input over current check the wires again Get restarted and measure the input current Input current lowing above its stop level NO YES Check No 14 Check the main circuit electrolytic capacitor 0 Normal NO Replace the outdoor unit PCB y YES Turn off the power and disconnect the harnesses U V and W
111. er error does not occur during the following Conditions 60 minute compressor running time total time The operating temperature condition is not specified Supposed Causes Refrigerant shortage Four way valve malfunctioning Outdoor unit PCB defective Water mixed in the local piping Electronic expansion valve defective Stop valve defective Troubleshooting AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check No 04 Refer to P 146 Check No 05 Refer to P 148 Check No 06 Refer to P 149 Check No 11 Refer to P 152 Discharge pipe thermistor disconnected YES gt Insert the thermistor in position Check No 06 Check the thermistors Malfunctionin 3 Replace the discharge pipe Discharge pipe thermistor thermistor Functioning Check No 04 Check the electronic expansion valve Malfunctionin 9 Replace the valve itself or the coil Functioning Check No 05 Malfunctioning Check the four way valve gt Replace the four way valve coil or the valve itself Replace the outdoor unit Functioning PCB Check No 11 Check the refrigerant line Malfunctioning gt Refer to the refrigerant line Refrigerant shortage check procedure Water mixed Functioning Stop valve defective gt Replace the outdoor unit PCB R7137 Service Diagnosis
112. ersion principle Phase Description 1 The supplied AC power source is converted into the DC power source for the present 2 The DC power source is reconverted into the three phase AC power source with variable frequency E 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 The following drawing shows a schematic view of the inverter principle Refrigerant circulation rate high EA high speed Amount of heat Amount of heat R dard gt exchanged air large exchanged air large o oe aE F 2388 F Amount of heat T 2 L Amount of heat exchanged air small exchanged air small low speed a i freq 50 Hz a ive constant en Hz freg variable EE Refrigerant circulation rate low R2812 Function and Control SiEN12 710A Main Functions 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 w
113. frost 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 operating compensation draft prevention pressure difference upkeep 4 Determine prohibited frequency There is a certain prohibited frequency such as a power supply frequency Function and Control 43 Control Specification SiEN12 710A 44 For Cooling Only Model 1 Determine command frequency Command frequency will be determined in the following order of priority 1 1 Limiting frequency by drooping function Input current discharge pipes freeze prevention dew prevention fin thermistor temperature 1 2 Indoor frequency command 2 Determine upper limit frequency Seta minimum value as an upper limit frequency among the frequency upper limits of the following functions Compressor protection input current discharge pipes freeze prevention dew prevention fin thermistor temperature 3 Determine lower limit frequency Set a maximum value as an lower limit frequency among the frequency lower limits of the following functions Pressure difference upkeep 4 Determine prohibited frequency There is a certain prohibited frequency such as a power supply frequency Indoor Frequency Command AD signal The difference between a room temperature and the temperature set by the remote control will be taken as the AD signal and is used for fre
114. function will not be activated e NIGHT QUIET Mode reduces slightly the cooling efficiency of the unit OUTDOOR UNIT QUIET Operation 1 With the Priority Room Setting present but inactive or not present When using the OUTDOOR UNIT QUIET operation feature with the Multi system set all indoor units to OUTDOOR UNIT QUIET operation using their remote controls When clearing OUTDOOR UNIT QUIET operation clear one of the operating indoor units using their remote control However OUTDOOR UNIT QUIET operation display remains on the remote control for other rooms We recommend you release all rooms using their remote controls 2 With the Priority Room Setting active See Priority Room Setting on the next page B Cooling Heating Mode Lock Available only for heat pump models The Cooling Heating Mode Lock requires initial programming during installation Please consult your retailer or dealer for assistance The Cooling Heating Mode Lock sets the unit forcibly to either Cooling or Heating Mode This function is convenient when you wish to set all indoor units connected to the Multi system to the same operation mode Operation Manual 87 Instruction SIEN12 710A B Priority Room Setting The Priority Room Setting requires initial programming during installation Please consult your retailer or dealer for assistance The room designated as the Priority Room takes priority in the following situations 1 Operation Mode Priority As
115. g water 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 SIEN12 710A Introduction 1 1 2 Cautions Regarding Safety of Users AP Warning 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 cau
116. ge personal injury or loss of life cause minor or moderate property damage or personal injury O Never do Be sure to follow the instructions a Be sure to earth the air conditioner Never cause the air conditioner including the f remote control to get wet Never touch the air conditioner including the remote control with a wet hand A WARNING e In order to avoid fire explosion or injury do not operate the unit when harmful among which flammable or corrosive gases are detected near the unit O e It is not good for health to expose your body to the air flow for a long time e Do not put a finger a rod or other objects into the air outlet or inlet As the fan is rotating at a high speed it will cause injury e Do not attempt to repair relocate modify or reinstall the air conditioner by yourself Incorrect work will cause electric shocks fire etc For repairs and reinstallation consult your Daikin dealer for advice and information e The refrigerant used in the air conditioner is safe Although leaks should not occur if for some reason any refrigerant happens to leak into the room make sure it does not come Q in contact with any flame as of gas heaters kerosene heaters or gas range e Ifthe air conditioner is not cooling heating properly the refrigerant may be leaking so call your dealer When carrying out repairs accompanying adding refrigerant check the content of the repairs with our service staff Do not
117. get foul after several seasons of use resulting in poor performance It is recommended to have periodical maintenance by a specialist aside from regular cleaning by the user For specialist maintenance contact the service shop where you bought the air conditioner The maintenance cost must be born by the user Important information regarding the refrigerant used This product contains fluorinated greenhouse gases covered by the Kyoto Protocol Refrigerant type R410A GWP value 1975 1 GWP global warming potential Periodical inspections for refrigerant leaks may be required depending on European or local legislation Please contact your local dealer for more information Operation Manual SiEN12 710A Instruction Fault diagnosis FAULT DIAGNOSIS BY REMOTE CONTROL In the ARC433A series the temperature display sections on the main unit indicate corresponding codes 1 When the TIMER CANCEL button is held down for 5 seconds a 00 indication flashes on the temperature display section MODE Gau QUIET SENSOR g TIMER CANCEL button It cancels the timer setting Ca EY TIMER 2 Press the TIMER CANCEL button repeatedly until a continuous beep is produced The code indication changes as shown below and notifies with a long beep CODE MEANING SYSTEM 00 NORMAL UO REFRIGERANT SHOTAGE U2 DROP VOLTAGE OR MAIN CIRCUIT
118. h OW Sensor output Human motion Human detection ON signal OFF R2821 B This sensor detects human motion by receiving infrared rays and displays the pulse wave output B A microcomputer in an indoor unit carries out a sampling every 20 msec and if it detects 10 cycles of the wave in one second in total corresponding to 20msec x 10 200msec it judges human is in the room as the motion signal is ON 2 The motions for example in cooling within 20 minutes 20 min 20 min gt _ gt 40 min Ek Human detection ON i ll l signal SP RESET Cooling Set temp 2 C_ f r Heating Set temp 2 C i i Set temp i d t MaxHz Frequency at set temp 2 C Compressor MinHz speed OHz The lower limit by detecting incase of human i K Prohibition of thermostat off thermostat ont Remote control INTELLIGENT ON EYE button OFF Operation ON j OFF Fan speed 1 Set speed Set speed Set speed 50 rpm OFF R7117 EB When a microcomputer doesn t have a signal from the sensor in 20 minutes it judges that nobody is in the room and operating 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 50 rpm Function an
119. h the remote control the microcomputer automatically determines the operation mode from cooling and heating according to the 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 Explanation of the Function Function and Control 1 Remote control setting temperature is set as automatic cooling heating setting temperature 18 to 30 C Main unit setting temperature equals remote control setting temperature Operation ON OFF point and mode switching point are as follows O Heating gt Cooling switching point Room temperature gt Main unit setting temperature 2 5 deg Cooling Heating switching point Room temperature lt Main unit setting temperature 2 5 deg Thermostat ON OFF point is the same as the ON OFF point of cooling or heating operation During initial operation Room temperature gt Remote control setting temperature Cooling operation Room temperature lt Remote control setting temperature Heating operation Cooling Operation Setpoint 2 5 C A A Setpoint 1 5 C Setpoint 2 0 C Thermostat OFF Thermostat OFF es en eck es es es ee Setpoint 2 5 C Heating Operation R6842 Ex When the set point is 25 C Cooling Operation 23 C Thermo
120. he 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 of the fan motor Detection error due to faulty indoor unit PCB 113 Troubleshooting SiEN12 710A Troubleshooting Check No 01 Refer to P 146 114 AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Turn off power supply and rotate fan by hand Does fan rotate smoothly YES NO Turn power ON and operate fan Does it rotate YES Y Stop fan motor Y Check No 01 Check output of fan motor connector Is rotation number command Turn off power supply and disconnect fan motor connector then turn power ON Check No 01 Check output of fan motor connector Is motor power voltage DC 200V NO Replace fan motor generated motor control N power voltage DC a gt Replace indoor unit PCB 15V generated Turn off power supply and disconnect fan motor connector then turn power ON again Y Check No 01 Check output of fan motor connector Is rotation number command voltage DC YES Replace indoor unit PCB 1 6V generated Check No 01 Check outpu
121. he shift 2 11 9 High Temperature of the Discharge Pipe When the compressor is operating if the discharge pipe temperature exceeds a certain value open the electronic expansion valve and remove the refrigerant to the low pressure side and lower discharge temperature 2 11 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 2 11 11 Target Discharge Pipe Temperature Control Function and Control Obtain the target discharge pipe temperature from the indoor and outdoor heat exchange temperature and adjust the electronic expansion valve opening so that the actual discharge pipe temperature become close to that temperature Indirect SH control using the discharge pipe temperature Set the target discharge pipe SC temperature as to become an aiming SH Regard that the inclination cannot be SH changed due to the operating condition R1389 Determine a correction value of the electronic expansion valve compensation and drive it according to the deflection of the target discharge temperature and actual discharge temperature and the discharge temperature variation
122. hen starting the heating or cooling This enables a quick set temperature Air discharge temperature ASG E ee ee T 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 m Four way valve operation compensation Refer to page 46 High E Input current control Refer to page 48 m Compressor protection function Refer to page 47 B Heating peak cut control Refer to page 49 E Freeze up protection control Refer to page 49 Em Defrost control Refer to page 51 Forced Cooling For more information refer to Forced operation mode on page 57 Operation Function and Control 25 Main Functions SiEN12 710A 1 2 Power Airflow Dual Flaps Wide Angle Louvers and Auto Swing Power airflow Dual Flaps Wide Angle Louvers Auto Swing COMFORT AIRFLOW Mode 26 Th
123. her error does not occur during the following 60 minute compressor running time total time Refrigerant shortage refrigerant leakage Poor compression performance of compressor Stop valve closed Electronic expansion valve defective 139 Troubleshooting SiEN12 710A Troubleshooting A Caution Check No 04 Refer to P 146 Check No 06 Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred YES Discharge pipe thermistor Indoor outdoor unit heat exchanger thermistor Room temperature thermistor Outdoor air thermistor Any thermistor disconnected gt Replace in position Refer to P 149 YES Stop valve closed gt Open the stop valve Check for gas leakage Oil oozing at relay pipe YES gt Repair the pipe flare or connections replace the square union YES Oil oozing at internal piping Check No 04 Electronic expansion valve functioning Check the power transistor harness for looseness Correct it as required Also replace cracked pipe if any Check the pipes for Compressor vibrating too much improper contact Correct as required Also replace cracked pipe if any Replace the electronic expansion valve Change for a specified amount of fresh refrigerant YES Gas shortage error again Replace the room temperature or outdoor air t
124. hermistor or the indoor unit or outdoor unit heat exchanger thermistor 1 Replace the PCB 2 Replace the compressor Malfunctioning NO Check No 06 Check the thermistors Functioning gt Procedure complete R7149 140 Service Diagnosis SiEN12 710A Troubleshooting 4 22 Over voltage Detection Low voltage Detection Remote Control Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Service Diagnosis Uc An abnormal voltage rise or drop is detected by checking the detection circuit or DC voltage detection circuit B An over voltage signal is fed from the over voltage detection circuit to the microcomputer or the voltage being detected by the DC voltage detection circuit is judged to be below 150V for 0 1 second The system will be shut down if the error occurs 255 times Clearing condition Continuous run for about 60 minutes normal Supply voltage not as specified Over voltage detector or DC voltage detection circuit defective PAM control part s defective Short circuit inside the fan motor winding Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred A Caution Check the supply voltage Supply voltage as specified NO gt Correct the power supply Rotate fan by hand NO Does fan
125. higher for cleaning air filters and outside panels Ask your DAIKIN dealer how to clean it Check Check that the base stand and other fittings of the outdoor unit are not decayed or corroded Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit Check that the drain comes smoothly out of the drain hose during COOL or DRY operation e If no drain water is seen water may be leaking from the indoor unit Stop operation and consult the service shop if this is the case Before a long idle period 1 Operate the FAN only for several hours on a fine day to dry out the inside Press MODE selector button and select FAN operation e Press ON OFF button and start operation 2 After operation stops turn off the breaker for the room air conditioner Clean the air filters and set them again 4 Take out batteries from the remote control e When a multi outdoor unit is connected make sure the heating operation is not used at the other room before you use the fan operation Es Operation Manual 95 Instruction SIEN12 710A 2 16 Troubleshooting These cases are not troubles The following cases are not air conditioner troubles but have some reasons You may just continue using it Case Explanation Operation does not start soon e When ON OFF button was pressed soon after operation was stopped When the mode was reselected This is
126. inals or the name plate Make a note Removal Procedure 175 Outdoor Unit SiEN12 710A Step Procedure Points 5 There is a nut fixing the compressor Remove the nut with an open end spanner m Before working make sure that the refrigerant is empty in the circuit B Be sure to apply nitrogen replacement when heating up the brazed part of the discharge side and disconnect 7 Heat up the brazed part of the suction side and disconnect 8 Lift the compressor up to remove 6 Heat up the brazed part Ti hud R7641 R7642 A Warning Since it may happen that refrigeration oil in the compressor will catch fire prepare wet cloth so as to extinguish fire immediately A Warning Ventilate when refrigerant leaks during the work If refrigerant contacts fire it will cause to arise toxic gas AE 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 AN Caution From the viewpoint of global environment protection do n
127. indoor or outdoor unit that must be kept away from moisture In certain conditions moisture in the air may condense and drip e After a long use check the unit stand and fittings for damage e Do not touch the air inlet and aluminum fins of outdoor unit It may cause injury e The appliance is not intended for use by young children or infirm persons without supervision e Young children should be supervised to ensure that they do not play with the appliance To avoid oxygen deficiency ventilate the room sufficiently if equipment with burner is used together with the air conditioner Q e Before cleaning be sure to stop the operation turn the breaker off or pull out the supply cord Do not connect the air conditioner to a power supply different from the one as specified It may cause trouble or fire e Arrange the drain hose to ensure smooth drainage Incomplete draining may cause wetting of the building furniture etc e Do not place objects in direct proximity of the outdoor unit and do not let leaves and other debris accumulate around the unit Leaves are a hotbed for small animals which can enter the unit Once in the unit such animals can cause malfunctions smoke or fire when making contact with electrical parts e Do not operate the air conditioner with wet hands T e Do not wash the indoor unit with excessive water only use a slightly wet cloth Do not place things such as vessels containing water or anything else on top
128. ings to be canceled and the cp disappears from the LCD In COOL and HEAT mode To maximize the cooling heating effect the capacity of outdoor unit must be increased and the air flow rate be fixed to the maximum setting The temperature and air flow settings are not variable e In DRY mode e The temperature setting is lowered by 2 5 C and the air flow rate is slightly increased In FAN mode e The air flow rate is fixed to the maximum setting When using priority room setting See Note for multi system Operation Manual 77 Instruction SIEN12 710A 2 8 OUTDOOR UNIT QUIET Operation OUTDOOR UNIT QUIET operation lowers the noise level of the outdoor unit by changing the frequency and fan speed on the outdoor unit This function is convenient during night B To start OUTDOOR UNIT QUIET operation 1 Press QUIET button a is displayed on the LCD B To cancel OUTDOOR UNIT QUIET operation DAIKIN 2 Press QUIET button again We Ce r re disappears from the LCD ON OFF oa TEMP w Co 1 2 MODE FAN SWING QUIET Get SENSOR E a Ca for 2sec ke Ey TIMER etr NOTE m Note on OUTDOOR UNIT QUIET operation e If using a multi system this function will work only when the OUTDOOR UNIT QUIET operation is set on all operated indoor units e This function is available in COOL HEAT and AUTO modes This is not available in FAN and DRY mode e
129. ion 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 gas is insufficient and gas insufficiency is detected by checking a power consumption Gas insufficient zone R1391 When operating with insufficient gas although the rise of discharge pipe temperature is great and the electronic expansion valve is open it is presumed as an insufficient gas if the discharge pipe temperature is higher than the target discharge pipe temperature Refer to Insufficient Gas on page 139 for detail Function and Control SIEN12 710A Control Specification Detail 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 insufficient gas Judgment by Discharge Pipe Temperature When discharge pipe temperature is higher than 101 C the electronic expansion value opening is 450 plus max and the adjustment is made for insufficient gas 2 12 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
130. ion and Control SiEN12 710A Main Functions 1 12 Other Functions 1 12 1 Hot Start Function Heat Pump Only 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 air flow 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 12 2 Signal Receiving Sign When the indoor unit receives a signal from the remote control the unit emits a signal receiving sound 1 12 3 ON OFF Button on Indoor Unit H Note An ON OFF button is provided on the front panel of the unit Use this button when the remote control is missing or if its battery has run out Every press of the button switches from ON to OFF or from OFF to ON For FTKS25 35D FTXS25 35E ri DO Or ON OFF ON OFF button B Push this button once to start operation Push once again to stop it R4269 B This button is useful when the remote control is missing B The operation mode refers to the following table Mode Temperature setting Air flow rate Cooling Only COOL 22 C AUTO Heat Pump AUTO 25 C AUTO E Inthe case of multi system operation there are times when the unit does not activate with this button lt Forced operation mode gt Forced o
131. istor In cooling the gas pipe thermistors are used for gas pipe isothermal control The system controls electronic expansion valve opening so that gas pipe temperature in each room becomes equal 39 Main Functions SiEN12 710A D Indoor Heat Exchanger Thermistor E Liquid Pipe Thermistor 40 The indoor heat exchanger thermistors are used for controlling target discharge 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 temperature can be obtained The indoor heat exchanger thermistor is used to prevent freezing During the 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 the 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 gt 10 C it is assumed as icing During heating the indoor heat exchanger thermistors are used for detecting disconnection of the discharge pipe thermistor When the discharge pipe temperature become lower than an indoor heat exchanger temperature a disconnected discharge pipe thermistor can be detected The indoor hea
132. k Charge kg 1 20 HH 36 m min H 33 E 30 Air Flow Rate HH 1 271 cfm H 1 165 L 1 059 Type Propeller E Si Motor Output Ww 50 Starting Current A 5 9 Dimension HxWxD mm 550x765x285 Packaged Dimension HxWxD mm 612x906x362 Weight kg 38 Gross Weight kg 43 Operation Sound pressure dBA 47 Sound Quiet Mode dBA 43 Sound Power dBA 62 Gr Liquid mm 0 6 4x2 iping Connection Gas mm 9 5x2 Drain mm 018 Heat Insulation Both Liquid amp Gas Pipes No of Wiring Connection 3 for Power Supply 4 for Interunit Wiring SCH 30 for Total of Each Room Max Piping Length m 20 for One Room Min Piping Length m 3 for One Room Amount of Additional Charge g m 20 20m or more g e 15 between Indoor Unit and Outdoor Unit Max Installation Height Difference m 7 5 between Indoor Units Drawing No 3D055840 Not Si Conversion Formulae ote 1 The data are based on the conditions Shown in the table below kcallh kWx860 Cooling Piping Length Btu h kWx3414 Indoor 27 CDB 19 CWB RE SE Outdoor 35 CDB 10 Specifications SiEN12 710A Heat Pump 2 Heat Pump 2 1 Indoor Units Wall Mounted Type 50Hz 220 230 240V Model FTXS25EVMA FTXS35EVMA Cooling Heating Cooling Heating Rated
133. l of the Thermistors oocccccconncnncconncnnnnncncnnnnnononnnonononnnnnanonos 173 1 7 Removal of the Compressor annae ennnenneennennennnennneene nennen 175 1 8 Removal of the Four Way Valve Electronic Expansion Valve 177 Part 8 HERR eeh EECH 1 OMS neee ie ta A nln ete tnt eterno 180 1 1 Test Run from the Remote Control 180 1 2 J mper SOUINGS Eegeregie lis 181 1 3 Application of Silicon Grease to a Power Transistor and a Diode Bridges ic Ae iia 182 Part 9 Appendix sssnsnnsanssnnsnnsnnennennnensensennnnsnnsnnnennsnnsennsnnsnnsnnnn 183 1 Piping DIGB erneer A oe te deld eee 184 ded aL O 184 142 Outdoor Units Eidos 185 2 Wiring EENS ti AA 186 A EE EEN 186 SSC QUIGOOF Units ii ET AAEE A 187 Index BERR RRR RRR RRR RRR RRR RRR RR RR RRR RR RR RRR RRR RR RR RRR RR RR RRR RR RR RRR RRR RR RR RRR RR RR RRR RRR i Drawings amp Flow Charts sccscceeeseeeeeee ee eeeee eee eee eee V iv Table of Contents SIEN12 710A Introduction 1 Introduction 1 1 Safety Cautions Cautions and H Be sure to read the following safety cautions before conducting repair work Warnings B The caution items are classified into Af Warning and AN Caution The AN Warning 1 1 1 items are especially important since they can lead to death or serious injury if they are not followed closely The AN Caution items can also lead to serious accidents under some conditions if they are n
134. leteness accuracy reliability or fitness for particular purpose of its content and the products and services presented therein Specifications are subject to change without prior notice Daikin Europe N V explicitly rejects any liability for any direct or indirect damage In the broadest sense arising from or related to the use and or interpretation of this publication All content is copyrighted by Daikin Europe N V HI SiEN12 710A S ic a gt a D CO co S S g LO S lt S 5 a E H a 8 5 g e 5 8 9 8 8 2 gt z 5 8 5 8 o E 2 E a 8 8 e E 5 2 8 2 E 5 3 gt 3 E 2 5 S ao E 3 2 5 g 2 a D E 2 rd 2 5 5 S o Q v 2 e N lt DI 2 KE 8 2 E 5 E e S o v 3 E 2 A ZS O 2 3 ch ei 3 8 w D D 2 S S S 3 E 5 N gt z o a 2 5 Da 5
135. mal operation Operation Manual 83 Instruction SIEN12 710A 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 air flow rate slightly in fan operation In FAN mode only Notes on INTELLIGENT EYE Application range is as follows Vertical angle 90 Horizontal angle 110 Side View Top View AA Sensor may not detect moving objects further than 7m away Check the application range 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 INTELLIGENT EYE operation will not go on during powerful operation Night set mode will not go on during you use INTELLIGENT EYE operation CAUTION s Do not place large objects near the sensor Also keep heating units or humidifiers outside the sensor s detection area This sensor can detect objects it shouldn t as well as not detect objects it should Do not hit or violently push the INTELLIGENT EYE sensor This can lead to damage and malfunction 84 Operation Manual SIEN12 710A Instruction 2 13 TIMER Operation Timer functions are useful for automatically switching the air conditioner on or off at night or in the morning You can also use
136. modes all the same for indoor units connected to outdoor units in the multi system If not set all indoor units to the same operation mode and confirm that the lamps flash Moreover when the operation mode is in AUTO set all indoor unit operation modes to COOL or HEAT for a moment and check again that the lamps are normal lf the lamps stop flashing after the above steps there is no malfunction An abnormal functioning happens during operation The air conditioner may malfunction with lightning or radio waves Turn the breaker OFF turn it ON again and try operating the air conditioner with the remote control Operation Manual 97 Instruction SiEN12 710A 98 Call the service shop immediately A WARNING EB When an abnormality such as a burning smell occurs stop operation and turn the breaker OFF Continued operation in an abnormal condition may result in troubles electric shocks or fire Consult the service shop where you bought the air conditioner m Do not attempt to repair or modify the air conditioner by yourself Incorrect work may result in electric shocks or fire Consult the service shop where you bought the air conditioner If one of the following symptoms takes place call the service shop immediately B The power cord is abnormally hot or damaged B An abnormal sound is heard during operation E The safety breaker a fuse or the earth leakage Turn the breaker b
137. mperature and controls the electronic expansion valve opening so that the target discharge temperature can be obtained The outdoor heat exchanger thermistor is used for detecting disconnection of the discharge thermistor when cooling When the discharge pipe temperature becomes lower than the outdoor heat exchanger temperature the discharge pipe thermistor is judged as disconnected The outdoor heat exchanger thermistor is used for high pressure protection during cooling operation The discharge pipe thermistor is used for controlling temperature of the discharge pipe 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 The discharge pipe thermistor is used for detecting disconnection of the discharge thermistor In cooling the gas pipe thermistors are used for gas pipe isothermal control The system controls electronic expansion valve opening so that gas pipe temperature in each room becomes equal The indoor heat exchanger thermistor is used for controlling target discharge 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 temperature can be obtained The indoor heat exchanger thermistors are used to prevent freezing During the
138. mpressor R7138 Service Diagnosis SiEN12 710A Troubleshooting 4 10 DC Fan Lock Remote Control Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Check No 15 Refer to P 154 Service Diagnosis El A fan motor or related error is detected by checking the high voltage fan motor rpm being detected by the Hall IC B The fan does not start in 60 seconds even when the fan motor is running B The system will be shut down if the error occurs 16 times H Clearing condition Continuous run for about 11 minutes normal E Fan motor breakdown B Harness or connector disconnected between fan motor and PCB or in poor contact E Foreign matters stuck in the fan AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Fan motor YES connector disconnected gt Turn off the power and reconnect the connector NO Foreign matters in or around the fan YES gt Remove Get started Check No 15 Check the outdoor unit PCB rpm pulse input NO Pulse signal inputted gt Replace the outdoor unit fan motor gt Replace the outdoor unit PCB R7139 121 Troubleshooting SiEN12 710A 4 11 Input Over Current Detection Remote Control ED Display Method of An input over current is detected by checking the pow
139. n and Control SIEN12 710A Control Specification Function and Control 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 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 45 Control Specification SiEN12 710A 2 3 Controls at Mode Changing Start up 2 3 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 operation starts The power consumption of compressor during preheat operation is 25 W OFF Condition When outdoor air tempera
140. n halt due to anti icing function s Is it almost Heating same as the outside air NO Service Diagnosis The unit does not heat Refrigerant flow rate vary by unit Discharge air temperatures are different by room mPeak cut 2 Valve body catches at complete close position Symptom Cooling The only unit having problem does not cool the room When the only faulty unit is in operation the unit makes pump down The low pressure of the unit becomes vacuum BIT is activated E Abnormal discharge pipe temperature Heating Insufficient gas due to liquid refrigerant stagnation inside the faulty indoor unit Only for heat pump model The unit does not heat the room MOL is activated E Abnormal discharge pipe temperature temperature Replace the EVn of the room R7154 Reset power supply and conduct cooling operation unit by unit Check the low pressure Does the pressure become into vacuum zone NO Replace the EVn of the room R7155 3 Valve does not open fully Symptom The unit does not cool nor heat only for heat pump model MOL is actuated E Abnormal discharge pipe temperature Check the number of rotation of shaft if it is 5 and half from full open to complete close using manual coil for electronic expansion valve When the number of rotation of shaft is less than the above value the valve may catch anywhere of the body 147 Check
141. ncy Return Reset zone Cancel the upper limit of frequency 2 5 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 compensation Detail The frequency control will be 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 Input current 12 drooping Drooping zone Keep IER 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 will be 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 will remain In the return reset zone the frequency limit will be 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 only for heat pump model The current droops when outdoor
142. nd Description nanne nen ennnennnnennennennneennen 108 4 2 Indoor Unit PCB Abnormality ccoo tits 109 4 3 Freeze up Protection Control or High Pressure Control 110 4 4 Fan Motor or Related Abnormality nnee 112 4 5 Thermistor or Related Abnormality Indoor Un 115 4 6 Front Panel Open Close Eau 116 4 7 Freeze up Protection Control 117 4 8 OL Activation Compressor Overload nennen eneen 119 4 9 Compressor Locke 120 4 10 DG FAN A entel ne 121 4 11 Input Over Current Detection nnn neee nne ennenennenneennennnen 122 4 12 Discharge Pipe Temperature Control 124 4 13 High Pressure Control in Cooling nnee eenen 125 4 14 Compressor Sensor System Abnormality anne enen 127 4 15 Position Sensor Abnormality EE 128 4 16 DC Voltage DC Current Sensor Abnormality en 130 4 17 Thermistor or Related Abnormality Outdoor Un 131 4 18 Electrical Box Temperature RiSO naan nnn ennn ennnennennneensenneennenn 133 4 19 Radiation Fin Temperature Rise nnn nnn ennnennenne enne eene ennen 135 4 20 Output Over Current Detection nnn eene ennnnennenneennennnen 137 4 21 lee e 139 4 22 Over voltage Detection Low voltage Detection 141 4 23 Anti icing Function in Other Rooms Unspecified Voltage between Indoor and Outdoor Units nennen 142 4 24 Outdoor Unit PCB Abnormality or Signal Transmission Circuit Abnormality a eeeenen 143 CEC EN 146 9 1 Howto Check set nn did 146 101 Caution for Diag
143. nd the outdoor unit Check that the drain comes smoothly out of the drain hose during COOL or DRY operation e If no drain water is seen water may be leaking from the indoor unit Stop operation and consult the service shop if this is the case Before a long idle period 1 Operate the FAN only for several hours on a fine day to dry out the inside Press MODE selector button and select FAN operation e Press ON OFF button and start operation 2 After operation stops turn off the breaker for the room air conditioner Clean the air filters and set them again 4 Take out batteries from the remote control e When a multi outdoor unit is connected make sure the heating operation is not used at the other room before you use the fan operation Es Operation Manual 93 Instruction SIEN12 710A CDXS 25 35 E AN CAUTION Only a qualified service person is allowed to perform maintenance e Before cleaning be sure to stop the operation and turn the breaker OFF Bm Cleaning the air filter 1 Removing the air filter 94 2 Cleaning the air filter Rear suction Pull the bottom side of the air filter backwards over the bends Bottom suction Pull the filter over the bends situated at the backside of the unit Remove dust from the air filter using a vacuum cleaner and gently rinse them in cool water Do not use detergent or hot water to avoid filter shrinking or deformation After
144. nd wash lightly with water If it is very dirty soak it for 10 to 15 minutes in water mixed with a neutral cleaning agent Do not remove filter from frame when washing with water After washing shake off remaining water and dry in the shade Since the material is made out of paper do not wring out the filter when removing water from it Replacement 1 90 Remove the tabs on the filter frame and replace with a new filter e Dispose of the old filter as flammable waste Operation Manual SIEN12 710A Instruction NOTE e Operation with dirty filters 1 cannot deodorize the air 2 cannot clean the air 3 results in poor heating or cooling 4 may cause odour e To order Titanium Apatite Photocatalytic Air Purifying Filter contact to the service shop there you bought the air conditioner e Dispose of the old filter as burnable waste Item Part No Titanium Apatite Photocatalytic Air Purifying Filter without frame 1 set KAF970A46 Check Check that the base stand and other fittings of the outdoor unit are not decayed or corroded Check that nothing blocks the air inlets and the outlets of the indoor unit and the outdoor unit Check that the drain comes smoothly out of the drain hose during COOL or DRY operation e If no drain water is seen water may be leaking from the indoor unit Stop operation and consult the service shop if this is the case Before a
145. ned 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 SCH e COOL DRY and FAN mode may be used at the same time e 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 lt CAUTION gt 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 Heating Mode in any room after this will give priority to heating In this situation the air conditioner running in FAN Mode will go on standby and the operation lamp will flash 2 With the Priority Room Setting active See Priority Room Setting on the next page B NIGHT QUIET Mode Available only for cooling operation NIGHT QUIET Mode requires initial programming during installation Please consult your retailer or dealer for assistance NIGHT QUIET Mode reduces the operation noise of the outdoor unit during the night time hours to prevent annoyance to neighbors e The NIGHT QUIET Mode is activated when the temperature drops 5 C or more below the highest temperature recorded that day Therefore when the temperature difference is less than 5 C this
146. ng No 3D051140 3D051141 Note 1 The operating sound is based on the rear side suction inlet and the external static pressure 30 Pa Conversion Formulae Operating sound for under side suction inlet operating sound for rear side suction inlet 6 dB However when installation to which the external static pressure becomes low is carried out Lice lente 6 dB or more may go up cim m minx35 3 12 Specifications SiEN12 710A Heat Pump D 2 2 Outdoor Units 50Hz 220 230 240V Model 2MXS50FV1B i Cooling Heating Capacity kW Power Consumption Ww Running Current A Casing Color Ivory White Type Hermetically Sealed Swing Type Compressor Model 2YC36BXD Motor Output Ww 1 100 Model FVC50K Refri t Oil emgerant 2 Charge L 0 65 E Type R 410A Refi t SEI Charge kg 1 60 HH 37 34 m min H 34 34 z L 34 34 Air Flow Rates HH 1 303 1 214 cfm H 1 214 1 214 L 1 214 1 214 Type Propeller SCH Motor Output Ww 50 Starting Current A 9 8 Dimensions HxWxD mm 550x765x285 Packaged Dimensions HxWxD mm 612x906x364 Weight kg 42 Gross Weight kg 47 Operation Sound Pressure dBA 48 50 Sound Quiet Mode dBA 44 46 Sound Power dBA 63 Ges Liquid mm 6 4x2 Piping Connection Gas mm O 9 51 12 7 1 Drain mm 18 0 Heat Insulation Both Liquid and Gas Pipes No of Wiring Connection 3 for Power Supply 4 for Interunit Wiring SE
147. ng Only m m 5 S E E Category Functions oi e Category Functions o e LO CH LO CH D D x x Xx x a a D N D N Basic Inverter with Inverter Power Control O O Health A Function Tee 10 Clean Air Purifying Filter Operation Limit for Cooling CDB 46 Operation Limit for Heating CWB Photocatalytic Deodorizing Filter Air Purifying Filter with Photocatalytic PAM Control Se Q Deodorizing Function Ae Compressor Oval Scroll Compressor tien Titanium Apatite Photocatalytic Er e Swing Compressor O Air Purifying Filter Rotary Compressor Mold Proof Air Filter O Reluctance DC Motor O Wipe clean Flat Panel Comfortable Power Airflow Flap Washable Grille Airflow Power Airflow Dual Flaps Mold Proof Operation Power Airflow Diffuser Heating Dry Operation Wide Angle Louvers Good Sleep Cooling Operation Vertical Auto Swing Up and Down Timer 24 Hour On Off Timer O Horizontal Auto Swing Right and Left Night Set Mode O 3 D Airflow Worry Free Auto Restart after Power Failure O Reliability amp O Comfort Airflow Mode Durability Self Diagnosis Digital LED Display O we 3 Step Airflow H P Only Wiring Error Check omron Auto Fan Speed Odei Anticorrosion Treatment of Outdoor 16 antro Indoor Unit Quiet Operation o e Heat Exchanger Night Quiet Mode Automatic
148. ng 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 control 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 Approx and current Normal 30 ECONO MODE Time R4607 Details ECONO mode can be activated while the unit is running The remote control can send the ECONO command when the unit is in COOL HEAT DRY or AUTO operation B When the ECONO command is valid the upper limit of frequency is restricted 32 Function and Control SIEN12 710A Main Functions 1 9 INTELLIGENT EYE This is the function that detects existence of humans in the room by a human motion sensor INTELLIGENT EYE and reduces the capacity when there is no human in the room in order to save electricity Processing 1 Detection method by INTELLIGENT EYE If the sensor detects the outputs 10 times sec sampling 20msec or more it judges humans exist 1sec Hig
149. ning lead wire connector Reconnect disconnected aetna Sn Go to Check No 15 R7159 5 1 9 Power Supply Waveforms Check Check No 10 Measure the power supply waveform between pins 1 and 2 on the terminal board and check the waveform disturbance H Check to see if the power supply waveform is a sine wave Fig 1 H Check to see if there is waveform disturbance near the zero cross sections circled in Fig 2 Fig 1 Fig 2 R1444 R1736 Service Diagnosis 151 Check SiEN12 710A 5 1 10 Inverter Units Refrigerant System Check Check No 11 Refrigerant system check Is the discharge thermister disconnected from the ho YES gt Correct the problem Is the temperature of the four way valve suction pipe abnormaly high YES gt Four way valve defective Replace the four way valve Is any moisture found in sight glass YES Conduct the check after operating the equipment for a sufficient length of time gt Conduct vacuum drying Check for gas leaks See the section on insufficient gas detection gt Replace the refrigerant R7160 5 1 11 Capacitor Voltage Check Check No 12 Before this checking be sure to check the main circuit for short circuit B Checking the capacitor voltage With the circuit breaker still on measure the voltage according to the drawing Be careful never to touch any live par
150. nit 18 B Indoor Unit Air filter 2 Titanium Apatite Photocatalytic Air Purifying Filter e These filters are attached to the inside of the air filters Air inlet Front panel Panel tab Room temperature sensor e It senses the air temperature around the unit 7 INTELLIGENT EYE sensor e It detects the movements of people and automatically switches between normal operation and energy saving operation 8 Display 9 Air outlet 10 Flaps horizontal blades 11 Louvers vertical blades The louvers are inside of the air outlet me OO Om P Ww Em Outdoor Unit 17 Air inlet Back and side 18 Air outlet 19 Refrigerant piping and inter unit cable 20 Drain hose 19 20 21 Ess 12 Indoor Unit ON OFF switch e Push this switch once to start operation Push once again to stop it The operation mode refers to the following table Mode Temperature Air flow setting rate FTK COOL 22 C AUTO FTX AUTO 25 C AUTO e This switch is useful when the remote control is missing 13 Operation lamp green 14 TIMER lamp yellow 15 INTELLIGENT EYE lamp green 16 Signal receiver e It receives signals from the remote control e When the unit receives a signal you will hear a short beep e Operation start beep beep Settings changed beep e Operation stop beeeeep 21 Earth terminal
151. nnectors and other fittings Inverter checker Part No 1225477 Check No 13 Check the power transistor Normal YES Turn off the power and reconnect the harnesses Turn on the power again and get restarted gt Correct the power supply or replace the SPM Replace the outdoor unit PCB Y Check the supply voltage Voltage as rated YES Short circuit or breakage between compressor s coil phases NO NO gt Replace the SPM Replace the outdoor unit CB YES gt Correct the power supply Replace the compressor Check No 08 Check the discharge pressure Check No 07 Check the installation condition R7148 Service Diagnosis SIEN12 710A Troubleshooting 4 21 Insufficient Gas Remote Control Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Service Diagnosis UL Gas shortage detection A gas shortage is detected by checking the power consumption value and the compressor running frequency Gas shortage detection Power consumption lt 4578 256 W Hz x Compressor running frequency 638 W However when the status of running frequency gt 48 Hz is kept on for a certain time If a gas shortage error takes place 4 times successively the system will be shut down The error counter will reset itself if this or any ot
152. nosis SiEN12 710A 1 Caution for Diagnosis The operation lamp flashes when any of the following errors is detected 1 When a protection device of the indoor or outdoor unit is activated or when the thermistor malfunctions disabling equipment operation 2 When a signal transmission error occurs between the indoor and outdoor units In either case conduct the diagnostic procedure described in the following pages Location of In case of Operation Lamp FTKS 25 35 D Series FTXS 25 35 E Series OPERATION lamp green 4 00 o oworr R4298 In case of FDKS 25 35 E Series FDK X S 25 35 C Series CDXS 25 35 E Series OPERATION lamp green Q0340 A Caution Operation stops suddenly Operation lamp blinks Cause of above trouble could be Operation mode butting Check followings Are the operation modes all the same for indoor units connected to Multi system outdoor unit If not set all indoor units to the same operation mode and confirm that the operation lamp is not blinking Moreover when the operation mode is in Auto set all indoor unit operation mode to Cool or Heat and check again if the operation lamp is normal If the lamp stops blinking after the above steps there is no malfunction Operation stops and operation lamp blinks only for indoor unit which the different operation mode is set later The first set operation
153. olume control for outing to be set by the exclusive button 1 Start of Function The function starts when the HOME LEAVE button is pressed in cooling mode or heating mode including stopping and powerful operation If this button is pressed while the operation is stopped the function becomes effective when the operation is started If this button is pressed in powerful operation the powerful operation is reset and this function becomes effective B The HOME LEAVE button is ineffective in dry mode and fan mode 2 Details of Function A mark representing HOME LEAVE is indicated on the liquid crystal display of the remote control The indoor unit is operated according to the set temperature and air volume for HOME LEAVE which were pre set in the memory of the remote control The LED Red of indoor unit representing HOME LEAVE lights up It goes out when the operation is stopped 3 End of Function The function ends when the HOME LEAVE button is pressed again during HOME LEAVE operation or when the powerful operation button is pressed Scene lt Cooling gt Home leave operation gt set temp Home leave operation Set temp e l Normal operation Normal operation Time D A Start Home leave operation Stop Home leave operation Scene lt Heating gt la E Home leave operation set Home leave operation Set temp P Normal operation Normal operation Time D a Start Home leave oper
154. on Malfunction Decision Conditions Supposed Causes Service Diagnosis Fb High pressure control stop frequency drop etc is activated in the cooling mode if the temperature being sensed by the heat exchanger thermistor exceeds the limit B Activated when the temperature being sensed by the heat exchanger thermistor rises above 65 C Em Deactivated when the temperature drops below 53 C The installation space is not large enough Faulty outdoor unit fan Faulty electronic expansion valve Faulty outdoor unit heat exchanger thermistor Faulty outdoor unit PCB Faulty stop valve Dirty heat exchanger 125 Troubleshooting SiEN12 710A Troubleshooting Check No 04 Refer to P 146 Check No 06 Refer to P 149 Check No 07 Refer to P 150 Check No 09 Refer to P 151 126 AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check the installation space j Check No 07 Check the installation condition Abnormal Change the air outlet grille position Change the installation location Clean the heat exchanger Check No 09 Check the outdoor fan Abnormal Replace the fan motor Repair the connector or fan motor lead wires Normal Check No 04 Check the electronic expansion valve Abnormal gt Replace the electronic expansion valve or coil
155. on condition check Check the allowable dimensions Abnormal of the air suction and discharge area the discharged air from other outdoor YES unit cause an increase of the suction air temperature Is the heat exchanger YES very dirty Is the air flow blocked by YES obstacles or winds blowing in the opposite direction NO 150 Change the position of the air discharge grille or the installation location Change the position of the air discharge grille or the installation location Clean the heat exchanger 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 R7157 Service Diagnosis SiEN12 710A Check 5 1 7 Discharge Pressure Check Check No 08 Discharge pressure check NO gt Replace compessor YES NO Is the stop valve open gt Open the stop valve Y YES Is the connection pipe Ne gt Replace the pipe installed at deformed the site YES Are the heat exchanger and Dirty Clean air filter dirty Not dirty gt Replace the compressor R7158 5 1 8 Outdoor Unit Fan System Check With DC Motor Check No 09 Check the outdoor unit fan system Fan motor YES Outdoor unit fan run
156. ot discharge the refrigerant gas in the atmosphere Make sure to recover the refrigerant gas with the recovery system 176 Removal Procedure SiEN12 710A Outdoor Unit 1 8 Removal of the Four Way Valve Electronic Expansion Valve Procedure A Warning Be sure to wait 10 minutes or more after turning off all power supplies before disassembling work Step Procedure Points EB Remove the sound Mo d l Ni d i h UN J i blanket All i IS Ji l y Warning 1 Removed the peripheries IN Ne OI IRU i Be careful about the four way Remove A Shol NS valve pipes and so on which Terminal cover of WA NE KI were heated up by a gas compressor FIA NO brazing machine so as not to Four way valve coil VO A get burnt your hands e Electronic i Caution expansion valve coil not to burn them by a gas brazing machine 1 Lift up the electronic expansion valve coils to remove it 2 Remove the putty 3 Heat up the 2 brazed parts of the electronic expansion valve coil and remove it LE 20 H S Lk R7644 R7646 Zi 7 j mm IN W w ue 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 W R7703 r
157. ot followed Therefore be sure to observe all the safety caution items described below EB About the pictograms A This symbol indicates the item for which caution must be exercised The pictogram shows the item to which attention must be paid ES This symbol indicates the prohibited action The prohibited item or action is shown in the illustration or near the symbol G This symbol indicates the action that must be taken or the instruction The instruction is shown in the illustration or near the symbol m 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 Cautions Regarding Safety of Workers A Warning 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 shook 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 completely at a well ventilated place first If there is a gas
158. p must be set to L 2 9 Liquid Compression Protection Function 2 Outline 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 Detail Heat Pump Model 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 below 10 C Cooling Only Model EB Operation stops depending on the outdoor air temperature Compressor operation turns OFF under the condition that outdoor air temperature is below 10 C 50 Function and Control SiEN12 710A Control Specification 2 10 Defrost Control Outline Detail Function and Control Heat Pump Only Defrosting is carried out by the cooling cycle reverse cycle The defrosting time or outdoor heat exchanger temperature must be more than its fixed value when finishing Conditions for Starting Defrost The starting conditions must be made with the outdoor air temperature and heat exchanger temperature Under the conditions that the system is in heating operation 6 minutes after the compressor is started and more than 30 minutes of accumulated fine pass since the start of the operation or ending the defrosting Conditions for Canceling Defrost The judgment must be made with heat exchanger temperature 40 class 4 C 12 C 50 class
159. peration mode will be set by pressing the ON OFF button for between 5 to 9 sec while the unit is not operating When the ON OFF button is pressed for 10 sec or more the operation will be stopped See page 57 for the detail of Forced Operation Mode 1 12 4 Titanium Apatite Photocatalytic Air Purifying Filter For FTKS25 35D FTXS25 35E 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 odours and even deactivates bacteria and viruses It lasts for three years without replacement if washed about once every six months 1 12 5 Mold Proof Air Filter Prefilter Function and Control For all indoor units The filter net is treated with mold resisting agent TBZ harmless colorless and odorless Due to this treatment the amount of mold growth is much smaller than that of normal filters 37 Main Functions SIEN12 710A 1 12 6 Self Diagnosis Digital Display The microcomputer continuously monitors main operating conditions of the indoor unit outdoor unit and the entire system When an abnormality occur the LCD remote control displays error code These indications allow prompt maintenance operations 1 12 7 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
160. pipe temperature nnn 55 discharge pipe temperature control 48 124 discharge pipe thermistor 39 41 54 132 discharge pressure check nen 151 display PCB nn nennen eenen en ennenenn 17 19 E ELS OPER e eer dado 119 Ee cet eae oe eles ee eee 120 EP mias tiles 121 En 122 Scn Moder aii ds 32 econo operation 79 electrical box temperature rise nn 133 electronic expansion valve check 146 electronic expansion valve control 52 error codes t tl uge Eege eieiei eet 109 EE 110 117 e W 112 113 Or arr eee e A 115 OTR 116 OEE Bees 115 Boran neten deus ana se ett att Judo tao 119 EE Ee ee 120 ET gege Dieter eseu s ETE nts 121 EEEN 122 EE 124 FG isc ent 125 On 127 e e HEET 128 TAG EE 130 e WE 131 USF treated Bentan thai Arda ehelemaal 131 deet area Seele 131 EE 131 Ee 131 EE 133 WA sates Aine titrate isk teeta aaa ee 135 ge etree er Serer eee erence errr Ee 137 PAS err iia eeen 131 WO Cette eebe toda tado geed libele 139 UA EE 141 WA ge eene 143 UP ce aa a EE 142 Un 142 error codes and description nnee 108 SiEN12 710A F ee 124 E E E E E E T 125 fam CONTO vase zet ereen aaa aaa 50 fan motor connector output check 146 fan motor or related abnormality AG DEIER a deans 112 DEMOO ETE 113 fan speed Control 27 fan speed setting nnen 16 18 181 filter mold proof air filter prefilt
161. quency command Temperature AD Temperature AD Temperature AD Temperature AD difference signal difference signal difference signal difference signal 0 Th 2 0 4 4 0 8 6 0 C OFF 0 5 1 2 5 5 4 5 9 6 5 D 1 0 2 3 0 6 5 0 A 7 0 E 1 5 3 3 5 7 5 5 B 7 5 F 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 ex Capacity S value 2 5 kW 25 3 5 kW 35 Frequency Initial Setting lt 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 Q of the operating room the room in which the thermostat is set to ON Q value Indoor unit output determined from indoor unit volume air flow 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 control If the operating frequency is not change more than a certain fixed time adjust the frequency up and down according to the ZAD value obtaining the fixed ZAD value When the XAD value is small lower the frequency When the XAD value is large increase the frequency Functio
162. r Selection Programme Dry Function o SS Remote GE Centralized Controller O SEH Fan Only O Lifestyle New POWERFUL Operation REMOTE control Adapter o gt Normal Open Pulse Contact Option Convenience Non Inverter Inverter POWERFUL Operation O Remote Control Adapter 5 Priority Room Setting go e Normal Open Contact Option Cooling Heating Mode Lock Option Compatible Adapter O HOME LEAVE Operation O Remote Wireless O ECONO Mode Ch Soe Wired SSES Indoor Unit On Off Switch O Signal Reception Indicator O Temperature Display Another Room Operation Note O Holding Functions Displayed on remote control of Indoor Unit No Functions List of Functions Heat Pump SIEN12 710A 6 List of Functions SIEN12 710A Part 2 Specifications 1 Cooling Onyar eden end did Sak eee cat a dd ak ead 8 TT Indoor UTS ee ee e ed E 8 VE ele e eg BT 10 2r TAG AIP EE 11 Ke Miete 010 A LCE 11 22 Outdoor UNIS catala 13 Specifications Cooling Only SiEN12 710A a 1 Cooling Only D 1 1 Indoor Units Wall Mounted Type 50Hz 230V Model FTKS25DVM FTKS35DVM Rated Capacity 2 5kW Class 3 5kW Class Front Panel Color White White H 8 7 307
163. r passage NO Check the intake air filter YE S Clean the air filter NO Check the dust accumulation on the indoor unit heat exchanger Is it very dirty YES gt Clean the heat exchanger NO Check No 06 Indoor unit heat exchanger thermistor check Does it conform to the thermistor YES characteristic chart gt Replace the indoor unit PCB No gt Replace the thermistor replace the indoor unit PCB R7131 Service Diagnosis 111 Troubleshooting SiEN12 710A 4 4 Fan Motor or Related Abnormality 4 4 1 AC Motor Remote Control Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting Check No 16 Refer to P 154 112 Ab 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 of the fan motor Detection error due to faulty control PCB Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred
164. r stops 6 times successively due to abnormal discharge pipe temperature the system will be shut down B The error counter will reset itself if this or any other error does not occur during the following 60 minute compressor running time total time Refrigerant shortage Four way valve malfunctioning Discharge pipe thermistor defective heat exchanger or outdoor temperature thermistor defective 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 or parts damage may be occurred A Caution Check No 06 4 Malfunctioning Check the thermistors gt Replace the defective e Discharge pipe thermistor thermistor e Outdoor unit heat exchanger thermistor Functioning e Outdoor temperature thermistor Check No 04 Check the electronic expansion valve Malfunctioning gt Replace the valve itself or the coil Functioning Check No 11 Malfunctioning Check the refrigerant line gt Refer to the refrigerant line e Refrigerant shortage check procedure e Four way valve malfunctioning O Water mixed Functionin 9 e Stop valve defective gt Replace the outdoor unit PCB R7141 Service Diagnosis SIEN12 710A Troubleshooting 4 13 High Pressure Control in Cooling Remote Control Display Method of Malfunction Detecti
165. r swings it means the capacitor functions If the pointer does not swing at all or if it swings all the way but does not return it means the capacitor malfunction CNR Service Diagnosis 153 Check SIEN12 710A 5 1 14 Turning Speed Pulse Input on the Outdoor Unit PCB Check Check No 15 lt Propeller fan motor gt Make sure the voltage of 270 30V is being applied 1 Stop the operation first and then the power and disconnect the connector S70 2 Make sure there is about DC 270 V between pins 4 and 7 3 With the system and the power still off reconnect the connector S70 4 Make a turn of the fan motor with a hand and make sure the pulse 0 15 V appears twice at pins 1 and 4 If the fan motor protection fuse is blown out the outdoor unit fan may also be in trouble Check the fan too If the voltage in Step 2 is not applied it means the PCB is defective Replace the PCB If the pulse in Step 4 is not available it means the Hall IC is defective Replace the DC fan motor If there are both the voltage 2 and the pulse 4 replace the PCB O lt _ Turning speed pulse input 0 15 V Of gt 15V O ITT Of gt DC270V R7044 Propeller fan motor S70 5 1 15 Hall IC Check Check No 16 1 Check the connector connection 2 With the power ON operation OFF and the connector connected check the following Output voltage of about 5 V between pins 1 and 3
166. r thermistor Replace the outdoor unit PCB Replace the indoor unit CB PR ali da R7145 J3 Discharge pipe thermistor J amp Outdoor unit heat exchanger thermistor J8 Liquid pipe thermistor J9 Gas pipe thermistor HS Outdoor temperature thermistor 132 Service Diagnosis SiEN12 710A Troubleshooting 4 18 Electrical Box Temperature Rise Remote Control L3 Display Method of An electrical box temperature rise is detected by checking the radiation fin thermistor with the Malfunction compressor off Detection Malfunction Em With the compressor off the radiation fin temperature is above 80 C Decision B The error is cleared when the temperature drops below 70 C Conditions Supposed B Fin temperature rise due to defective outdoor unit fan Causes E Fin temperature rise due to short circuit B Fin thermistor defective B Connector in poor contact B Outdoor unit PCB defective Service Diagnosis 133 Troubleshooting SiEN12 710A Troubleshooting Check No 06 Refer to P 149 Check No 07 Refer to P 150 Check No 09 Refer to P 151 134 AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Precaution before turning on the power again Make sure the power has been off for at least 30 seconds Turn off the power and turn it on A WARNING again To cool down the electricals the outdoor unit fan gets started when the radi
167. r unit PCB YES gt Replace the indoor unit PCB R7134 oa PIGAL CAULHANYS LEIDEN dLUIG UWICTITISLUL 9 Room temperature thermistor 115 Troubleshooting SiEN12 710A 4 6 Front Panel Open Close Fault Remote Control ti Display Method of Malfunction Detection Malfunction B The system will be shut down when the error occurs twice Decision Conditions Supposed E Malfunction of the reduction motor Causes m Malfunction or deterioration of the front panel mechanism Malfunction of the limit switch Troubleshooting AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Restart and check the movement H Does H move Y Remove the front panel and check the movement YES i 2 POESI MOVE Replace the reduction motor Does it open close fully gt Replace the assembly of the front panel mechanism Check the movement of the right and left separately by hand Restart Does the error code reappear NO It is supposed such as deformation of the panel or stuffed dust Find out the cause gt Replace the limit switch R7135 H Note You cannot operate the unit by the remote control when the front panel mechanism breaks down lt To the dealers temporary measure before repair gt 1 Pull the plug out or turn the breaker off 2 Remove the decor
168. r unit after the repair Faulty drainage may cause the water to enter the room and wet the furniture Do not tilt the unit when removing it The water inside the unit may spill and wet the furniture and floor OS wet the furniture and floor Be sure to install the packing and seal on the installation frame properly For unitary type If the packing and seal are not installed properly water may enter the room and only 1 2 Used Icons Icons are used to attract the attention of the reader to specific information The meaning of each icon is described in the table below H Note 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 A caution is used when there is danger that the reader through incorrect manipulation may damage equipment loose data get an unexpected result or has to restart part of a procedure A warning is used when there is danger of personal injury Caution AN Caution Warning AE 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 Introduction SIEN12 710A SIEN12 710A Part 1 List of Functions 1 Cooling Online eea eaten 2 Ze MBA LRD A A A is 4 List of Functions 1
169. r unit fan system check with DC motor 151 outdoor unit heat exchanger thermistor 132 outdoor unit PCB abnormality 143 OUTDOOR UNIT QUIET operation 78 output over current detection nnn 137 Leet 56 ele WT 56 over voltage detection neen 141 P PA ET 131 PICOTTO it en Seege See ies 44 piping diagrams nanne eneen 184 Index SiEN12 710A position sensor abnormality 128 power failure recovery function 16 18 181 power supply waveforms check ooocooccccccciccinnninn 151 power transistor nnn nnnnnnenn nennen ennen ennennen 182 power transistor check nnee eneen 153 power airflow dual flaps 26 POWERFUL operation 17 POWERFUL operation mode nnn nnen 58 preheating operation 46 preparation before operation nnn nnen 70 pressure equalization control nnn 54 preventing indoor freezing nnee 57 printed circuit board PCB control PCB 40 class ee 21 control PCB 50 class ee 21 control PCB indoor unit eee 17 19 control PCB outdoor unit eee 143 display POB eenen 17 19 INTELLIGENT EYE sensor PCB 17 signal receiver PCB nennen eneen 17 printed circuit board connector wiring diagram 16 problem symptoms and Measures 104 programme dry function nnee enen 28 R radiation fin temperature rise nennen 135 radiation fin thermistor
170. ration Is there a set temperature and air flow rate which is most comfortable a set temperature and air flow rate which you use the most HOME LEAVE operation is a function that allows you to record your favorite set temperature and air flow rate You can start your favorite operation mode simply by pressing the HOME LEAVE button on the remote control This function is convenient in the following situations Useful in these cases 1 Use as an energy saving mode Set the temperature 2 3 C higher cooling or lower heating than normal Setting the fan strength to the lowest setting allows the unit to be used in energy saving mode Also convenient for use while you are out or sleeping Every day before you leave the house A gt a Ta 8 When you go out push the HOME LEAVE When you return you will be Push the HOME LEAVE Operation Operation button and the air conditioner welcomed by a comfortably air button again and the air conditioner will adjust capacity to reach the preset conditioned room will adjust capacity to the set temperature for HOME LEAVE Operation temperature for normal operation e Before bed A gt gt 2 Lt lala nr T Wu Li i d Set the unit to HOME LEAVE The unit will maintain the When you enter the living room in the Operation before leaving the living temperature in the room at a morning the temperature will be just room when
171. ration Before Operation 70 2 5 AUTO DRY COOL HEAT FAN Operation 73 2 6 Adjusting the Air Flow Direction nnen enennennee eener ennenn 75 2 7 POWERFUL Operation oenen enen ennen ennen vens ennn ennen 77 2 8 OUTDOOR UNIT QUIET Eerst ege Age 78 2 9 ECONO Operation ans sans aans ennn a a a E EEE 79 2 10 HOME LEAVE Operation BE 80 2 11 MOLD PROOF Operation E 82 2 12 INTELLIGENT EYE Operations caste a 83 2 13 TIMER Operation 85 2 14 Note for Multi System ciones 87 2 15 Gare and ISI EE 89 ul Or A POUDIESMOOU MG EE 96 Part 6 Service DiaQnOSiS cc eceeeeeeeeeeeeeee KEEREEREER ERR ER ona 101 Table of Contents N Caution for Diagnosis econo REENEN een 102 Problem Symptoms and Measures annen eenen 104 Service Check FUNCOM ease vereren eenden etudes denten eneen 105 del Eech MEIN OG Tait ereen annet eden 105 3 2 Check Method 2 cd A AA 106 Troubleshooting E 108 4 1 Error Codes and Description nnn cece nennen ennnennnnennennennneennen 108 4 2 Indoor Unit PCB Abnormality AAA 109 4 3 Freeze up Protection Control or High Pressure Control 110 4 4 Fan Motor or Related Abnormality nnee nennen 112 4 5 Thermistor or Related Abnormality Indoor Un 115 4 6 Front Panel Open Close Eau 116 4 7 Freeze up Protection Control 117 4 8 OL Activation Compressor Overload eneen eenn eneen 119 4 9 Compressor LOEK sense tervnendernnvend genentaart ies 120 dl DE
172. re lt the average gas pipe temperature close the electronic expansion valve in that room 2 11 5 SC Control Outline Heat Pump Only 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 When the actual SC is gt target SC open the electronic expansion valve of the room When the actual SC is lt target SC close the electronic expansion valve of the room Detail Start Functioning Conditions After finishing the open control 810 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 2 11 6 Starting Operation Changing Operating Room Control Control the electronic expansion valve opening when the system is starting or the operating room is changed and prevent the system to be super heated or moistened 2 11 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 any is disconnected open the electronic expansion valve according to the outdoor air temperature and the operating f
173. re is smaller than the condenser Conditions thermistor temperature In case of J8 or J9 the system will be shut down when the error is detected at all of operating units Supposed B Connector in poor contact Causes EB Thermistor defective B Outdoor unit PCB defective B Indoor unit PCB defective EB Condenser thermistor defective in the case of D error outdoor unit heat exchanger thermistor in the cooling mode or indoor unit heat exchanger thermistor in the heating mode Service Diagnosis 131 Troubleshooting SiEN12 710A Troubleshooting AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check No 06 Refer to P 149 Turn on the power again Error displayed again on NO gt Reconnect remote control ii YES YES Connector or thermistor disconnected gt Reconnect y NO Check No 06 Check the thermistor resistance value gt Replace defective one s of the following thermistors e Radiation fin thermistor O Discharge pipe thermistor e Outdoor unit heat exchanger thermistor O Liquid pipe thermistor O Gas pipe thermistor e Outdoor temperature thermistor Check No 06 Check the indoor unit heat exchanger thermistor resistance value in the heating mode Indoor unit heat exchanger thermistor functioning NO gt Replace the following thermistor e Indoor unit heat exchange
174. reaker cuts off the operation frequently b OFF and call the B A switch or a button often fails to work properly service shop E There is a burning smell B Water leaks from the indoor unit m After a power failure B Lightning The air conditioner automatically resumes If lightning may strike the neighbouring area operation in about 3 minutes You should just stop operation and turn the breaker OFF for wait for a while system protection Disposal requirements Your air conditioning product is marked with this symbol This means that electrical and electronic products shall not be mixed with unsorted household waste Do not try to dismantle the system yourself the dismantling of the air conditioning system treatment of the refrigerant of oil and of other parts must be done by a qualified installer in accordance with relevant local and national legislation Air conditioners must be treated at a specialized treatment facility for re use recycling and recovery By ensuring this product is disposed of correctly you will help to prevent potential negative consequences for the environment and human health Please contact the installer or local authority for more information Batteries must be removed from the remote control and disposed of separately in accordance with relevant local and national legislation We recommend periodical maintenance In certain operating conditions the inside of the air conditioner may
175. requency and operate for a specified time and then stop After 3 minutes of waiting restart the unit and check if any is disconnected If any is disconnected stop the system after operating for a specified time If the disconnection is detected 4 times in succession then the system will be down 54 Function and Control SiEN12 710A Control Specification Detail Detect Disconnection If a 780 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 only for heat pump model 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 decided the system will stop after operating for continuous 9 minutes Adjustment when the thermistor is disconnected When compressor stop repeats specified time the system should be down 2 11 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 t
176. rizing Filter PAM Control SIS DeodoreingFuncion Compressor Oval Scroll Compressor il Titanium Apatite Photocatalytic ol Swing Compressor O Air Purifying Filter Rotary Compressor Mold Proof Air Filter O Reluctance DC Motor O Wipe clean Flat Panel Comfortable Power Airflow Flap Washable Grille Airflow Power Airflow Dual Flaps Mold Proof Operation Power Airflow Diffuser Heating Dry Operation Wide Angle Louvers Good Sleep Cooling Operation Vertical Auto Swing Up and Down Timer 24 Hour On Off Timer O Horizontal Auto Swing Right and Left Night Set Mode O 3 D Airflow Worry Free Auto Restart after Power Failure O Reliability amp ar O Comfort Airflow Mode Durability Self Diagnosis Digital LED Display O 3 Step Airflow H P Only Wiring Error Check somiar Auto Fan Speed o Anticorrosion Treatment of Outdoor _lo Indoor Unit Quiet Operation Oni gt Heat Exchanger Night Quiet Mode Automatic Flexibility Multi Split Split Type Compatible _ Outdoor Unit Quiet Operation Manual O Indoor Unit INTELLIGENT EYE Flexible Voltage Correspondence O Quick Warming Function O High Ceiling Application Hot Start Function Chargeless 20m Automatic Defrosting O Either Side Drain Right or Left Operation Automatic Operation Powe
177. ront panel is securely fixed Operation Manual 89 Instruction SiEN12 710A FILTERS E Air Filter Take off the Titanium Apatite Photocatalytic Clean or replace each filter Set the air filter and Titanium Apatite Open the front panel Pull out the air filters e Push a little upwards the tab at the center of each air filter then pull it down Air Purifying Filter e Hold the recessed parts of the frame and unhook the four claws 1 Titanium Apatite Photocatalytic Air Purifying Filter Air filter e See figure Photocatalytic Air Purifying Filter as they were and close the front panel e Insert claws of the filters into slots of the front panel Close the front panel slowly and push the panel at the 3 points 1 on each side and 1 in the middle Wash the air filters with water or clean them with vacuum cleaner e If the dust does not come off easily wash them with neutral detergent thinned with lukewarm water then dry them up in the shade e It is recommended to clean the air filters Tab every two weeks B Titanium Apatite Photocatalytic Air Purifying Filter The Titanium Apatite Photocatalytic Air Purifying Filter can be renewed by washing it with water once every 6 months We recommend replacing it once every 3 years Maintenance 1 2 A Remove dust with a vacuum cleaner a
178. screws connecting wires on the terminal board 1 Loosen the 2 grounding g teat l DARI screws The terminal board is united Loosen the 2 screws to Room A LLG e Room B resin formation remove the wiring fixture Then loosen the all screws for the connectors to disconnect the power supply cable and the connecting wires I A 1 Wiring To EEE fixture OT Grounding F screws E ASK 7 a TA Power supply R7573 Remove the electrical box Detach the outdoor air thermistor from the holder Lift up the guard net to remove R7209 158 Removal Procedure SiEN12 710A Outdoor Unit motor S70 Detach the lead wire for the fan motor 5 Disconnect the connector for the gas pipe thermistor S91 and for the liquid pipe thermistor S92 6 Disconnect the connector for the overheating protector S40 Step Procedure Points 3 Disconnect the B For removal procedure of the connector for the fan 870 lead wire for the fan motor sl p 2A en wT IK N Sek Le d A R7578
179. se an electrical shock excessive heat generation or fire Be 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 If the 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 R410A R22 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
180. sor PCB PCB 2 Signal Receiver PCB 1 S29 Connector for control PCB PCB 3 Display PCB 1 S27 Connector for control PCB PCB 4 INTELLIGENT EYE sensor PCB 1 S36 Connector for control PCB il 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 181 for detail 3 LED A LED for service monitor green 4 FU1 Fuse 3 15A PCB 3 Display PCB 1 SW1 S1W Forced operation ON OFF switch 2 LED1 LED for operation green 3 LED2 LED for timer yellow 4 LED3 LED for INTELLIGENT EYE green 5 RTH1 R1T Room temperature thermistor 16 Printed Circuit Board Connector Wiring Diagram SiEN12 710A Printed Circuit Board Connector Wiring Diagram PCB Detail PCB 1 Control PCB indoor unit ta ech LEDA 5V PCB 2 Signal Receiver PCB R5234 PCB 4 INTELLIGENT EYE sensor PCB S36 R4291 Printed Circuit Board Connector Wiring Diagram R6039 PCB 3 Display PCB ke lom df E swt 52 1 RTH az iai 1 ae LED LEQ3 L no DISPLAY 7 os SE H POF LED2 IN LEDS R4290 17 Printed Circuit Board Connector Wiring Diagram SiEN12 710A 1 2 Duct Connected Type Connectors H Note PCB 1 Control PCB 1 S1 Connector for AC fan motor Conn
181. sor abnormality 130 HO Outdoor air thermistor or related abnormality 131 JZ Discharge pipe temperature thermistor or related abnormality 131 J6 Heat exchanger temperature thermistor or related abnormality 131 Ja Liquid pipe temperature thermistor or related abnormality 131 J5 Gas pipe temperature thermistor or related abnormality 131 13 Electrical box temperature rise 133 L4 Radiation fin temperature rise 135 L5 Output over current detection 137 PH Radiation fin thermistor or related abnormality 131 X Displayed only when system down occurs 108 Service Diagnosis SiEN12 710A Troubleshooting 4 2 Indoor Unit PCB Abnormality Remote Control Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Troubleshooting H Note Service Diagnosis Al Evaluation of zero cross detection of power supply by indoor unit When there is no zero cross detection in approximately 10 continuous seconds B Faulty indoor unit PCB B Faulty connector connection AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Connector connection check note Y NO 8 Is it normal gt Correct connections YES Replace PCBs R7130 Connector Nos vary depending on models Model Type Connector No Wall Mounted Type Terminal strip Control PCB Duct Connected Type Terminal strip Control P
182. stat OFF 22 C Switch to Heating Operation Heating Operation 26 5 C Thermostat OFF 27 5 C Switch to Cooling Operation 29 Main Functions SIEN12 710A 1 6 Thermostat Control Thermostat control is based on the difference between the room temperature and the setpoint Thermostat OFF Condition The temperature difference is in the zone A Thermostat ON Condition 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 Wall Mounted Type ON Room temperature setpoint Cooling 0 5 C c Dry 0 5 C B Cooling 2 0 C A Dry 2 5 2 0 C OFF R4668 Duct Connected Type ON Room temperature setpoint Cooling 1 0 C c Dry 1 0 C 1 5 C B Cooling 2 0 C A Dry 2 5 2 0 C OFF R6032 Heating Wall Mounted Type Room temperature setpoint OFF 1 5 C 0 C ON R4669 Duct Connected Type OFF Room temperature setpoint A 1 5 C B 1 0 C CG 0 5 C ON R6033 30 Function and Control SIEN12 710A Main Functions 1 7 Night Set Mode When the OFF timer is set the Night Set circuit automatically activates The Night Set circuit maintains the
183. t Replace the fin thermistor Above 90 C Check the power transistor and fin for looseness If they are found to be fit tightly replace the PCB or the power transistor Check No 09 Check the outdoor unit fan or related Malfunctioning Replace the fan motor Correct the connectors and Met fan motor leads Functioning Replace the outdoor unit PCB Radiation fin dirty gt Clean up the radiation fin Slightly dirty Check No 07 Check the installation condition R7147 H Note Refer to 1 3 Application of Silicon grease to a power transistor and a diode bridge on P 182 136 Service Diagnosis SIEN12 710A Troubleshooting 4 20 Output Over Current Detection L5 Remote Control Display Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes Service Diagnosis An output over current 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 An output over current input is fed from the output over current detection circuit to the microcomputer The system will be shut down if the error occurs 8 times Clearing condition Continuous run for about 11 minutes normal Over current due to defective power transistor Over current due to wrong internal wiring Over current due to abnormal s
184. t 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 sub cooling control The actual sub cooling is calculated from the liquid pipe temperature and the heat exchanger temperature The system controls the electronic expansion valve opening to reach the target sub cooling When only one indoor unit is heating the indoor liquid pipe thermistor is used for a sub cooling control The system calculates the actual sub cooling 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 sub cooling When all indoor units are heating the liquid pipe thermistor is used for liquid pipes isothermal control The system controls electronic expansion valves to make liquid pipe temperatures the average of present temperature of each room Function and Control SiEN12 710A Main Functions 1 13 2 Cooling Only Model A Outdoor Heat Exchanger Thermistor B Discharge Pipe Thermistor C Gas Pipe Thermistor D Indoor Heat Exchanger Thermistor Function and Control Expansion valve Compressor C R4688 The outdoor heat exchanger thermistor is used for controlling target discharge temperature The system sets a target discharge temperature according to the outdoor and indoor heat exchanger te
185. t of fan motor connector Is rotation number command NO gt Replace fan motor Note Motor may break when the motor connector is disconnected while remaining power supply pulse generated Replace fan motor and indoor PCB NO Replace indoor unit PCB pulse generated Replace fan motor Replace indoor unit PCB R7133 Service Diagnosis SiEN12 710A Troubleshooting 4 5 Thermistor or Related Abnormality Indoor Unit Remote Control Display Method of Malfunction Detection Malfunction Decision Conditions H Note Supposed Causes Troubleshooting Check No 06 Refer to P 149 Service Diagnosis EES 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 ohms or below about 50 C more than 1 860 kohms The values vary slightly in some models B Faulty connector connection B Faulty thermistor B Faulty PCB AN Be sure to turn off power switch before connect or disconnect connector Caution or parts damage may be occurred Check the connector connection NO Correct the connection YES Check No 06 Check the thermistor resistance value NO gt Replace the thermistor Replace the indoo
186. the operation mode of the Priority Room takes precedence the user can select a different operation mode from other rooms lt Example gt Room A is the Priority Room in the examples When COOL mode is selected in Room A while operating the following modes in Room B C and D Operation mode in Room B C Status of Room B C and D when the unit in Room A and D is in COOL mode COOL or DRY or FAN Current operation mode maintained HEAT The unit enters Standby Mode Operation resumes when the Room A unit stops operating AUTO If the unit is set to COOL mode operation continues If set to HEAT mode it enters Standby Mode Operation resumes when the Room A unit stops operating 2 Priority when POWERFUL operation is used lt Example gt Room A is the Priority Room in the examples The indoor units in Rooms A B C and D are all operating If the unit in Room A enters POWERFUL operation operation capacity will be concentrated in Room A In such a case the cooling heating efficiency of the units in Rooms B C and D may be slightly reduced 3 Priority when using OUTDOOR UNIT QUIET operation lt Example gt Room A is the Priority Room in the examples Just by setting the unit in Room A to QUIET operation the air conditioner starts OUTDOOR UNIT QUIET operation You don t have to set all the operated indoor units to QUIET operation 88 Operation Manual SIEN12 710A Instruction 2 15 Care and cleaning FTKS 25 35
187. thin object to push Operation Manual SiEN12 710A Instruction FDK X S 25 35 C FDKS 25 35 E CDXS 25 35 E B Indoor unit ch OD Operation Manual 67 Instruction SiEN12 710A B Outdoor Unit 68 E Indoor Unit 1 Air outlet 10 Indoor Unit ON OFF switch 2 Air outlet grille Field supply e Push this switch once to start operation e Appearance of the Air outlet grille and Air Push once again to stop it inlet grille may differ with some models e This switch is useful when the remote 3 Display Control panel control is missing 4 Suction grille Option The operation mode refers to the following e Appearance of the suction grille and Air table inlet grille may differ with some models 5 Air inlet Mode Mate SE 6 Room temperature sensor FDKS COOL 22 C AUTO e It senses the air temperature around the c F pxs AUTO 25C AUTO unit 7 Operation lamp green 8 TIMER lamp yellow 9 HOME LEAVE lamp red e Lights up when you use HOME LEAVE operation B Outdoor Unit 11 Air inlet Back and side 14 Earth terminal 12 Refrigerant piping and inter unit cable e Itis inside of this cover 13 Drain hose 15 Air outlet Appearance of the outdoor unit may differ from some models Operation Manual SiEN12 710A Instruction B Remote control Operation Manual 1 2 HOME LEAVE 5 ER POWERFUL TE
188. this or any other error does not occur during the following 60 minute compressor running time total time Fin temperature rise due to defective outdoor unit fan Fin temperature rise due to short circuit Fin thermistor defective Connector in poor contact Outdoor unit PCB defective Silicon grease is not applied properly on the heat radiation fin after replacing outdoor unit PCB 135 Troubleshooting SiEN12 710A Troubleshooting Be sure to turn off power switch before A WARNING A Caution connect or disconnect connector or _ A Check No 06 parts damage may be occurred To cool down the electricals the A outdoor unit fan gets started when Refer to P 149 Precaution before turning on the power again the radiation fin temperature rises Make sure the power has been off above 75 C even when the air Q for at least 30 seconds conditioning is not operated and m Hth d turnit stops itself when it drops below urn off the power and turn it on 70 C Check No 07 again to get the system started Refer to P 150 Check No 09 Refer to P 151 MES YES Error displayed again Has PCB been replaced Check if the silicon grease applied properly on the radiation fin If not apply it NO NO Note 1 Check No 06 Silicon grease Check the thermistor resistance Part No 1172698 value Fin thermistor Y Check the radiation fin temperature Y specified in its characteristic char
189. 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 2 Cut pipes on the main unit by a miniature copper tube cutter in order to make it easy to disconnect BB note Do not use a metal saw for cutting pipes by all means because the sawdust come into the circuit E The brazed parts are heated after being disconnected To avoid a burn make sure that the compressor is cooled down before removing Removal Procedure SIEN12 710A Part 8 Others he gh A eN ed a eee 180 1 1 Test Run from the Remote Control 180 1 2 Jumper dl EE 181 1 3 Application of Silicon Grease to a Power Transistor and a Diode Braden errata steaten deet Ee 182 Others 179 Others SiEN12 710A 1 Others 1 1 Test Run from the Remote Control For Heat pump In cooling mode select the lowest programmable temperature in heating mode select the highest programmable temperature E Trial operation may be disabled in either mode depending on the room temperature H 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 B For protection the system disables restart operation for 3 minutes after it is turned off For Cooling Only Select the lowest programmable temperature B Trial operation in cooling mode may be disabled depending
190. ting frequency and outdoor unit airflow rate are increased 2 14 2 Voltage Detection Function Power supply voltage is detected each time equipment operation starts 58 Function and Control SIEN12 710A Operation Manual Part 5 Operation Manual 1 System Configuration nasanananennaneneansennsennenvenenenenenennsen ennn 60 1 1 Operation Instructions enen ennen venen vennen nennen ennn ennen 60 E e ele DEE 61 2 1 Manual Contents and Reference Page nennen eneen 61 2 2 Safety Precautions nn rarrinurtarn iere dee canes seecevancetedenaeee ek EEn 62 2 3 Na mes of Part TT 64 2 4 Preparation Before Operation 70 2 5 AUTO DRY COOL HEAT FAN Operation 73 2 6 Adjusting the Air Flow Direction nnen venennennene eeen enneen 75 2 7 POWERFUL Operation oenen enen eneen ennen nennen ennen 77 2 8 OUTDOOR UNIT QUIET Operation scr 78 2 9 ECONO Operation nan oen ones ones cnn nn 79 210 HOME LEAVE Operation EE 80 2 11 MOLD PROOF Operation WEE 82 2 12 INTELLIGENT EYE Operar ante annen osha 83 2 13 TIMER Operation 85 2 14 Note for Multi System ege k nde iets REESEN Eed den 87 2 15 Care and GIGSRING E 89 2 16 TTOUDIESNOOUIAGS EE 96 59 System Configuration SiEN12 710A 1 System Configuration 1 1 Operation Instructions After the installation and test operation of the room air conditioner have been completed it should be operated and handled as described belo
191. to 10 cycles can stop air Stops conditioner operation Operation lamp OFF Check the outdoor air temperature Heating operation cannot be used when the outdoor air temperature is 15 5 C or higher only for heat pump model and cooling operation cannot be used when the outdoor air temperature is below 10 C Diagnosis with remote control 108 indication Equipment operates but Check for wiring and piping errors Conduct the wiring piping error check described does not cool or does not in the indoor and outdoor units on the product diagnosis nameplate heat only for heat pump connection wires and pipes model Check for thermistor detection Check to make sure that the main unit s errors thermistor has not dismounted from the pipe holder Check for faulty operation of the Set the units to cooling operation and compare electronic expansion valve the temperatures of the liquid side connection pipes of the connection section among rooms to check the opening and closing operation of the electronic expansion valves of the individual units Diagnosis with remote control 108 indication Diagnosis by service port pressure Check for insufficient gas 152 and operating current Large Operating Noise and Check the output voltage of the 153 Check the power transistor Check the installation condition Check to make sure that the required spaces for installation specified in the Engineering Data
192. to locate the leaking point and repair it before charging the refrigerant After charging refrigerant 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 IJSS Se vii Introduction SIEN12 710A IN Warning 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 only If the unit is not s
193. to protect the air conditioner You should wait for about 3 minutes Hot air does not flow out soon after the start of heating operation The air conditioner is warming up You should wait for 1 to 4 minutes The system is designed to start discharging air only after it has reached a certain temperature The heating operation stops suddenly and a flowing sound is heard The system is taking away the frost on the outdoor unit You should wait for about 3 to 8 minutes The outdoor unit emits water or steam In HEAT mode The frost on the outdoor unit melts into water or steam when the air conditioner is in defrost operation In COOL or DRY mode Moisture in the air condenses into water on the cool surface of outdoor unit piping and drips Mists come out of the indoor unit This happens when the air in the room is cooled into mist by the cold air flow during cooling operation The indoor unit gives out odour The outdoor fan rotates while the air conditioner is not in operation This happens when smells of the room furniture or cigarettes are absorbed into the unit and discharged with the air flow If this happens we recommend you to have the indoor unit washed by a technician Consult the service shop where you bought the air conditioner After operation is stopped The outdoor fan continues rotating for another 60 seconds for system protection While the air conditioner is not in operation When
194. to record your preferred temperature and air flow rate settings B To start HOME LEAVE operation 1 Press HOME LEAVE button e is displayed on the LCD e The HOME LEAVE lamp lights up B To cancel HOME LEAVE operation 2 Press HOME LEAVE button again e A disappears from the LCD e The HOME LEAVE lamp goes off Before using HOME LEAVE operation H To set the temperature and air flow rate for HOME LEAVE operation When using HOME LEAVE operation for the first time please set the temperature and air flow rate for HOME LEAVE operation Record your preferred temperature and air flow rate HOME LEAVE QUIET Ev TIMER oes POWERFUL TEMP y A AS CANCEL RESET Initial setting Selectable range temperature Air flow rate temperature Air flow rate Cooling 25 C al 18 32 C 5 step Al and Heating 25 C il 10 30 C 5step A and 24 1 Press HOME LEAVE button Make sure is displayed in the remote control display 2 Adjust the set temperature with A or w as you like 3 Adjust the air flow rate with FAN setting button as you like Home leave operation will run with these settings the next time you use the unit To change the recorded information repeat steps 1 3 80 Operation Manual 1 2 SIEN12 710A Instruction B What s the HOME LEAVE ope
195. ts DCH Multi meter DC voltage O _ range S20 S90 S70 S80 i Thermistor Fan motor Four way valve Ge lead wire leadwire lead wire ei GC R6027 152 Service Diagnosis SiEN12 710A Check 5 1 12 Power Transistor Check Check No 13 Checking the power transistor Never touch any live parts for at least 10 minutes after turning off the circuit breaker e f unavoidably necessary to touch a live part make sure the power transistor s supply voltage is below 50 V using the tester e For the UVW make measurements at the Faston terminal on the PCB or the relay connector Tester s negative terminal ha aes UVW PEN UVW Tester s positive terminal UVW ee as UVW power transistor Normal resistance Abnormal resistance Several kohms to several Mohms 0 or oo 5 1 13 Main Circuit Electrolytic Capacitor Check Check No 14 EB Checking the main circuit electrolytic capacitor Never touch any live parts for at least 10 minutes after turning off the circuit breaker e f unavoidably necessary to touch a live part make sure there is no DC voltage using the tester e Check the continuity with the tester Reverse the pins and make sure there is continuity Keep the tester in the I resistance measuring range A yi a A F Fi Pa Fi y L gei _ Le d e E ES D QO KE di Set e J J When the pointe
196. ture is higher than 12 C or discharge pipe temperature is higher than 12 C inverter in open phase operation stops 2 3 2 Four Way Valve Switching Outline Heat Pump Only 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 sec after unit operation is stopped 2 3 3 Four Way Valve Operation Compensation Outline Heat Pump Only 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 the operating frequency which is more than a certain fixed frequency for a certain fixed time Detail Staring Conditions 1 When starting compressor for heating 2 When the operating mode changes from the previous time 3 When starting compressor for starting defrosting or resetting 4 When starting compressor for the first time after the reset with the power is ON 5 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 conditions with 1 through 5 above 40 class 50 class Cooling 56 H
197. upply voltage Over current due to defective PCB Error detection due to defective PCB Over current due to closed stop valve Over current due to compressor failure Over current due to poor installation condition 137 Troubleshooting SiEN12 710A Troubleshooting Check No 07 Refer to P 150 Check No 08 Refer to P 151 Check No 13 Refer to P 153 H Note Ifthe model does not have SPM replace the outdoor unit PCB 138 AN Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred An input over current may result from wrong internal wiring If the wires have been disconnected and reconnected for part replacement for example and the system is interrupted by an input over current check the wires again Stop valve fully open Turn off the power and turn it on again to get the system started See if the same error occurs l Error again YES Turn off the power and disconnect the harnesses U V and W Y Monitor the supply voltage discharge and suction pressures and other factors for a long term Possible causes e Instantaneous supply voltage drop e Compressor motor overloaded e Contact induced electrical short circuit Check with the inverter checker NO YES gt Fully open the stop valve gt Keep on using as it is monitor gt Check the electricals co
198. verter Power Control O O Clean Air Purifying Filter Photocatalytic Deodorizing Filter Operation Limit for Cooling CDB O eg Air Purifying Filter with Photocatalytic ___ Deodorizing Function Operation Limit for Heating CWB zet Mee Titanium Apatite Photocatalytic o PAM Control Air Purifying Filter Compressor Oval Scroll Compressor Mold Proof Air Filter O O Swing Compressor Wipe clean Flat Panel O Rotary Compressor Washable Grille Reluctance DC Motor Mold Proof Operation O Comfortable Power Airflow Flap Heating Dry Operation Oe Power Airflow Dual Flaps O Good Sleep Cooling Operation Power Airflow Diffuser Timer 24 Hour On Off Timer O O Wide Angle Louvers O Night Set Mode O O Vertical Auto Swing Up and Down O Worry Free Auto Restart after Power Failure O O Horizontal Auto Swing Right and Left Durability amp Self Diagnosis Digital LED Display O O 3 D Airflow Wiring Error Check Comfort Airflow Mode ae re Anticorrosion Treatment of Outdoor EN WS 3 Step Airflow H P Only a eae Heat Exchanger Comfort Auto Fan Speed O O Flexibility Multi Split Split Type Compatible Control Indoor Unit S S Indoor Unit Quiet Operation O O Night Quiet Mode Automatic Flexible Voltage Correspondence O O Outdoor Unit Quiet Operation Manual High Ceiling Application INTELLIGENT
199. w 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 60 Operation Manual SIEN12 710A Instruction 2 Instruction 2 1 Manual Contents and Reference Page Wall Mounted Type de FTKS25 35D FTXS25 35E Read Before Operation Safety Precautions 62 62 Names of Parts 64 64 Preparation Before Operation 70 70 Operation AUTO DRY COOL HEAT FAN 73 73 Operation Adjusting the Air Flow Direction 75 75 POWERFUL Operation 77 77 OUTDOOR UNIT QUIET Operation 78 78 ECONO Operation 79 79 HOME LEAVE Operation MOLD PROOF Operation 82 82 INTELLIGENT EYE Operation 83 83 TIMER Operation 85 85 Note for Multi System 87
200. wiv U S80l oo gt gt gt gt E Wzo ESO5z0 23 E9z gt o A266 Hass seh Ss 22 desde S582 E az zici o le o le ol fiol Im N 7 LA 2330 RET ABT EI D I RTT RAT RaT A FIT ROOM A ROOMA Op Y2 OUTDOOR DISCHARGE MF U rek don ROOM B ROOM B ROOM A ROOM B CONDENSER ot ET LIQUID PIPE GAS PIPE 3 8 A A te D gt a FIELD WIRING wis u l M1C l 074 075 094 MIF FAN MOTOR V1 V3 V4 VARISTOR onnie C95 CAPACITOR MRCW MRM10 X1M X2M TERMINAL STRIP DB1 DB2 DIODE BRIDGE MRM20 MAGNETIC RELAY Y1E Y2E ELECTRONIC EXPANSION VALVE COIL BLK BLACK FU1 FU2 FU3 FUSE N NEUTRAL Y1E Y2E REVERSING SOLENOID VALVE COIL BLU BLUE IPM1 INTELLIGENT POWER MODULE PCB1 PRINTED CIRCUIT BOARD Z1C Z2C Z3C BRN BROWN L LIVE QiL OVERLOAD PROTECTOR z4C FERRITE CORE GRY GREY Li COIL R1T R8T THERMISTOR PROTECTIVE EARTH ORG ORANGE LIR REACTOR SA1 SURGE ARRESTER S20 S21 S40 RED RED MiC COMPRESSOR MOTOR TFU THERMAL FUSE S70 S80 S45 WHT WHITE 90 91 S92 YLW YELLOW X11A CONNECTOR 3D057045B Appendix 187 Wiring Diagrams SiEN12 710A 188 Appendix SIEN12 710A Numerics 3 minute standby nnen ennen nennen 46 A Al sanne anderen 109 DN OO 110 117 AO NET 112 113 address setting jumper nnen 16 18 air flow direction 75 anti icing function in other rooms 142 ARGC433 SOMES escarola Meese 105 AUTO DRY COOL HEAT FAN operation
201. y again Does LED A flashing more than 10 NO gt Investigate the cause of disturbance and take remedial action times Check relay wire between indoor unit and outdoor unit NO Check wrong wiring insulation among wiring insulation to ground gt Replace outdoor unit PCB YES gt Reconnect relay wire Service Diagnosis gt Replace indoor unit PCB R7153 145 Check SiEN12 710A 5 Check 5 1 How to Check 5 1 1 Fan Motor Connector Output Check Check No 01 1 Check connector connection 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 To 0 Motor power supply voltage 6 oO Unused 5 0 Unused 4 O POV reference potential 3 O gt Motor control voltage 15 VDC 2 O gt Rotation command voltage 1 6 VDC 1 O Rotation pulse input R3199 5 1 2 Limit Switch Continuity check Check No 03 Remove the front grille The limit switch is located at the left side of the drain pan assembly Check the continuity of the switch connection x Suter saus Continuity Continuity No continuity Limit switch Forward Q0363 The shutter can be opened and closed with hand Keep the shutter open and closed all the way for each continuity check steps 5 1 3 Electronic Expansion Valve Check Check
202. z 40Hz A Heating 68Hz 54Hz 2 3 4 3 Minute Standby Prohibit to turn ON the compressor for 3 minutes after turning it off Except when defrosting Only for Heat Pump Model 46 Function and Control SiEN12 710A Control Specification 2 3 5 Compressor Protection Function When turning the compressor from OFF to ON the upper limit of frequency must be set as follows The function must not be used when defrosting only for heat pump model Function and Control 40 class 50 class FCG 3 90 85 FCG 2 72 70 FCG 1 62 55 TCG 1 140 150 TCG 2 180 180 TCG 3 300 300 Frequency Time a a TCG2sec oe an a en R2949 47 Control Specification SiEN12 710A 2 4 Discharge Pipe Temperature Control Outline The discharge pipe temperature is used as the compressor s internal temperature If the discharge pipe temperature rises above a certain level the operating frequency upper limit is set to keep this temperature from going up further Detail Divide the Zone A Stop zone B C Drooping zone Al 110 B 103 C 102 Reset zone D 101 Return zone R2836 Management within the Zones Zone Control contents Stop zone When the temperature reaches the stop zone stop the compressor and correct abnormality Drooping zone Start the timer and the frequency will be drooping Keep zone Keep the upper limit of freque

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