Service Manual
Contents
1. EH heat exchanger A1 gt filter AY outdoor heat exchanger 4 IB heat exchanger B qo filter Bz high pressure svvitch Note Not available for 14K 18K 1 discharge silencer C heat exchanger Ci ES d discharge temperature filter 2 sensor lt 8 D3 D1 me 8 filler poli gas liquid separator ON 1 d Note Not available for 14K 18K model A1 A unit electronic expansion valve B1 B unit electronic expansion valve C1 C unit electronic expansion valve D1 D unit electronic expansion valve A2 A unit gas pipe temperature sensor B2 B unit gas pipe temperature sensor C2 C unit gas pipe temperature sensor D2 D unit gas pipe temperature sensor A3 A unit liquid pipe temperature sensor B3 B unit liquid pipe temperature sensor C3 C unit liquid pipe temperature sensor D3 D unit liquid pipe temperature sensor Schematic Diagram 5 Schematic Diagram 5 1 Electrical Data Meaning of marks Symbol2. Schematic Diagram e TOP VIEW 5 6 R374 R373 R372 R38 R37 RIN 5 E L L M 1 Ec i 3753773740371 37 0371 Fanuninisin T T P R42 C38R92R541 na rin azsi 012 02 N N LACE LIL HHH 3720372 go o 7 CERE Tighe mH arl m ul R43C19R94R91 RI2 R90 des v2 LLI 3 Es ES us R ei M sa Em i He a iH 09 8 2 d S 2604 2883 R30 JUMP 081 giri 082 gt 7 028 Ak gr cH E Hain RNTCI LUU HL E i tac 19 REMI j c kisi kii 6216 Im b ES gri rrrrrr f r CREE T uz 1 br R ssni u A rr EE m X 59 BAH E 7 M 1 DOWN SWNG uP 0825 o 3 Nec BA s R Z38 21 Vi onasan 200 0 2 0 23 Tow on Bz 13 2 1 109 8 1 Terminal f rihi 6 Communication terminal for indoor 11 erminal for earthing wire 9 and outdoor units 9 2 Terminal for live wire T Terminal for display panel 12 Terminal for lower swing 3 Protective tube 8 Terminal for jumper cap 13 Terminal for DC fan 4 Terminal for neutral wire 9 I
3. Summary and features Indoor Unit MUL 09CON MUL 12CON MUL 18CON Remote control YAA1FB1 Summary and features SS S A m SSS 1 Safety Precautions Installing starting up and servicing air conditioner can be hazardous due to system pressure electrical components and equipment location etc Only trained qualified installers and service personnel are allowed to install start up and service this equipment Untrained personnel can perform basic maintenance fun ctions such as cleaning coils All other operations should be performed by trained service personnel When handling the equipment observe precautions in the manual and on tags stickers and labels attached to the equipment Follow all safety codes Wear safety glasses andwork gloves Keep quenching cloth and fire extinguisher nearby when brazing Read the instructions thoroughly and follow all warnings or cautions in literature and attached to the unit Consult local building codes and current editions of national as well as local electrical codes Recognize the following safety information Incorrect handling could result in personal injury or death Incorrect handling may result in minor injury or damage to product or property N Warning All electric work must be p
4. TOYOTOMI b Service Manual Model MUL 09 CON MUL 12 CON MUL 18 CON Table of Contents Summary and features 1 11 sse 1 Part 1 Safety Precautions seen 2 Part 2 Specifications assesses nat a nl ab nida 3 2 1 Unit Specifications I ba aaa za layan hilal eyi ce san r le 3 2 2 Noise criteria curve tables Tor both MODS S ccs cei a ne ma 4 Part 3 Construction Views 5 Part 4 Refrigerant System 6 Part 5 Schematic 7 5 ELS E 7 5 2 Electiical Wy MING aaa am Aaaa 7 5 3 Printed Circuit PRG C 8 Part 6 FunctionandControl 9 Remote Control Operaflons eee eor ete per erue 9 6 2 Description of Each Control 13 Part 7 Installation 45 1 1 Choosing an Installation 15 7 2 Indoor Unit Installation DraWinNgS 15 7 3 Installation gor pP 17 74 Indoor unit 45 Part 8 ExplodedViewsandPartslList 29 Part 9 sss 9 1 Precautions Before Performing Inspection or 9 2 How to Check Simply the Main
5. Bending radius should be 30 to 40mm or larger lt 2 with tape to keep dirt or water out 6 2 Selection of copper and heat insulation materials Inter unit wiring When using commercial copper pipes and fittings observe the Gas pipe following 1 Insulation material Polyethylene foam Heat transfer rate 0 041 to 0 052W mK 0 035 to 0 045kca mh C Refrigerant gas pipe s surface temperature reaches 110 C max 4 Liquid pipe insulation Finising tape Choose heat insulation materials that will withstand this temperature 55 2 Be sure to insulate both the gas and liquid piping and to provide insulation dimensions as belovv Gas side Liquid side Gas pipe thermal insulation Liquid pipe thermal insulation O D 9 55mm O D 12 7mm O D 6 4mm 1 0 12 15mm 1 14 16mm 1 0 8 10 Thickness 0 8mm Thickness 10mm Min 3 Use separate thermal insulation pipes for gas and liquid refrigerant pipes 22 Installation Manual 7 Checking for gas leakage 1 Check for leakage of gas after air purging 2 See the sections on air purges and gas leak checks in the installation manual for the outdoor unit Check for leakage here Apply soapy water and ch eck carefully for leaking gas wipe soapy water off after the check is complete 8 Attaching the connection pipe Attach the pipe after checking for gas leakage described above 1 Cut the insulated portio
6. and F 19 Combination TEMP CLOCK buttons About Energy saving Function Press TEMP and CLOCK simultaneously in COOL mode to start energy saving function Nixie tube on the remote controller displays SE Repeat the operation to quit the function Combination of TEMP and CLOCK buttons About 8C Heating Function Press TEMP and CLOCK simultaneously in HEAT mode to start 8 C Heating Function Nixie tube on the remote controller displays and a selected temperature 8 46 F if Fahrenheit is adopted Repeat the operation to quit the function About Back lighting Function The unit lights for 4s when energizing for the first time and 3s for later press Replacement of Batteries 1 Remove the battery cover plate from the rear of the remote controller As shown in the figure 2 Take out the old batteries 3 Insert two new AAA1 5V dry batteries and pay attention to the polarity 4 Reinstall the battery cover plate Notes e When replacing the batteries do not use old or different types of batteries otherwise it may cause malfunction e fthe remote controller will not be used for a long time please remove batteries to prevent batteries from leaking The operation should be performed in its receiving range It should be kept 1m away from the TV set or stereo sound sets Sketch map for Ifthe remote controller does not operate normally please take th
7. Exploded Views and Parts list 8 Exploded Views and Parts List Models MUL 09CON MUL 12CON a Al ANINI 25 26 Exploded Views and Parts list ae Part Code Description NO MUL 09CON MUL 12CON Qty 1 Front Panel Assy B oz 3 2 esee O ma T 3 ren Gase assy 2 T onu T 4 0 T 5 emeSewoseemg oma 3 6 Rear Case assy _ m T tos 1001006 5 T emim on T 9 step motor O os v s 3 Swing Assy J on gt emma sms T 15 3 4 ps Bad sen T ssr 3 je T s s T 16 T 49s sous T 1 sienal wire 4003004202 3 meo soo 3 19 sin cari sosu 70 jemex T zz T m T m ece Box Asp mon zo r zm artoserun osas Tom 3 sim 10e 2 24 shat of guide tower 10920 1990 S 2 25 eter Tray Assy T 25 Airtowver ower este 2 zr s teme sep mate wosa step Mer ____ ziz T __ _ 00 Tube Sensor s0005
8. Tub Operation Cooling Heating ube indicator indicator indicator Malfunction of jumper cap C5 blink 15 times No feedback from indoor unit s motor H6 blink 11 times Circuit malfunction of zero crossing detection U8 blink 17 times Indoor ambient temperature sensor is open short circuited F1 blink once Indoor evaporator temperature sensor is open short circuited F2 blink twice blink Liquid valve temperature sensor is open short circuited b5 19 times blink Gas valve temperature sensor is open short circuited b7 22 times blink module temperature sensor is open short circuited P7 18 times blink Outdoor ambient temperature sensor is open short circuited F3 3 times blink Outdoor condenser tube temperature sensor is open short circuited F4 x imes blink Outdoor discharge temperature sensor is open short circuited F5 5 times Communication malfunction between indoor and outdoor units E6 blink 6 times blink Malfunction of phase current circuit detection for compressor U1 12 times Troubleshooting Module temperature protection P8 pik blink Charging malfunction of capacitor PU 17 times High pressure protection of system E1 blink once Overload protection of compressor H3 blink 3 times Wrong connection for communication wire or malfunction of d j j j n expansion valve free match Wrong connection for communication wire or malfunction
9. mode If H1 isn t displayed on remote controller under OFF status the unit will turn to defrosting mode 1 after the unit is turn on by remote controller After indoor unit receives remote control signal it will send defrosting mode 1 to outdoor unit If H2 is displayed on remote controller under OFF status the unit will turn to defrosting mode 2 after the unit is turn on by remote controller After indoor unit receives remote control signal it will send defrosting mode 2 to outdoor unit Under OFF status press MODE and AUXILIARY button simultaneously on remote controller to switch defrosting mode 1 and defrosting mode 2 8 Compulsory defrosting function When the unit is turned on in heating by remote controller and the set temperature is 16 C press within 5s the indoor unit turns to compulsory defrosting setting and it will send compulsory defrosting mode to outdoor unit When indoor unit received the compulsory defrosting signal from outdoor unit the indoor unit will quit from the compulsory defrosting setting and it will cancel to send compulsory defrosting mode to outdoor unit 9 Refrigerant recovery function Turn to Freon recovery mode After the unit is energized for 5min and the unit is turned on at 16 C under cooling mode press light button on remote controller for 3 times successively within 3s to turn to Freon recovery mode Fo is displayed and it will send Freon recovery mode to
10. 15V and whether the output Yes VSP yellow wire is more than 1 1V The earthing wire is black wire Yes Whether the volta No motor feedback AL terminal blue wire Y Y is more than 1 1V es Replace motor gt N eliminated Yes gt Replace controller a End Note The information above is for reference only 35
11. 2 Specifications 2 1 Unit Specifications Mos s s 5 3 Fan Motor Speed r min x SH H HM M LMIL S D x m MR CC I x ren x coil 511X396X24 511X396X24 511X396X24 Swing Motor Model MP24EB MP24EB MP24EB Level dB SH H MILISL 42 40 36 34 32 31 30 45 42 38 37 35 32 31 50 48 44 43 4 1 40 39 Sound Power Level dB A SH H MIL SL 52 50 46 44 42 41 40 55 52 48 47 45 42 41 60 58 54 53 51 50 49 Dimension WXHXD 700X600X215 700X600X215 700X600X215 Dimension of Carton Box LXVVXH 785X682X280 785X682X280 785X682X280 9 52 3 8 9 52 3 8 12 1 2 The above data is subject to change without notice Please refer to the nameplate of the unit Specifications 2 2 Noise Criteria Curve Tables for Both Models Noise dB A Low Middle High Super High Indoor Fan Motor Rotating Speed Constrction views 3 Construction Views 0 SNI bal EE 0 IN CI i 205 398 LI LT Unit mm Refrigerant System Diagram 4 Refrigerant System Diagram indoor outdoor filter fan gt lt
12. Color symbol Symbol WHITE Color symbol BROWN YE YELLOVV BU BLUE YELLOW GREEN PROTECTIVE EARTH YEGN 5 2 Electrical wiring ROOMTEMP TUBE TEMP RECEIVERAND HAN MOTOR SENSOR SENSOR D SPLAY BOARD NN AP2 DISPLAY ma 9 8 m RT2 RT1 L2 ROOM TUBE DISP DISP2 DC MOTOR IBU 11 XT BU E N 225 2 pK Ll 15 A COM OUT 7 2 nz JUMP ACL Fa 3 SWING DOWN SWING UP CN8 gt y AYEGN YEGN YEN 8 255 APS SELECT STEPPING STEPPING SWITCH MOTOR MOTOR p Ica auc crc R a m ee R RUR eric Tem These circuit diagrams are subject to change without notice please refer to the one supplied with the unit 5 3 Printed Circuit Board
13. Connect the earth wires to the corresponding terminals 4 Pull wires to make sure that they are securely latches up then retain wires with wire retainer 5 In case of connecting to an adapter system Run the remote controller cable and attach the S21 Refer to 11 When connecting go an system 7 securing plate Front metal plate Q A CAUTION Shape wires so that the front metal plate cover will fit securely Firmly secure wire retainer so that wires sustain no external stress 1 203 Aa al Terminal block Electrical component box Wire retainer Use the specified wire type Firmly fix the wires with the terminal screws When wire length exceeds 10m Indoor unit Outdoor unit opolopo use 2 0mmdiameter wires SI 1 O i ol ot HOSVV Firmly fix the wires with the terminal screws 1 Do not use tapped wires stranded wires extensioncords or starburst connections as they may cause overheating electrical shock or fire 2 Do not use locally purchased electrical parts inside the product Do not branch the power for the drain pump etc from the terminal block Doing so may cause electric shock or fire 24
14. FAN gt HEAT T Note Only for models with heating function After energization AUTO mode is defaulted In AUTO mode the set temperature will not be displayed on the LCD and the unit will automatically select the suitable operation mode in accordance with the room temperature to make indoor room comfortable FAN This button is used for setting Fan Speed in the sequence that goes from AUTO Za 49 to 460 then back to Auto Auto a a gt 0 Low speed Medium speed gf High speed SWING Press this button to set up amp down swing angle which circularly changes as below 3b ddp pb OFF gt lt gt lt 2 1 This remote controller is universal If any command 3l gt or gt is sent out the unit will carry out the command as Z Sl indi j No gp gt Z indicates the guide louver swings as 12 12 12 FEEL Press this button to turn on I FEEL function The unit automatically adjust temperature according to the sensed temperature Press this button again to cancel FEEL function d n Press this button to achieve the on and off of healthy and scavenging functions in operation status Press this button for the first time to start scavenging function LCD displays 229 Press the button for the second time to start healthy and scavenging functions simultaneously LCD displays and 4 Press this button for the third time to quit healthy and scavenging functions simult
15. Pipe Connection Nutaccessores oeszoo20 1 32 Ambient Temperature Sensor 320000483 To soa T a The data above are subject to change without notice Exploded Views and Parts list Model MUL 18CON 2 00 9 YE A 317 m 27 28 Exploded Views and Parts list NO MUL 18 CON Product Code CVW010N0060 20012756 11122119 20012601 01002608 05212423 22202462 Centrifugal fan 10312005 Fan Motor 15012123 2 i i i E 20 22 23 24 25 25 27 29 Connecting Cable 400204056 30 390000591 31 06320020 32 390000453 33 Remote Controller 30510134 34 Tube connector sub assy 06643008 Front Panel Assy Filter Sub Assy Front Case Assy Evaporator Assy Temp Sensor sleeving Rear Case assy a Tube Sensor Pipe Connection Nut accessories Ambient Temperature Sensor EE pes 61 2 5 NECS EL NO BEC Eu E DIE 4 EE L b z EN 5 3 25 5 5 5 55 m 32 E ND m The data above are subiect to change vvithout notice Troubleshooting 9 Troubleshooting 9 1 Malfunction Display of Indoor Unit 1 Malfunction display requirement When th
16. aneously Press the button for the fourth time to start healthy function LCD display A Press this button again to repeat the operation above Function and Control Ell SLEEP Press this button can select Sleep 1 Sleep 2 Sleep3 lt cancel the Sleep circulate betvveen these after electrified Sleep Cancel is defaulted Sleep 1 is Sleep mode 1 in Cool Dehumidify modes sleep status after run for one hour the main unit setting temperature will increase 1 C setting temperature increased 2 C the unit will run at this setting temperature In Heat mode sleep status after run for one hour the setting temperature will decrease 1 2 hours setting temperature will decrease 2 then the unit will run at this setting temperature Sleep2 is sleep mode 2 that is air conditioner will run according to the presetting a group of sleep temperature curve Sleep 3 the sleep curve setting under Sleep mode by DIY 1 Under Sleep 3 mode press Turbo button for a long time remote control enters into user individuation sleep setting status at this time the time of remote control will display 1hour the setting temperature 88 will display the corresponding temperature of last setting sleep curve and blink The first entering will display according to the initial curve setting value of original factory 2 Adjust and button could change the corresponding setting temperature after adjuste
17. ction 1 Jumper cap hasn t been inserted on mainboard 2 Jumper cap hasn t been inserted tightly 3 Jumper cap is damaged 4 The corresponding circuit of mainbaord is abnormal The check flow chart is as below Display displays C5 heck whether the mainbaord of controller is inserted with the jumper cap Insert the jumper Is malfunction Check whether the jumper cap is poorly connected No eliminated Re insert the jumper Yes gt Is malfunction No Replace the jumper cap Is malfunction eliminated Yes eliminated No v the malfunction of mainboard replace the mainboard End Yes gt 34 Troubleshooting 4 Troubleshooting for H6 malfunction Start the troubleshooting for H6 malfunction Check whether the terminal of DC motor is connected tight Y Insert the motor terminal tightly yes Yes gt Pull blade With hand to see N whether it can rotate smoothly Re assemble blade Yes and motor correctly mafuncti liminate Yes gt Energize unit and turn on the unit After the horizontal louver opens for 1 min measure whether the input DC voltage VDC red wire of motor is300s whether the DC voltage VCC white wireO is
18. d press Trubo button for confirmation 3 At this time 1hour will be automatically increased at the timer postion on the remote control that are 2hours or 3hours or 8hours the place of setting temperature 88 will display the corresponding temperature of last setting sleep curve and blink 4 Repeat the above step 2 3 operation until 8hours temperature setting finished sleep curve setting finished at this time the remote control will resume the original timer display temperature display will resume to original setting temperature Sleep3 the sleep curve setting under Sleep mode by DIY could be inquired The user could accord to sleep curve setting method to inquire the presetting sleep curve enter into user individuation sleep setting status but do not change the temperature press Turbo button directly for confirmation Note In the above presetting or enquiry procedure if continuously within 10s there is no button pressed the sleep curve setting vvithin10s there is no button pressed the sleep curve setting status will be automatically quit and resume to display the original displaying In the presetting or enquiry procedure press ON OFF button Mode button Timer button or Sleep button the sleep curve setting or enquiry status will quit similarly TJ TEMP Pressing TEMP button set temperature 2 indoor ambient temperature and outdoor ambient temperatur and blank is displayed circula
19. detection dd j j status of expansion valve free match Mode shock E7 blink 7 times Freon recovery mode Fo blink once blink once Defrosting and oil return under heating H1 blink once blink Failure start up of compressor Lc 11 times Discharge high temperature protection of compressor E4 blink 4 times Overload protection E8 blink 8 times Overcurrent protection of the complete unit E5 blink 5 times blink Overcurrent protection of phase current P5 15 times Desynchronizing of compressor H7 blink 7 times Loss phase inverse phase protection for compressor Ld Module current protection IPM protection H5 blink 5 times blink Low voltage protection of DC bus bar PL 21 times blink High voltage protection of DC bus bar PH 11 times PFC protection HC blink 6 times Limit decrease frequency due to current protection of the complete F8 blink unit 8 times Limit decrease frequency due to module current protection phase E j j n current blink Limit decrease frequency due to discharge F9 9 times Limit decrease frequency due to freeze protection FH blink twice blink twice blink Limit decrease frequency due to overload F6 6 times blink Limit decrease frequency due to module temperature protection EU d blink 6 times imes blink Oil return under cooling F7 7 times Cold air prevention protection E9 blink 9 times Freeze protection E2 blink twice Note Please refer to service manual for the troubleshooting proced
20. e replacing batteries batteries out and reinsert them after 30 it still can t operate properly replace the batteries Function and Control 6 2 Description of each control operation 1 Cooling mode 1 Under this mode the fan and the up swing will operate at setting status The temperature setting range is 16 30 2 The unit is stopped because of malfunction of outdoor unit or protection The indoor unit keeps original operation status and the error code is displayed 3 Indoor unit is stopped due to mode shock 2 Drying mode 1 Under this mode the fan operates at low speed and the swing operates at setting status The temperature setting range is 16 30 C 2 The unit is stopped because of malfunction of outdoor unit or protection The indoor unit keeps original operation status and the error code is displayed 3 Heating mode 1 Under this mode the temperature setting range is 16 30 2 Working condition and process for heating When the unit is turned on under heating mode the indoor unit turns to cold air prevention status When the unit is turned off and the indoor unit has been started up before the indoor unit blows the residual heat 3 Protection function When the compressor is stopped due to malfunction under heating mode the indoor unit blows the residual heat 4 Blow residual heat When the unit stops operation as it reaches the temperature point indoor unit will continue to ru
21. erates at auto fan mode If it switch to auto mode from other modes the unit will keep previous operation mode when it turns to dry mode the unit operates at auto fan mode 5 Protection function Protection function is the same as that in cooling or heating mode 5 Fan mode Under fan mode only indoor fan and swing operates When it operates at auto fan speed it will operate according to auto fan speed condition in cooling 6 Mode shock If the mode shock is 1 which is received by indoor unit from outdoor unit the loads of indoor unit indoor unit auxiliary heating swing stop operation and the error code is displayed The mode sent to outdoor unit is still remote control receiving mode The unit will be turned off during mode shock If timer ON is reached and the mode shock is 1 which is received by indoor unit from outdoor unit the loads of indoor unit indoor unit auxiliary heating swing stop operation and the error code is displayed The mode sent to outdoor unit is still remote control receiving mode 7 Other control 1 Buzzer Upon energization or availably operating the unit or remote controller the buzzer will give out a beep 2 Auto button If this button is pressed the unit will operate in AUTO mode and indoor fan will operate at auto speed meanwhile the swing motor 13 14 Function and Control operates Press this button again to turn off the unit 3 8 C heating function Under hea
22. ere are several malfunctions they will be displayed circularly 2 Malfunction display method 1 Hardware malfunction immediate display refer to malfunction display table 2 Operation state immediate display refer to malfunction display table 3 Other malfunctions it is displayed after the compressor stops for 2005 refer to malfunction display table Note when the compressor is restarted the malfunction display delay time 200s is cleared 4 When the unit is under limit frequency or frequency drop state the display can be controlled via remote controller 3 Malfunction display control The indicator lamp and dual 8 nixie tube displays shall be synchronized That is when the indicator lamp blinks the dual 8 nixie tube displays the corresponding malfunction code 4 Display control via remote controller Enter display control press light button successively for 4 times within 3s to display the corresponding malfunction code Exit display control pressing light button successively for 4 times within 3s or after display is shown for 5min the display will terminate Display under test state Dual 8 nixie tube display minimum cooling heating P0 middle cooling heating P3 Nominal cooling heating P1 maximum cooling heating P2 Corresponding indicator lamp will be on for 0 3s and off for 0 3s Error Code List Indicator Display Dual 8 Nixie Malfunction Name
23. erformed by a licensed technician according to local regulations and the instructions given in this manual Before installing modifying or servicing system main electrical disconnect switch must be in the OFF position There may be more than 1 disconnect switch Lock out and tag switch with a suitable warning label Never supply power to the unit unless all wiring and tub ing are completed reconnected and checked This system adopts highly dangerous electrical voltage Incorrect connection or inadequate grounding can cause personal injury or death Stick to the wiring diagram and all the instructions when wiring Have the unit adequately grounded in accordance with local electrical codes Have all wiring connected tightly Loose connection may lead to overheating and a possible fire hazard All installation or repair work shall be performed by your dea ler or a specialized subcontractor as there is the risk of fire electric shock explosion or injury Safety Precautions Make sure the outdoor unit is installed on a stable level surface with no accumulation of snow leaves or trash beside Make sure the ceiling wall is strong enough to bear the weight of the unit Make sure the noise of the outdoor unit does not disturb neighbors Follow all the installation instructions to minimize the risk of damage from earthquakes typhoons or strong winds Avoid contact between refrigerant and fire as it ge
24. f heat or steam 5 there is no source of machine oil vapour this may shorten indoor unit life 6 cool warm air is circulated throughout the room 7 the unit is away from electronic ignition type fluorwscent lamps inverter or rapid stert type as they may shorten the remote controller range 8 the unit is at least 1 metre away from any television or radio set unit may cause interference with the picture or sound 7 2 Indoor Unit Installation Drawings The indoor unit may be mounted in any of the three styles shown here Exposed Half conceated Concealed Mounting plate gt BONN e RS UN Molding e 7 Floor Installation Wall Installation 7 Grid field supply is S S AN N Installation Manual Location for securing the installation panel 30 25 2 Unit mm 150cm or more Front grille Front panel 150cm or more p 150cm or more Installation Manual 7 3 Installation Tips 1 Removing and installing front pane Removal method 1 Slide until the 2 stoppers click into place 2 Open the front panel forward and undo the string 3 Remove the front panel Installation method 1 Attach the front grille and front panel after pulling the string around them 2 Clo
25. forward Follow the arrows to disengage the clasps on the front case to remove it Follow the procedure below when removing the slit portions B For Moldings Remove the pillars Remove the slit portions on the bottom frame using nippers For Side Piping Remove the pillars 1 Remove the 7screws 2 Remove the upper casing 2 tabs 3 Remove the left and right casings 2 tabs on each side 4 Remove the slit portions on the bottom frame and casings using nippers 5 by following the steps in reverse order 3 gt 2 gt 1j Casing Remove the pillar 4 2 Installation Casing j Front grille Remove front grille V V NZ Remove 4 screws Open the front panel 3 Side casings 3 Side casings Remove 7 screws Remove the pillar Bottom frame Casing Remove the pillar Secure using 6 screws for floor installations Do not forget to secure to the rear wall For wall installations secure the mounting plate using 5 screws and the indoor unit using 4 screws 20 Installation Manual The mounting plate should be installed on a wall which can support the weight of the indoor unit 1 Temporarily secure the mounting plate to the wall make sure that the panel is completely level and mark the bori
26. ing press TIMER ON button to confirm Press T OFF button to initiate the auto off timer To cancel the auto timer program simply press the button again TIMER OFF setting is the same as TIMER ON 11 Function and Control 12 TURBO Press this button to activate deactivate the Turbo function which enables the unit to reach the preset temperature in the shortest time In COOL mode the unit will blow strong cooling air at super high fan speed In HEAT mode the unit will blow strong heating air at super high fan speed LIGHT Press LIGHT button to turn on the display s light and press this button again to turn off the display s light If the light is turned on 9 is displayed If the light is turned off disappears Pressing X FAN button in COOL or DRY mode the icon dq is displayed and the indoor fan will continue operation for 10 minutes in order to dry the indoor unit even though you have turned off the unit After energization X FAN OFF is defaulted X FAN is not available in AUTO FAN or HEAT mode Combination of and buttons About lock Press and buttons simultaneously to lock or unlock the keypad If the remote controller is locked is displayed In this case pressing any button blinks three times In Combination of MODE and buttons About switch between Fahrenheit and centigrade At unit OFF press MODE and buttons simultaneously to switch between
27. n for 60s The fan speed can t be switched during blowing residual heat period The upper horizontal louver will turn to the defaulted position in cooling When the unit operates under heating mode or auto heating mode compressor will be turned on and the corresponding electric expansion valve is more than 65 and the unit stops operation during the operation status of indoor unit The upper horizontal louver will turn to the defaulted position in heating mode The indoor unit operates at low speed for 10s and then the unit stops operation 5 Defrosting oil returning As it received the signal of defrosting and oil returning from outdoor unit the upper horizontal louver will turn to the minimum angle in cooling 10s later the in door fan stop operation During defrosting and oil returning process and they are quitted within 5mins all malfunctions for indoor tube temperature sensor won t be detected 4 Working process for AUTO mode Mode judgment will be performed every 30s Under AUTO mode standard cooling Tpreset 25 C 77 F standard heating Tpreset 20 68 F and standard fan Tpreset 25 C 77 F 1 When Tamb226 C 79 F the unit operation in cooling mode 2 Heating pump unit When Tambs19 C 66 F the unit operates in heating mode 3 Cooling only unit Tambs19 C 667 the unit operates in fanmode 4 When 19 C lt Tindoor amb 26 C if it turns to auto mode as the unit is turned on for the first time the unit will op
28. n of the on site piping matching it up with the connecting portion 2 Secure the slit on the refrigerant piping side with the butt joint on the auxiliary piping using the tape making sure there are no gaps 3 Wrap the slit and butt joint with the included insulation sheet making sure there are no gaps Refrigerant pipe Refrigerant Refrigerant pipe pipe lil Slit gt gt T Insulation sheet Auxiliary pipe N CAUTION 1 Insulate the joint of the pipes securely Incomplete insulation may lead to water leakage 2 Push the pipe inside so it does not place undue force on the front grille 9 Connecting the drain hose Insert the supplied C drain hose into the socket of the drain pan Fully insert the drain hose until it adheres to a gt Drain pan seat of the socket Seal RA Drain hose ZN Drain pan f Seal 23 Installation Manual 10 Wiring With a Multi indoor unit install as described in the installation manual supplied with the Multi outdoor unit Live the sensor securing plate remove the front metal plate cover and connect the branch wiring to the terminal block 1 Strip wire ends 15mm 2 Mach wire colours with terminal numbers on indoor and outdoor unit s terminal blocks and firmly screw wires to the corresponding terminals 3
29. ndoor tube temperature sensor 5 Terminal used for controlling the 40 Indoor ambient temperature lower swing switch sensor Function and Control 6 Function and Control 6 1 Remote Control Operations ON OFF Press it to start or stop operation Press itto decrease temperature setting t Press it to increase temperature setting MODE Press it to select operation mode AUTO COOL DRY FAN HEAT FAN Press it to set fan speed I3 SWING Press it set swing angle _ e FEEL H A FAN Press it to set HEALTH or AIR function El SLEEP TEMP QUIET Press itto set QUIET function CLOCK Press it set clock T ON T OFF Press it to set auto off auto on timer TURBO LIGHT Press it to turn on off the light X FAN 10 Function and Control ON OFF Press this button to turn on the unit Press this button again to turn off the unit El Press this button to decrease set temperature Holding it down above 2 seconds rapidly decreases set temperature In AUTO mode set temperature is not adjustable T Press this button to increase set temperature Holding it down above 2 seconds rapidly increases set temperature In AUTO mode set temperature is not adjustable MODE Each time you press this button a mode is selected in a sequence that goes from AUTO COOL DRY FAN and HEAT as the following AUTO gt COOL gt DRY
30. nerates poisonous gas Apply specified refrigerant only Never have it mixed with any other refrigerant Never have air remain in the refrigerant line as it may lead to rupture and other hazards Make sure no refrigerant gas is leaking out when install ation is completed Should there be refrigerant leakage the density of refri gerant in the air shall in no way exceed its limited value or it may lead to explosion Keep your fingers and clothing away from any moving parts Clear the site after installation Make sure no foreign ob jects are left in the unit Always ensure effective grounding for the unit N Caution Never install the unit in a place where a combustible gas might leak or it may lead to fire or explosion Make a proper provision against noise when the unit is installed at a telecommunication center or hospital Provide an electric leak breaker when it is installed in a watery place Never wash the unit with water Handle unit transportation with care The unit should not be carried by only one person if it is more than 20kg Never touch the heat exchanger fins with bare hands Never touch the compressor or refrigerant piping without wearing glove Do not have the unit operate without air filter Should any emergency occur stop the unit and discon nect the power immediately Properly insulate any tubing running inside the room to prevent the water from damaging the wall Specifications
31. ng points on the wall 2 Secure the mounting plate to the wall with screws Floor Installation Wall Installation gt EUER Molding 6screws 6screws 3 Once refrigerant piping and drain piping connections are complete fill in the gap of the through hole with putty A gap can lead to condensation on the refrigerant pipe and drain pipe and the entry of insects into the pipes 4 Attach the front panel and front grille in their original positions once all connections are complete 5 Flaring the pipe end 1 Cut the pipe end with a pipe cutter 2 Remove burrs with the cut surface facing downward so that the chips do not enter the pipe 3 Fit the flare nut on the pipe 4 Flare the pipe 5 Check that the flaring is properly made WARNING 1 DO notuse mineral oil on flared part N Prevent mineral oil from getting into the system as this would reduce the lifetime of the units Never use piping which had been used for previous installations Only use parts which are delivered with the unit Do never install a drier to this R410A unit in order to guarantee its lifetime a A co The drying material may dissolve and damage the system o ncomplete flaring may cause refrigerant gas leakage Flare s inner surface must be scratch free Flaring Se
32. outdoor unit Quit from Freon recovery mode After it turns to Freon mode if it receives any signal from remote controller or it turns to Freon recovery mode for 25 mins it will quit from Freon recovery mode Turn to the action for Freon recovery mode indoor unit will be turned on in cooling mode The fan speed is super high fan speed and the set temperature is 16 The horizontal louver will turn to the minimum operation angle Quit the action for Freon recovery mode The indoor fan operates at the previous set status by remote controller 10 Pilot run function When the set temperature is 30 C under cooling mode press continuously within 3s the indoor unit turns to pilot run setting mode and it will send pilot run mode to outdoor unit Pilot run mode it operates under cooling mode and dd is displayed Quit the pilot run mode and indoor unit cancels dd display If it receives wrong wire connection of malfunction of expansion valve from outdoor unit dn will be displayed Installation Manual T Installation Manual 7 1 Choosing an Installation Site Before choosing the installation site obtain user approval Indoor unit The indoor unit should be sited in a place where 1 the restrictions on installation specified in the indoor unit installation drawings are met 2 both air intake and exhaust have clear paths met 3 the unit is not in the path of direct sunlight 4 the unit is away from the source o
33. pending on which side of the pipe is taken out 3 For piping see6 Connecting the refrigerant pipe under Indoor Unit Installation 1 4 Allow space around the pipe for a easier indoor unit pipe connection Unit mm Y Wall 2 m si Left bottom piping 75 75 Right bottom piping gt lt gt l s Left back piping 75 75 Right back piping Left right piping 1 T x N CAUTION Min allowable length The suggested shortest pipe length is 2 5m in order to avoid noise from the outdoor unit and vibration Mechanical noise and vibration may occur depending on how the unit is installed and the environment in which it is used See the installation manual for the outdoor unit for the maximum pipe length For multi connections see the installation manual for the multi outdoor unit Refrigerant pipe 0 350 75 18 Installation Manual 2 Boring a wall hole and installing wall embedded pipe For walls containing metal frame or metal board sure to use a wall embedded i i Insid Outsid pipe and wall cover in the feed through hole to see lt gt utside Be sure to caulk the gaps around the pipes with caulking material to prevent field supply 7 2 2 vvater leakage 1 Bore a feed through hole of 65mm in the vvall so it has a dov
34. rly The unit defaults not to display the icon During operation of TEMP button the set temperature is always displayed Note Outdoor ambient temperature is only displayed for some models QUIET m Press this button the Quiet status is under the Auto Quiet mode display signal and Quiet mode display QU singal and Quiet OFF there is no signal of displayed after powered on the Quiet OFF is defaulted Note the Quiet function cannot be set up in Fan and Dry mode Under the Quiet mode Display qa Under the Quiet mode Display signal the fan speed is not available CLOCK Press CLOCK button blinking Within 5 seconds pressing or button adjusts the present time Holding down either button above 2 seconds increases or decreases the time by 1 minute every 0 5 second and then by 10 minutes every 0 5 second During blinking after setting press CLOCK button again to confirm the setting and then will be constantly displayed T ON T OFF Press T ON button to initiate the auto ON timer To cancel the auto timer program simply press this button again After press of this button disappears and ON blinks 00 00 is displayed for ON time setting Within 5 seconds press or button to adjust the time value Every press of either button changes the time setting by 1 minute Holding down either button rapidly changes the time setting by 1 minute and then 10 minutes Within 5 Seconds after sett
35. se the front panel and slide until the stoppers click outside 2 Removing and installing front grille Removal method 1 Open front panel Front 2 Remove the 4 screws and remove the front grille while grille pulling it forward 3 tabs Installation peaa Front panel penan 1 Secure the front grille with the 4 installation screws 3 tabs 2 Return the front panel to the original position 3 How to set the different addresses Remove 4 screws Open the front panel When two indoor units are installed in one room the two wireless remote controllers can be set for different addresses 1 Remove the front grille 2 Live the sensor securing plate and remove the front metal plate cover 3 Remove the electric box 1 screw 4 Remove the thermistor 5 Remove the side metal plate cover 7 tabs 6 Cut the address jumper JA on the printed circuit board 8155 N L 2 3 3 Remove 1 screw A d p 4 Thermistor S 2 Front metal plate cover 4 7 5 Side metal plate cover 3i 4 17 Installation Manual 7 4 Indoor unit Installation 1 Refrigerant piping 1 Drill a hole 65mm in diameter in the spot indicated by symbol in the illustration ad below 2 The location of the hole is different de
36. t exactly at the position shovvn belovv The pipe end must be evenly flared in a perfect circle 1 Flare tool for RA10A Conventional flare tool Clutch type Clutch type VVing nut type G 1 i Rigid type Imperial type Cut exactly that th i 005mm 10 15mm 1520 _ uti at right d s 152 flare nut is fitted angles burrs 21 Installation Manual 6 Connecting the refrigerant pipe 1 Use torque wrenches when tightening the flare nuts to prevent damage to the flare nuts and gas leaks Coat here with refrigeration oil 2 Align the centres of both flares and tighten the flares and tighten the flare nuts 3 or 4 turns by hand Then tighten them fully with the torque wrenches 3 To prevent gas leakage apply refrigeration oil on both inner and outer surfaces in the flare Use refrigeration oil for R410A Flare nut tightening torque 25 35 class 25 35 50 class 3 8 inch 1 2 inch 1 4 inch 32 7 39 9 N m 49 5 60 3 N m 14 2 17 2 N m 333 407kfg cm 505 615kgf cm 144 175kgf cm B sm l place a cap 6 1 Caution on piping handling 1 Protect the open end of the pipe against dust and moisture 2 AlI pipe bends should be as gentle as possible Use a pipe bender for If no flare cap is available cover bending the flare mouth Sy e oe
37. ting mode press buttons simultaneously Under this mode cold air prevention protection will be shielded 4 1 FEEL function VVhen FEEL is received the controller vvill operate according to the ambient temperature sent by the remote controller For defrosting and cold blovv prevention the unit operates according to the ambient temperature sensed by the air conditioner The remote controller vvill send ambient temperature data to the controller every 10min VVhen the data has not been after 11mins the unit will operate according to the temperature sensed by the air conditioner If FEEL function is not selected the ambient temperature will be that sensed by the air conditioner FEEL function will not to be memorized 5 Timer function General timer and clock timer functions are compatible by equipping remote controller with different functions General Timer Timer ON can be set at unit OFF If selected ON time is reached the unit will start to operate according to previous setting status Time setting range is 0 5 24hr in 30 minute increments Timer OFF can be set at unit ON If selected OFF time is reached the unit will stop operation Time setting range is 0 5 24hr in 30 minute increments 6 Sleep function This mode is only valid in cooling and heating modes The unit will select proper sleep curve to operate according to different set temperature 7 Switchover function for defrosting
38. ure for outdoor unit 30 Troubleshooting 9 2 How to Check Simply the Main Part 1 Troubleshooting for malfunction of temperature sensor main check point Whether the temperature sensor is broken or damaged Whether the temperature sensor terminal is loosened or not connected Whether the mainboard is damged Check flow chart Start the troubleshooting for temperature sensor Check whether the temperature sensor and wiring terminal is loosened or poorly connected Insert the temperature sensor well m Yes Is mafunction eliminated Check whether the temperature sensor is normal by Replace temperature with refering the resistance value of the same mode temperature sensor Is mafunction eliminated Replace the controlle with the same model Troubleshooting 32 2 Troubleshooting for communiction malfunction Main check point Check whether the connection wire for indoor and outdoor units and the wires inside the indoor unit is connected well Check whether the mainboards of indoor unit or outdoor unit are damaged Check flow chart Communication malfunction for some indoor unit Disconnect the power and check connection wire for indoor and outdoor units and wires inside electric box are connected correctly Wires are connected Connect wires according Is malfunction correctly to wiring diagram eliminate De energize the unit e
39. vn slope tovvard the outside F 2 Insert a wall pipe into the hole 3 lnsert a wall cover into wall pipe 4 After completing refrigerant piping wiring and drain piping caulk pipe hole gap with putty Wall embedded pipe field supply 3 Drain piping 1 Use commercial regid polyvinyl chloride pipe general VP 20 pipe outer diameter 26mm inner diameter 20mm the drain pipe 2 The drain hose outer diameter 18mm at connecting end 220mm long is supplied with the indoor unit Prepare the drain pipe picture below position 3 The drain pipe should be inclined downward so that water will flow smoothly without any accumulation Should not be trap 4 Insert the drain hose to this depth so it won t be pulled out of the drain pipe 5 lnsulate the indoor drain pipe with 10mm or more of insulation material to prevent condensation 6 Remove the air filters and pour some water into the drain pan to check the water flows smoothly 99 Must be no trap Do not touch water x 190 Drain hose 50mm or more Reducer Vinyl chloride drain pipe N CAUTION Use polyvinyl chloride adhesive agent for gluing Failure to do so may cause water leakage 19 Installation Manual 4 Installing indoor unit 4 1 Preparation Open the front panel remove the 4 screws and dis mount the front grille while pulling it
40. xchange the communication wire for the indoor unit with normal communication and the indoor unit with malfunction energize the unit and then wait for 3mins Whether the indoor unit Replace mainboard of resumes normal outdoor unit Replace mainbaord of indoor uni with malfunction Troubleshooting All indoor units alarms communication malfunction Disconnect the power and check connection wire for indoor and outdoor units and wires inside electric box are connected correctly Connect wire connectly according to wiring Is malfunction eliminated Wires are connected correctly Yes diagram Disconnect the power and check whether the connection wires between mainboard of outdoor unit and filter palte are connected correctly by referring to wiring diagram Connect wire connectly according to wiring Wires are connected correctly Is malfunction eliminated diagram Whether connection Replace connection wires are damaged wires Is malfunction eliminated Check whether the neutral wire for mainboard of outdoor unit has power input Whether there s Replace filter plate of Is malfunction eliminated power input outdoor unit Replace mainboard of outdoor unit Communication is Replace mainboard of resumed indoor unit 33 Troubleshooting 3 Troubleshooting for C5 malfunction Main causes for C5 malfun
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