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INDOOR UNITS Service Manual

1. E Ad L 4 install hanger Liquid side A 5 1 225 Drain EA Gas side gt 425 Drain pipe Test mouth amp Test cover 7 2 Gli amp v h 1 J D E 25 Drain connecting pipe k o forpump LU re ir i Electric control box d Fresh air intake E F a EJ 4 Air filter optional S o E air inlet from bottom side Size of install Outline dimension mm hanger Air outlet opening size Air return opening size Capacity Btu tmm P 119 200 ios de a AT ax 8 713 119 815 200 E 2 w 28 47 32 8 19 4 4 Floor Console 12000Btu h 18000Btu h
2. f HOOK m G D m B N 2 E 20 5 Service Space unit mm 5 1 Eight Way Cassette compact 08 XU aT y de wt 5 2 Ceiling amp Floor Flex Mount SO AS NN N A i 5mm XN MX a a i WC Ground i 85mm DD A 195mm 21 NS oh i Y000mm N SSS EN MN Wawas
3. V 260 17 4 2 Ceiling amp Floor Flex Mount 12000Btu h 18000Btu h N IMBRE DR _ S 2 79 z I Ses 100_ N Refrigerant pipe hole optional STA co E J Hanging arm Ceiling Installation for ceiling _ B Floor Installation IS B 4 Hanging arm for Floor 506 y Capacity Btu h 990 505 907 12000 1 8000 39 20 23 18 4 3 Ceiling Concealed Ducted 12000Btu h 18000Btu h Air filter optional air inlet from rear side U
4. 710 28 250 9 8 190 7 5 790 31 1 265 10 4 198 7 8 920 36 2 292 11 5 223 8 8 15 Dimension of installation Model R mm in L mm in H mm in hole mm in WBOO9GMFI16MLD 111 5 4 4 100 3 9 45 1 8 5 2 5 WBO12GMFI16MLD 151 5 9 100 3 9 45 1 8 WBO18GMFI16MLD 186 5 7 3 150 5 9 45 1 8 65 2 56 16 4 1 New Eight Way Cassette type compact 12000Btu h 18000Btu h 647 Panel 570 Body 545 Hook location 945 Hook location 570 647 Panel
5. No Ihe unit operates normally Find out the cause and have it solved For example check Shut off the power supply rotate the fan by hand No U Does it rotate properly blocked or the bearing is broken Yes v Check the wires of fan motor Are all the No Correct the connections connections good Yes i If the Check whether the fan malfunction is Replace the fan 5 motor is normal through No still existing motor index 1 replace the li A main PCB No Yes Replace the main PCB Check whether the main PCB is normal through index 2 No p The malfunction is solved Yes 40 Index 1 1 Indoor fan motor Measure the resistance value of each winding by using the tester Pd I a Input Terminal 4 Red Red 1 5 Black 2 White N IN N White 3 O V V V V O Black 7 p F For the definite value of the resistance refer to 9 5 Trouble Criterion Of Main Parts 2 Indoor DC fan motor control chip is inside fan motor Measure the resistance value of each winding by using the tester If any resistance value is zero the fan motor must have problems and need to be replaced For console Blue Yello
6. According Pg FACTORY to I i DS il SETTING Function NEWFAN PUMP FORANTI COLDWIND o 10 TO WIRE SEE _ 1 28 30 According CN6 52 dd BLACK MIDDLE PIPE TEMP i CN3 CN26 04 28 stop Function gt E ELA 44 FAN MOTOR CN23 CN33 Q ROOM TEMP 2 FAN FAN El s E WHITE NO POWER Z wrower Oi 75 2 5 gt FACTORY FOR SETTING NETADDRESS FACTORY sme H pi Ti 1 T TM lI T CODE Remote Alarm weboness 0 18 16 81 32 87 46 63 22 i WIRING DIAGRAM INDOOR UNIT FAN WHITE TE se 202052290088 gt gt gt ILCONTROLLER POWER SETTING WHITE 4 i 5 WHITE j RRRA U 3 E CN40 1 p er r r 20 26 sms s A P2 J INDOOR UNIT i FOR TEMP COMPENSATION L MAINBOARD pend CN24 q 3 gt De 5444 S S D 5 1 D 3 o CODE According a E to E Function OL I L oa 409 loo 5 2 OBE een FORANTI COLD WIND 32 2 el e d 5 D 8 lt Z L x 10 DISPLAY TO WIRE BOARD CONTROLLER According to NN pas KIT CN3 CN26 4 BLACK MIDDLE PIPE TEMP
7. Yes v Change Outdoor Main PCB Yes indoor units number correct Check on the outdoor check point 2 for dual zone 3 for tri zone 4 for qua zone Refer PIC 4 Trouble is solved No MS No second time Change outdoor unit PCB assembly include wiring totally 37 Pic 1 Use a multimeter to test the DC voltage between L2 port and S port of outdoor unit The red pin of multimeter connects with L2 port while the black pin is for S port When is running normally the voltage will move alternately between positive value and negative value Pic 2 IPM for dual trio quad zone Power some modles Operating 38 PIC3 Main board LED when power and unit standby PIC 4 Check point button press 1 time for check how many indoor units are connected For 2014 and Newer OUTDOOR Units Check point button press 18 times for check how many indoor units are connected for Pre 2014 OUTDOOR Units 39 9 4 1 3 Indoor fan speed has been out of control diagnosis and solution When indoor fan speed stays too low 300RPM for certain time the unit will stop and the LED will display the failure Wiring mistake O Fan ass y faulty Fan motor faulty PCB faulty Trouble shooting Shut off the power supply and turn it on 1 minute later Is it still displaying the error code Yes
8. Check PCB board or replace the indoor main PCB 49 9 4 1 10 Mode conflict The indoor units cannot work cooling mode and heating at same time Heating mode has a priority When Indoor unit A working in cooling mode or fan mode indoor unit B is set to heating mode then A will change to off and B will work in heating mode When Indoor unit A working in heating mode and indoor unit B is set to cooling mode or fan mode then B will change to stand by and A will have no change Cooling mode Heating Mode Fan Off ko 1 e JA BR END No No mode conflict Yes Mode conflict 50 9 4 2 Outdoor unit trouble shooting For Newer 2014 and Newer YNO18GMFI16M2D YN027GMFI16M3D YNO30GNFI16M3D YNO36GMFI16M4D Models 9 4 2 1 EO Outdoor EEPROM malfunction error diagnosis and solution Installation mistake PCB faulty main chip does not receive feedback from EEPROM chip Trouble shooting Outdoor EEPROM malfunction Yes If the EEPROM chip is welded on PCB replace the PCB directly Otherwise No Insert the EEPROM well check whether the EEPROM chip plugged in PCB well Yes v Replace the outdoor main board EEPROM a read only memory whose contents can be erased and reprogrammed using a pulsed voltage For the location of EEPROM chip please refer to the below photos O
9. the sensor 57 9 4 2 5 Voltage protection error diagnosis and solution An abnormal voltage rise or drop is detected by checking the specified voltage detection circuit Power supply problems System leakage or block PCB faulty Trouble shooting Voltage protection Y Check the voltage of outdoor unit power supply whether the voltage No Check the power supply between 11 and N L2 is about 187 253VAC Yes v Check whether the voltage of IPM board P and N is normal DC277 356V for 18 27 DC277 410V for 36KBtu h No v Replace bridge rectifiers and then check whether the system can run normally Only for qua zone No lt v Replace IPM board and N then check whether the Yes system can run normally No v v Replace outdoor main board 7 rouble is solved 58 for dual trio zone 3 e i w B TE i 7 I ea IPM for quad zone P N for quad zone P N for dual trio zone 59 bridge rectifier for dual tri zone bridge rectifier for quad zone 60 61 Remark Measure the DC voltage between and port The normal value should be 190V 250V 9 4 2 6 6 module protection error diag
10. A AD FAN MOTOR O eae 5 Is x WHITE NOPOWER OFF ON z 3 REQUEST DI i Is 5 E ON OFF ALARMI CN5 oo SETTING Pe m WATER LEVEL SWITCH an j L a RED BLACK YELLOW qu r U Lun len d T H L L1 N L2 Gc d I I i Remote Alarm Control Output TO OUTDOOR UNIT TO OUTDOOR UNIT NETADDRESS 16 31 32 47 48 63 OUTDOOR POWER SUPPLY FOR INDOOR POWER SUPPLY 28 FBO12GMFI16MLD Floor Console Models FUNCTION OF SWITCHES TO WIRE CONTROLLER WIRING DIAGRAM INDOOR UNIT ARA rn A CONNECTORS SWITCH BOARD CN101 DISPLAY BOARD CN201 CN202 NZ LE _OFF _ URP _ MAIN CONTROL BOARD TYPE SELECTION SW1 ON THE MAIN CONTROL BOARD BEE SW2 O O O BB BG BB BB xsAN VYxs VN x N VN M XP3 XS4 RT2 A BLACK WHITE XS3 NOTICE 1 THE TYPE SELECTION AND MO MU HAS BEEN SET BEFORE LEAVING THE FACTORY ANYONE CAN T MODIFY IT EXCEPT THE MAINTENANCE PERSON ili THE STRONGEST LEVEL OF A IR FLOW RATE o TI THE SECOND STRONGEST PIPE ROOM 1 6 MODULE TO CCM POWER SUPPLY RER CN2O FACTORY SETTING HH LEVEL OF AIR FLOW R
11. IPM module protection error diagnosis and solution When the voltage signal that IPM send to compressor drive chip is abnormal the display LED will show and will turn off ErrorCode 00 Wiring mistake IPM malfunction Outdoor fan ass y faulty Compressor malfunction Outdoor PCB faulty Trouble shooting IPM module protection Check whether the voltage range of P N on IPM module is normal DC277 356V for 18 27KBtu h DC277 410V for 36KBtu h Check whether the input power supply is correct 208 230V 1 60Hz Regulate it to correct then check whether the system can work normally No Yes heck whether the connecting line between main board and the IPM module is connected tightly Connect it tightly check ok or not Check whether the power supply line is connected correctly and tightly Connect it correctly and tightly check ok or not Yes Yeg No eck whether the connecting line of the compressor is onnected correctly or tightly Connect it well check ok or not Check whether the line in E part box are connected tightly Connect it tightly check ok or not Yes Replace the IPM module check whether the system can work normally D Check whether the bridge rectifiers are normal Use the multimeter to measure the resistance between each two termina
12. O N N N O S gi HA N OO NIN gt e O EIN NA gt N o o S O w Qo 103 13 59 13 11 12 65 12 21 11 79 11 38 10 99 10 61 10 25 9 902 9 569 9 248 8 94 8 643 8 358 8 084 7 82 7 566 7 321 7 086 6 859 6 641 6 43 6 228 6 033 5 844 5 663 5 488 5 32 5 157 4 849 4 703 4 562 4 426 4 294 4 167 4 045 3 927 3 812 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 20 21 22 23 24 25 26 27 28 29 130 a a M i Maa i Ma B 25 50 3 702 3 595 3 492 3 392 3 296 3 203 3 113 3 025 2 941 2 86 2 781 2 704 2 63 2 559 2 489 2 422 2 357 2 294 2 233 2 174 2 117 2 061 2 007 1 955 1 905 1 856 1 808 1 762 1 717 1 674 1 632 3950K e R 90 C 5K0 3 3 10 11 12 13 14 15 16 17 18 19 20 21 22 F 48 50 52 54 56 58 60 62 64 66 68 70 72 23 24 25 26 27 28 29 30 31 32 33 34 35 74 76 78 80 82 84 86 88 90 92 94 96 98 2 Compressor check Measure the resistance value of each winding by using the tester Input Terminal Blue o 2 Blue 4 2 Red 2 Black 3 DA130S1C 20FZ DA150S1C 20FZ DA250S2C 30MT TNB306FPGMC L Blue Red 0 950 20 C 0 950 20 0 550 20 0 530 20 3 IPM continuity c
13. Voltage protection PFC module protection Only for M4OC 36HRFN1 M Outdoor fan speed has been out of control Only for DC fan motor models No A Indoor unit coil outlet temp sensor or connector of sensor is defective No B Indoor unit coil outlet temp sensor or connector of sensor is defective No C Indoor unit coil outlet temp sensor or connector of sensor is defective No D Indoor unit coil outlet temp sensor or connector of sensor is defective Temperature protection of compressor top Only for M3OD 2 HRDN1 M High pressure protection Only for 1 Low pressure protection Only for M40C 36HRFN1 M Current protection of compressor Temperature protection of compressor discharge High temperature protection of condenser IPM module protection 34 IDU Error Wall ES 1 ES 1 E7 P2 PO IDU Error Others E6 E2 E6 PO P3 P1 ES For Older PRE 2014 Multi Split System Outdoor Units YN018GMFI16M2D YN027GMFI16M3D and YNO36GMFI16M4D Displa IDU IDU di a LED STATUS Error Error 9 Wall Others EO Outdoor EEPROM malfunction ES E6 E1 No A Indoor unit coil outlet temp sensor or connector of sensor is defective gt E2 No B Indoor unit coil outlet temp sensor or connector of sensor is defective C Indoor unit coil outlet temp sensor or connector of sensor is defective E E6 No D Indoor unit coil outlet temp sensor or connect
14. 9 4 3 9 P3 Current protection of compressor error diagnosis and solution If the compressor current exceeds the current limit value for 10 seconds the LED will display the failure Wiring mistake Over load protector faulty System block Outdoor faulty Trouble shooting Current protection of compressor Judge 1 Check whether the input current of the power supply wire is more than 12 5A 18K For Replace outdoor main board 27K it is 17 For 30K it is 18 5 For 36K it is 23A 7 Yes Y Check whether the refrigerant system is ok Judge 2 Check whether the outdoor ambient temperature is higher than 50 C Y Yes Stop the unit Judge 3 Check whether the outdoor unit is bad ventilation Yes Make the outdoor unit ventilate well Judge 4 Check whether the Y heat exchanger is dirty Clean the heat exchanger LT Y Let the refrigerant out then use the high pressure Yes nitrogen or refrigerant to blow pipe vacuumize and charge the refrigerant again Judge 5 The refrigerant pipe is blocked i Replace outdoor main board and check whether the Yes system can run normally No l Replace the electric control box Tuc Yes gt Trouble is solved p 93 94 9 4 3 10
15. Check whether the inductance of PFC module is good If the inductance is good the resistance of the two ports is 0 Yes Y No Yes gt the outdoor main board No Replace the inductance Replace the PFC module gt Trouble is solved 97 E A 3 4 4 77 2 ri o Z gt TUBE EE 6 co Om pise cl Two ports of the inductance b a amp j ed A d A 98 99 9 5 Trouble Criterion Of Main Parts Spec Nm ii Indoor fan motor RPG28H Ceiling Recesses DUCT RB018 Indoor fan motor YSK68 4B Cassette 018 Indoor fan motor WZDK37 38G Floor Ceiling 0 018 Indoor fan motor WZDK55 38GS W Floor COnsole Indoor fan motor 2014 AND Newer YNO36GMFI16M4D pd RN Outdoor fan motor YDK53 6FB B WZDK180 38G PRE 2014 Models YNO36GMFI16M4D Compre Sor DA130S1C 20FZ DA150S1C 20FZ TNB306FPGMC L SENT YDK70 6FB YDK53 6FB B YDK180 8GB 100 1 Temperature sensor checking Disconnect the temperature sensor from PCB measure the resistance value with a tester INING 000 Tester Temperature Sensors Room temp T1 sensor Indoor coil temp T2 sensor Outdoor coil temp T3 sensor Outdoor ambient temp T4 sensor Compressor discharge temp Tp sensor Measure the resistance value of each winding by using the multi
16. Replace bridge rectifiers and then check whether the system can run normally es Replace IPM board and then check whether the system can run normally Replace outdoor main board Trouble is solved 81 IPM for dual trio zone bridge rectifier IPM for quad zone 83 Remark Measure the DC voltage between and port The normal value should be 190V 250V 9 4 3 4 E7 Communication malfunction between IPM board and outdoor main board error diagnosis and PCB main chip does not receive feedback from IPM module during 60 seconds Wiring mistake PCB faulty Trouble shooting Communication malfunction between IPM board and outdoor main board Is there at least one LED in the IPM board light No v Check the signal wire between the IPM module and the main Yes board is it connected good Reconnect and retry 15 error still display No Replace IPM board and then check whether the system can run normally Yes No Replace outdoor main board and then check whether the system can run normally No Y Y Replace control Trouble is solved Yes gt 84 COFUCG ICUCLCUC 4 85 Remark Use a multimeter to test the DC voltage between black pin and white pin of signal wire The normal value
17. Fresh air intake allows improved indoor air quality and comfort Dimension 075mm 3 5 Air passage function Reserved external duct connection knockout plates are available for remote air outlets from the sides of indoor unit to connect air ducts at the sides to feed air to one or two nearby areas gt gt S 29 a N a e_ m Air duct hole 3 2 Ceiling amp Floor type 1 Two way Flex Mounting Installation gt The rounded design of the ceiling and floor type air conditioner allows either ceiling or floor level installation Ceiling installation saves room space while floor installation allows each reach w Compact Design Compact design that makes the unit suitable for any interior space o 3D Airflow gt Vertical air flow and horizontal airflow directions can be adjusted by remote controller Combining two airflow directions help spread the air comfortably throughout even large rooms With these functions the whole room can be evenly air conditioned for both floor level and ceiling installed applications Optional drainage pipe connection gt Both right side and left side drainage holes are available to avoid the space limitation for drainage pipe installation for added convenience w Convenient operation and easy maintenance gt Remote controllers included as standard wired controller optional gt The filter rack without screwed fix
18. please set the vertical air louver to its maximum angle vertically to the floor and set the fan to high speed 7 Electronic Function 7 1 Abbreviation T1 Indoor ambient temperature T2 Pipe temperature of indoor heat exchanger T3 Pipe temperature of outdoor heat exchanger T4 Outdoor ambient temperature Tp Discharge temperature Ts Setting temp 7 2 Main Protections 7 2 1 Three Minutes Delay at restart for compressor 7 2 2 Fan Speed is out of control For units using DC motor When Indoor Fan Speed stays too low or too high for certain time the unit will stop and the LED will display the failure code 7 2 3 Indoor fan delayed open function When the system starts up the louver will be active immediately and the indoor fan will start 10s later f the system runs in heating mode the indoor fan will be controlled by anti cold draft warm otart function 7 3 Operation Modes and Functions 7 3 1 Fan mode 1 The outdoor fan and compressor stop 2 Temperature setting function is disabled and no setting temperature is displayed 3 Indoor fan can be set to high med low auto 4 The louver operates as same as in cooling mode 5 Auto fan The action of auto fan in fan only mode is the same as auto fan in cooling mode with 24 C setting temperature Ti Ts High i Medium Y Low Ts 24C 7 3 2 Cooling Mode 7 3 2 1 Indoor fan running ru
19. sensor is correct refer to the Appendix 1 Yes Replace outdoor main board Yes Y Judge 1 Check whether the outdoor ambient temperature is higher than 50 C Yes Stop the unit Judge 2 Check whether the heat exchanger is dirty Yes Clean the heat exchanger No No y Judge 3 The refrigerant pipe is blocked Let the refrigerant out then use the high Yes pressure nitrogen or refrigerant to blow pipe vacuumize and charge the refrigerant again 96 9 4 3 12 P7 Inverter compressor drive protection error diagnosis and solution The same as P4 IPM module protection 9 4 3 13 PF PFC module protection error diagnosis and solution Only for PRE 2014 YN036GMFI16M4D QUAD ZONE off Trouble shooting When the voltage signal that PFC sends to main control board is abnormal the display LED will show and will turn Wiring mistake Outdoor PCB faulty Inductance of PFC module faulty module malfunction PFC module protection Check whether the connecting line between main board and the PFC module is connected tightly Yes Connect it tightly check normal or not lt Y Check whether the voltage range of P N on IPM module is normal DC277 356V for 18 27KBtu h DC277 410V for 36KBtu h No
20. 5 Release 2 screws to remove the pump supporter Be careful of the connection wires 6 There are 2 screws under the supporter to fixing the pump Release them to take the pump out of the supporter Remove 1 Remove the water Repeat the operation of No 8 collecting assembly 120 2 Remove the seal board evaporator of evaporator Remove the evaporator fixing board 4 screws Remove the evaporator fixing clamps to disassemble the evaporator 121 gt Ceiling amp Floor All the operations should be performed after powered off Parts Procedures name Remove 1 Open the air return the Filter grille Remove the filter from the grille Open the air return grille Remove Remove the air the return grille Repeat the operation of step1 of No 1 electronic Screw off the screw connected to the left and right control guide beam box Screw off the screws to take out the electronic control box from the body Remove the cover of electronic control box Disconnect the outer driver DC motor wire louver motor wire room temperature sensor T1 and evaporator coil temperature sensor T2 wire and display board wire to remove the electronic control Outer driver DC motor connector 122 4 Take out the Repeat the operation of step1 step2 and step3 of No2 the PCB electronic control box from the body and remove its
21. Check the signal wire between the IPM module and the main board is it connected good and retry Is error still display No 2 No Replace IPM board and then check whether the Yes gt system can run normally No Replace outdoor main board and then check whether the system can run normally Yes gt No Replace a control Trouble is solved 55 17 2 ZU I ICULCUC oe 56 Remark Use a multimeter to test the DC voltage between black pin and white pin of signal wire The normal value should be around 5V Use a multimeter to test the DC voltage between black pin and red pin of signal wire The normal value should be around 12V 9 4 2 4 4 open or short circuit of outdoor temperature sensor diagnosis and solution F1 F2 F3 F4 F5 open or short circuit of indoor coil temperature sensor diagnosis and solution If the sampling voltage is lower than 0 06V or higher than 4 94V the LED will display the failure Wiring mistake Sensor faulty PCB faulty Trouble shooting Check the connections N between temperature sensor and PCB Are No gt Correct the connections the connections good Yes Check the resistance value of the sensor via Appendix 1 and Appendix 2 Yes Replace indoor or outdoor PCB No
22. Do not install remove or reinstall the unit by yourself End User There is risk of fire electric shock explosion When flammable gas leaks turn off the gas and open a window for ventilation before turning the product on B If strange sounds or smoke comes from product turn the breaker off or disconnect the power supply cable There is risk of electric shock or fire B Stop operation and disconnect the power during storm or hurricane If possible further secure the product before the hurricane arrives There is risk of property damage failure of product or electric shock B Do not open the inlet grill of the product during operation Do not touch the electrostatic filter if the unit is so equipped There is risk of physical injury electric shock or product failure B If the indoor section gets wet contact an authorized service center There is risk of fire or electric shock Be cautious that water should not enter the product There is risk of fire electric shock or product damage B Ventilate the product from time to time when operating it together with a nearby stove etc There is risk of fire or electric shock B Turn the main power off when cleaning or maintaining the product There is risk of electric shock When the product will not be used for a long time disconnect the power supply by turning off the breaker There is risk of product damage or failure or unintended operation
23. N 5 3 Ceiling Concealed Ducted Recessed 200mm or more 300mm or more 4 den j 600mmX600mm checking orifice 5 4 Floor Console VE gt 100 HH gt A 2 ele H 2 ij Yj 2 s Z gt 1000mm YW Al m 7A u i Z r 4 Z 22 AN X NN AN IS N 6 Operation Characteristics Cooling Heating Drying operation operation operation Room temperature 262 F lt 88 F 262 F 32 F 122 F 5 F 122 F For the models with low 32 F 122 F temperature cooling system Outdoor temperature CAUTION 1 If air conditioner is used beyond the above conditions the certain protections may be triggered 2 Room relative humidity should be less than 80 If the air conditioner operates in excess of this value the surface of the air conditioner may attract condensation In this case
24. and cooling the compressor will stay stopped for 15 minutes and then select the mode according to T1 Ts If the setting temperature is modified the system will reselect running function 7 3 5 Dehumidifier mode 7 3 5 1 Indoor fan speed is set at breeze speed and cannot be changed The louver angle is the same as in the cooling mode 7 3 5 2 Low room temperature protection In dehumidifier mode if room temperature is lower than 10 C 50F the indoor fan will stop and not resume until room temperature exceeds 12 C 54 7 3 5 3 Evaporator freeze up protection is active 7 3 6 Forced operation function 7 3 6 1 Enter forced operation function Press the emergency start button continually the system will run as per the below sequence ress once First press P or Forced cooling em Press once When the system is off pressing the emergency button will bring the system into forced auto mode In this more pressing the button once more will bring the system into forced cooling mode In forced cooling mode pressing the button will turn off the machine 7 3 6 2 In forced operation mode all general protections and remote control are available 7 3 6 3 Operation rules Forced cooling mode The indoor fan runs as breeze After running for 30 minutes AC will switch to auto mode with 24 C 75F setting temperature 25 Forced auto mode The action of forced auto mode is the same as normal auto mod
25. bottom halves and removing the bottom halve allows taking out motor with centrifugal fan assembly easily Only requirement is the removal of two bolts to finish the job Blower Housing Ventilated Panel 5 Reserved remote on off and central control ports gt Reserved remote on off ports and central control ports allow connecting cables of an on off controller or a central controller to provide remote on off control function or group control function 11 Remote on off ports Central control ports 6 Built in drain pump Optional gt Built in drain pump can lift the water up to 750 mm 30 Inches This provides the conveniency to install drainage piping even under most difficult space limitations 750mm upmost 7 Built in display Thermostat gt The standard indoor unit is controlled by wired electronic controller gt There is also a display board with a receiver inside the E box This part can be located elsewhere up to 10m 30 Feet for remote controller access gt The wired controller and the display board can display the error codes or production codes when the chips detect any failure 12 Wired Controller Standard Remote Controller Optional 3 4 Console 1 Modern and elegant appearance gt The simple and stylish designs blend in your living space Q Two air outlets in Cooling mode Quick Cooling To maintain room temp gt Air outlet from top and bottom to make quick c
26. electric parts 12 Remove the g fixing board of me uae 2 electronic E cu x control box 4 EH gt aH LODA y d 13 Disconnect the DC motor wire 4 2 louver motor Aw wires ONES evaporator coil Lc Fares temperature EE sensor T2 E wire and two y grounding wire yellow green to remove the AL electronic i qr control box Remove 9 Take out the Repeat the operation of step1 step6 of No2 electronic control box from the body and remove its cover 10 Disconnect all the wires of plugs connected to the PCB 11 Remove two fixing screws to remove the PCB Remove Remove the the electronic display control box board Remove the fixing glue to remove the display board Remove Remove the the switch electronic board control box 2 Remove the fixing glue to remove the display board Repeat the operation of step1 step2 and step3 of No 2 7 Remove the air 3 Remove the front panel assembly and 134 assembly Remove the louver motor of air outlet assembly Remove the louver motor of the water collector the panel frame assembly Remove the 1 fixing screw to remove air outlet grille assembly Disconnect louver motor wire Remove the air outlet grille assembly Screw off the screws to remove the motor Remove the front panel assembly and th
27. essentielle esse 2 1 SafetvPrecqutioliuvass 2 A aes 2 2 Product SPECIFICATIONS Rens 5 Ss Features Seesen 6 As DIMEMSIONCOL uu Lm 15 DIMENSION tae 15 15 5 Service Space Units MIN uu suitable 21 6 Operation Characteristics s u 23 75 Electronice FUNCOM sensn n i s 23 EX eode m CT 23 7 2 Main PL teetion uu e c cT 23 7 Operation Modes FUNCION as enlatado ner tena ea ep 23 95 Ming Dl aS Pani acc uuu s m u antawa ap A aaa ayam 27 SN 30 OD NR ER Tm 30 Wall etae t y 30 92 Indoor Unit Error DISDIAY ss ee een 32 Pu Meo sS RI TEE EIE E 32 9 3 Qutdoor Unit Error Display near a Sq 34 9 4 Diagnosis and solu a
28. meter 101 Appendix 1 Temperature Sensor Resistance Value Table Kom Kom Komm kom 7 0 11826 2 90 23574 30 082m 9 us zi 1205 2229 0648 DT SME 23 e 2528 310 959 DM 25 ossos o toe 105 95292 e oee ize _ 7 N Es O gt N N O OD O N N DS em 3 7894 DS 32 72944 72 1538 04499 _ ers 35 m 04x DS 493181 34 14996 ma oa DS ess 5 sam 75 138m m 04864 352024 40 sq 03592 5495 406569 OS 25 03074 DS 49 3592 eo 0299 30 o 99 mo cam ar 8 sim 32 om 15 4 97 N O A _ N cO DM eon a 2588 94 319 O25425 DT ere s z8wn s mns 15 9252 DT Sm s 27598 9 DM Ms 5 ze sr om 35r om 18 13 9180 58 2 53973 0 66818 138 0 22776 e Us 5 255 95 mo 9276 39 2467 mo cO On C O 0 70944 0 23916 102 Appendix 2 2 fe es co Es gt A Unit Discharge temp sensor table NO N
29. pipe vacuumize and charge the refrigerant again Judge 5 The refrigerant pipe is blocked M X Replace outdoor main board and check whether the Yes system can run normally y Replace the electric control box Yes gt Trouble is solved p 74 75 9 4 2 12 P4 Temperature protection of compressor discharge error diagnosis and solution When the compressor discharge temperature Tp is more than 115 C for 10 seconds the compressor will stop and restart till Tp is less than 90 O Refrigerant leakage O Wiring mistake O The discharge temperature sensor faulty O Outdoor PCB faulty Trouble shooting Temperature protection of compressor discharge Check whether the compressor discharge temp is more than 115 C Check whether the refrigerant is leak Ye Yes Stop leaking and add refrigerant No y No gt Correct the wiring connection gt compressor discharge temp sensor and PCB according to wiring diagrams Check whether the wiring connection is right between Yes v Judge The discharge temp sensor is broken Method Check whether the resistance of compressor discharge temp sensor is right refer to the Appendix 2 No gt Replace the compressor discharge temp sensor Replace outdoor main
30. shock or damage to the plastic parts of the product B Do not touch the metal parts of the product when removing the air filter They are very sharp B Do step on or put anything on the product outdoor unit B Always insert the filter securely Clean the filter every two weeks or more often if necessary A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or damage B Do not insert hands or other objects through air inlet or outlet while the product Is operating B Do not drink the condensate water drained from the product B Use a firm stool or ladder when cleaning or maintaining the product Be careful and avoid personal injury B Replace the all batteries in the remote control with new ones of the same type Do not mix old and new batteries or different types of batteries There is risk of fire or explosion B Do not recharge or disassemble the batteries Do not dispose of batteries in a fire They may burn of explode B If the liquid from the batteries gets onto your skin or clothes wash it well with clean water Do not use the remote if the batteries have leaked 2 Product Specifications WALL MOUNT Models WBO09GMFI16MLD WB012GMFI16MLD WB018GMFI16MLD m s Indoor fan motor Winding Resistance 381 267 381 267 183 6 206 E Dos o os Speed Hi Med Lo r min 1150 950 800 1150 1000 850 1130 1040 940 m3 h 450 370 320 570 500 420 880 82
31. should be around 5V Use a multimeter to test the DC voltage between black pin and red pin of signal wire The normal value should be around 12V 9 4 3 5 PO Temperature protection of compressor discharge error diagnosis and solution When the compressor discharge temperature Tp is more than 115 C for 10 seconds the compressor will stop and restart till Tp is less than 90 O Refrigerant leakage O Wiring mistake O The discharge temperature sensor faulty O Outdoor PCB faulty Trouble shooting Temperature protection of compressor discharge Check whether the compressor discharge temp Ye is more than 115 C No Check whether the wiring connection is right between compressor discharge temp No 4 Correct the wiring connection sensor and PCB according to wiring diagrams Check whether the refrigerant is leak Yes Stop leaking and add refrigerant Yes v Judge The discharge temp sensor is broken Method Check whether the resistance of compressor discharge temp sensor is right refer to the Appendix 2 Replace the compressor discharge temp sensor Yes Y Replace outdoor main board Trouble is solved 86 9 4 3 6 PO Temperature protection of compressor top error diagnosis and solution Only for PRE 2014 YN018GMFI16M2D DUAL AND YN027GMFI16M3D TRIP
32. the sampling voltage is not 5V the LED will display the failure Wiring mistake Over load protector faulty System block Outdoor faulty Temperature protection of compressor top Whether the connection is good Whether compressor No Reconnect and retest operates Yes Yes Whether refrigerant circulation volume is normal Whether protector is normal If protector is normal resistance 0 No Replace the protector No v Charge refrigerant Yes Y Replace the outdoor main PCB Whether abnormality is the same after gas charging No Y Check refrigerant system such as clogging of capillary etc 9 4 1 8 Inverter compressor drive error diagnosis and solution The trouble shooting is same with one of IPM module protection P0 48 9 4 1 9 Full Water malfunction diagnosis and solution For Cassette Concealed Duct If the sampling voltage is not 5V the LED will display the failure Wiring mistake Water level switch faulty Water pump faulty Indoor faulty If the water level switch is inserted well Yes v If the water level switch is broken No Insert the water level switch well Yes Replace the water level switch No Y If the water pump is normal No Replace the water pump
33. 0 730 Indoor air flow Hi Med Lo 9 43 43 E 1 2 1 5 1 5 Indoor unit Packing W D H inch 30 31x10 43x12 52 34 45x10 43x13 19 39 96x11 61x14 49 Net Gross weight K 8 9 5 9 11 11 5 15 Net Gross weight Pound 17 64 20 94 19 84 24 25 25 35 33 07 Liquid side Gas side mm inch 6 35 9 52 1 4 3 8 6 35 12 7 1 4 1 2 06 35 012 7 1 4 1 2 Power supply 1 WZDK37T380 7 WZDK37 360 Uu 7 71 Indoor fan motor Indoor air flow Hi Med Lo No duct Indoor external static pressure Hi x Pa 24 J Jl 4 4 O Dimension W D H body Packing W D H body RR Mm 6 35 12 7 6 35 12 7 Liquid side Gas side 114 1112 4 4 1 2 Model WDK5536GSW WZDKSS3869W Indoor fan motor indoor air low HiMed La No duct indoor external static presse H Dimension W D A body Packing W D H body Packing W D H body num e Mm 6 35 12 7 6 35 12 7 q inch 1 4 1 2 1 4 1 2 Modl 1 1 5 7464 YSK6848 pag 12 2 4 Sn Indoor fan motor Indoor external static pressure Hi 2 Sen SH Hi door extemal state SE H s MI Hia i I mm a 7006635210 a Dimension ED body Packing W D H body L mm 275552202 213565520020 Packing W D H body Net Gross weight body Kg 205 f x 2095 22 5 27 5 Net Gross weight bod
34. 0 8 1500 8 374 30 8 1380 8 20 Blue C 20 20 20 5 4 way valve 1 Power on use a digital tester to measure the voltage when the unit operates in cooling it is When the unit operates in heating it is about 230VAC If the value of the voltage is not in the range the PCB must have problems and need to be replaced 2 Turn off the power use a digital tester measure the resistance The value should be 1 8 2 5 106 6 Disconnect the connectors 1 white N 2 Yellow E 3 Orange p 4 Blue 5 Brown 6 Red 107 Resistance to Color of lead wire Normal Value Red Blue Red Yellow About 500 Brown Orange Brown White 108 Red Blue Red Yellow 109 Brown Orange Brown White 110 9 Disassembly Instructions Wall Mount Units 1 Front panel How to remove the front Overview panel 1 Pull the below side of the panel and release the clips Remove the 2 filter and horizontal louver 2 Remove the fixing screw and open the One screw cover fixing the cover LL HHH 3 Liftthe panel w wa A release the connector of display ass y Then Ban tac Tor remove the front panel display ass y a B i w m i I yo i a DEVI 4 Remove the five screws and release the panel frame ass y 5 screws E
35. ATE FACTORY SETTING Sm OFF TO OUTDOOR UNIT LIT NOTE PLEASE USE PLEASE CUT OFF THE JUMPER J1 IF YOU RESINS Mo CONNECT THE NET MODULE NOTICE 4 c E NOTICE 3 202052290083 1 PLEASE CUT OFF THE JUMPER J2 IF YOU WANT rd ee RE E TO HAVE THE TERMAL FUNCTION 29 Troubleshooting 9 1 Display Board 9 1 1 Icon explanation on indoor display board WB Series Wall Mount Models O O O O auto timer defrost ion p AA Signal receptor AUTO indication lamp Lights up during the auto operation TIMER indication lamp Lights up during Timer operation DEFROST indication Lights up when the air conditioner starts defrosting lamp For cooling amp automatically or when the warm air control Warm Start heating models only feature is activate in heating operation lon indication Illuminate when lonizer Plasma function is activated DIGITAL DISPLAY Displays the current setting temperature and malfunction protection code when the air conditioner is in operation Frequency display This display is separated into five zones The zones illuminate based on the compressor current frequency For example higher frequency will illuminate more zones 9 1 2 Icon explanation on indoor display board CB Series Compact cassette Infrared signal receiver Temporary button Operation lamp Alarm indicator Timer indicator PRE DEF indicator co
36. B Floor Ceiling CB Ceiling Cassette Operation x X x x x X x O x 0 x x x De frost x x x x xXx O x x x Alarm X Mee IS e lt x x x x x Failure Open or short circuit of T1 temperature sensor Open or short circuit of T2 temperature sensor Indoor outdoor units communication error Full water malfunction Indoor EEPROM malfunction IPM module protection Open or short circuit of T3 or T4 temperature sensor or outdoor EEPROM malfunction Outdoor fan has been out of control Indoor fan speed has been out of control Voltage protection Temperature protection of compressor top Outdoor unit over current protection Inverter compressor drive protection Mode conflict flash at 2 5 sec light ON X extinguished Oflash at 0 5 sec Note Digital display is only available for duct type 33 Display EO E1 2 E4 ES E6 E7 F5 1 2 4 P5 9 3 Outdoor Unit Error Display For YN018GMFI16M2D YN027GMFI16M3D YNO30GNFI16M3D YNO36GMFI16M4D 2014 and Newer Display 2 E4 ES E6 E8 F1 F2 F3 F4 PO P1 P2 P3 P4 P5 P6 LED STATUS Outdoor EEPROM malfunction Indoor outdoor units communication error Communication malfunction between IPM board and outdoor main board Open or short circuit of outdoor temperature sensor T3 4 T2B
37. B Take care to ensure that nobody could step on or fall onto the outdoor unit This could result in personal injury and product damage CAUTION B Always check several times for refrigerant leakage after installation or repairing the product Low refrigerant levels may cause failure of product B Install the drain hose to ensure that water is drained away properly A bad connection may cause water leakage B Keep perfect level when installing the product To avoid vibration of water leakage B Do not install the product where the noise or hot air from the outdoor unit could disturb the neighbors It may cause disturbance for your neighbors B Use two or more people to lift and transport the product B Do not install the product where it will be exposed to sea wind salt spray directly It may cause corrosion on the product Corrosion particularly on the condenser and evaporator fins could cause product malfunction or inefficient operation Operational B Do not expose the skin directly to cool air for long time Do not sit in the path of the air draft B Do not use the product for special purposes such as preserving foods works of art etc It is a consumer air conditioner not a precision refrigeration system There is risk of damage or loss of property B Do not block the inlet or outlet of air flow B Use a soft cloth to clean Do not use harsh detergents solvents etc There is risk of fire electric
38. Check whether the connecting line of Find out the cause and have it every reactor is normal If the line is 2524 broken the resistance of the two ports is No ee models except for MAOC 36HRFNI1 M amp M40C 36HRDNI M Check whether the PFC module broken for MAOC 36HRFN1 M amp No Replace the main board check whether the system can work normally eplace the compressor check whether the system can work normally Yes Yes M 4 Trouble is solved D 46 Replace the connecting line or reactor or replace the PFC module for MAOC 36HRFN1 M 9 4 1 6 High voltage or Low voltage protection diagnosis and solution Voltage protection v Check the voltage of outdoor unit power supply whether the voltage between L L1 and N L2 is about 187 253VAC Yes v Check whether the voltage of IPM board P and N is v Check the power supply normal DC277 356V for 18 27KBtu h DC277 410V No v Replace bridge rectifiers and then check whether the system can run normally Only for qua zone No lt v Replace IPM board and Yes then check whether the system can run normally No v Y Replace outdoor main board 47 1 rouble is solved 9 4 1 7 Temperature protection of compressor top diagnosis and solution If
39. LE Zone If the sampling voltage is not 5V the LED will display the failure Wiring mistake Over load protector faulty System block Outdoor PCB faulty Trouble shooting Temperature protection of compressor top Whether the connection 15 good Whether compressor operates No Reconnect and retest T Yes Whether refrigerant circulation volume is normal Whether protector is normal If protector is normal resistance 0 No Replace the protector No v Charge refrigerant Yes v Replace the outdoor main PCB Whether abnormality is the same after gas charging Check refrigerant system such as clogging of capillary etc 87 k all 4 t Prov x A x r x errr mane eee ree b nana Re Xm anna Rs anne E ee sas gt lt K y tea 2 7 OUT gt A 1 17B DIGITAL MULTIMETER mw gt quer ra FLUKE 88 9 4 3 7 P1 High pressure protection error diagnosis and solution Only for PRE 2014 YNO36GMFI16M4D QUAD ZONE If the sampling voltage is not 5V the LED will display the failure Wiring mistake Over load protector faulty System block Outdoor faulty Trouble shoo
40. Outdoor faulty Trouble shooting Low pressure protection Judge 1 Whether the wiring between the low pressure protector and main control board is connected well or correctly No p Connect it well Yes Y Judge 2 Whether the low pressure protector is broken v Method Short connect the low pressure protector socket check whether the system can run normally or test the resistance No Y Check whether the refrigerant system is ok Judge 3 Check whether the outdoor ambient temperature is too low Yes Replace low pressure protector Yes Stop the unit No Y Judge 4 The refrigerant of the system is leakage Leak hunting Charge nitrogen or refrigerant Method Connect the pressure gauge to the gauge joint of the system check whether the pressure is lower than 0 14MPa Y Judge 5 The refrigerant pipe is blocked Y Replace outdoor main board to the system if the leakage is serious there will be distinct gas leakage cici sound if the leakage is slight use the suds mixture of water and abluent is also ok if it can make bubble or electronic leak detector Yes Let the refrigerant out then use the high Yes pressure nitrogen or refrigerant to blow pipe vacuumize and charge the refrigerant again 91 92
41. RANSFORMER CB012GMFI16MLD CBO18GMFI16MLD Ceiling Cassette Models 202042380121 NOTE The wiring diagram Tm 15 for explanation 5 PUMP fics purpose only The L Ei actual shape of the components may be different WIRING DIAGRAM INDOOR UNIT X XT1 DISPLAY BOARD i TEMPERATURE COMPENSATE CRN P C BOARD SOCKETS FAN INDOOR DC FAN MOTOR SWING ROTOR MOTOR ROOM TEMPERATURE PIPE TEMPERATURE CONNECTORS xsi xs5 connecTORS aT Factory setting ie I ALARN xmi awer TERMINAL EMA wa tt mE a SR GERIR el p XT 1 i PIPE RU The TYPE SELECTION TEMPERATURE COMPENSATE AND TO OUTDOOR UNIT ANTI GOLD AIR HAS BEEN SET BEFORE LEAVING THE FACTORY ANYONE MODIFY EXGEPT THE PERSON 27 UB012GMFI16MLD UB018GMFI16MLD FloorOCeiling Flex Mount Models WIRING DIAGRAM INDOOR UNIT Inner Driver 202052290087 DC Motor POWER SETTING CN18 ee eo 66 m MES an we Pa ii ETC ee DC MOTOR INDOOR UNIT cnz1 PUUEPI 5 KI E DOTE 5 PE m m o 5 os N EN I FOR TEMP COMPENSATION CN24 Hoi IM H T owe quies Tr p EEE I CN13 N we l CN14 T ME I L
42. ROM malfunction Open circuit or short circuit of T1 or T2 temperature sensor IPM module protection or IGBT over strong current protection Voltage protection Temperature protection of compressor top Outdoor temperature is lower than 15 C optional function Inverter compressor drive protection Mode conflict If the outdoor temperature lt 15 for 1 hour then the machine stops running the indoor display shows the error code P3 The unit can still receive remote control signals If the outdoor gt 12 for 10 minutes the compressor stops running more than one hour Or the outdoor temperature gt 5 C for 10 minutes then AC will recover to the last mode and fan speed EA Reserved function 32 FB Series Floor Console Operation f x f XK x Timer X t o x x De frost X x x O x x x Failure Open or short circuit of T1 temperature sensor Open or short circuit of T2 temperature sensor Indoor outdoor units communication error Indoor EEPROM malfunction Outdoor fan speed has been out of control IPM module protection Open or short circuit of T3 or T4 temperature sensor or Outdoor unit EEPROM parameter error Temperature protection of compressor top Inverter compressor drive protection Mode conflict Indoor fan speed has been out of control flash at 5 sec light ON X extinguished Oflash at 0 5 sec For RB Concealed Duct U
43. Replace outdoor main board Yes Clean the heat exchanger 70 71 9 4 2 10 P2 Low pressure protection error diagnosis and solution Only for 2014 and NEWER YNO36GMFI16M4D QUAD ZONE If the sampling voltage is not 5V the LED will display the failure O Wiring mistake O Over load protector faulty O System block O Outdoor PCB faulty Trouble shooting Low pressure protection Judge 1 Whether the wiring between the low pressure protector and main control board is connected well or correctly No p Connect it well Yes Y Judge 2 Whether the low pressure protector is broken v Method Short connect the low pressure protector socket check whether the system can run normally or test the resistance No Y Check whether the refrigerant system is ok Judge 3 Check whether the outdoor ambient temperature is too low Yes Replace low pressure protector Yes Stop the unit No Y Judge 4 The refrigerant of the system is leakage Leak hunting Charge nitrogen or refrigerant Method Connect the pressure gauge to the gauge joint of the system check whether the pressure is lower than 0 14MPa Y Judge 5 The refrigerant pipe is blocked Y Replace outdoor main board to the system if the leakage
44. V for 36KBtu h heck whether the input power supply is correct 208 230V 1 60Hz Yes whether the connecting line between main board and the IPM module is connected tightly Connect it tightly check ok or not Check whether the power supply line is connected correctly and tightly egulate it to correct then check whether the system can work normally Connect it correctly and tightly check ok or not Yes eck whether the connecti line of the compressor is onnected correctly or tightly Yes Replace the IPM module check whether the system can work normally ok or not Connect it well check Check whether the line in E part box are connected tightly Connect it tightly check ok or not Check whether the bridge rectifiers are normal Use the multimeter to measure the resistance between each two terminals check whether there is the condition that value of resistance is O For AC fan models please refer No to 9 5 Trouble Criterion Of Main Parts check whether the resistance of the fan motor is Yes Yes heck if the outdoor fari runs properly or the outdoor Yes NONNA LNO Replace the bridge rectifiers motor For DC fan models refer to amp the solution of fan speed has been out of control malfunction
45. WB CB RB UB FB SERIES INDOOR UNITS FOR MULTI SPLIT SYSTEM AIR CONDITIONER AND HEAT PUMP SERVICE MANUAL Multi Zone Parker Davis HVAC International Inc 2260 NW 102nd Place Doral FL 33172 Ph 305 513 4488 info pd hvac com Model Numbers WB009GMFI16MLD WB012GMFI16MLD WB012GMFI16MLD CB012GMFI16MLD CB018GMFI16MLD RB012GLFI16MLD RBO13GMFI16MLD UBO12GMFI16MLD UBO13GMFI16MLD FBO12GMFI16MLD Table of Contents Precaution Product Specifications Product Description And Label Dimension of indoor unit Display Function Operation Characteristics Electronic function Wiring Diagrams And Electrical Trouble Shooting se 00 N OX GL YS Disassembly instructions 10 Exploded view WARNING E nA Installation MUST conform with local building codes or in the absence of local codes with the National Electric NFPA70 ANSI C1 1993 or current edition and Canadian Electrical Code Part1 CSA C 22 1 The information contained in the manual is intended for use by a qualified service technician familiar with safety procedures and equipped with the proper tools test instruments Installation or repairs made by unqualified persons can result hazards to you and others Failure to carefully read and follow all instructions this manual can result in equipment malfunction property damage personal injury and or death Inte rtek CONTENTS I
46. al except console No Celer Signa Voltage 1 Red 192v 380V 3 Bak GND 4 White Ve 135165 For console NO Color Signal Voltage _ Rd Vc pow 3 Wwe Ve Ew Yeew Ve or e en ov 43 9 4 1 4 Open or short circuit of temperature sensor diagnosis and solution If the sampling voltage is lower than 0 06V or higher than 4 94V the LED will display the failure Wiring mistake Sensor faulty PCB faulty Trouble shooting Check the connections between temperature No sensor and PCB Are Correct the connections Y the connections good x Yes Check the resistance value of the sensor via Appendix 1 and Appendix 2 Yes Replace indoor or outdoor PCB No Y Replace the sensor 178 TAL METER VN N L P ed 44 9 4 1 5 IPM module or IGBT over strong current protection diagnosis and solution When the voltage signal that IPM send to compressor drive chip is abnormal the display LED will show 6 and will turn off Wiring mistake IPM malfunction Outdoor fan ass y faulty Compressor malfunction Outdoor PCB faulty 45 Trouble shooting IPM module protection Check whether the voltage range of P N on IPM module is normal DC277 356V for 18 27KBtu h DC277 410
47. board gt Trouble is solved 4 76 9 4 2 13 P5 High temperature protection of condenser error diagnosis and solution When outdoor pipe temperature is more than 65 C the unit will stop and unit runs again when outdoor pipe temperature is less than 52 C The condenser temperature sensor faulty Heat exchanger dirty System block Trouble shooting High temperature protection of condenser Replace the temperature sensor Check whether the condenser temperature is more than 65 C heck whether the resistance of condenser temp sensor is correct refer to tne Appendix 1 Yes Replace outdoor main board Judge 1 Check whether the outdoor ambient temperature is higher than 50C Yes p gt Stop the unit Judge 2 Check whether the heat exchanger is dirty Yes Clean the heat exchanger v Let the refrigerant out then use the high Yes pressure nitrogen or refrigerant to blow pipe vacuumize and charge the refrigerant again Judge 3 The refrigerant pipe is blocked ff 9 4 2 14 P6 IPM module protection error diagnosis and solution When the voltage signal that IPM send to compressor drive chip is abnormal the display LED will show 6 and will turn off ErrorCode 00 O Wiring mistake O IPM malfunctio
48. c control box Disassemble the fan motor fixing clamps to remove the fan motor af assembly and fan wheel j removed aller assembly f took off the 2screws used to fix the fan motor holder 129 8 Disassemble the fan wheels then you can remove the fan motor Remove the water collector 4 Screw off the screws to remove the water collector assembly assembly 3 screws collector assembly Remove 5 Remove the water Repeat the operation of No 6 the collector evaporator 6 Remove the evaporator g J EST sensor Evaporator sensor 7 Remove the pipe clamp board 2 screws 130 8 Remove the evaporator support board 9 Screw off the fixing screws to remove the evaporator 131 gt Floor Console All the operations should be performed after powered off Parts Procedures name Remove 6 Slide the two the Filter stoppers on the left and right sides to open the front panel Remove the filter Remove 8 Remove the air 9 Open the front panel the front panel Repeat the operation of step1 of No 1 electronic control box e Remove the string e Allowing the front panel to fall forward will enable you to remove it 9 Remove the Repeat the operation of step 2 of No 1 filter 132 10 Remove four fixing screws s to remove the 4 screws panel frame assembly 11 Remove the d installation plate of L wr r Ya E
49. cover Disconnect all the wires of plugs connected to the PCB Remove the PCB from the fixing pins Remove Remove the air the PCB of return grille outer driver DC Screw off the motor screws to take out Each corner has a fixing pin the electronic control box from the body 3 Disconnect all the wires of plugs connected to the PCB Screw off the screws to remove the PCB Remove Take out the Repeat the operation of step1 and step2 of No4 the fan electronic control motor box from the body 123 Remove the fan motor wire from the PCB of outer driver DC motor Remove the stickers stick to the volute shell Remove the below volute shell 10 Disassemble the fan motor fixing clamps to remove TE 1 67 and fan wheel assembly the fan motor can be removed after took assembly and fan ai off the 2screws used to fix wheel assembly is fan motor fixing clamps The fan motor assembly 11 Disassemble the fan wheels then you can remove the fan motor Take off the screw to remove the fan wheel Remove 3 Remove the air Repeat the operation of step1 of No 2 the front return grille panel 4 Remove the left and right cover by screwing off the screw and moving them according to the arrow direction assembly 5 Remove the top cover by screwing of the fixing screws 124 outlet grille assembly Remove the display board Remove the horiz
50. e panel frame assembly Remove the cover of louver motor Screw off the screws to remove the motor Remove the front panel assembly and the panel Repeat the operation of No 7 to remove the air outlet grille assembly Repeat the operation of step1 step2 and step3 of No 2 Repeat the operation of step1 step2 and step3 of No 2 135 frame assembly 6 Disconnect louver motor wire Louver motor connector 7 Remove 4 fixing screws to disassemble the water collector Remove 6 Remove the Repeat the operation of No 2 to remove the electronic control the electronic box R o he air Repeat the operation of No 7 to rem the air outlet grill epeat the operation of 7 to remove the air outlet grille assembly emove the ai 9 outlet grille assembly assembly Remove the evaporator sensor and release the pipe strap 136 9 Remove the evaporator assembly Remove Remove the Repeat the operation of No 2 to remove the electronic control the electronic box centrifugal control box Remove the air Repeat the operation of 7 to remove the air outlet grille assembly outlet grille assembly Remove four fixing screws to remove the ventilation assembly Remove the hex nut fixing the fan to remove the fan Remove 12 Remove the Repeat the operation of No 12 to remove the centrifugal fan the fan centrifugal fan motor 13 Remove the fan motor after unfastening three fixi
51. e with 24 C 75F setting temperature 7 3 6 4 When there s an indoor unit running in forced cooling it becomes the master forced cooling unit Other indoor units will run at forced cooling mode as well and they will become the slave forced cooling units The slave forced cooling units cannot quit forced cooling mode until the master forced cooling unit quits and switch to cooling mode with low fan speed and with 24 C 75F setting temperature For other models 7 3 6 5 The slave forced cooling units will not be controlled by other signals except timer off signal 7 3 6 6 If AC is running in sleep mode and receives forced operation signal it will quit the sleep mode 7 3 7 Timer function 7 3 7 1 Timing range is 24 hours 7 3 7 2 Timer The machine will turn on automatically when reaching the set ON time 7 3 7 3 Timer off The machine will turn off automatically when reaching the set OFF time 7 3 7 4 Timer on off The machine will turn on automatically when reaching the set on time and then turn off automatically when reaching the set off time 7 3 7 5 Timer off on The machine will turn off automatically when reaching the set off time and then turn on automatically when reaching the setting on time 7 3 7 6 The timer function will not change the system s currently set operation mode 7 3 7 7 The setting time is relative time 7 3 8 Sleep function mode 7 3 8 1 The
52. easure the voltage of pin1 pin3 pin4 pin3 in fan motor connector If the value of the voltage is not in the range showing in below table the PCB must have problems and need to be replaced m ANN BS SY ll 66 DC motor voltage input output 1 Vs Vm 140 380V M2OC 18HFN1 M amp M40C 36HRFN1 M 192 380V M3OC 30HRFN1 M E ____ 6 Bw FG E 67 9 4 2 8 PO protection of compressor top error diagnosis and solution Only for PRE 2014 YN027GMFI16M3D Triple Split Model If the sampling voltage is not 5V the LED will display the failure Wiring mistake Over load protector faulty System block Outdoor PCB faulty Trouble shooting Temperature protection of compressor top Whether the connection 15 good Whether compressor operates No Reconnect and retest T Yes Whether refrigerant circulation volume is normal Whether protector is normal If protector is normal resistance 0 No Replace the protector No v Charge refrigerant Yes v Replace the outdoor main PCB Whether abnormality is the same after gas charging Check refrigerant system such as clogging of capilla
53. elow photos 9 4 1 2 Indoor outdoor unit communication error diagnosis and solution Indoor unit does not receive the feedback from outdoor unit for 120 seconds Wiring mistake Indoor or outdoor PCB faulty 36 Trouble shooting Indoor outdoor units communication error Start Power off then Power on the A C by the Breaker reconnect the power wire Is it still displaying the error code heck wiring on the outdoor and indoo terminal follow the wiring diagram Is all connecting correctly No Reconnect the wiring No g Ft Reconnect the wiring Yes Measure Vs is it moving alternately between positive value and negative value Vs is the voltage between S and L2 Refer PIC 1 Is all the wiring between terminal and Indoor PCB connect ok Turn on all indoor unit by remote controller Is all indoor unit display Yes Yes Y Change the Indoor PCB 4 5 4 5 urn off the all indoor units Is IP power LED or operating LED lamp On Refer PIC2 gt Power by remote controller Ils it still displaying the error code after 3 minutes Yes Is the reactor connecting well Is main board HH lamp on Refer 3 No Reconnect the wiring
54. he location of EEPROM chip please refer to the below photos Outdoor PCB DUAL Zone 79 9 4 3 2 4 open or short circuit of outdoor temperature sensor diagnosis and solution E1 E2 E3 E6 open or short circuit of indoor coil temperature sensor diagnosis and solution If the sampling voltage is lower than 0 06V or higher than 4 94V the LED will display the failure Wiring mistake O Sensor faulty PCB faulty Trouble shooting Check the connections between temperature sensor and PCB Are the connections good gt Correct the connections Yes Check the resistance value of the sensor via Appendix 1 and Appendix 2 Yes Replace indoor or outdoor PCB No Replace the sensor 9 4 3 3 Voltage protection error diagnosis and solution An abnormal voltage rise or drop is detected by checking the specified voltage detection circuit Power supply problems System leakage or block PCB faulty Trouble shooting Voltage protection Y Check the voltage of outdoor unit power supply whether the voltage between L L1 and N L2 is about 187 253VAC No Y Check the power supply Bc dd Yes Check whether the voltage of IPM board P and N is normal DC277 356V for 18 27KBtu h DC277 410V for 36KBtu h No v
55. heck Turn off the power let the large capacity electrolytic capacitors discharge completely and dismount the IPM Use a digital tester measure the resistance between UVWN UVW andN Normal Digital tester resistance value Several Several 4 Fan Motor Measure the resistance value of each winding by using the tester Normal resistance value Digital tester Red Input Terminal gt Red 1 5 Black 2 gt I gt White White 3 V V V k Black ES Black Red 3810 8 20 C 3420 8 20 C 183 60 8 20 C 1800 8 20 C Brand Weiling Brand Dayang Brand Weiling Brand Wolong White Black 267 8 20 C 2530 8 20 C 2060 8 20 C 1900 8 20 C Brand Weiling Brand Dayang Brand Weiling Brand Wolong Measure the resistance value of each winding by using the tester Input Terminal Black C Blue 4 Brave lt Yellow 3 Red _ Blue Q RR Black Red Brown Yellow 105 Resistance Value YDK70 6FB VUE YSK27 4G YSK68 4B YDK45 6B YSK25 6L 8GB 6FB B ee 24 50 8 3170 8 1450 8 3450 8 6270 8 88 50 8 5 20 20 20 20 20 20 Red 760 8 190 8 20 2520 8 880 8 1500 8 374 30 8 1380 8 20 Yellow 20 C 20 20 20 20 Yellow 190 8 20 252
56. iE PE a DE PEU So 36 9 5 Trouble Criterion OF Main Par na ue ups 100 10 DisassemBbly IHStrFuUctIons au in futi 111 or injury B Be cautious when unpacking and installing the product Sharp edges could cause injury be especially careful of the case edges and the fins on the 1 1 Precaution 1 1 Safety Precaution condenser and evaporator To prevent injury to the user or other B For installation always contact the people and property damage the following dealer or an authorized service center instructions must be observed carefully Do not install the product on weak or B Incorrect operation due to ignoring defective structures or stands instructions will cause harm or damage B Be sure the installation area does not B Before servicing the unit be sure to deteriorate with age read this service manual entirely If the base collapses the air conditioner could fall with it causing property damage product failure and personal injury 1 2 Warning Do not let the air conditioner run for a Installation long time when the humidity is very high B Do not use a defective or underrated circuit breaker Use this appliance on a dedicated circuit There is risk of fire or electric shock B For electrical work contact the dealer seller a qualified electrician or an autho
57. ing allowing filters to be removed and serviced easily 6 Easy installation saves time gt The pipes can be connected from bottom back and right side making the installation easy gt The wiring work can be finished before the installation 3 3 A5 Duct 1 Installation accessories Optional Front Discharge Duct Connector Canvas Air Passage Filter Panel for easy installation Duct Connector Canvas Air Passage Filter Access Panel 2 Easy Installation Two air inlet styles Bottom side or Rear Return Field Convertible Air inlet from rear is standard for all capacity air inlet from bottom is available by simple conversion gt size of air inlet frame from rear and bottom is same it s very easy to move the cover from bottom to rear side or from rear to the bottom in order to match the installation requirements emy um Air intake from rear Standard Air intake from bottom Field Converted 10 3 Fresh air intake function For utmost comfort a fresh air intake duct connection is available 4 Easy maintenance gt Easy to clean the filter Filter is optional standard product is shipped without filter It is easy to slide out the filter from the indoor unit for cleaning whether the filter is installed on the rear or the bottom side gt Easy replacement access for the motor or centrifugal fans Ventilated panel can be removed easily Blower housing s are made in top and
58. is serious there will be distinct gas leakage cici sound if the leakage is slight use the suds mixture of water and abluent is also ok if it can make bubble or electronic leak detector Yes Let the refrigerant out then use the high Yes pressure nitrogen or refrigerant to blow pipe vacuumize and charge the refrigerant again 72 73 9 4 2 11 P3 Current protection of compressor error diagnosis and solution If the compressor current exceeds the current limit value for 10 seconds the LED will display the failure Wiring mistake Over load protector faulty System block Outdoor faulty Trouble shooting Current protection of compressor Judge 1 Check whether the input current of the power supply wire is more than 12 5A 18K For No Replace outdoor main board 27K it is 17 For it is 18 5 For 36K it is 23A Yes Y Check whether the refrigerant system is ok Judge 2 Check whether the outdoor ambient temperature is higher than 50 C Yes Stop the unit Tr Judge 3 Check whether the outdoor unit is bad ventilation Judge 4 Check whether the heat exchanger is dirty Yes Make the outdoor unit ventilate well Yes Clean the heat exchanger Let the refrigerant out then use the high pressure Yes nitrogen or refrigerant blow
59. isconnect the fan Plug of room motor wire fan capacity 4 HB l temperate sensor wire room temperature 79 evaporator sensor wire N temperature sensor evaporator temperature sensor wire Fan motor wire Fan capacity wire 5 Screw off the screws to f remove electronic os control box Remove the display board 6 Disconnect the display board wire connected to PCB 7 Remove the sticker 127 3 Move the display board according to the arrow direction to disassemble it Remove b Remove the cover of Repeat the operation of step1 of No1 the PCB uM control box 1 Pull out all the plugs or connectors connected to the PCB and remove the ground wire after remove the SCreW Remove the PCB from the electronic control box Press the four fixing holders from four corners to remove the PCB PCB the fan electronic control box capacity wire 9 Screw off the screw to 2 it 128 Remover Screw off the fixing the fan screws to remove the motor rear cover board Screw off the fixing screws to remove the rear beam Remove room p JE Cut off the fastening temperature sensor belt to take off the foom temperature W sensor Remove the sticker Remove the below volute shell Press the clips to take off the volute shell Remove the fan motor Refer the operation of step2 of No 1 wire from the electroni
60. lectrical How to remove the Grounding Coil temp screws sensor parts electrical parts 1 After remove the front panel from procedure 1 pull out the room temp sensor and evaporator coil sensor Remove the grounding Room temp Sensor SCrews Screw for cover 2 Remove the fixing screw and open the cover of electronic control box 3 Pull out the connectors of swing motor fan motor room temp sensor and coil temp sensor Fan motor connector Swing motor connector Temp sensor connectors 4 Remove the fixing screw and then remove the electronic control box and air outlet ass i M J lalu WN N n One screw 112 3 Evaporator How to remove the evaporator 1 After remove the front panel ass y and electrical parts following procedure 1 and procedure 2 remove the pipe holder at the rear side of the unit 2 Remove the three screws on the evaporator at the base bearing side 3 Remove two screws on the evaporator at the fixed plates and then lift the evaporator ass 113 Screw of pipe holder 3 screws 4 How to remove the fan motor and motor 1 After remove the evaporator ass y Four screws following procedure 1 procedure 2 and procedure 3 remove the four screws fixing the cover 2 Remove the screw fixing the motor and the
61. les In cooling mode indoor fan runs all the time and the speed can be selected as high medium low and auto Auto fan in cooling mode acts as follows Kere 3 5 High _ 3 0 Medium Y Low 7 3 2 4 Evaporator low temperature T2 protection When T2 lt 4 C for 3 minutes the indoor has no capacity demand Resume at 2 gt 7 7 3 3 Heating Mode 7 3 3 1 Indoor fan running rules Indoor fan speed can be set as high medium low and auto fan and the anti cold draft Warm Start function has preference Auto fan action in heating mode T1 Ts 4 Low 2 5 b 2 Medium 1 5 q Se High 24 7 3 3 2 High evaporator coil temp T2 protection If 2 gt 63 while the indoor unit has no capacity 7 3 3 3 Prevent Over Heating In heating mode when the indoor unit has no capacity requirement when the indoor room temperature setting is satisfied the Indoor fan will run in Lowest Available Speed Anti cold draft Warm Start function has the priority 7 3 4 Auto mode This mode can be chosen by remote controller and the setting temperature can be changed between 17 30 64F 86F In auto mode the system will choose cooling heating or fan only mode according to AT AT T1 Ts ATO 1 lt ATEN Indoor fan will run at auto fan of the relevant mode The louver operates same as in relevant mode If the system switches its mode between heating
62. ls check whether there is the condition that value of resistance is 0 No Please refer to 9 5 Trouble Yes Ves heck if the outdoor fan Criterion Of Main Parts check runs properly or the outdoor Yes whether the resistance of the Replace the bridge rectifiers nit ventilation is good fan motor is normal If not replace the fan motor Check whether the connecting line of every reactor is normal If the line is broken the resistance of the two ports is No co models except for M40C 36HRDN1 MD Check whether the PFC module broken for M40C 36HRDN1 M o Replace the main board check whether the system can work normally Yes Replace the connecting line or reactor or replace the PFC module forM4OC 36HRDN1 M Replace the compressor check whether the system can work Yes normally Trouble is solved 95 9 4 3 11 P6 High temperature protection of condenser error diagnosis and solution When outdoor pipe temperature is more than 65 C the unit will stop and unit runs again when outdoor pipe temperature is less than 52 C The condenser temperature sensor faulty Heat exchanger dirty System block Trouble shooting High temperature protection of condenser Replace the temperature sensor Check whether the condenser temperature is more than 65 C resistance of condenser temp
63. ly or the outdoor Yes gt Replace the bridge rectifiers SANDER motor For other models refer ta nit ventilation is good the solution of fan speed has Check whether the connecting line of been out of control NE If i h every reactor is normal If the line is Ping a Cale broken the resistance of the two ports is and have it solved co models except for 36 1 MD Check whether the module broken for M40C 36HREN1 M Replace the main board check whether the system can work normally Replace the connecting line or reactor or replace the PFC module for MAOC 36HRFN1 M Replace the compressor check whether the system can work normally Yes Y q Trouble is solved 78 9 4 3 Outdoor unit trouble shooting For PRE 2014 Models YN018GMFI16M2D YN027GMFI16M3D and YNO36GMFI16M4D 9 4 3 1 Outdoor EEPROM malfunction error diagnosis and solution PCB main chip does not receive feedback from EEPROM chip Installation mistake PCB faulty Trouble shooting Outdoor EEPROM malfunction Yes If the EEPROM chip is welded on PCB replace the PCB directly Otherwise check whether the EEPROM chip plugged in PCB well No Insert the EEPROM well Replace the outdoor main board EEPROM a read only memory whose contents can be erased and reprogrammed using a pulsed voltage For t
64. main board ELE lamp on Refer PIC 3 No Reconnect the wiring Y Yes es Change Outdoor Main s indoor units number correct Che on the outdoor check point 2 for dual zone 3 for tri zone 4 for qua zone Refer PIC 4 Trouble is solved No b second ime Change outdoor unit PCB assembly include wiring totally 52 Pic 10 a multimeter to test the DC voltage between L2 port and S port of outdoor unit The red pin of multimeter connects with L2 port while the black pin is for S port When is running normally the voltage will move alternately between positive value and negative value Pic 2 IPM For dual trio zone 53 Pic 2 IPM For quad zone wi 4 l m 1 L 201257102031 981 FRIOS 90002101 Main board LED when power on and unit standby PIC 4 Check point button press 1 time for check how many indoor units are connected 54 9 4 2 3 E3 Communication malfunction between IPM board and outdoor main board error diagnosis and PCB main chip does not receive feedback from IPM module for 60 seconds Wiring mistake PCB faulty Trouble shooting Communication malfunction between IPM board and outdoor main board Is there at least one LED the IPM board light No v
65. minutes after the power returns If the memorization condition is forced cooling mode the unit will run in cooling mode for 30 minutes and turn to auto mode with 24 C 75F setting temp 7 3 10 Drain pump control For Duct amp Cassette units A water level switch controls the action of the drain pump Main action under different condition every 5 seconds the system will check the water level 1 When the A C operates in cooling including auto cooling dehumidifying and forced cooling modes the pump will start running immediately and continuously till cooling stops 2 In case the water level increases beyond the controlled point LED will flash an alarm and the drain pump will start while continuously checking the water level If the water level comes down and LED alarm condition is removed drain pump has a 1 minute OFF delay than it will operate based on the last mode Otherwise the entire system stop operating including the pump and LED remain with the alarm after 3 minutes 8 Wiring Diagrams WBOO9GMFI16MLD WB012GMFI16MLD WBO18GMFI16MLD Wall Mount Models INDOOR WIRING DIAGRAM M un 202052090323 LES 3010 lt gt m rri pe Pe mm c c lt gt B SWITCH BOARD RY EE OPTIONAL 3 ES S o Hi ges Pe Mi O Pl A OPTIONAL d 11125 SM x R Ra PLASA TO OUTDOOR UNIT dE gt y mm T
66. n O Outdoor fan ass y faulty O Compressor malfunction O Outdoor PCB faulty Trouble shooting IPM module protection Check whether the voltage range of P N on IPM module is normal heck whather the input Regulate it to correct the i k DET 356 tor 18 rum oe DC277 410V for 36KBtu h ad Yes heck whether the connecting line between main board and IPM module is connected iightly Connect it tightly check ok or not Check whether the power supply line is connected correctly and iightly Connect it correctly and tightly check ok or not Yes Yes eck whether the connecting line of the compressor is onnected correctly or tightly Connect it well check ok or not Check whether the line in E part box are connected tightly Connect it tightly check ok or not Yes Replace the IPM module check whether the system can work normally Check whether the bridge rectifiars are normal Use the multimeter to measure the resistance between each twa terminals check whether there is the condition that value of resistance is 0 For M3OD 27HRDN1 M please No refer to 9 5 Trouble Criterion Of Main Parts check whether the resistance of the fan motor is ES Yes heck if the outdoor fan normal If not replace the fan runs proper
67. n pull out the motor 1 Screw 114 gt Eight Way cassette type compact All the operations should be performed after powered off Parts Procedures Remove 1 Open the grille the filter 2 Remove the filter Note the filter is easy to be damaged be careful when removing it Remove the panel p Remove the grille Screw off two screws Disconnect the display board wire and swing motor wire connected to the PCB Remove the grille an Lu WA Loose the four screws and two wireropes then the panel be disassembled 115 Remove 1 Open the grille Repeat the operation of step1 of No 1 2 Remove the grille Repeat the operation of step2 of No 2 oar 3 Disassemble the display board e Remove the display board cover 4 screws Remove the display board 4 screws 1 Open the grille Repeat the operation of step1 of No 1 No need the PCB to remove the panel 2 Disassemble the electronic control box cover Remove the 1 fixing screw and 3 grounding wires and be careful of the lockers of both sides and the bottom 116 3 There are 3 buckles fixing the PCB To draw out the you should open them 4 Pull out all the connection wires to other parts then the PCB can be replaced Pump Power Input Indoor fan Temp sensors Display board Water level Remove 1 Open the grille Repeat the operation of step1 of No 1 No
68. need the to take down the panel electronic control box 3 Pull out all the plugs or connectors connected to the electronic control box 117 4 Remove the ventilation ring Release the 4 screws to disassemble it Be careful of the indoor temperature sensor 5 Remove the electronic control box Remove the 2 screws to disassemble the electronic control box o A N J t A 2 screws Z A a Remover the fan wheel 2 Remove the fixing nut to disassemble the fan wheel 118 3 Pull out the fan wheel Remove the fan motor 2 Remove the fixing board of fan motor wire 3 Remove the 4 screws to disassemble the fan motor 4 screws 4 Pull out the connection plugs of the motor wires Remove 1 Remove the panel Repeat the operation of No 2 the water 2 Remove the electronic Repeat the operation of No 5 collecting control box assembly 3 Screw off the 4 screws inside 4 holes 1 is under a protection cover to remove the water collecting assembly 119 4 Take out the water collecting assembly Remove 1 Remove the panel Repeat the operation of No 2 the drani 2 Remove the electronic Repeat the operation of No 5 g control sex pump 3 Remove water Repeat the operation of No 8 collecting 4 Disconnect the drain pipe
69. ng screws 137 gt Exploded Views Available under a separate document file 138
70. nosis and solution Only for PRE 2014 YNO36GMFI16M4D QUAD Zone When the voltage signal that PFC sends to main control board is abnormal the display LED will show 6 will turn off Wiring mistake Outdoor PCB faulty Inductance of PFC module faulty e PFC module malfunction Trouble shooting PFC module protection Check whether the connecting line between main board and the PFC module is connected tightly Connect it tightly check normal or not v Check whether the voltage range of P N on IPM module is normal DC277 pe Replace the outdoor main board Yes 356V for 18 27KBtu h DC277 410V for 36KBtu h No Check whether the inductance of PFC module is good If the inductance is good the resistance of the two ports is 0 No Replace the inductance Yes v Replace the PFC module Trouble is solved 2 62 EI du 0 EM w rs _ Two ports of the inductance x p LE ees 63 64 9 4 2 7 E8 Outdoor fan speed has been out of control diagnosis and solution Only for DC fan motor models When outdoor fan speed stays too low 300RPM or too high 2400RPM for certain time the unit will stop and the LED will display the failure Wiring mistake O Fan ass y faulty Fan motor faulty PCB faulty Trouble shooting Shut off the power supply and turn it on 1 minu
71. oling and heating type or fan only indicator cooling only type 30 9 1 3 Icon explanation on indoor display board Series Ceiling amp floor OPERATION ED O Operation lamp TIMER CD O Timer indicator DEEJ FAN PRE DEF Indicator cooling and heating type or fan only indicator cooling only type ALARM O Alarm indicator MANUAL iib O Temporary button Infrared signal receiver 9 1 4 Icon explanation on indoor display board RB Series Ceiling Recessed Ducted PRE DEF indicator cooling and heating type or fan only indicator cooling only type Timer indicator Alarm indicator Operation lamp Infrared signal receiver Temporary button Display digital tube Re A e MANUAL OPERATION TIMER DEF FAN ALARM E a x P x 9 1 5 Icon explanation on indoor display board FB Series Console Infrared signal receiver Operation lamp Timer indicator PRE DEF indicator cooling and heating type or fan only indicator cooling only type Temporary button 31 9 2Indoor Unit Error Display WB Series Wall Mount Units Display EO E1 E2 5 E6 PO 1 2 P3 P4 P5 Note Failure Indoor EEPROM malfunction Indoor outdoor units communication error Zero crossing signal error Indoor fan speed has been out of control Open circuit or short circuit of outdoor temperature sensor or outdoor EEP
72. ontal louver motor Remove the vertical louver motor 6 Remove the front panel assembly by screwing of the fixing screws 2 Remove the air outlet grille assembly by screwing of the screws and taking out the clips 1 Remove the air outlet grille assembly 2 Screw off the fixing screws to remove the display board 2 Screw off the screws to remove the motor Remove the air outlet grille assembly Screw off the screws to remove the motor Repeat the operation of No 7 to remove the air outlet grille assembly Repeat the operation of No 7 to remove the air outlet grille assembly 1 Remove the front Repeat the operation of No 6 to remove the front panel the water panel assembly assembly collector 2 Screw off the fixing 4 screws to disassemble the water collector Remove the evaporator 2 Remove the fixing assembly foam of evaporator It s has no fixing part to fasten the foam just pull to remove it 3 Remove the evaporator sensor Evaporator sensor Remove the fixing boards of evaporator Remove the fixing screws to disassemble the evaporator assembly Each side has one screw 126 gt Ceiling Concealed Ducted All the operations should be performed after powered off Parts name Procedures Remove 3 Screw off the screws to the remove the cover of electronic electronic control box control box 4 D
73. ooling When the system is newly switched on or room temperature remains high cold air will be blown out from top and bottom air outlets to cool down the room quickly gt Air outlet from top to maintain room temp When the room has been cooled down or the A C has been working over 1 hour cold air discharged only from the top outlet will help maintain constant room temp 13 Heating mode When the system if first turned on temperature of indoor heat gt Anti cold air draft Warm Start exchanger is very low Therefore in order to prevent cold air draft directly blowing onto the people nearby only the upper louver is opened in a high position the lower louver will remain closed 3 Four air inlets B w Low noise gt DOC indoor fan motor with five speeds Low noise and great energy savings gt Advanced centrifugal fan technology for high airflow and reduced noise to a level as low as 28dB Golden fin is optional 6 Active carbon filter is standard 14 4 Dimension of indoor unit 4 1 Wall Mounted Systems
74. or of sensor is defective x 4 Open or short circuit of outdoor temperature sensor T4 5 5 Voltage protection P1 PO Ef Communication malfunction between IPM board and outdoor main board Temperature protection of compressor discharge Temperature protection of P2 P3 P1 compressor top only for M2OC 18HRDN1 M amp M3OC 27HRDN1 M P1 High pressure protection Only for M4OC 36HRDN1 M P2 Low pressure protection Only forM40C 36HRDN1 M s lt P3 Current protection of compressor s o P4 IPM module protection P0 5 6 High temperature protection of condenser m ES P7 Inverter compressor drive protection P4 P4 PF module protection Only for M40C 36HRDN1 M 35 9 4 Diagnosis and Solution 9 4 1 Indoor unit trouble shooting 9 4 1 1 Indoor EEPROM malfunction diagnosis and solution e PCB main chip does not receive feedback from EEPROM chip O Installation mistake O PCB faulty Trouble shooting Shut off the power supply and turn it on 1 minute later Is it still displaying the error code Yes If the EEPROM chip is welded on PCB replace the PCB directly Otherwise Insert the EEPROM well check whether the EEPROM chip plugged in PCB well Yes v Replace the indoor PCB EEPROM a read only memory whose contents can be erased and reprogrammed using a pulsed voltage For the location of EEPROM chip please refer to the b
75. rized service center Do not disassemble or repair the product and a door or a window is left open B Take care to ensure that power cable could not be pulled out or damaged during operation There is risk of fire or electric shock B Do not place anything on the power cable There is risk of fire or electric shock B Do not plug or unplug the power supply during operation There is risk of fire or electric shock B Do not touch the product with wet hands during operation B Do not place a heater or other there is risk of fire or electric shock B Always ground the product There is risk of fire or electric shock B Install the panel and the cover of control box securely There is risk of fire of electric shock B Always install a dedicated circuit and properly rated breaker Improper wiring or installation may cause appliance near the power cable There is risk of fire and electric shock B Do allow water to run into electrical parts It may cause fire failure of the product or electric shock B Use the correctly rated breaker or fuse There is risk of fire or electric shock B Do not modify or extend the power electric shock B Do not store or use flammable gas or combustibles near the product There is risk of fire or failure of product B Do not use the product in a tightly closed space for a long time Oxygen deficiency could occur cable There is risk of fire or electric shock B
76. ry etc 68 er ND mm 4 1 17B DIGITAL MULTIMETER 69 9 4 2 9 P1 High pressure protection error diagnosis and solution Only for PRE 2014 YNO36GMFI16M4D Quad Split If the sampling voltage is not 5V the LED will display the failure Wiring mistake Over load protector faulty System block Outdoor faulty Trouble shooting High pressure protection Judge 1 Whether the wiring between the high pressure switch and main control No Connect it well board is connected well or correctly Yes Y Judge 2 Whether the high pressure protector is broken Method Short connect the high pressure protector socket check whether the system can Yes Replace high pressure protector run normally or test the resistance No Y Check whether the refrigerant system is ok Judge 3 Check whether the outdoor ambient temperature is higher than 43 C No Y Yes Stop the unit Judge 4 Check whether the outdoor unit is bad Yes y Make the outdoor unit ventilate well ventilation No Y Judge 5 Check whether the heat exchanger is dirty Let the refrigerant out then use the Judge 6 Check whether the Y high pressure nitrogen or refrigerant to Lad Yes U refrigerant pipe is blocked blow pipe vacuumize and charge the refrigerant again
77. sleep function is available in cooling heating or auto modes 7 3 8 2 Operation process in sleep mode is as follows In Cooling Mode the setting temperature rises by 1 C ZF steps while lower than 30 86F once every one hour 2 hours later the setting temperature stops rising and the indoor fan is runs at auto speed In Heating Mode the setting temperature decreases by 1 C 2F while higher than 17 63F once every one hour 2 hours later the setting temperature stops rising and indoor fan is runs at auto speed Anti cold draft Warm Start function has the priority 7 3 8 3 Operation time in sleep mode is 7 hours After 7 hours the systems turns off 7 3 8 4 Shutdown or changing the mode or speed setting will cancel the economic operation 7 3 8 5 When user uses timer off function in sleep mode or sleep function in timer off mode if the timing was less than 7 hours sleep function will be cancelled when reaching the setting time If the timing was more than 7 hours the system will 26 not stop until reaching the setting time in sleep mode 7 3 9 Auto Restart function The indoor unit is equipped with auto restart function which is carried out through an auto restart module memory In case of a sudden power failure the module memorizes the setting conditions before the power failure The unit will resume the previous operation settings Excluding Swing function automatically within 3
78. te later Is it still displaying the error code No The unit operates normally Yes Find out the cause and have it solved For example check Shut off the power supply rotate the fan by hand No Does it rotate properly kD We tals blocked or the bearing is broken Yes Y Check the wires of fan motor Are all the No Correct the connections connections good Yes If the Check whether the fan malfunction is i Replace the fan i so motor is normal through No still existing index 1 replace the 1 Yes Y Replace the Check whether the main PCB is man FE No gt The normal through index 22 2 malfunction is Solved Yes 65 Index 1 1 DC fan motor control chip is inside motor Measure the resistance value of each winding by using the tester If any resistance value is zero the fan motor must have problems and need to be replaced Ea 72 Fg NN 5 FINAS N SR Li NS CO gt o Li gt Color NO CA 2 544 1 6 Index2 1 DC fan motor control chip is inside fan motor Power on and when the unit is in standby m
79. ting High pressure protection Judge 1 Whether the wiring between the high pressure switch and main control No Connect it well board is connected well or correctly Yes Y Judge 2 Whether the high pressure protector is broken Method Short connect the high pressure protector socket check whether the system can Yes Replace high pressure protector run normally or test the resistance No Y Check whether the refrigerant system is ok Judge 3 Check whether the outdoor ambient temperature is higher than 43 C No Y Yes Stop the unit Judge 4 Check whether the outdoor unit is bad Yes y Make the outdoor unit ventilate well ventilation No Y Judge 5 Check whether the heat exchanger is dirty Let the refrigerant out then use the Judge 6 Check whether the Y high pressure nitrogen or refrigerant to Lad Yes U refrigerant pipe is blocked blow pipe vacuumize and charge the refrigerant again Replace outdoor main board Yes Clean the heat exchanger 89 90 9 4 3 8 P2 Low pressure protection error diagnosis and solution Only for 2014 YNO36GMFI16M4D QUAD ZONE If the sampling voltage is not 5V the LED will display the failure Wiring mistake Over load protector faulty System block
80. utdoor PCB YN030GMFI16M3D 51 9 4 2 2 E2 Indoor outdoor unit communication error error diagnosis and solution Indoor unit does not receive the feedback from outdoor unit for 120 seconds or outdoor unit does not receive the feedback from any one indoor unit for 180 seconds Wiring mistake Indoor or outdoor PCB faulty Trouble shooting Indoor outdoor units communication error Start Power off then Power on the by the Breaker reconnect the power wire Is it still displaying the error code Yes heck wiring on the outdoor and indoo terminal follow the wiring diagram Is all connecting correctly No gt Reconnect the wiring No Reconnect the wiring Yes Measure Vs is it moving alternately between positive value and negative value Vs is the voltage between 5 and L2 Refer PIC 1 15 all the wiring between No terminal and Indoor PCB connect ok Turn on all indoor unit by remote controller Is all indoor unit display Yes Y Change the Indoor PCB Yes lt Yes lt a5 urn off the all indoor units Is IP power LED or operating LED lamp On 2 No change IPM Power on by remcte controller 115 it still displaying the error code after 3 minutes Is the reactor connecting well Is
81. w Black 41 For other models Color NO UNE 6 Index2 1 Indoor AC fan motor Power on and set the unit running in fan mode at high fan speed After running for 15 seconds measure the voltage of pin1 and pin2 If the value of the voltage is less than 100V 208 240V power supply or 50V 115V power supply the PCB must have problems and need to be replaced Input Terminal 4559 N N p N Red 1 lt Black 2 S gt White White 3 o L VVVN o Black J 2 Indoor DC fan motor control chip is inside fan motor Power on and when the unit is in standby measure the voltage of pin1 pin3 pin4 pin3 in fan motor connector If the value of the voltage is not in the range showing in below table the PCB must have problems and need to be replaced 42 For other models NN N id I E LI Ci LI LI 123456 For console N X O 14 SS Heu ES PEMEX DAN N 1 N N DC motor voltage input and output For light commerci
82. y 44 09 55 12 50 71 63 93 Liquid Liquid sider Gas side Mm 6 35 12 7 6 35 12 7 Umiisde Gas side inch 1 4 1 2 1 4 1 2 Floor Console Model RD280208A Oy o A indoor fan motor Indoor air flow Hi Med Lo No duct Indoor external static pressure Hi external static KESE ndor enteral sate presse Hp P g Dimension W D H body maramma m Dimension W D H body Packing W D H body mm 810010808 Packing W D H body demum _ 5 8 m j 33 07 44 09 Mm 6 35 12 7 Liquid side Gas side 1 4 1 2 3 Features 3 1 New Eight Way Cassette Type Compact 1 New panel gt 360 surround 8 Way Discharge air outlet design provides a comfortable and even air distribution 2 Compact design gt The body size is 570x260x570mm 22 5 x 22 5 x 10 25H Inches which just smaller than the standard ceiling tile grid size for very easy installation to blend in any decoration The panel size is 647x50x647mm 25 5 x 25 5 x 2H Inches gt attachment hooks are located at the four corners of the body which saves installation space 3 Electric control box built in gt Electronic controller system box is built inside the indoor unit It s location is very convenient for installation and maintenance To access the controller user only needs to open the air return grille E Box Inside 4 Fresh air intake function gt

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