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OUTDOOR UNITS Service Manual - PRE 2014

1. dle poe o ME ee RC NE EE 3 0 33246 1 2 3 4 5 T 21 8094 3 58962 280071 0 87950 0 28482 0 20 7184 3 45097 780 0 85248 0 27770 1 19 6891 3 31847 0 82643 0 27078 2 18 7177 3 19183 0 80132 0 26408 17 8005 3 07075 0 77709 0 25757 16 9341 2 95896 0 75373 0 25125 36 2909 59794 ozme _ Ce ero 25593 927 39 9 2467 39 02m 1 1 1 1 Appendix 2 Unit C K Discharge temp sensor table w o o C2 N N s s 8359 m 249 cx co e s e 4 _ 9 amp amp m wo ws 9 4 95 a sa 9 s 3 s m 9 zm 5 e 9 3 _ nae wm as co NO ee AJOIN O1 CO CO N co Appendix 3 C 10 11 12 13 14 15 16 17 18 19 20 21 22 48 50 52 54 56 58 60 62 64 66 68 70 72 E C 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 4 Red 2 Black 3 DA13081C 20FZ DA15081C 20FZ DA250S2C 30MT TNB306FPGMC L Blue Red 0 950 20 0 950
2. 5 Dimensions OF the Outdoor PEU 6 Refrigerdnt CY CIE a Ud 7 instalation Detalls A me 8 6 I Wrench torque sheet TOP A T N eor EU IUS 8 6 2 ConpnecHupg EMC Cables aries 8 6 9 Pipe lenetri and the 8 6 4 Installation for 8 6 5 Adding the refrigerant after running the system for many 10 6 6 Re installation while the indoor unit needs to be 4 11 6 7 Re installation while the outdoor unit needs to be 12 ElectroOnIC FUNCION mm ERR 13 F AAD DEVIATION ee 13 7 2 Electric control worklng nvlIrODtmiel sues 13 T Man POLO CUO tcu 13 TA CONMEROMANG FUNCTIONS aden 15 Wine tcc 19
3. Check whether the connecting line between main board and the PFC module is connected tightly No When the voltage signal that PFC sends to main control board is abnormal the display LED will show PF and AC will turn Wiring mistake Outdoor PCB faulty Inductance of PFC module faulty PFC module malfunction Connect it tightly check normal or not Check whether the voltage range of P N on IPM module is normal DC277 Yes Replace the outdoor main board 356V for 18 27KBtu h DC277 410V for 36KBtu h No Check inductance of PFC module whether the No Heplace the inductance good the resistance of the two ports is 0 is good If the inductance is Yes Y Replace the PFC module v Trouble is solved Weit 2 A cy ae Two ports of the inductance fw n LKS X mat 3 23 9 4 2 14 The cooling operation or heating operation does not operate 4 way valve faulty Check of 4 way please refer to part 5 in 9 5 Trouble Criterion Of Main Parts 9 4 2 15 When cooling heat exchanger of non operating indoor unit freezes When heating non operating indoor unit get warm EXV faulty Wire and tubing connected in reverse Check of EXV please refer to part 6 in 9 5 Trouble Criterion Of Main Parts 9 5 Troub
4. 26 SNC DA rr 26 8 2 INGOOF LUNIG EIrOr DISD AY SD 27 9 3 Outdoor UNIT DISDIAY 29 9T Didenosis and an 32 9 5 Trouble Criterion OF Main Parts E 72 Disassemblv InstruetlofiS cesso ids eos 81 gt Model NOTSGMEITOM2ZD caina ae aes eo 81 gt Model YNO276MFITOWNI3D ums M psi gu bs ther 90 gt Model YN036GMF116MAD 98 10 EXMOIO GEG cw OO Product Specifications YN018GMFI16M2D YN027GMFI16M3D YNO36GMFI16M4D 230V 60Hz 1Ph 230V 60Hz 1Ph 230V 60Hz 1Ph DA15081C 20FZ TNB306FPGMC L m E Power supply Ph V Hz MINIMUM CIRCUIT AMPACITY MAX FUSE Starting current Model 13051 20 2 Twin rotary Brand GMCC Capacity Input 4 97 N Compressor Rated current RLA Locked rotor Amp LRA 1NT01L 4639 or KSD301 Thermal protector Thermal protector position eo Capacitor Refrigerant oil oil charge ESTER OIL VG74 500 ESTER OIL VG74 500 FV50S 1070 24 5 19 88 5 138 800 600 7501 1615 850 2500 2500 29W 845x320x700 990x345x965 990
5. Tp Compressor discharge temperature VOLT_LTM_FREQ1_ADD VOLT RST2 ADD 7 2 Electric control working environment VOLT LTM2 ADD x 7 2 1 Input voltage 230V 22 VOLT LTM FREQ2 ADD 7 2 2 Input power frequency 60Hz Note if the low voltage protection is triggered and 7 2 3 Indoor fan normal working amp is less than not corrected within 3min it will keep the 1A protection even after restarting the machine 7 2 4 Outdoor fan Normal working amp is less 7 3 6 Compressor current limit protection than 1 5A If the compressor current exceeds the current 7 2 5 Four way valve normal working amp is less limit value for 10 seconds the compressor than 1A frequency will be limited as per the below table 7 3 Main Protection Cooling mode 7 3 1 Three Minute Time Delay at restart of the Curent Currentlimit Frequency limit compressor frequency Hz value A eee COOL_F16 ICOOLLMT12 Decrease the frequency to 1min delay for the 1 time start up and 3 COOL_F4 and run at COOL_F4 COOL_F15 ICOOLLMT11 for 3 minutes minutes delay for subsequent starts COOL 14 ICOOLLMT10 After that the frequency will be 7 3 2 Temperature protection of compressor adjusted according to the capacity demand and rise to the upper discharge Oe is level every minutes When the frequency COOL F4 COOL F12 ICOOLLMT8 via Capacity demand When the compressor discharge temp rises the running frequency will be l
6. Teen 6 35 14 6 35 14 12 7 1 2 12 7 1 2 6 2 Connecting the cables Outdoor unit union diameter mm inch 6 35 1 4 Indoor unit A B C D 9 52 3 8 The power cord connection should be selected according to the following specifications sheet 6 4 Installation for the first time Unt Air and moisture in the refrigerant system will Dual zone 18K outdoor unit create undesirable effects as listed below Tri zone 27K 30K outdoor unit Quad zone 36K outdoor unit Pressure in the system rises Operating current rises Cooling or heating efficiency drops Moisture in the refrigerant circuit may freeze and block capillary tubing Moisture may lead to corrosion of parts in the 6 3 Pipe length and the elevation refrigerant system compressor failure Therefore the indoor units and the pipes between indoor and outdoor units must be leak For indoor unit and outdoor unit connection wire 16AWG is used for all connections Maximum piping length and height difference tested and fully evacuated to remove the air and Max length for all zones 30 100ft 45 150ft 60 200ft moisture from the system Max length for each zone 20 65ft 25 80ft 30 100ft Max height Leak Check Soap and Water Method difference Max height difference Ew NUM detergent on the indoor unit connections and outdoor unit connections by a soft brush to check for leakage of the connecting point
7. gt lt screws E LJ p y t gt s 44 ey tu y P dido 05 b 4 Disconnect following IPM Board connection wires and connectors on the PFC C and CN12 yellow yellow connected to PFC inductance R and CN12 blue red connected to rectifier and red blue connected to P1 and P3 on PCB CN7 4p red connected to CN33 on PCB 8 2p white connected to CN202 on IPM Remove the PFC board after remove the two screws 6 Disconnect four wires red blue from black red from PCB then the rectifier can be removed PFC Board Disconnect following connection wires and connectors between PCB and other components P4 blue connected to N on IPM P2 red connected to P on IPM P1 red connected to on PFC P3 blue connected to on PFC RY 1 red connected to rectifier CN32 black connected to rectifier CN22 5p white connected to CN1 on IPM CN33 4p red connected to CN7 on PFC CN11 CN12 yellow yellow RY1 CN32 connected to fan capacity CN24 CN27 CN29 CN31 CN10 CN1 CN6 CNG CNS 9 blue blue connected to 4 way valve CN7 CN10 black red connected to crankcase heating cable CN13 T2B A B C D temp sensor 2p 2p 2p 2p white CN21 Tdischarge temp sensor 2p white CN18 T3 T4 T3 T4 temp sensor
8. 1502 CN31 CN12 YELLOW LONG _ CN2 CN11 HEATER sl CNT P1 Pe em cse BLACK RED FAN CAPACITOR OPTIONAL 4 WAYS VALVE RED P Li L2 Li l2 S BADE eo POWER SUPPLY Y G S 8 2 Wiring diagram of TRIPLE Circuit Outdoor Unit YNO27GMFI16M3D 202057190114 ELECTRONIC ELECTRONIC ELECTRONIC EXPANSIVE EXPANSIVE EXPANSIVE VALVE A VALVE B VALVE C COMPRESSOR YELLOW 2 1 KD 1 8 6 i2 TO NEAN L1 WP VL en de 5 5 B Back 2 w ee 8 0 TEE A ea popu L1 Ia E 3 a 5 is em 8 CN12 O m TTT n RED gt RECT IFILER2 RY Ni olgikexeels d RECTIFILERI P FOTO 1112 uw sol zum PDPPP 9 e O 111211175 CN32 YELLOW lt SUPPLY Y G Li L2 5 TO A RED R1325 RED OPTIONAL R2503 HEATER PCB board of YNO18GMFI16M2D and YN027GMFI16M3D LEU Room A LEU Room B LEU Room C LEV Room D 12UDC pulse wave 12UDE C 4 8 8 F RIUI 2 FA m e N i g BUS C S a E CompTop T B OOO o i d ICI 202302130493 CE KFRBO H ZBPZ2T4 310
9. 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 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 a eS lt urn off the all indoor units Is IP power LED or operating LED lamp On Refer PIC2 No change IPM Power on by remote controller IIs it still displaying the error code after 3 minutes Yes Is the reactor connecting well Is main board ELE lamp on Refer PIC 3 Reconnect the wiring Yes Yes v Change Outdoor Main PCB 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 first time No second ttme gt _ A Change outdoor unit PCB assembly include wiring totally 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 AC is running normally the voltage will move alternately between positive value and negative value
10. 305 Indoor fan PO Anti cold control 2 54 52 20 46 42 40 Outdoor fan EXV open 480P 480P for 240s Condition of ending defrost mode If any one of following items is satisfied defrosting will stop and the system will switch to normal heating mode According to the final capacity request to confirm the operating frequency as per the D gt TempQuitDefrost ADD C following table 2 The defrosting time reaches 10min Frequency Hz HEAT HEAT HEAT HEAT F4 F2 F145 F16 3 Turning any other modes on or off Amendatory capacity demand Heating capacity improvement in low ambient heating In heating mode when T2 T2 ExitTALowFre ADD and T4 4 there s frequency elevation elevated frequency Recent frequency 110 7 4 3 Outdoor fan control 7 4 3 1 Cooling mode For YNO27GMFI16M3D 141 25 Low When low ambient cooling is valid T4 4 High 27 2 25 20 i Y low ambient cooling Y For YNO18GMFI16M2D YNO30GMFI16M3D and YNO36GMFI16M4D DC_FAN_HI_SPD_ADD DC FAN MID SPD ADD DC FAN MIN SPD ADD DC FAN SLOW SPD ADD DC FAN SSLOW SPD ADD Outdoor fan speed control logic low ambient cooling When 4 15 and lt 30 C the unit will enter into low ambient cooling mode The outdoor fan will choose its speed according to T3 When T3238 or when T4220 the out
11. After 10s of the compressor start if the current IHEAT the AC will display the failure for 30 seconds and stop The AC will restart 3 minutes later 7 3 7 Indoor outdoor unit communication protection If the indoor units cannot receive the feedback signal from the outdoor unit for 2 minutes the system will stop and display the failure 7 3 8 High condenser coil temp protection When T3265 for seconds the compressor will stop while the indoor fan and outdoor fan will continue running When 3 lt 52 the protection will reset and the compressor will restart after 3 minutes 7 3 9 Outdoor unit anti freezing protection When 2 lt 0 C for 250 seconds the indoor unit capacity demand will be set as zero and reset to normal when T2B 10 7 3 10 Oil return Running rules 1 If the compressor frequency stays lower than RET OIL FREQ1 ADD for RET OIL TIME1 ADD the system will rise the running frequency to RET OIL FREQ2 ADD for RET OIL TIME2 ADD and then resume back to former frequency 2 During the oil return process the EXV will stay at 300p setting while the indoor units will keep the current running mode 7 3 11 Compressor preheating functions Preheating permitting condition If T4 outdoor ambient temperature 3 C when newly powered on or if T4 3C and compressor had stopped for over 3 hours the compressor heating cable will be activated Preheating mode A weak current fl
12. Pic 2 IPM for dual trilquad zone Power some modles A Operating PIC3 Main board LED when power and unit standby PIC 4 Check point button press 18 times for check how many indoor units are connected 9 4 1 3 zero crossing signal error diagnosis and solution When PCB does not receive zero crossing signal feedback for 4 minutes or the zero crossing signal time interval is abnormal Connection mistake faulty Trouble shooting Check if the connections and No Correct the connections Turn the power supply is normal unit when the power supply is good Yes v Indoor main PCB is defective Replace indoor main PCB 9 4 1 4 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 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 No gt The unit operates normally Find out the cause and have it solved For example check whether the fan is blocked or the bearing is broken Shut off the power supply rotate the fan by hand No Does it rotate properly Y
13. This modification will be carried out every 2 minutes 7 4 4 2 Heating mode The initial open angle of EXV is 250P adjustment range is 100 350p When the unit starts to work for 3minutes the outdoor will receive indoor units of capacity demand T2 information and calculate the average of them After comparing each indoor s T2 with the average the outdoor gives the following modification commands If the T2 2 the relevant valve needs 16p more close If averaget 22the T22 average 2 the relevant valve s open range remains If the T2 average 2 the relevant valve needs 16p more open This modification will be carried out every 2 minutes 7 4 5 Four way valve control In heating mode four way valve is activated In defrosting four way valve operates in according to defrosting action In other modes four way valve is deactivated When the heating mode to other modes the four way valve goes off after compressor is off for 2 minutes Failure or protection not including discharge temperature protection high and low pressure protection four way valve immediately turns off 7 Wiring Diagrams Wiring diagram of DUAL Circuit Outdoor Unit YNO18GMFI16M2D 202057090103 ELECTRONIC ELECTRONIC EXPANSIVE EXPANSIVE VALVE A VALVE B COMPRESSOR DISCHARGE SENSOR CN22 MAIN BOARD INDOOR PIPE OUT TEMP AB A B RECTIFILER2 RECTIF ILERI n CAPACITOR RED RED
14. Y Charge refrigerant Yes Y Replace the outdoor main PCB Whether abnormality is the same after gas charging No v Check refrigerant system such as clogging of capillary etc 9 4 1 9 Inverter compressor drive error diagnosis and solution The trouble shooting is same with one of IPM module protection PO 9 4 1 10 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 PCB faulty If the water level switch is inserted well Yes Y If the water level switch is broken gt 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 Check PCB board or replace the indoor main PCB 9 4 1 11 Mode conflict Cooling mode Heating Mode Cooling mode The indoor units cannot work cooling mode and heating at same time Heating mode has a priority When Indoor unit A is working in cooling mode or fan mode and 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 is working in heating mode and indoor unit B is set to cooling mode or fan mode th
15. 5Psi Disconnect the charging set and tighten the 2 way and 3 way valve s stem caps Use a torque wrench to tighten the 3 way valve s service port cap to a torque of 18N m Be sure to check for gas leakage 2 Air purging by the refrigerant Procedure 1 Confirm that both the 2 way and 3 way valve cores are set to fully closed position 2 Connect the charging set and a charging cylinder to the service port of the 3 way valve Leave the valve on the charging cylinder closed 3 Air purging Open the valve on the charging cylinder and valve of the charging set Purge the air by loosening the flare nut on the 2 way valve approximately 45 for seconds then closing it for 1 minute repeat this for 3 more times After purging the air use a torque wrench to tighten the flare nut on the 2 way valve 4 Check for any gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close the valve on the charging cylinder and discharge the refrigerant by loosening the flare nut on the 2 way valve approximately 45 until the gauge indicates 0 3Mpa 45Psi to 0 5 Mpa 70Psi 6 Disconnect the charging set and the charging cylinder and set the 2 way and 3 way valve cores to the fully open position Be sure to use a proper size hexagonal Allen wrench to operate the valve stems 7 Mount the valve stem caps and the service port cap Be sure to use a torque wrench to tighten the s
16. Whether abnormality is the same after gas charging Check refrigerant system such as clogging of capillary etc T sqannnne neers 4 nas nee ner eee mass mmmmnm LN 4 me mm 7 4 S uu uy gt 9 Q a c FLUKE 9 4 2 7 P1 High pressure protection error diagnosis and solution Only for YNO36GMFI16M4D 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 High pressure protection Judge 1 Whether the wiring between the high pressure switch and main control 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 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 Make the outdoor unit ventilate well ventilation Y Judge 5 Check wh
17. compressor operation the LED display the running frequency e n defrosting mode The LED displays dF or alternative displays between running frequency and dF each displays 2s e n compressor pre heating The LED displays e n protection or malfunction the LED displays error code or protection code 9 3 3 Outdoor unit error display IDU Displa Error D LED STATUS Error digital tube Wall Others Mount EO Outdoor EEPROM malfunction ES E6 E1 No A Indoor unit coil outlet temp sensor or connector of sensor is defective rum Ice E2 No B Indoor unit coil outlet temp sensor or connector of sensor is defective 22 3 E3 No C Indoor unit coil outlet temp sensor or connector of sensor is defective E6 No D Indoor unit coil outlet temp sensor or connector of sensor is defective ee RE E4 Open or short circuit of outdoor temperature sensor T4 ES E6 E5 Voltage protection P1 PO Communication malfunction between IPM board and outdoor main board CE E PO 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 M40C 36HRDN1 M EM RS P2 Low pressure protection Only forM40C 36HRDN1 M pics P3 Current protection of compressor zx 2 P4 IPM module protection ES P6 High temperature protection of condenser Lu PE P7 Inverter compressor drive protection P4 P4 PE PFC module prot
18. pumping 30 minutes keep the pump on for 20 minutes more If the pressure reading can not be obtained as low as 0 1Mpa 14 5Psi after pumping for 50 minutes please check if there is any leakage points After vacuuming fully close the low side valve of the charging manifold set and than turn off the vacuum pump Confirm that the pressure gauge needle does not move within approximately 15 minutes after turning off the vacuum pump Turn on the core of the 3 way valve using a properly sized Allen Wrench about 45 counterclockwise for 6 or seconds and observe the sound of the refrigerant coming out Than re tighten the valve core Make sure the pressure indicated on the low side pressure gauge is a little higher than the atmospheric pressure Then remove the charging hose from the service port of the 3 way valve 8 Fully open the valve cores of both 2 way valve and 3 way valves and then securely tighten the brass valve cover caps 2 Air purging by refrigerant Procedure 1 Confirm that both the 2 way and 3 way service valves are set to the closed position 2 Connect the charging set and a charging cylinder to the service port of the 3 way valve 3 Air purging Open the valves on the charging cylinder and the charging manifold set Purge the air by loosening the flare nut on the 2 way valve approximately 45 for 3 seconds then closing it for 1 minute repeat this for 3 additional times After purging the ai
19. 0x896 20 Blue C 20 20 20 C 20 C C 5 4 way valve 1 Power on use a digital tester to measure the voltage when the unit operates in cooling it is OV 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 6 EXV check Disconnect the connectors F DUS ED 1 l L p 1 17 Tat TAALA 4 3 2 Red Brown Blue Orange YellowsWhite 7 Resistance to EXV coil Color of lead wire Normal Value Red Blue Red Yellow About 50O Brown Orange Brown White Red Blue Red Yellow Brown Orange 300 nv Brown White 9 Disassembly Instructions gt Model YNO018GMFI16M2D i T EE How to remove the panel Screws of top cover 1 Panel plate plate 1 Stop operation of E SN the air conditioner and turn OFF the power breaker 3m 1 ED 2 Remove the screws of top t cover and remove the top m cover 9 Screws Screws of front panel Screws of right front side panel Remove the screws of right front side panel and remove the right front side panel 2 screws mmm Remove the screws of front panel and remove the front panel 9 screws Remove the screws of big handle and remove the big N 4 Screws of right 7 Scre
20. 12K YN018GMFI 16M2D PL SUGGESTED INDOOR UNIT WBOO9GMFI16MLD WB012GMFI16MLD CB012GLFI16MLD RBO12GMFI16MLD UB012GMFI16MLD FBO12CMFI16MLD WB018GMFI16MLD CBO18GLFI16MLD RB018GMFI16MLD UB018GMFI16MLD q LL N N e 2 gt Po SUGGESTED INDOOR UNIT WBOO9GMFI16MLD WB012GMFI16MLD CB012GLFI16MLD RB012GMFI16MLD UB012GMFI16MLD FBO12CMFI16MLD WB018GMFI16MLD CBO18GLFI16MLD RB018GMFI16MLD UB018GMFI16MLD YNO36GMFI 16M4D 3 Dimensions Of the Outdoor Units Air inlet cs Air m Dimension mm In Model W D H W1 A B YNO18GMFI16M2D 845 33 3 320 12 6 700 27 6 908 35 7 560 22 335 13 2 YNO27GMFI16M3D YNO36GMFI16M4D 990 39 345 13 6 965 38 1075 42 3 624 24 6 366 14 4 4 Refrigerant Cycle Diagram 5 1Refrigeration circuit drawing of inverter dual zone 2 zones INDOOR OUTDOOR EXV A CAPILIARY A LIQUID VALVE A Im SAEED reso a CHECK VALVE yy VUVVV x lt EXV B CAPILIARY B W LIQUID VALVE B MM T3 552 Xo revo LASS L Y Condenser ie OS lt g
21. 20 0 550 20 0 530 20 3 IPM continuity check Turn off the power let the large capacity electrolytic capacitors discharge completely and dismount the IPM Use a digital tester to measure the resistance between and UVWN UVW and Normal Normal resistance 2 Digital tester resistance value value Uo P Several MQ N Several 4 AC Fan Motor Measure the resistance value of each winding by using the tester Digital tester Input Terminal R d 1 EN lt 2 Black 2 White 3 Black Resistance Value eS Black Red 3810 8 20 C 3420x896 20 C 183 60 8 20 C 1800 8 20 C ERN Brand Weiling Brand Dayang Brand Weiling Brand Wolong White Black 2670x896 20 2530x896 20 2060x896 20 C 1900x895 20 C ERN Brand Weiling Brand Dayang Brand Weiling Brand Wolong Measure the resistance value of each winding by using the tester Blue Yellow Red Black Brown Resistance Value YDK180 YDK53 YDK70 6FB 8GB YSK27 4G YSK68 4B YDK45 6B YSK25 6L 6FB B Black Req 5008 24 5028 3170 8 145028 345018 6270 8 88 50 8 Se 20 C 20 C 20 C 20 C 20 C 20 C 20 C Red 760 8 190 8 20 2520 8 880 8 1500x896 374 30 8 1380x896 20 Yellow 20 C C 20 20 20 C 20 C C Yellow 190x896 20 2520x896 880x896 1500x896 374 30 8 138
22. 2p 2p white CN15 High and low pressure switch 2p 2p white CN28 CN26 CN25 CN23 electronic expansive valve A B C D 6p 6p 6p 6p red red red red CN31 CN29 CN27 CN24 S A B C D 22 CN33 3p 3p 3p 3p white white white white CN1 CN2 red black connected to power terminal P 1 yellow green grounding wires of PCB 8 Remove the PCB board after CN15 CN21 CN18 CN13 remove the fixing screws CN28 CN26 CN25 CN23 How to remove the 4 Compressor 9ipressor Perform work of item 1 2 3 Remove the electrical control box and partition plate Extract refrigerant gas Remove the sound insulation material and crankcase heating cable Remove terminal cover of compressor and disconnect wires of compressor thermo and compressor from the terminal Remove the discharge pipe 1 and suction pipe with burner Remove the hex nuts and washers fixing the compressor to bottom plate 8 Lift the compressor 5 The 4 way How to remove the 4 way valve waive Perform work of item 1 2 Extract refrigerant gas Remove the electrical parts from item 3 Welded parts Remove fixing screw of the coil and remove the coil Detach the welded parts of 4 way valve and pipe How to remove the expansion expansion valve valve Perform work of item 1 2 Remove the electrical parts from item 3 Expansion Remove the coils 27 valves Detach the welded part
23. 3 Replace the connecting line or reactor or replace the PFC module for MAOC 36HRFN1 M 9 4 1 7 Over voltage or too 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 No Yes v Check whether the voltage of IPM board P and N is normal DC277 356V for 18 27KBtu h DC277 410V v Check the power supply No v Replace bridge rectifiers and then check whether the system can run normally Only for qua zone z LAO Replace IPM board and then check whether the system can run normally Yes No v Replace outdoor main board v 7 rouble is solved 9 4 1 8 Temperature protection of compressor top diagnosis and solution If the sampling voltage is not 5V the LED will display the failure Wiring mistake Over load protector faulty System block Outdoor PCB faulty Temperature protection of compressor top Whether compressor Whether the connection is No No Reconnect and retest operates good Yes Whether refrigerant circulation volume is normal j Whether protector is normal N Replace the protector protector is normal resistance 0 No
24. D 13 WP2 1 H a 8 rui 4 ii e ZEE 2 AI 7 a 12V Puloe wave INDOOR AND OUTDOOR COMMUNICATION 2 9 2012 12 01 196 254VAC POWER SUPPLY IPM board of YN018GMF116M2D and YN027GMFI16M3D 1 41 2012 12 18 d Ci m ic 8 R208 To PFC board U V W Connect to tha compressor voltaga among phases 1 7YDC main board No use RL amp e c22 7 4 ml he b EHZ 202302130637 1 Lem 05 273 1 310 060 0 13 MP2 1 8 3 Wiring diagram of QUAD 4 Circuit Outdoor Units YNO36GMFI16M4D 202057190160 ELECTRONIC ELECTRONIC ELECTRONIC ELECTRONIC EXPANSIVE EXPANSIVE EXPANSIVE EXPANSIVE oe eee SIS aaa N COMPRESSOR NU TEMP PRO peseses dod oU eee SWITCH ce ee Ek 3 4 i 0 0024 C LCN27 LCN29 A LON31 CN22 CN33 CN12 4 MAIN BOARD e RY1 on REOTIFILER2 NO YELLOW CN32 9010 YELLOW FAN CAPACITOR Y G OPTIONAL HEATER PCB board of YNO36GMFI16M4D 12V0C pulse wave LEV R P d LIT Ter 7N 17 CN 1 27 2 all a 12V INDOO
25. IPM and wires connected from CN21 CN26 CN28 PCB and other parts Connectors CN13 T A B temp sensor 2p 2p white CN18 T3 T4 temp sensor 2p 2p white CN14 Top temp sensor 2p white CN21 Tdischarge temp sensor 2p white CN3 CN26 CN28 Electronic expansive valve A B 6p 6p red red CN29 CN31 S A S B 3p 3p white white Wires CN6 CNS9 4 way valve blue blue 10 ZNI CNG CN7 CN10 Crankcase heating cable red red CN11 CN12 Fan capacitor yellow CN12 yellow CN1 L IN red mn CN2 N IN black 5 Disconnect the grounding wires yellow green 6 Remove the PCB board 4 5 Compressor Reactor1 2 How to remove the compressor 1 Perform work of item 1 2 3 2 Remove the electrical control box and partition plate Extract refrigerant gas Remove the sound insulation material and crankcase heating cable Remove terminal cover of compressor and disconnect wires of compressor thermo and compressor from the terminal Remove the discharge pipe and suction pipe with a burner Remove the hex nuts and washers fixing the compressor to bottom plate 8 Lift the compressor How to remove the reactor 1 Perform work of item 1 2 Remove two screws of cover of inductance and remove the cover of inductance Disconnect two pieces of Screwsof scover of connection wirings inductance between reactor and capacitor and con
26. IQUID VALVE 21 a n 2 EN 22255 99000 EXV B CAPILIARY B LIQUIDVALVE Bg T O XK ki 00 000 CHECK VALVE lt _ obvinet CAPILIARY 4 00000 5 NAT PS gt T3 ee A AERE 60000 Condenser EXV D CAPILIARY D g temp sensor LIQUID VALVE D and CAPILIARY TUBE 0000 VIEN E HEAT T4Ambiento EVAPORATOR A 1 temp sensor EXCHANGE N temp sensor CONDENSER T2B A Evaporator GAS VALVE A temp sensor outlet N A go T2 Evaporator 0 ols Qu temp sensor GAS VALVEB 1288 4 i S10 middle gt lt i I N e X 4 WAY VALVE uibs GAS VALVE 12856 Accumulator SKAB 7 pressure as MN ee eR 4 COOLING a Discharge 4 Low pressure 7 __ temp sensor switch Compressor 5 Installation Details When refrigerant pipe diameter is different 6 1 Wrench torque sheet for installation from that of outdoor unit union for 12K and Torque Additional tightening 18K indoor units additional brass adapter 9996 union Supplied needs to be used on outdoor 9 52 3 8in 2500N cm 18 Lbf Ft 2600N cm 19 Lbf Ft Pipe diameter Extension pipe diameter 12 7mm 1 2in 3500N cm 26 Lbf Ft 3600N cm 27 Lbf Ft mm inch ToU 6 35 1 4 6 35 1 4 9 52 3 8 9 52 3 8
27. M 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 at 0 5 sec Note Digital display is only available for duct type Display EO E1 E2 E4 ES E6 E7 F5 PO 1 2 P4 P5 ODU Error code P4 4 5 P3 27 9 3 Outdoor Unit Display 9 3 1 Outdoor unit error code function There is a system check switch on the outdoor PCB Push the switch SW1 to check the states of unit when the unit is running The digital display will display the follow procedure when push SW 1 each time SW1 po ooo Lr oot se Ly Actual data If the temp is lower than 9 degree the digital display tube will show 9 If the temp is higher than 70 degree the digital display M NM Outdoor ambient temp T4 11 Compressor discharge temp Tp Actual data If the temp is lower than O degree the digital display tube will show O If the temp is higher than 99 degree the digital display ILE Evaporator outlet temp for 2 indoor unit tube will show 70 If the indoor unit is not connected the
28. PFC module forM4OC 36HRDN1 M 9 4 2 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 sensor is correct refer to the Appendix 1 Yes Replace outdoor main board Yes v Judge 1 Check whether the outdoor ambient temperature is higher than 50 C No Y 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 9 4 2 12 P7 Inverter compressor drive protection error diagnosis and solution The same as P4 IPM module protection 9 4 2 13 PF PFC module protection error diagnosis and solution Only for YNO36GMFI16M4D off Trouble shooting PFC module protection
29. R AND OLITDOOR ae 2012 1 4 2 01 IPM board of YNO36GMFI16M4D To PFC board U V W Connect to tha compressor voltaga among phases 0 200VDOC UDC main board No use ma 52 b 2 202302130632 n Ge ur CE KFR1OSU BP2T3N1 31DC7675 D 13 MP2 1 8 Troubleshooting 9 1Safety Because there are capacitors on the PCBs and relative circuitry in outdoor units even after shutting down the power supply electrical power remain charged in those capacitors Do not forget to discharge the electrical power remaining in the capacitors before servicing The value of resistance used for discharging the power should be about 1500 ohms to 2000 ohms Resistance Electrolytic Capacitors HIGH VOLTAGE CAUTION Bulb 25 40W The voltage in P3 and P4 in outdoor PCB is high voltage about 310V The voltage in P5 and P6 in outdoor PCB is high voltage about 310V 8 2 Indoor Unit Error Display WB series Wall Mount Indoor Units Display EO E1 E2 E3 ES E6 PO 1 2 P3 P4 P5 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 EEPROM malfunction Open circuit or short circuit of T1 or T2 temperature sensor IPM module protection or IGBT ove
30. YN M SERIES MULTI SPLIT SYSTEM MULTI CIRCUIT OUTDOOR UNITS 2 3 AND 4 ZONES SERVICE MANUAL Parker Davis HVAC International Inc 2260 NW 102nd Place Doral FL 33172 Ph 305 513 4488 info pd hvac com Model Numbers YNO18GMFI16M2D Dual YN027GMFI16M3D Trio YNO36GMFI16M4D Quad Table of Contents 1 2 3 4 5 6 7 8 9 1 0 Product Specifications Indoor Unit Combination Suggested Indoor Unit Model Numbers Dimension Of Outdoor Unit Refrigerant Cycle Diagram Installation Details Electronic Function Wiring Diagrams And Electrical Trouble Shooting Disassembly Instructions Exploded View WARNING Installation MUST conform with local building codes or in the absence of local codes with the National Electrical Code 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 Lemgo technician familiar with safety procedures and equipped with the proper tools and Imm test instruments Intertek Installation or repairs made by unqualified persons can result in hazards to you and others Failure to carefully read and follow all instructions in this manual can result in equipment malfunction property damage personal injury and or death CONTENTS Indoor WIE COM DIN ATOM Eme 4 Suggested IndoornitViodel NUIMMO CIS oM otis
31. d 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 P id Input Terminal ee N Black 2 2 2 White 1 _ SN White 3 pT yL V NV V O Black 4 N E 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 For other models For console DC motor voltage input and output For light commercial except console Signs Voltage om d Be oe ov White vee 185468 Yeu 0 65 r6 Wo 15 wv FG 9 4 1 5 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 W
32. digital display tube will show single digit and tens digit For example the digital display tube show 0 5 it means the compressor discharge temp is 105 degree If the indoor unit is not connected the digital display tube will show 2 3 4 5 7 10 12 AD value of current AD data decimal numeral 13 14 15 16 EXV open angle for B indoor unit Actual data times 8 EXV open angle for C indoor unit Actual data times 8 8 EXV open angle for D indoor unit Actual data times 8 17 AD value of voltage AD data AD data 472 255 actual data If AD data is higher than 99V the digital display tube will show single digit and tens digit EXV open angle for indoor unit Actual data times 8 18 Indoor unit number The indoor unit can communicate with outdoor unit well Display Number of indoor unit The last error or protection code 00 means no malfunction frequency value Actual data A indoor unit room temp T4A Actual data 22 A indoor unit evaporator temp T2A Actual data B indoor unit room temp T B Actual data B indoor unit evaporator temp T2B Actual data C indoor unit room temp T4C Actual data C indoor unit evaporator temp T2C Actual data D indoor unit room temp T D Actual data D indoor unit evaporator temp T2D Actual data 29 9 3 2 Outdoor unit s digital display digits There is a digital display tube in outdoor PCB Digital display tube display function e n standby the LED displays e n
33. door fan will choose its speed according to T4 again 131 Exit low ambient cooling mode run with high fan 38 for 1 minute 30 27 Low 23 off Y 7 4 3 2 Heating mode For YNO27GMF116M3D T4 14 Low 12 High For YNO18GMFI16M2D YNO30GMFI16M3D and YNO36GMFI16M4D DC FAN SSLOW SPD ADD DC FAN SLOW SPD ADD DC FAN MIN SPD ADD DC FAN MID SPD ADD DC_FAN_HI_SPD_ADD 7 4 4 Electronic Expansion Valve EXV Control 1 EXV will be fully closed when the power is first turned on Then EXV will stay at standby with 350P open and will open to target angle after compressor starts 2 EXV will close with 160P when compressor stops Then EXV will stay at standby with 350P open and will open to target angle after compressor starts 3 The action priority of the EXVs is A B C D 4 Compressor and outdoor fan start operation only after EXV is initialized 7 4 4 1 Cooling mode The initial open angle of EXV is 250P adjustment range is 100 350p When the unit starts to work for 3 minutes the outdoor will receive indoor units of capacity demand T2B information and calculate an average of them After comparing each indoor s T2B with the average the outdoor gives the following modification commands If the T2B average the relevant valve needs 16p more open If the T2B average the relevant valve s open range remains If the T2B average the relevant valve needs 16p more close
34. e set and charge the system with liquid refrigerant If the system cannot be charged fully with the specified amount of refrigerant or can only be charged with little amount at a time approx 150g 5 Ozs each time while operating the air conditioner in the cooling cycle wait approx 1 minute and then repeat the procedure o When the electronic scale displays the proper weight disconnect the charge hose from the 3 way valve s service port immediately If the system has been charged with liquid refrigerant while operating the air conditioner turn off the air conditioner before disconnecting the hose 6 Mount the valve stem caps and the service port cap Use torque wrench to tighten the service port cap to a torque of 18N m Be sure to check for gas leakages 6 Electronic Function 7 3 4 Inverter module Protection 7 1 Abbreviation Inverter module protection has protection functions against current voltage and T1 Indoor ambient temperature temperature If these protections are triggered the corresponding code will display on indoor unit T2 Coil temperature of indoor heat exchanger s LED and A C will stop The unit will recover 3min mid point after the protection conditions disappear T2B Coil temperature of indoor heat exchanger s 7 3 5 Low voltage protection outlet T3 Pipe temperature of outdoor heat exchanger 922 7 No limit T4 Outdoor ambient temperature VOLT_RST1_ADD VOLT_LTM1_ADD
35. e leakage is serious there gauge lo ihe gaugs Jont orhe will be distinct gas leakage cici sound if the system check whether the Yes gt k th d ixt f pressure is lower than eakage is slight use the su Is mix ure o 0 14MPa water and abluent is also ok if it can make bubble or electronic leak detector No v Judge 5 The refrigerant Let the refrigerant out then use the high Yes pressure nitrogen refrigerant to blow pipe pipe is blocked vacuumize and charge the refrigerant again v Replace outdoor main board 9 4 2 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 PCB 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 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 th
36. e outdoor unit ventilate well Judge 4 Check whether the heat exchanger is dirty es gt Clean the heat exchanger v 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 Replace the electric control box Sw Yes gt Trouble is solved D 9 4 2 10 P4 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 P4 and AC will turn off Wiring mistake IPM malfunction Outdoor fan ass y faulty Compressor malfunction Outdoor PCB faulty Trouble shooting IPM module pratection Check whether the voltage range of P N on IPM module is normal DC277 356V for 18 27KBtu h DC277 410V for 36KBtu h Yes whether the connecting line between main board and the IPM module is connected tightly Yes heck whether the connecti line of the compressor is annected correctly or tigh Yes Replace the IPM module check whether the system can work normally heck if the outdoor fan runs properly or the outdo
37. ection Only for YNO36GMFI16M4D 9 4 Diagnosis and Solution 9 4 1 Indoor unit trouble shooting 9 4 1 1 Indoor EEPROM malfunction diagnosis and solution pean MEN PCB main chip does not receive feedback from EEPROM chip Installation mistake 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 No Insert the EEPROM well check whether the EEPROM chip plugged in PCB well Yes Y Replace the indoor PCB Supposed causes 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 9 4 1 2 Indoor outdoor unit communication error diagnosis and solution Indoor unit does not receive the feedback from outdoor unit during 120 seconds Wiring mistake Indoor or outdoor PCB faulty 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 No
38. en B will change to stand by and A will be no change No No mode conflict Yes Mode conflict 9 4 2 Outdoor unit trouble shooting 9 4 2 1 E0 Outdoor EEPROM malfunction error diagnosis and solution Installation mistake faulty eee PCB 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 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 the location of EEPROM chip please refer to the below photos Outdoor PCB YN018GMFI16M2D 9 4 2 2 E4 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 Trouble shooting If the sampling voltage is lower than 0 06V or higher than 4 94V the LED will display the failure Wiring mistake Sensor faulty faulty Check the connections between temperature sensor and PCB Are gt Correct the connections the connections good Yes Check the resistance value of the sensor via Appendix 1 and Appendi
39. ervice port cap to a torque 18N m Be sure to check the gas leakage 6 7 Re installation while the outdoor unit needs to be repaired 1 Evacuating the entire system CLOSE Procedure 1 Confirm that both the 2 way and 3 way valves are set to fully opened position 2 Connect the vacuum pump to 3 way valve s service port 3 Evacuate for approximately one hour Confirm that the low side pressure gauge indicates 0 1Mpa 14 5 Psi 4 Close the valve Low side on the charging set turn off the vacuum pump and confirm that the gauge needle does not move within approximately 15 minutes after turning off the vacuum pump 5 Disconnect the charging hose from the vacuum pump 2 Refrigerant charging Gas ee LE dis 3 way valve o 8 f n Procedure 1 Connect the charging hose to the charging cylinder open the 2 way valve and the 3 way valves Connect the charging hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder If the refrigerant is R410A set the cylinder upside down to ensure liquid charge 2 Purge the air from the charging hose Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air be careful of the liquid refrigerant 3 Put the charging cylinder onto an electronic scale and record the weight 4 Open the valve Low side on the charg
40. es Check the wires of fan motor Are all the connections good No Correct the connections v Yes If the Check whether the fan malfunction is Replace the fan ae motor is normal through No still existing motor index 1 replace the main PCB No Yes Replace the main PCB Check whether the main PCB is normal through index 2 No The malfunction 15 solved Yes Index 1 1 Indoor AC fan motor Measure the resistance value of each winding by using the tester R e d Input Terminal E Red 1 lt Black 2 White 3 _ Black b For the definite value of the resistance refer to 9 5 Trouble Criterion Of Main Parts gt 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 ret s me CNN eon For other models lox cxx yod NX pq Xx NON NS Fg NS Index2 1 Indoor AC fan motor Power on an
41. ether the heat exchanger is dirty Let the refrigerant out then use the Judge 6 Check whether the Y high pressure nitrogen or refrigerant to Yes refrigerant pipe is blocked blow pipe vacuumize and charge the refrigerant again Replace outdoor main board Yes Clean the heat exchanger 9 4 2 8 P2 Low pressure protection error diagnosis and solution Only for YNO36GMFI16M4D 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 Low pressure protection Judge 1 Whether the wiring between the low pressure protector and main contro board is connected well or correctly Yes Y Judge 2 Whether the low pressure protector is broken v Method Short connect the No Connect it well low pressure protector socket check whether the Yes Replace low pressure protector system can run normally or test the resistance No y Check whether the refrigerant system is ok Judge 3 Check whether the outdoor ambient Yes Stop the unit temperature is too low No Y Judge 4 The refrigerant of the system is leakage Leak hunting Charge nitrogen or refrigerant Method Connect the pressure to the system if th
42. ference between indoor units Connection wiring 2 Bl 2 N on of al o o N amp 2 2 AR O IR Plug type Remote control Remote control Remote control Thermostat type cooling 32 122 32 122 32 122 5 122 Operation temperature 15 15 15 24 15 24 5 75 2 5 75 2 5 752 heating heating 5 75 2 N A 1 Indoor Unit Combination Multi DC Nominal Suggested Limit Multi DC Nominal Suggested Limit Outdoor Unit capacity Combination Outdoor Unit capacity Combination i 9 DUAL ZONE s 18K Nominal dd oe NODE 18 9 12 949 12 12 9412 9 18 Multi DC Nominal Suggested Limit Outdoor Unit capacity Combination 12 18 9 18 18 12 9 9 9 18 9 9 12 9 9 9 9 18 12 2 None TRIPLE ZONE 7 kW only one Floor 27K Nominal 12 12 Ceiling Duct 9418418 12418 n 12 12 12 9 9 9 12 12 18 9 9 12 12 18 18 9 12 12 9 9 9 9 12 12 12 9 9 9 12 9 9 9 18 9 9 12 12 9 9 12 18 9 12 12 12 9 12 12 18 12 12 12 12 NOTICE This combination results in slightly reduced performance We recommend going one size up for the outdoor section for obtaining fully rated performance 2 Suggested Indoor Unit Model Numbers P SUGGESTED INDOOR UNIT
43. hooting 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 Is 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 Replace control Trouble is solved Yes 17 2 47122194872 oe 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 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 reset when is less than 90 Refrigerant leakage Wiring mistake The discharge temperature sensor faulty Outdoor PCB faulty Trouble shooting Temperature protection of compressor discharge Check whether the compressor discharge temp Ye is more than 115 C Check
44. imited per the below COOL F11 ICOOLLMT7 rules COOL F10 ICOOLLMT6 If 102 C Tp 115 C decrease the frequency to the lower level every 2 minutes till reaching F1 COOL F9 ICOOLLMT5 COOL_F8 ICOOLLMT4 lf gt 115 C for 10 seconds the compressor will stop and restart when lt 90 COOL_F6 ICOOLLMT2 7 3 3 Fan Speed is out of control DC fan motor COOL_F5 ICOOLLMT1 f If the current frequency is lower than COOL F4 the freguency will When outdoor fan motor speed is lower than not belimited ae 5 or higher than 2400RPM for 60 After 10s of the compressor start if the current gt ICOOL the AC will seconds the whole unit stops and LED displays 2 for 30 seconds stop The will restart 3 failure Heating mode Current Current limit Frequency limit frequency Hz value A IHEATLMT12 Decrease the frequency to HEAT F4 and run at HEAT F4 for IHEATLMT11 3 minutes HEAT F16 HEAT F15 10 After that the frequency will be adjusted according to the capacity demand and rise to the upper level every 3 minutes When the frequency gt Heat_F4 via HEAT_F12 IHEATLMT8 capacity demand HEAT_F11 IHEATLMT7 HEAT F14 HEAT F13 IHEATLMT9 HEAT F10 IHEATLMT6 HEAT_F9 IHEATLMTS5 HEAT F8 IHEATLMT4 HEAT F7 IHEATLMT3 HEAT F6 IHEATLMT2 HEAT F5 IHEATLMT 1 If the current frequency is lower than HEAT F4 the frequency will not be limited
45. ing cylinder onto an electronic scale and record the weight 4 Operate the air conditioner at the cooling mode 5 Open the valves Low side on the charging set and charge the system with liquid refrigerant 6 When the electronic scale displays the proper weight refer to the table disconnect the charge hose from the 3 way valve s service port immediately and turn off the air conditioner 7 Mount the valve stem caps and the service port cap Be sure to use a torque wrench to tighten the service port cap to a torque 18N m Be sure to check the gas leakages 6 5 Adding the refrigerant after running the system for many years Recommended only if the refrigerant being added does not exceed 10 of the total refrigerant amount Otherwise remove the remaining refrigerant entirely and recharge fully Procedure 1 Connect the charging hose to the 3 way service port open the 2 way valve and the 3 Way valve Connect the charge hose to the valve at the bottom of the cylinder If the refrigerant is R410A make the cylinder is upside down to ensure liquid charge 2 Purge the air from the charge hose Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air be careful of the liquid refrigerant 3 Put the charging cylinder onto an electronic scale and record the weight 4 Operate the system at the cooling mode 5 Open the valve Low side on the charging set a
46. iring mistake Sensor faulty PCB faulty Trouble shooting Check the connections between temperature sensor and PCB Are No gt Correct the connections the connections good Yes v Check the resistance value of the sensor via Appendix 1 and Appendix 2 Yes Replace indoor or outdoor PCB Replace the sensor 9 4 1 6 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 P6 and AC will turn off Wiring mistake IPM malfunction Outdoor fan ass y faulty Compressor malfunction Outdoor PCB faulty Trouble shooting Yes 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 Yes heck whether the connecting line between main board and the IPM module is connected tightly Yes eck whether the connecting line of the compressor is onnected correctly or tigh Yes Replace the IPM module check whether the system can work normally heck if the outdoor fan runs properly or the outdoor nit ventilation is good Replace the main board check whether the system can work normally eplace the compressor check whether the syste
47. l the indoor capacity requests together bos T4LimFrel ADD then modify it by T4 b 37 No limit When there is only one indoor unit i Outdoor temperature 4 Heating mode Cooling T1 Ts When there are more than one indoor units 3 NI 3 2 6 2 Outdoor temperature 4 1 0 NC Cooling 0 Li Nc o 17C 25 C Note The final result is integer She eels a In low ambient cooling mode modify rate is fixed Plus all the indoor capacity requests together When T2 T2 ExitT4LowFre ADD 2 and 4 gt 6 then modify it by T4 the highest frequency can t exceed F17 When there is only one indoor unit When T2 T2 ExitT4LowFre ADD 4 and 4 gt 8 the highest frequency can t exceed F18 E the highest frequency can t exceed F19 Modify rate 120 80 20 For all other conditions the highest frequency is me 7 4 2 Defrost control When there are more than one indoor units Condition of defrosting Outdoor temperature T4 Heating TempEnterDefrost ADD and lasts for 40 E 12 C 17 minutes Modify rate rate 120 100 Defrosting action Note The final result is integer 4 way valve defrosting Defrosting over Then modify it according to T2 average correction compressor Max 10 minutes Note Average value of T2 Sum 2 value of all indoor units indoor units number frequency Cool F9 Compressor stops 10S
48. le Criterion Of Main Parts Spec Model 9k Wall 12k Wall 18k Wall Indoor fan motor RPG20B RPG20B RPG28H 12K Ducted 18K Ducted Indoor fan motor YSK27 4G YSK68 4B Model WZDK37 38G WZDK37 38G Model 12K Floor Ceiling 18K Floor Ceiling 12K Cassette 18K Cassette pw wr pap cj pee curan Gee onssioa ea vomer vomere 1 Temperature sensor checking Disconnect the temperature sensor from PCB measure the resistance value with a tester 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 meter Appendix 1 Temperature Sensor Resistance Value Table v Kom kom gt 29 1296 239874 39 9693 Ca eso 25 osa 1 3 0852 Los 3109 04m _ essee e 56 3694 7 29464 1 53668 0 44699 3 8 6 34 74 14394 4 0424 3 41 5878 5 87359 1 29078 0 38991 39 8239 5 62961 1 25423 0 37956 39294 40 saree 39 0 03592 2 asa 46 0968 03074 EE NER
49. m can work normally No Connect it tightly check ok or not tightly heck whether the input power supply is correct 208 230V 1N 60Hz Check whether the power supply line is connected correctly and egulate it to correct then check whether the system can work normally Connect it correctly and tightly check ok or not Ok or not Connect it well check For AC fan models please refer to 9 4 Trouble Criterion Of Main Parts check whether the resistance of the fan motor is normal If not replace the fan motor For DC fan models refer to the solution of fan speed has been out of control malfunction Find out the cause and have it solved Yes Yes Check whether the line in E part box are connected tightly ET A 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 Yes Replace the bridge rectifiers Check whether the connecting line of every reactor is normal If the line is broken the resistance of the two ports is co models except for M40C 36HRFN1 M amp M40C 36HRDN1 M Check whether the PFC module broken for M40C 36HRFN1 M amp MAOC 36HRDN1 M C Trouble is solved
50. nd charge the system with liquid refrigerant 6 When the electronic scale displays the proper weight refer to the gauge and the pressure of the low side disconnect the charging hose from the 3 way valve s service port immediately and turn off the air conditioner before disconnecting the hose 7 Mount the valve stem caps and the service port cap Use torque wrench to tighten the service port cap to a torque of 18N m Be sure to check for any gas leakages 6 6 Re installation while the indoor unit needs to be repaired 1 Collecting the refrigerant into the outdoor unit k EP S Procedure 1 Confirm that both the 2 way and 3 way valves are set to the opened position Remove the valve stem caps and confirm that the valve stems are in the opened position Be sure to use a properly sized hexagonal Allen wrench to operate the valve stems 2 Connect the low side hose of the charging manifold to the 3 way valve s gas service port 3 Air purging the charging hose Open the handle Lo side valve of the manifold slightly to purge air from the charging hose for 5 seconds and then close it quickly 4 Set the 2 way valve core to fully closed position 5 Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0 1Mpa 14 5Psi 6 Set the 3 way valve core to the fully closed position immediately Do this quickly so that the gauge ends up indicating 0 3Mpa 43 5Psi to 0 5 Mpa 72
51. ndle and remove the big handle 4 screws Remove two screws of E Screws of right 3 p Screws of terminal board two screws Pane lt front panel of water collector and twelve screws of right rear panel and remove the right rear panel 1 y Screws of big handle SN Screws of i panel crews of water collector How to remove the fan ass y 1 Remove the top cover right front side panel and front panel from item 1 step 1 4 2 Remove the hex nut fixing the fan 3 Remove the fan Electrical parts 4 Remove the two fixing screws and then open the electrical control box cover 5 Disconnect the fan motor connector CN3 5p white from the PCB board 6 Remove the fan motor after unfastening six fixing screws Note There are two kinds of screws Please pay attention to it when install the fan motor How to remove the electrical parts 1 Perform work of item 1 2 2 Disconnect following connection wires and connectors between IPM and IPM board PCB board PCB P red connected to P2 on PCB blue connected to P4 on UVW to compressor UVW blue red black connected to compressor CN1 5p white connected to CN22 on PCB 3 Remove the IPM board after removing the two screws Screws of IPM CN21 CN25 CN26 CN28 CN22 GN2T CN29 CN31 4 Disconnect the connectors and wire
52. nection wirings between reactor and rectifier wirings of reactor blue orange reactor2 red red 4 Remove two screws of each reactor and remove the reactor Reactor3 How to remove the reactor Screws of reactor 1 Perform work of item 1 2 Disconnect two pieces of connection wirings Tit am wirings 3 Remove two screws of each reactor and remove the reactor The 4 way How to remove the 4 way valve valve Perform work of item 1 2 Extract refrigerant gas Remove the electrical parts from item 3 Remove fixing screw of the coil and remove the coil Detach the welded parts of 4 way valve and pipe How to remove the expansion expansion valve valve Perform work of item 1 2 Remove the electrical parts Expansion valves from item 3 Remove the coils Detach the welded parts of expansion valves and pipes gt Model YN027GMFI16M3D uu un How to remove the panel plate Screws of top cover 1 Panel plate 1 Stop operation of the air conditioner and turn OFF the power breaker Remove the screws of top cover and remove the top cover 9 screws Remove the screws of right Screws of froht panel front side panel and Screws of right front side panel remove the right front side panel 2 screws Screws of top cover Remove the screws of front panel and remove the front panel 9 screws Remove the screws of big ha
53. or unit ventilation is good No Replace the main board check whether the system can work normally eplace the compressor check whether the system can work Yes normally Connect it tightly check ok or not Connect it well check ok or not Check whether the input power supply is correct 208 230V IN 60Hz Check whether the power supply line is connected correctly and tightly Check whether the line in E part box are connected tightly egulate it to correct then check whether the system can work normally Connect it tightly check ok or not Connect it correctly and tightly check ok or not GENE MA Please refer to 9 5 Trouble Yes Criterion Of Main Parts check whether the resistance of the fan motor is normal If not replace the fan motor 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 0 Yes Replace the bridge rectifiers Check whether the connecting line of every reactor is normal If the line is broken the resistance of the two ports is eo models except for M4OC 36HRDN1 MD Check whether the PFC module broken for M40C 3GHRDN1 M C Trouble is solved P Replace the connecting line or reactor or replace the
54. ows through the windings of the compressor through its wiring terminal then the compressor stays heated while it is off Preheating release condition If T4 5 C or the capacity demand isn t zero preheating function will stop 7 3 12 Compressor crankcase heater Preheating permitting condition o When T4 3 C within 5 seconds of being plugged in the crankcase heater will be active When T4 lt 3 C and the compressor is not running for 3 hours the crankcase heater will be active Preheating release condition When T425C or the indoor has any capacity demand the crankcase heater will stop working 7 4 Control and Functions According to the final capacity request to confirm the operating frequency as per the following table Total capacity Request 2 Norm code x HP 10x modify correction COO COO COOL y Frequency Hz L F2 F15 RE Cooling mode Amendatory capacity 1 2 15 16 demand 7 4 1 Capacity Request Calculation Ti Ts 1 4 52 7 3 Meanwhile the maximum running frequency will 2 Cy 2 be adjusted according to the outdoor ambient 1 a 1 temp e 0 1 f 14 _ T4LimFre5 ADD Capacity area a b c d e f M M RE 48 a 2 02400 mmm 45 K T4LimFre3 ADD 22 42 41 T4LimFre2 ADD Note The final result is an integer 48 Plus al
55. r use a torque wrench to tighten the flare nut on the 2 way valve 4 Check for any gas leakage Check all flare connections for gas leakage 5 Discharge the refrigerant Close the valve on the charging cylinder and discharge the refrigerant by loosening the flare nut on the 2 way valve approximately 45 until the gauge indicates approximately 45Psi to 0 5 Mpa 7OPsi Tighten the flare nut fully 6 Disconnect the charge set and the charging cylinder and open both cores of the the 2 way and 3 way valves to fully open position Be sure to use a proper size hexagonal Allen wrench to operate the valve stems 7 Mount the valve stem caps and the service port cap Be sure to use a torque wrench to tighten the service port cap to a torque 18N m Be sure to check the for gas leakages 3 Adding refrigerant if the pipe length exceeds length for factory pre charge pipe length value Procedure 1 Connect the charging hose to the charging cylinder open both the 2 way valve and the 3 way valve Connect the charging hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder If the refrigerant is R410A make sure the cylinder is upside down to ensure liquid charge 2 Purge the air from the charging hose Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air be careful of the liquid refrigerant 3 Put the charg
56. r 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 FB Series Floor Console Indoor Units Operation X ODU Error code EO E4 P4 E5 PO Timer De frost Failure X X Open or short circuit of T1 temperature sensor X Open or short circuit of T2 temperature sensor Indoor outdoor units communication error X Indoor EEPROM malfunction o Outdoor fan speed has been out of control X IPM module protection Open or short circuit of T3 or T4 temperature sensor or Outdoor unit EEPROM parameter error e X Temperature protection of compressor top X Inverter compressor drive protection X Mode conflict Indoor fan speed has been out of control flash at 5 sec light ON X extinguished flash at 0 5 sec For CB Series Ceiling Cassette RB Series Ceiling Concealed Ducted and UB Series Floor Ceiling Flex Mount Indoor Units Operation HF Timer x x x x e De frost Alarm x X X x 0o x x S Mo P MES eo x xX x 0 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 IP
57. reactor Screws of over of inductance Connection wirings of reactor1 blue oranae Connection wirings of reactor2 red red Screws of reactor How to remove the reactor 1 Perform work of item 1 2 Disconnect two pieces of connection wirings wirings 3 Remove two screws of A EE Screws of 4 reactor each reactor and remove the reactor The 4 way valve How to remove the 4 way valve Perform work of item 1 2 Extract refrigerant gas Remove the electrical parts from item 3 LEVA F Welded parts Remove fixing screw of the coil and remove the coil Detach the welded parts of 4 way valve and pipe How to remove the expansion expansion valve valve Perform work of item 1 2 Remove the electrical parts Expansion from item 3 ads Remove the coils Detach the welded parts of expansion valves and pipes gt Model YNO36GMFI16M4D a T uu MES How to remove the panel 4 Panel plate plate Screws of top cover 1 Stop operation of F the air conditioner and turn OFF the power breaker HN M M Screws of right front side panel Screws of top cover Remove the screws of top 1 cover remove the top cover 8 screws Remove the screws of right C m P j Screws of right front side panel and remove the right fron
58. s connected from PCB and other parts Connectors CN13 T A B C temp sensor 2p 2p 2p white CN18 T3 T4 temp sensor 2p 2p white CN21 Tdischarge temp sensor 2p white CN28 CN26 CN25 Electronic expansive valve A B C 6p 6p 6p red red red CN31 CN29 CN27 S A S B S C 3p 3p 3p white white white Wires CNG CN 9 4 way valve blue blue 4 Compressor CN7 CN10 Crankcase heating cable red red CN11 CN12 Fan capacitor yellow yellow CN1 L IN red CN2 N IN black 5 Disconnect the grounding wires yellow green 6 Remove the PCB board How to remove the compressor 1 Perform work of item 1 2 3 2 Remove the electrical control box and partition plate Extract refrigerant gas Remove the sound insulation material and crankcase heating cable Remove terminal cover of compressor and disconnect wires of compressor thermo and compressor from the terminal Remove the discharge pipe and suction pipe with a burner Remove the hex nuts and washers fixing the compressor to bottom plate Lift the compressor 5 Reactor 2 How to remove the reactor 1 Perform work of item 1 2 Remove two screws of cover of inductance and remove the cover of inductance Disconnect two pieces of connection wirings between reactor and capacitor and connection wirings between reactor and rectifier 4 Remove two screws of each reactor and remove the
59. s of expansion valves and pipes 10 Exploded Views Available under a separate document file
60. s of the piping If bubbles exist the pipes have leakage Additional refrigerant charge eau charged for total pipe length 22 5 750 30 100ft Additional 15g per 15g per 15 x length refrigerant Additional Additional for all rooms charge Meter Meter 30 OZ 0 16 Ozs per 0 16 Ozs per 0 16 Ozs per Additional Additional Additional Foot Foot Foot Caution Q Refrigerant pipe diameter differs according to indoor unit connected When extending the pipes refer to the tables below Evacuation using a vacuum pump Indoor unit Liquid side Outdoor unit 2222 T Two valve Close el ya _ Gas side f L Eu Three way valve al Ts Close a Compound TS Pressure L q q Handle LO 9 0 TT T Handle Hi Charge hose a Charge hose Vacuum pump Vacuum pump Completely tighten the flare nuts of the indoor and outdoor units confirm that both the 2 way and 3 way valves are set to the fully closed position Connect the low side hose of the charging manifold set to the 3 way valve s gas service port Connect the Middle hose of the charging manifold set to the vacuum pump Fully open the Low side valve of the charging manifold set Operate the vacuum pump to evacuate Make evacuation for 30 minutes and check whether the pressure gauge indicates as low as 0 1Mpa 14 5Psi If the meter does not indicate 0 1Mpa 14 5Psi after
61. t VVVVNV t rj temp sensor CAPILIARY TUBE AJ HEAT EXCHANGE V EVAPORATOR Room EXCHANGE temp sensor i recat CONDENSER T2B A Evaporator T2 Evaporator 0 GAS VALVE A temp sensor outlet temp sensor 152 U dw middle Aa Lan i NX 4 VALVE b px T2B B T ZS i S GAS VALVE 2j eL lt N 4 Accumulator f oT5 Discharge 7 temp sensor Compressor COOLING HEATING 5 2 Refrigeration circuit drawing of inverter triple zone 3 zones INDOOR OUTDOOR LIQUID VALVE A eee KY KI A TITT N gt UJUUUV EXV B CAPILIARY B LIQUID VALVE B T GHEGIGVAEVE V ee eps FO d N po 00000 4 00000 EXV CAPILIARY C y Is LIQUID VALVE C Zl Condenser See oda LTT a gt 09 7000007 temp sensor EXCH V V HEAT EXCHANGE V EVAPORATOR 111 Room TeAmbientD EXCHANGE temp sensor CONDENSER T2B A Evaporator GAS VALVE A temp sensor outlet T2 Evaporator 0 40 gt temp sensor a AN middle T2B B i INE NL COSME Be Y A 4 WAY VALVE we X Ege m LN GAS VALVE C p dames Accumulator A 4T5 Disch AK 4 Nj ISC arge 77 temp sensor COOLING Compressor 4 HEATING 5 3 Refrigeration circuit drawing of inverter quad zone 4 zones INDOOR OUTDOOR EXV A CAPILIARY A L
62. t side panel 2 screws Y E Remove the screws of front 1 panel and remove the E front panel 10 screws Remove the screws of big handle and remove the big handle 4 screws Remove two screws of terminal board two screws of water collector and thirteen screws of right rear panel and remove the right rear panel TIL Screws of big handle crews of right rear panel Screws of water collector 2 Fan assy Electrical parts How to remove the fan ass y 1 Remove the top cover right front side panel and front panel from item 1 step 1 4 2 Remove the hex nut fixing the fan Remove the fan Remove the electrical control box cover after remove 5 screws 5 Disconnect the fan motor connector CN3 5p white on the PCB board 6 Remove the fan motor after unfastening three fixing Screws How to remove the electrical parts 1 Perform work of item 1 2 2 Disconnect the following connection wires and connectors on the IPM P red connected to P2 on PCB N blue connected to P4 on PCB UVW blue red black connected to compressor CN1 5p white connected to CN22 on PCB CN202 2p white connected to CN8 on PFC UVW to compressor 3 Remove the IPM board N CN202 after removing the two ge T
63. whether the refrigerant is leak Yes Stop leaking and add refrigerant No Check whether the wiring connection is right between compressor discharge temp No sensor and PCB according to wiring diagrams Correct the wiring connection EE v Yes Y 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 Replace the compressor discharge temp sensor y Yes v Replace outdoor main board 5 Trouble is solved 9 4 2 6 PO Temperature protection of compressor top error diagnosis and solution Only for YN018GMFI16M2D and YN027GMFI16M3D 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 is good Whether compressor operates No Reconnect and retest Yes Yes Whether refrigerant circulation volume is normal Whether protector is normal If protector is normal resistance 0 No Replace the protector No Y Charge refrigerant Yes Y Replace the outdoor main PCB
64. ws of handle 4 screws pane P front panel Remove two screws of ks Fs terminal board two screws 1 1 of water collector and i twelve screws of right rear panel and remove the right rear panel um Screws of big handle crews of right rear panel water collector Screws of 7 terminal board 2 Fan assy How to remove the fan ass y 1 Remove the top cover right front side panel and front panel from item 1 step 1 4 2 Remove the hex nut fixing the fan 3 Remove the fan 4 Remove the two fixing screws and then open the electrical control box cover 5 Disconnect the fan motor connector CN3 5p white from the PCB board 6 Remove the fan motor after unfastening six fixing screws Note There are two kinds of screws Please pay attention to it when install the fan motor How to remove the electrical Electrical parts parts 1 Perform work of item 1 2 i ls 2 Disconnect following connection wires and IPM board PCB board connectors between IPM and PCB P red connected to P2 on PCB CN1 N UVW tocompressor N blue connected to P4 on PCB UVW blue red black connected to compressor CN1 5p white connected to CN22 on PCB 3 Remove the IPM board after removing the two SCrews Disconnect the connectors Screws of
65. x 2 pu Replace indoor or outdoor PCB NO Replace the sensor 9 4 2 3 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 faulty Trouble shooting Voltage protection v Check the voltage of outdoor unit power supply whether the voltage between L L1 and N L2 is about 187 253VAC v Check the power supply Check whether the voltage of IPM board P and N is normal DC277 356V for 18 27KBtu h DC277 410V for 36KBtu h Replace bridge rectifiers and then check whether the system can run normally Yes Yes No 4 v Replace IPM board and then check whether the Yes gt system can run normally No Replace outdoor main board Trouble is solved IPM for dual trio zone bridge rectifier IPM for quas zone RANGE REL Hz Remark Measure the DC voltage between and port The normal value should be 190V 250V 9 4 2 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 s
66. x345x965 33 27x12 6x27 56 38 98 13 58 37 99 38 98 13 58 37 99 965 395 755 1120 435 1100 1120 435 1100 37 99 15 55 29 72 44 09 17 13 43 31 44 09 17 13 43 31 57 60 5 86 90 77181 125 66 133 38 189 6 198 42 169 76 178 57 410 51 410 71 410 95 us 550 340 550 340 550 340 2 X 6 35 9 52 1 4 3 8 3 X 6 35 9 52 1 4 3 8 4 X 6 35 9 52 1 4 3 8 4 x 6 35 09 52 1 4 3 8 Model YDK70 6FB Brand Welling e 166 105 Input RLA 0 74 Outdoor fan motor 0 95 56 76 56 76 Winding Resistance Capacitor Speed 800 600 ol x S gt Outdoor air flow m3 h O Outdoor noise level dB A 845x320x700 Dimension W D H Dimension W D H 33 27x12 6x27 56 Packing W D H 965x395x755 Outdoor unit Packing W D H 37 99x15 55x29 72 Net Gross weight 53 5 57 Net Gross weight 117 95 125 66 Refrigerant type Design pressure N Liquid side Gas side 45 Max length for all rooms 148 197 Max length for all rooms 197 N pey eo length for one indoor unit N Max length for one indoor unit e eo Refrigerant piping e Max height difference between indoor and outdoor unit AR oO O O X e eo Max height difference between indoor units Max height dif

OUTDOOR UNITS Service Manual - PRE 2014

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