SERVICE MANUAL
Contents
1. Unit Discharge temp sensor table 20 542 7 20 68 66 60 13 59 100 3 702 19 511 9 21 65 62 61 13 11 101 3 595 18 483 22 62 73 62 12 65 102 3 492 17 455 9 23 59 98 63 12 21 103 3 392 16 430 5 24 57 37 64 11 79 104 3 296 15 406 7 25 54 89 65 11 38 105 3 203 14 384 3 26 52 53 66 10 99 106 3 113 13 363 3 27 50 28 67 10 61 107 3 025 12 343 6 28 48 14 68 10 25 108 2 941 11 325 1 29 46 11 69 9 902 109 2 86 10 307 7 30 44 17 70 9 569 110 2 781 9 291 3 31 42 33 71 9 248 11 2 704 8 275 9 32 40 57 72 8 94 112 2 63 7 261 4 33 38 89 73 8 643 113 2 559 6 247 8 34 37 3 74 8 358 114 2 489 5 234 9 35 35 78 75 8 084 115 2422 4 222 8 36 34 32 76 7 82 116 2 357 3 2114 37 32 94 77 7 566 117 2 294 2 200 7 38 31 62 78 7 321 118 2 233 1 190 5 39 30 36 79 7 086 119 2 174 0 180 9 40 29 15 80 6 859 120 2 117 1 171 9 41 28 81 6 641 121 2 061 2 163 3 42 26 9 82 6 43 122 2 007 3 155 2 43 25 86 83 6 228 123 1 955 4 147 6 44 24 85 84 6 033 124 1 905 5 140 4 45 23 89 85 5 844 125 1 856 6 133 5 46 22 89 86 5 663 126 1 808 7 127 1 47 22 1 87 5 488 127 1 762 8 121 48 21 26 88 5 32 128 1 717 9 115 2 49 20 46 89 5 157 129 1 674 10 109 8 50 19 69 90 5 130 1 632 11 104 6 51 18 96 91 4 849 12 99 69 52 18 26 92 4 703 13 95 05 53 17 58 93 4 562 14 90 66 54 16 94 94 4 426 15 86 49 55 16 32 95 4 294 B 25 50 3950K 16 82 54 56 15 73 96 4 167 17 78 79 57 15 16 97 4 045 R 90 C 5KON 3 18 75 24 58 14 62 98 3 927 19 71 86 59 142. Procedure 1 Connect the charge hose to the charging cylinder open the 2 way valve and the 3 way valve Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder If the refrigerant is RA10A make the cylinder bottom up 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 the electronic scale and record the weight 4 Open the valves Low side on the charge set and charge the system with liquid refrigerant If the system cannot be charge with the specified amount of refrigerant or can be charged with a little at a time approximately 150g each time operating the air conditioner in the cooling cycle however one time is not sufficient wait approximately 1 minute and then repeat the procedure 5 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 Mounted the valve stem caps and the service port Use torque wrench to tighten the service port cap to a torque of 18N m Be sure to check for gas leakage 19 8 Electronic control function 8 1 Abbrevia
3. SERVICE MANUAL DC INVERTER MULTI ZONE DUAL 2 TRIPLE 3 and QUAD 4 CIRCUIT MULTI SPLIT OUTDOOR UNITS HEAT PUMP YN018GMF116M2D 2 Zone YN027GMFI16M3D 3 Zone YNO36GMFI16M4D 4 Zone DC MULTI OUTDOOR UNITS CONTENTS 1 General information of Outdoor 2 2 5 1 MERE 3 DIMONSIONS e C M 4 4 Wiring Diagram 5 Refrigeration Cycle Diagram 0 07 8 6 Indoor units combination 10 T Installation 00 11 8 Electronic control 20 9 65 0 incen etie rre 28 1 General information of Outdoor Units Model name Dimension mm in Compressor YNO18GMFI16M2D 845x320x700 33 3x12 6x27 6 DA130S1C 20FZ YNO27GMF116M3D 845x320x700 33 3x12 6x27 6 DA150S1C 20FZ YNO36GMFI16M4D 990x345x965 39x13 6x38 TNB306FPGMC L 2 Features Outdoor unit Power relay control Low noise air flow system Hydrophilic aluminum fin The hydrophilic fin can improve the heating efficiency at operation mode 4 way valve control It is only operated in the heating operation mode except defrosting operation Anti rust cabinet Valve protection cover It protects the valves and preven
4. The following items from 6 4 1 to 6 4 6 are for the explanation of the point check functions 8 4 1 Frequency of compressor Display Frequency of compressor Hz 30 30 Stand by 60 60 8 4 2 Running mode Display Corresponding mode 0 Off 1 Cooling mode 2 Heating mode 8 4 3 Capacity demand Cooling mode Capacity 2000 2 2000 2 3000 3 4500 5 5000 5 5500 6 6100 7 7000 7 7500 8 27500 500 500 800 000 500 100 000 500 000 Correspondi 1 2 3 4 5 6 7 8 9 gt 10 ng Code Heating mode Capacity 2000 2 2000 2 3000 3 4500 5 5500 6 6100 7 6100 7 7000 7 7500 8 gt 8000 500 500 800 000 100 000 000 500 000 Correspondin 1 2 3 4 5 6 7 8 9 10 gt 11 9 Note The capacity is just for reference 8 4 4Number of indoor unit Display Number of indoor unit 1 1 2 2 3 3 4 4 8 4 5 Opening degree of electronic expansion valve Actual opening degree equals the display data divided 8 8 5 Protection 8 5 1 Three minutes delay at restart for compressor 8 5 2 Temperature protection of compressor discharge When the compressor discharge temp is getting higher the running frequency will be limited as below rules If 102 T5 115 decrease the frequency to the lower level every 2 minutes till to F1 If T5 gt 115 for 10 seconds the co
5. 5 Refrigeration Cycle Diagram 5 1Refrigeration circuit drawing of inverter dual zone INDOOR EXV A CAPILIARY A LIQUIDVALVE 4 7 lt gt EXV B CAPILIARY LIQUID VALVE B 4 HEAT EXCHANGE RU EVAPORATOR P emp sensor T2 Evaporator a GAS VALVE A temp sensor OUTDOOR CHECK VALVE 4 gt CAPILIARY TUBE Ambient a temp sensor Y AWAY VALVE GAS VALVE B 0 47 Accumulator Discharge gt temp sensor Compressor 5 2 Refrigeration circuit drawing of inverter tri zone INDOOR EXV A CAPILIARY A LIQUID VALVE A 9 EXV CAPILIARY B UQUDVANEB 4 560 709 EXV CAPILIARY C LIQUID VALVE HEAT EXCHANGE EVAPORATOR eO ER temp sensor T2Evaporatort GAS VALVE A 1 temp sensor M I GAS VALVE d OUTDOOR CHECK VALVE 4 s CAPILIARY TUBE T4 Ambient n temp sensor 4 WAY VALVE 176 Discharge temp sensor Compressor 13 YO Condenser m temp sensor HEAT EXCHANGE CONDENSER lt COOLING lt HEATING 4 Condenser ntemp sensor HEAT EXCHANGE CONDENSER COOLING 4 HEATING 5 3 Refrigeration circuit drawing of inverter quad zone INDOOR HEAT EXCHANGE EVAPORATOR Ti Room temp sensor T2 Evaporator 0 temp sensor OUTDOOR EXV A CAPILIARY A LIQUID VALVE 4 EXVB CAPILIARY B LIQUID VALVE Bg
6. 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 Voltage protection Temperature protection of compressor top Mode conflict batt di AR di di RL x gt x x gt ee yi x gt x Inverter compressor drive protection flash at 2 5Hz light X extinguished Ceiling Concealed Duct Type Display Operation De frost LED STATUS digital tube Open or short circuit of T1 EO temperature sensor Open or short circuit of T2 E1 temperature sensor Indoor outdoor units E2 communication error Full water malfunction Indoor EEPROM malfunction EA IPM module protection ES Open or short circuit of T3 or T4 E6 0 1 2 temperature sensor or outdoor EEPROM malfunction 4 6 Voltage protection 5 Temperature protection of PO compressor top Inverter compressor drive protection Mode conflict flash at 2 5Hz light X extinguished Oflash at 1Hz 9 2 Outdoor unit error code explanation Display digital tube LED STATUS IDU Error A5 Duct Outdoor EEPROM malfunction E6 No A Indoor unit coil outlet temp sensor or connector of sensor is defective No
7. w CHECK VALVE EXV C CAPILIARY C 4 LIQUID VALVE 4 CAPILIARY TUBE LIQUID VALVE D Ambient o temp sensor GAS VALVE A 4 GAS VALVE B 5 14 AWAY VALVE GAS VALVE lAcoumulator S gt gt pressure H swich GAS VALVE D ats Discharge lt temp sensor Uh Compressor Condenser p temp sensor HEAT EXCHANGE CONDENSER lt COOLING lt HEATING 6 Indoor units combination 6 1 Indoor unit combination for YN018GMFI16M2D Comb Combinations Unit A Unit B 9k Duallxl jak 18k 9k 9k Dual 1x2 ak 12k 12k 12k 6 2Indoor unit combination for YNO27GMFI16M3D Tan Combinations UnitA UnitB UnitC 9k TR 1x1 18k 9k 9k 9k 12k TRI 1x2 18k 12k 12k 18k 9k 9k 9k TRI x3 9k 12k 9k 12k 12k 6 3Indoor unit combination for YNO36GMFI16M4D Comb Combinations Unit A Unit B Unit C Unit D 9k QUA 1x1 12k 18k 9k 9k 9k 12k QUA 1x2 18k 12k 12k 12k 18k 18k 18k 9k 9k 9k 9k 9k 12k 9k 9k 18k 9k 12k 12k QUA 1x3 ak 12k 18k 9k 18k 18k 12k 12k 12k 12k 12k 18k 12k 18k 18k 9k 9k 9k 9k 9k 9k 9k 12k 9k 9k 9k 18k 9k 9k 12k 12k QUA 1x4 ak 9k 12k 18k 9k 12k 12k
8. DC motor voltage input and output NO Color Signal Voltage 1 Vs Vm 280V 380V 00000 2 EN EN 3 Black GND ov 4 White Vcc 14 17 5V 5 Yellow Vsp 0 5 6 6 14 17 5 9 3 1 5 Indoor fan speed has been out of control AC fan motor Shut off the power supply N and turn it on 1 minute N later Isit stil displaying NO The unit operates normally the error code Yes Tre off the power supply rotate the cross fan by hand Does it Disassemblythe N connection between fan and motor check if Z NO gt Replace the bearing the bearing is normal rotate properly Yes Yes Check the wires of fan motor Are all the Correct the connections Replace indoor fan motor connections good x Yes Check resistance value of indoor fan motor is it normal No Yes Replace indoor PCB 9 3 1 6 Open or short circuit of temperature sensor oN Check the connections between temperature sensor and PCB Are No Correct the connections N the connections good Check the resistance value of the sensor via Appendix 1 7 Is it normal Yes Replace indoor or outdoor PCB Y Replace the s
9. Display digital tube LED STATUS code E0 Indoor EEPROM malfunction E1 Indoor outdoor units communication error E2 Zero crossing signal error Indoor fan speed has been out of control Open circuit or short circuit of outdoor temperature sensor or outdoor E0 E1 E2 5 EEPROM malfunction 4 6 E6 Open circuit or short circuit of T1 or T2 temperature sensor PO IPM module protection or IGBT over strong current protection P4 P1 Voltage protection E5 P2 Temperature protection of compressor top PO P1 P2 P3 Outdoor temp too low protection Optional for some models P4 Inverter compressor drive protection P5 Mode conflict Floor Console Models Operation De frost LED STATUS x Open or short circuit of T1 temperature sensor Open or short circuit of T2 temperature sensor Indoor outdoor units communication error Indoor EEPROM malfunction IPM module protection Open or short circuit of T3 or T4 temperature sensor Temperature protection of compressor top Inverter compressor drive protection Mode conflict e x x x x x x x x x Indoor fan speed has been out of control flash at 5Hz light X extinguished Oflash at 0 5Hz Cassette Ceiling amp Floor Models Operation De frost LED STATUS X Open or short circuit of T1 temperature sensor
10. between L L1 and N L2 is about 220 240VAC CL Check whether the voltage of IPM board P and N is normal DC277 356V for 18 27KBtu h DC277 410V for 36KBtu h No Replace bridge rectifiers and then check whether the system can run normally Yes No Replace IPM board and then check whether the system can run normally No Replace outdoor main board is solved 9 3 2 3 Communication malfunction between IPM board and outdoor main board ODU E7 Communication malfunction between IPM board and outdoor main board N N 15 atleastone LEDin N N the IPM board light No MM N Check the signal wire between the IPM module and the main board is it connected good No Reconnect and retry Is error still display No Y No N Replace IPM board and N then check whether the jr Yes N system can run normally N EP No a Wi 7 Replace outdoor main N board and then check N whether the system can run normally Yes a No Replace the electric control box i N N I Trouble is solved N 9 3 2 4 Temperature protection of compressor discharge ODU Temperature protection of compressor discharge Check whether the 1 comp
11. 09 99 3 812 Appendix 3 1 Reference voltage data Rectifier Input 220 230V AC output 310V DC b Inverter module U V W 3ph Result U V 60 150V AC U W 60 150V AC V W 60 150V AC P N DC 310V 2 Check the Diode Bridge component In wiring diagram rectifier Remark If this part is abnormal the LED will not light O LA Multi meter Result Forward Resistance Backward Resistance Infinite Infinite 1 7M ohm Infinite 71 7M ohm Infinite Appendix 4 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 Appendix 5 Spec Outdoor unit Model 1x2 1x3 1x4 Compressor DA130S1C 20FZ DA150S1C 20FZ TNB306FPGMC L Outdoor fan motor YDK70 6FB YDK70 6FB YDK180 8GB Indoor unit Model 9k Wall 12k Wall 18k Wall Indoor fan motor RPG20B RPG20B RPG28H Model 9k Wall 12k Wall 18k Wall Indoor fan motor RPG20B RPG20B RPG28H Model 12k A5 18k AS Indoor fan motor I YSK27 4G YSK68 4B Model I 12k Cassette 18k Cassette Indoor fan motor I YDK45 6B YDK45 6B Model 1 12k Ceiling amp Floor 18k Ceiling amp Floor Indoor fan motor YSK25 6L YSK25 6L 1 Compressor checking Measure the resistanc
12. 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 Open or short circuit of outdoor unit temperature sensor Voltage protection Communication malfunction between IPM board and outdoor main board Temperature protection of compressor discharge compressor top For M4OC 36HRDN1 M it only means Temperature protection of compressor discharge High pressure protection Only for M40C 36HRDN1 M Low pressure protection Only for M40C 36HRDN1 M Current protection of compressor IPM module protection High temperature protection of condenser Inverter compressor drive protection PFC module protection Only for M40C 36HRDN1 M For YN027GMFI16M3D and YN036GMFI16M4D models Display LED STATUS EO Outdoor EEPROM malfunction E2 Indoor outdoor units communication error Communication malfunction between IPM board and outdoor main board E4 Open or short circuit of outdoor unit temperature sensor E5 Voltage protection E6 PFC module protection F1 No A Indoor unit coil outlet temp sensor or connector of sensor is defective F2 No B Indoor unit coil outlet temp sensor or connector of sensor is defective F3 No C Indoor unit coil outlet
13. frequency is lower than COOL_F4 the frequency will not be limited After 105 of the compressor start if the current gt ICOOL the AC will display the failure for 30 seconds Heating mode Current frequency Current limit value A Frequency limit Hz HEAT_F16 IHEATLMT12 Decrease the frequency to HEAT_F4 and run at HEAT_F4 for 3 minutes HEAT_F15 IHEATLMT11 HEAT_F14 IHEATLMT10 After that the frequency will be adjusted according to the capacity demand and rise to the upper level every HEAT_F13 IHEATLMT9 3 minutes HEAT F12 IHEATLMT8 When the gt via capacity demand HEAT F11 IHEATLMT7 HEAT F10 IHEATLMT6 HEAT F9 IHEATLMT5 HEAT F8 IHEATLMT4 HEAT F7 IHEATLMT3 HEAT F6 IHEATLMT2 HEAT F5 IHEATLMT1 If the current frequency is lower than HEAT the frequency will not be limited After 10s of the compressor start if the current gt IHEAT the AC will display the failure for 30 seconds and stop The AC will restart 3 minutes later 8 5 5 Indoor outdoor units communication protection If the indoor units can not receive the feedback signal from the outdoor units for 2 minutes the AC will stop and display the failure 8 5 6 High condenser coil temp protection When T3565 for 3 seconds the compressor will stop while the indoor fan and outdoor fan will continue When T3 52 the protection will release and the compressor will resta
14. have undesirable effects as below Pressure in the system rises Operating current rises Cooling or heating efficiency drops Moisture in the refrigerant circuit may freeze and block capillary tubing Water may lead to corrosion of parts in the refrigerant system Therefore the indoor units and the pipes between indoor and outdoor units must be leak tested and evacuated to remove gas and moisture from the system Gas leak check Soap water method Apply soap water or a liquid neutral detergent on the indoor unit connections or outdoor unit connections by a soft brush to check for leakage of the connecting points of the piping If bubbles come out the pipes have leakage 1 Air purging with vacuum pump Indoor unit _ Liquid side Outdoor unit 22 Two way valve Close Gas side Three way valve Manifold valve Compound meter 2 1 Pressure 0 1 gauge Handelo Handle Hi Charge hose 7 Charge hose Vacuum pump Vacuum pump 1 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 closed position 2 Connect the charge hose with the push pin of handle lo to the 3 way valves gas service port 3 Connect the charge hose of handle hi connection to the vacuum pump 4 Fully open the handle Lo of the manifold valve 5 Operate the vacuum pump to evacuate 6 Make evacuation for 30 minut
15. temp sensor or connector of sensor is defective F4 No D Indoor unit coil outlet temp sensor or connector of sensor is defective P1 High pressure protection P2 Low pressure protection P3 Current protection of compressor P4 Temperature protection of compressor discharge P5 High temperature protection of condenser P6 IPM module protection 9 3Trouble shooting 9 3 1 Indoor unit trouble shooting 9 3 1 1 Indoor EEPROM malfunction 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 PCB well Yes i Replace the indoor PCB EEPROM a read only memory whose contents can be erased and reprogrammed using a pulsed voltage EERROM chip may be solid for some models 9 3 1 2 Indoor outdoor unit communication error Indoor outdoor units communication error 1 Start Power off then Poweron N the by the Breaker reconnect the power wire Is still displaying the error code Yes Check wiring on the outdoor and indoor terminal follow the wiring iagram Is all connecting correct M No No Reconnect the wiring Reconnect the wiring on all indoor unit by remote con
16. the air use a torque wrench to tighten the flare nut on the 2 way valve 4 Check the gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant 13 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 3 to 0 5 Mpa 6 Disconnect the charge set and the charging cylinder and set the 2 way and 3 way valves to the open position Be sure to use a hexagonal wrench to operate the valve stems 7 Mount the valve stems nuts 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 leakage 3 Adding the refrigerant if the pipe length gt 5m Indoor unit Liquid side C Outdoor unt 2 way valve f Open _ C Gas sido XR 3 way valve Open y Charging cylinder SER mec Procedure 1 Connect the charge hose to the charging cylinder open the 2 way valve and the 3 way valve Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder If the refrigerant is RA10A make the cylinder bottom up to ensure the 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
17. 12k 9k 12k 12k 18k 12k 12k 12k 12k 12k 12k 12k 18k 10 7 Installation Details 7 1 Wrench torque sheet for installation Outside diameter Torque Additional tightening torque mm inch N cm N cm 6 35 1 4 1500 153kgf cm 1600 163kgf cm 9 52 3 8 2500 255kgf cm 2600 265kgf cm 127 12 3500 357kgf cm 3600 367kgf cm 7 2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet For power line Unit AWG Dual zone 18K outdoor unit 14 Tri zone 27K outdoor unit 14 Quad zone 36K outdoor unit 12 For indoor unit and outdoor unit connection line 16AWG is ok for all 7 3 Pipe length and the elevation Pipe size Standard Max Max Additional Unit length Elevation Length refrigerant Gas Liquid m B m A m g m 9K 3 8 09 52 1 4 66 35 20 5 10 15 0 212 12K 18K 1 2 612 7 1 4 06 35 16 44 33ft 49 28 ozs ft Dual zone m Tri zone m Quad zone m Total length for all rooms 30 98ft 45 150ft 60 200ft Indoor unit indoor unit 6 Outdoor unit Caution Capacity test is based on standard length and maximum allowance length is based on reliability Oil trap should be installed per 3 5 meters 11 7 4 Installation for the first time Air and moisture in the refrigerant system
18. 64691 110 0 47256 9 58 7079 31 7 62411 71 1 59068 111 0 45957 8 56 3694 32 7 29464 72 1 53668 112 0 44699 7 52 2438 33 6 98142 73 1 48481 113 0 43482 6 49 3161 34 6 68355 74 1 43498 114 0 42304 5 46 5725 35 6 40021 75 1 38703 115 0 41164 4 44 0000 36 6 13059 76 1 34105 116 0 40060 3 41 5878 37 5 87359 77 1 29078 117 0 38991 2 39 8239 38 5 62961 78 1 25423 118 0 37956 1 37 1988 39 5 39689 79 1 21330 119 0 36954 0 35 2024 40 5 17519 80 1 17393 120 0 35982 1 33 3269 41 4 96392 81 1 13604 121 0 35042 2 31 5635 42 4 76253 82 1 09958 122 0 3413 3 29 9058 43 4 57050 83 1 06448 123 0 33246 4 28 3459 44 4 38736 84 1 03069 124 0 32390 5 26 8778 45 4 21263 85 0 99815 125 0 31559 6 25 4954 46 4 04589 86 0 96681 126 0 30754 7 24 1932 47 3 88673 87 0 93662 127 0 29974 8 22 5662 48 3 73476 88 0 90753 128 0 29216 9 21 8094 49 3 58962 89 0 87950 129 0 28482 10 20 7184 50 3 45097 90 0 85248 130 0 27770 11 19 6891 51 3 31847 91 0 82643 131 0 27078 12 18 7177 52 3 19183 92 0 80132 132 0 26408 13 17 8005 53 3 07075 93 0 77709 133 0 25757 14 16 9341 54 2 95896 94 0 75373 134 0 25125 15 16 1156 55 2 84421 95 0 73119 135 0 24512 16 15 3418 56 2 73823 96 0 70944 136 0 23916 17 14 6181 57 2 63682 97 0 68844 137 0 23338 18 13 9180 58 2 53973 98 0 66818 138 0 22776 19 13 2631 59 2 44677 99 0 64862 139 0 22231 2
19. N X main board and the normal or not p module is connected tightly FA gt ME M Check whether the voltage range of P N on IPM X module is normal 0 277 gt Yes gt Replace the outdoor main board Yes N 356V for 18 27KBtu h N DC277 410V for 36KBtu h whether the N inductance of PFC module N is good If the inductance is j N0o Replace the inductance N good the resistance of the two ports is 0 Yes Replace the module c cC y Trouble is solved Xe 3 9 3 2 12 Inverter compressor drive protection ODU P7 The trouble shooting is same with one of IPM module protection Appendix 1 Temperature Sensor Resistance Value Table C K K Ohm K Ohm K Ohm K Ohm 20 115 266 20 12 6431 60 2 35774 100 0 62973 19 108 146 21 12 0561 61 2 27249 101 0 61148 18 101 517 22 11 5000 62 2 19073 102 0 59386 17 96 3423 23 10 9731 63 2 11241 103 0 57683 16 89 5865 24 10 4736 64 2 03732 104 0 56038 15 84 2190 25 10 000 65 1 96532 105 0 54448 14 79 3110 26 9 55074 66 1 89627 106 0 52912 13 74 5360 27 9 12445 67 1 83003 107 0 51426 12 70 1698 28 8 71983 68 1 76647 108 0 49989 11 66 0898 29 8 33566 69 1 70547 109 0 48600 10 62 2756 30 7 97078 70 1
20. NSR CD em i kan E ks IPM BOARD i i ENE IS wes 8 i 5 por MAIN BOU i m 2 i i weg i i i SB 5 6 em m w y i OBE mamam Q i D i e ve 55 855 i SOU vey We g i ia SENS H COMPRESSOR cel ce i NC i i i wow m 4 3 YNO36GMFI16M3D 202057190160 COMPRESSOR REUS ELECTRONIC DANSITE BZASNE tan itn cues PFC MODULE nu sum a a FAN CAPACITOR OPTIONAL 202057190185 nn C LEC Rec ELES RONE ELEC TRONIC ELE RONE PAS NE EIMS NE DINE we ww HeaTER 1 NIV OPTIONAL TE
21. close it quickly 4 Set the 2 way valve to the close position 5 Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0 1MPa 6 Set the 3 way valve to the closed position immediately Do this quickly so that the gauge ends up indicating 0 3 to 0 5Mpa 16 Disconnect the charge set and tighten the 2 way and 3 way valve s stem nuts Use a torque wrench to tighten the 3 way valves service port cap to a torque of 1 8 kgf m Be sure to check for gas leakage 2 Air purging by the refrigerant Indoor unit NZZNN Liquid side Outdoor unit Gas side i C open fr 9 Close S G Charging CLOSE Sa cylinder Procedure 1 Confirm that both the 2 way and 3 way valves are set to the closed position 2 Connect the charge 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 valves on the charging cylinder and the charge 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 3 times After purging the air use a torque wrench to tighten the flare nut on the 2 way valve 4 Check the gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close the valve on the charg
22. cy Hz Current limit value A Frequency limit HEAT 12 IHEATLMT8 Decrease the frequency to HEAT F4 and run at HEAT F4 for 3 minutes HEAT_F11 IHEATLMT7 HEAT_F10 6 After that the frequency will be adjusted according to the HEAT FO IMERTUMT capacity demand and rise to the upper level every 3 minutes HEAT F8 IHEATLMT4 When the frequency gt Heat_F4 via capacity demand HEAT F7 IHEATLMT3 HEAT F6 IHEATLMT2 HEAT F5 IHEATLMT1 If the current frequency is lower than HEAT F4 the frequency will not be limited After 10s of the compressor start if the current gt IHEAT the AC will display the failure for 30 seconds and stop The AC will restart 3 minutes later For M3OC 27HRDN1 M 220057100510 M4OC 36HRFN1 M 220057100530 model Cooling mode Frequency limit Decrease the frequency to COOL F4 and run at COOL for 3 minutes After that the frequency will be adjusted according to the capacity demand and rise to the upper level every 3 minutes When the frequency COOL via capacity demand Current frequency Current limit value A Hz COOL_F16 ICOOLLMT12 COOL_F15 ICOOLLMT11 COOL_F14 ICOOLLMT10 COOL_F13 ICOOLLMT9 COOL_F12 ICOOLLMT8 COOL_F11 ICOOLLMT7 COOL_F10 ICOOLLMT6 COOL_F9 ICOOLLMT5 COOL_F8 ICOOLLMT4 COOL_F7 ICOOLLMT3 COOL_F6 ICOOLLMT2 COOL_F5 ICOOLLMT1 and stop The AC will restart 3 minutes later If the current
23. divide 8 17 Power supply of outdoor unit AD data AD data 472 255 actual data 18 Indoor unit number The indoor unit can communicate with outdoor unit well 19 The last error or protection code 00 means no malfunction 20 frequency value Actual data 21 Ambient temp of 1 indoor unit Actual data 22 Condenser pipe temp of 1 indoor unit Actual data 23 Ambient temp of 2 indoor unit Actual data 24 Condenser pipe temp of 2 indoor unit Actual data 25 Ambient temp of 3 indoor unit Actual data 26 Condenser pipe temp of 3 indoor unit Actual data 27 Ambient temp of 4 indoor unit Actual data 28 Condenser pipe temp of 4 indoor unit Actual data 29 Check point over For YN027GMFI16M3D and YN036GMFII16M4D models Display Remark 1 No of indoor units in good connection Actual data 2 Outdoor unit running mode code Off 0 Cooling 2 Heating 3 Forced cooling 4 3 A indoor unit capacity 4 B indoor unit capacity 5 C indoor unit capacity The capacity unit is horse power If the indoor unit is not connected the digital display tube will show 6 D indoor unit capacity 7 E indoor unit capacity 8 A Indoor unit capacity demand code 9 B Indoor unit capacity demand code 10 C Indoor unit capacity demand code 11 D Indoor unit capacity demand code 12 E Indoor unit capacity demand code 13 Total indoor units amendatory capacity demand code 14 The frequency corresponding to the total indoor units amendatory capacity demand 15 The frequency af
24. e connecting line or reactor or replace the module for M40C 36HRDN1 M Trouble is solved N 9 3 2 10 High temperature protection of condenser ODU P6 When outdoor pipe temperature is more than 65 the unit will stop and unit runs again when outdoor pipe temperature is less than 52 High temperature protection of condenser Check whether the condenser temperature is yon 65 7 Yes Judge 1 Check whether the X outdoor ambient temperature is higher than 50 C 7 Judge 2 Check whether the N heat exchanger is dirty No Replace the temperature sensor No A Check whether the resistance of condenser temp sensor is correct Yes Replace outdoor main board refer to the Appendix 1 7 ONE v N j Yes Stop the unit Yes Clean the heat exchanger Judge 3 The refrigerant N 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 9 3 2 11 PFC module protection PF Only for YNO36GMFI16M4D PFC module protection E Check whether the N 55 connecting line between N Connect it tightly check
25. e value of each winding by using the tester Input Terminal Blue Blue 4 Red Black Black 3 Red Position Resistance Value DA130S1C 20FZ DA150S1C 20FZ TNB306FPGMC L Blue Red 0 950 20 C 0 950 20 C 0 530 20 C 2 Fan Motor Measure the resistance value of each winding by using the tester Input Terminal Lo Blue 5 Brown Blue Position Resistance Value YDK70 6FB YDK180 8GB YSK27 4G YSK68 4B YDK45 6B YSK25 6L Beinen 5603896 24 50 8 3170 8 1450 8 3450 8 6270 8 20 20 C 20 C 20 C 20 C 20 C Red Vili 760 8 190 8 2520 8 880 8 1500 8 374 30 8 Te oW 20 C 20 20 20 20 20 760 8 190 8 2520 8 880 8 1500 8 374 30 8 20 20 C 20 C 20 C 20 C 20 C Measure the resistance value of each winding by using the tester Input Terminal Red Red 1 L Black 2 White White Black Position Resistance Value RPG20B RPG28H Black Red 3810 8 20 C 183 60 8 20 C White Black 2670 8 20 C 2060 8 20 C
26. ensor 9 3 1 7 Full water malfunction For cassette ceiling amp Floor duct type If the water level switch is inserted well Insert the water level switch well Yes If the water level switch N Yes gt is broken Replace the water level switch No Y If the water pump is 2 the water pump normal Yes Y Check PCB board or replace the indoor main PCB 9 3 1 8 Outdoor temp too low protection Optional for some models N Turn on the unit when outdoor ambient temperature is in normal operation temperature range Check if the outdoor ambient temperature is beyond the normal operation temperature range N No i Replace the outdoor ambient temperature sensor 9 3 2 Outdoor unit trouble shooting 9 3 2 1 Outdoor EEPROM malfunction ODU 0 Outdoor EEPROM malfunction Yes the EEPROM iswelded on PCB replace the directly Otherwise check whether the EEPROM chip plugged PCB well Yes Replace the outdoor main board No Insert the EEPROM well 9 3 2 2 Voltage protection ODU E5 Voltage protection Check the voltage of outdoor unit power supply whether the voltage Check the power supply
27. erating wiring is correct Off On U Blue on 5 off V Red W Black LED 3 Red Power LED 2 Green Self check LED1 Red Operating indicator PIC4 Main board LED when power on and unit pu 5 press 18 times for check how many indoor units connected 9 3 1 3 Zero crossing signal error L Check if the connections and N power supply is normal Yes Indoor PCB is defective Replace indoor PCB Sey Correct the connections Turn on the unit when the power supply is good 9 3 1 4 Indoor fan speed has been out of control DC fan motor Shutoffthe power supply and 8 turn it on 1 minute later Is it N still displaying the error code Np MAD Yes Y N Shut off the power supply rotate the fan by hand Does N it rotate properly ___ ____ _______ Yes Check the wires of fan motor N Are all the connections good Yes Y Check the voltage between port lt 1 6 N is it 310V No Y gt The unit operates normally N Replace indoor fan 0 0 motor Ly No Correct the connections Yes Replace indoor main PCB Is it still displaying the error code
28. es and check whether the compound meter indicates 0 1Mpa If 12 the meter does not indicate 0 1Mpa after pumping 30 minutes it should be pumped 20 minutes more If the pressure can t achieve 0 1Mpa after pumping 50 minutes please check if there are some leakage points Fully close the handle Lo valve of the manifold valve and stop the operation of the vacuum pump Confirm that the gauge needle does not move approximately 5 minutes after turning off the vacuum pump 7 Turn the flare nut of the 3 way valves about 45 counterclockwise for 6 or 7seconds after the gas coming out then tighten the flare nut again Make sure the pressure display in the pressure indicator is a little higher than the atmosphere pressure Then remove the charge hose from the 3 way valve 8 Fully open the 2 way valve and 3 way valve and securely tighten the cap of the 3 way valve 2 Air purging by refrigerant NEAN Liquid side Indoor unit Charging cylinder Procedure 1 Confirm that both the 2 way and 3 way valves are set to the closed position 2 Connect the charge 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 charge 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 3 times After purging
29. g of capillary etc 9 3 2 6 High pressure protection ODU P1 High pressure protection Y Y Judge 1 Whether the wiring N between the high pressure N Only for YNO36GMFI16M4D switch and main control Connect it well board is connected wellor correctly Yes Judge 2 Whether the high pressure protector is broken Y Method Short connect the N high pressure protector socket check whether the Yes Replace high pressure protector N N System can run normally Check whether the refrigerant system is ok Y 5 Judge 3 Check whether the N outdoor ambient N y Ni temperature is higherthan 9579 Stop the unit 43 C i Judge 4 Check whether the N amp outdoor unit is bad j Yes Make the outdoor unit ventilate well ventilation T No Y Judge 5 Check whether the A heat exchanger is dirty Yes Clean the heat exchanger Judge 6 Check whether the Y a Yes refrigerant pipe is blocked Let the refrigerant out then use the high pressure nitrogen or refrigerant to blow pipe vacuumize and charge the refrigerant again Replace outdoor main board 9 3 2 7 Low pressure protection P2 Onl
30. he electronic scale and record the weight 4 Operate the air conditioner at the cooling mode 5 Open the valves Low side on the charge set and 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 charge hose from the 3 way valve s service port immediately and turn off the air 15 conditioner before disconnecting the hose 7 Mount the valve stem caps and the service port Use torque wrench to tighten the service port cap to a torque of 18N m Be sure to check for gas leakage 7 6 Re installation while the indoor unit need to be repaired 1 Collecting the refrigerant into the outdoor unit ae Liquid side P wy 2 way valve X close Gas side 7 a y Open Indoor unit Outdoor unit MAN Clogo eo 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 hexagonal wrench to operate the valve stems 2 Connect the charge hose with the push pin of handle lo to the 3 way valves gas service port 3 Air purging of the charge hose Open the handle Lo valve of the manifold valve slightly to purge air from the charge hose for 5 seconds and then
31. ing cylinder and discharge the refrigerant by loosening the flare nut on the 2 way valve approximately 45 until the gauge indicates 0 3 to 0 5 Mpa 17 6 Disconnect the charge set and the charging cylinder and set the 2 way and 3 way valves to the open position Be sure to use a hexagonal wrench to operate the valve stems 7 Mount the valve stems nuts 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 leakage 7 7 Re installation while the outdoor unit need to be repaired 1 Evacuation for the whole system Indoor unit JUN Liquid side 2 way valve Outdoor unit Gas side 2 Vacuum pump Procedure 1 Confirm that both the 2 way and 3 way valves are set to the opened position 2 Connect the vacuum pump to 3 way valve s service port 3 Evacuation for approximately one hour Confirm that the compound meter indicates 0 1Mpa 4 Close the valve Low side on the charge set turn off the vacuum pump and confirm that the gauge needle does not move approximately 5 minutes after turning off the vacuum pump 5 Disconnect the charge hose from the vacuum pump 18 2 Refrigerant charging Indoor unit ON Liquid side Em P anre 1 Outdoor unit Charging cylinder Li
32. mpressor will stop and restart till T5 90 8 5 3 Low voltage protection VOLTAGE n 4 VOLREL1 VOLLIMT1 VOLFRE1 VOLREL2 VOLLIMT2 VOLFRE2 VOLRELS ot For M3OC 27HRDN1 M 220057100510 M4OC 36HRFN1 M 220057100530 model VOLTAGE 4 No limit VOLT RST1 ADD VOLT LTM1 ADD VOLT LTM FREQ1 ADD VOLT RST2 ADD VOLT LTM2 ADD VOLT FREQ2 ADD 1 Note if the low voltage protection occurs and not resumes within 3min it will keep the protection always after restart the machine 8 5 4 Compressor current limit protection If the compressor current exceeds the current limit value for 10 seconds the compressor frequency will be limited as below table Cooling mode Current frequency Hz Current limit value A Frequency limit COOL F10 ICOOLLMT6 Decrease the frequency to COOL F4 and run at COOL F9 ICOOLLMT5 COOL Fa for 3 minutes COOL F8 ICOOLLMT4 After that the frequency will be adjusted according to the COOL_F7 ICOOLLMT3 capacity demand and rise to the upper level every 3 COOL F6 ICOOLLMT2 minutes When the frequency COOL F4 capacity demand COOL F5 ICOOLLMT1 If the current frequency is lower than COOL_F4 the frequency will not be limited After 10s of the compressor start if the current gt ICOOL the AC will display the failure for 30 seconds and stop The AC will restart 3 minutes later Heating mode Current frequen
33. o correct then check whether the system can work normally N 36KBtu h T Yes _7 Check whether the nnecting line between MS board and the IPM module is gt 9 connected 7 Connect it tightly check ok or not heck whether th power supply line is connected correctly and tightly onnect it correct and tightly check ok or not connecting line of the compressor is connected correctly or tightly Connect it well check ok or not Check whether the lines in E part box are connected tightly Connect it tightly check ok or not _Replace the IPM check whether the system _ can work normally Check whether the bridge rectifiers are normal Use the multimeter 0 N measure the resistance between each two terminals check whether there is the condition that value of resistance is 0 Yes No Replace the main board Yes Y check whether the system gt Yes gt Replace the bridge rectifiers l can work normally L Check whether the connecting line of every reactor is normal If the lineis broken theresistanceofthetwo ports is models exceptforM4OC 36HRDN1 M Check whether the pom PFC module broken M40C 36HRDN1 M _Replace the compressor check whether the system Yes can work normally Replace th
34. r main board 9 3 2 8 Current protection of compressor ODU P3 Current protection of compressor Judge 1 Check whether the input current of the power supply wire is more than 12 5A For 27K it is 14 5A For 36K itis 20 Yes Y Check whether the refrigerant System is ok pau au N Judge 2 Check whether the N outdoor ambient temperature is higher than 50 C Yes Stop the unit uet R re Yes Make the outdoor unit ventilate well No Judge 4 Check whether gt Yes Clean the heat exchanger heat exchanger is dirty No Y 1 Judge 5 The refrigerant Let the refrigerant out then use the high Yes pressure nitrogen or refrigerant to blow pipe N pipe is blocked 0 a vacuumize and charge the refrigerant again No Replace outdoor main N board and check whether N the system can run normally N No Y Replace the electric control box Yes Trouble is solved 9 3 2 9 IPM module protection ODU P4 IPM module protection NEED ere Check whether the voltage range of P N on IPM module is N normal DC277 356V for 18 27KBtuh DC277 410Vfor Check whether th input power supply is correct 220 240V 1N 60Hz fegulate it t
35. ressor discharge temp Yes Check whether the refrigerant is leak Stop leaking and add refrigerant is more than 115 C A Y Check whether the wiring N connection is right between compressor discharge temp sensor and according to wiring diagrams No Correct the wiring connection Yes Judge The discharge temp n sensor is broken er Z Method Check whether the N resistance of compressor discharge temp sensor is right refer to the Appendix 2 Replace the compressor discharge temp sensor Yes N Replace outdoor main board Trouble is solved ei 9 3 2 5 Temperature protection of compressor top ODU Temperature protection of compressor top W ii TES Whether compressor operates Whether the connection is gt gt lt 0 good 2 No Reconnect and retest Whether refrigerant N circulation volume is normal Whether protector is normal If b protector is normal resistance gt Replace the protector No b Y Charge refrigerant Yes Replace the outdoor main Whether abnormality is the N N same after gas charging N Y Check refrigerant system such as cloggin
36. rt after 3 minutes 8 5 7 Outdoor unit anti freezing protection When T2B 0 for 250 seconds the indoor unit capacity demand will be zero and resume to normal when T2B gt 10 8 5 8 Oil return Running rules 1 Ifthe compressor frequency keeps lower than RECOILINFRE for 2hours the AC will rise the frequency to RECOILFRE for 3mins and then resume to former frequency Model RECOILINFRE YN018GMFI16M2D 45 YN027GMFI16M3D 45 YN036GMFI16M4D 40 2 During the oil return process the EXV and indoor units keep the current running mode the frequency will not be limited by the compressor discharge temp and the current 8 5 9 Compressor preheating functions Preheating permitting condition If T4 outdoor ambient temperature lt 3 and newly powered on or if T4 3 and compressor has stopped for over 3 hours the compressor heating cable will work Preheating mode A weak current flow through the coil of compressor from the wiring terminal of compressor then the compressor is heated without operation Preheating release condition If TA 5 orthe compressor starts running preheating function will stop 8 5 10 Compressor crankcase heater When 4 lt 3 and the compressor is not running the crankcase heater will be active When T425 or the compressor starts up the crankcase heater will stop work 9 Troubleshooting 9 1 Indoor unit error code explanation Wall Mounted Indoor Units ODU Error
37. ter the frequency limit 16 The frequency sending to compressor control 17 indoor unit evaporator outlet temp T 2A 18 B indoor unit evaporator outlet temp T253B 19 C indoor unit evaporator outlet temp T28C If the temp is lower than 9 degree the digital display tube will 20 D indoor unit evaporator outlet temp T2sD show 4 the temp is higher than 70 degree the digital display tube will show 70 If the indoor unit is not connected the digital 21 E indoor unit evaporator outlet temp T28E display tube will show 22 indoor unit room temp T1A 23 indoor unit room temp T B 24 C indoor unit room temp TiC 25 D indoor unit room temp TiD 26 indoor unit room temp T4E 27 A indoor unit evaporator outlet temp T28A 28 indoor unit evaporator outlet temp T28B 29 C indoor unit evaporator outlet temp T28C If the temp is lower than 9 degree the digital display tube will D ind t t tlet t show 9 If the temp is higher than 70 degree the digital display 20 indoor unit evaporator outlet temp T23D tube will show 70 If the indoor unit is not connected the digital 31 E indoor unit evaporator outlet temp T28E display tube will show 32 Condenser pipe temp T3 33 Outdoor ambient temp T4 34 Compressor discharge temp Tp The displa
38. tion T1 Indoor ambient temperature T2 Coil temperature of indoor heat exchanger middle T2B Coil temperature of indoor heat exchanger outlet T3 Coil temperature of outdoor heat exchanger T4 Outdoor ambient temperature T5 Compressor discharge temperature Ts Setting temp 8 2 Electric control working environment 8 2 1 Input voltage 230V 8 2 2 Input power frequency 60Hz 8 2 3 Indoor fan normal working amp is less than 1A 8 2 4 Outdoor fan Normal working amp is less than 1 5A 8 2 5 Four way valve normal working amp is less than 1A 8 2 6 Swing motor DC12V 8 3 Outdoor unit s digital display tube There is a digital display tube in outdoor PCB Digital display tube display function e In standby the LED displays e compressor operation the LED display the running frequency e In defrosting mode The LED displays dF or alternative displays between running frequency and dF each displays 2s e compressor pre heating The LED displays e In protection or malfunction the LED displays error code or protection code 8 4 Outdoor unit point check function There is a check switch in outdoor PCB Push the switch SW1 to check the states of unit when the unit is running The digital display tube will display the follow procedure when push SW1 each time Display Remark Indoor unit capacity demand code Outdoor unit running mode code Off 0 Cooling 1 Heating 2 Amenda
39. to purge the air be careful of the liquid refrigerant 3 Put the charging cylinder onto the electronic scale and record the weight 4 Operate the air conditioner at the cooling mode 5 Open the valves Low side on the charge set and charge the system with liquid refrigerant 14 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 before disconnecting the hose 7 Mount the valve stem caps and the service port Use torque wrench to tighten the service port cap to a torque of 18N m Be sure to check for gas leakage 7 5 Adding the refrigerant after running the system for many years side Qudorun JuI 2 way valve Indoor unit 3 way valve a 17 Bu Open 5 Charging cylinder i Procedure 1 Connect the charge 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 bottom up 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 t
40. tory capacity demand code Outdoor unit fan motor state Off 0 Low speed 1 High speed 2 Evaporator outlet temp for 1 indoor unit 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 tube will show 70 If the indoor unit Evaporator outlet temp for 3 indoor unit is not connected the digital display tube will show Evaporator outlet temp for 2 indoor unit Evaporator outlet temp for 4 indoor unit Condenser pipe temp T3 Outdoor ambient temp T4 Compressor discharge temp Tp Actual data If the temp is lower than 0 degree the digital display tube will show O If the temp is higher than 99 degree the digital display tube will show single digit and tens digit For example the digital display tube show 0 5 means the Elg ay compressor discharge temp is 105 degree If the indoor unit is not connected the digital display tube will show 12 Inverter current AD data 13 EXV open angle for 1 indoor unit Actual data divide 8 14 EXV open angle for 2 indoor unit Actual data divide 8 15 EXV open angle for 3 indoor unit Actual data divide 8 16 EXV open angle for 4 indoor unit Actual data
41. troller Is all indoor unit display 4 Measure Vs is it moving alternately between positive value and negative value Vs gt lt betweenterminaland gt lo _ gt lt P 3 is the voltage between S and indoor PCB connect ok L2 ReferPIC1 7 7 Ye Change the Indoor off the 810600 lt units Is IPM power LED gt No change IPM Power on by remote lt controller Iis it still N lt displaying the error code 7 M after3 minutes LAS PFC power LED lamp lt off Refer PIC3 P ls Main board reactor connecting LI lamp on Refer PIG 4 gt 9 well gt No Reconnect the wiring No Yes Change Outdoor Main PCB LAS indoor units number correci Check on the outdoor check point N 18 2 for dual zone for tri zone N 4 for qua zone Refer PIC 5 Trouble is solved r No No secondtime Change outdoor unit assembly include wiring totally Pic 1 Measure the voltage of L2 to S Vs is it moving alternately between positive value and negative value omm recom Wn PIC 2 Check the wiring Fast check PFC board Rectifier Make sure the standby op
42. ts water from dripping Discharge pipe temperature protection Compressor crankcase heater 3 Dimensions w Air inlet m in Model w D H wi 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 Wiring Diagram 4 1 YNO18GMFI16M2D 202057090103 COMPRESSOR sens VANS LIE vij a FAN CAPACITOR 4 2 YN027GMFI16M3D 202057190114 BASIE WEA WES WME COMPRESSOR H lum WO VALVES Vet TNI wo jux VANS VALVE ai FAN CAPACITOR W ws m s i 2020571901 78 E E E i i tur LN i E i m l ESA SER i sp H i amos ang rn as TERRERANIRE
43. y for YNO36GMFI16M4D Low pressure protection Judge 1 Whether the N wiring between the low pressure protector and main control board is connected well or correctly Yes Judge 2 Whether the low pressure protector is broken F Method Short connect low pressure protector N socket check whether the N system can run normally No No Connect it well Yes Replace low pressure protector Check whether the refrigerant system is ok N N j Yes Judge 3 Check whether the outdoor ambient X temperature is too low Judge 4 The refrigerant of the system is leakage N Method Connect the pressure gauge to the gauge joint of the Stop the unit Leak hunting Charge nitrogen or refrigerant to the system if the leakage is serious there Iwill be distinct gas leakage cici sound if the N SS MS Tare Yes gt leakage is slight use the suds mixture of 0 14 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 or refrigerant to blow pipe d pipe is blocked vacuumize and charge the refrigerant again T No v Replace outdoo
44. y value is between 30 120 degree If the temp is lower than 30 degree the digital display tube will show 30 If the temp is higher than 99 degree the 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 35 AD value of current f 36 AD value of voltage The display value is hex number 37 EXV open angle for A indoor unit EXV 5 Actual data 4 38 open angle for B indoor unit If the value is higher than 99 the digital display tube will show 39 open angle for C indoor unit single digit and tens digit 40 EXV open angle for D indoor unit For example the digital display tube show 2 0 it means the EXV open angle is 120 4 480p 41 EXV open angle for E indoor unit 0 The display value is hex Bit 0 number For Bit5 Frequency limit caused by T4 example the digital display Bit4 Frequency limit caused by T2 tube show 42 Frequency limit symbol 2A then Bit5 1 Bit3 Frequency limit caused by T3 Bit3 1 Bit1 1 E It means Bit2 Frequency limit caused by Tp frequency limit Bit1 Frequency limit caused by current Frequency limit caused by voltage Current 43 Average value of T2 Sum T2 value of all indoor units indoor units number 44 Outdoor unit fan motor state Off 0 High speed 1 Med speed 2 Low speed 3 45 The last error or protection code 00 means no malfunction
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