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Service Manual SM-Inverter_(i)

Description

Communication error (outdoor PCB & IPM PCB)

Supposed Cause

Wrong models interconnected

Wrong indoor unit PCB mounted

Indoor unit PCB defective

Wrong outdoor unit PCB mounted or defective

Troubleshooting

Check the models number

Check the combination of the models

Содержание SM-12-012

Страница 1: ...Service Manual SM Inverter_ i Air Conditioners Service Manual Split Inverter SM 12 012...

Страница 2: ...1B9 High Quality Efficiency Daikin DC Inverter compressor High Performance Daikin Inverter Controller 5 speed Step less Fan operation New Inverter only Remote Control Piping Length Elevation Model Max...

Страница 3: ...nction kindly cut off the jumper J_AUTO as highlighted in attachment Please be informed that after disable auto random restart unit is not able to restart with last state memory after power resume fro...

Страница 4: ...r using handset The operating modes are Cool Heat Fan Auto Dry Cool Mode When Tr Ts 1 5 C Comp Indoor Fan and Outdoor Fan ON When Tr Ts 2 C Compressor and Outdoor Fan OFF Tr Room Temperature Ts Set Te...

Страница 5: ...r cut off point compressor will stop FAN MODE Only High Medium and Low fan speeds are allowed When changing cool mode to fan mode the compressor will stop and OD fan stops based on fan OFF control Com...

Страница 6: ...onse to indoor once the valid data is received If the data communication line between indoor and outdoor disrupted for 15s continuously compressor will stop OD fan stop with fan OFF timer ID LED blink...

Страница 7: ...overall current protection preheating operation control Heat sink Used for capturing heat sink temperature Suction pipe Used for EXV SH suction pipe SH protection control in heating Gas pipe Used for...

Страница 8: ...orator AUTO RESTART Factory pre set Allow unit to automatically resume the same operating mode it was in before a power failure 4 WAY VALVE CONTROL Change over switching is only carried out during ope...

Страница 9: ...speed with higher outdoor air temperature Heat mode Higher fan speed with lower outdoor air temperature When compressor stops fan OFF delay 30 seconds is carried out INDOOR COIL FREEZE PREVENTION Only...

Страница 10: ...o prevent liquid flood back to the compressor To limit starting current When compressor starts to rotate from OFF to ON compressor rotation is set to run gradually to each upper limit at a specific ti...

Страница 11: ...terval LIMIT ROTATION Determine from Upper limit rotation A minimum value was determined among the upper limits rotation i e protection controls Lower limit rotation A maximum value was determined amo...

Страница 12: ...ower upper limit is canceled and returned to command rotation HIGH PRESSURE PROTECTION To prevent high pressure in the system Compressor operating frequency is adjusted based on upper limit of coil te...

Страница 13: ...he first time this control starts and set the current frequency as upper limit At the same time running frequency start to reduce by 1 step and so on until temperature falls between 99 C 109 C and 90...

Страница 14: ...on cut in when the input current exceeds L1 for 2 seconds ARXN RXN LV1B 9 Compressor will stop and it is considered total current overload If input current L3 the compressor frequency is reset based o...

Страница 15: ...less Handset BRC52A61 A62 Using wireless handset BRC52A61 A62 to retrieve error code 1 Hold down ON TIMER CANCEL or OFF TIMER CANCEL for 5 seconds until indication flashes on the handset temperature d...

Страница 16: ...controller 2 Replace battery again into remote controller 3 Press Mode ON OFF buttons together 4 The 00 will show at temperature section 5 Press Mode button to 5 00 6 Press Power On toward the indoor...

Страница 17: ...M Inverter_ i 17 Using wired handset BRC51A61 A62 The error will show at the LCD display BRC51A61 can retrieved last state memory by Press SLEEP TIMER ACTIVE simultaneously for 5 seconds and the error...

Страница 18: ...BNORMAL 6 A7 AIR SWING MOTOR LOCK x 7 C4 INDOOR HEAT EXCHANGER THERMISTOR SHORT OPEN 8 C9 INDOOR ROOM THERMISTOR SHORT OPEN 9 E1 OUTDOOR PCB ERROR x 10 E5 COMPRESSOR OVERLOAD x 11 E6 COMPRESSOR LOCK S...

Страница 19: ...T OPEN MISPLACED 22 J6 OUTDOOR HEAT EXCHANGER THERMISTOR SHORT OPEN 23 L3 ELECTRICAL BOX TEMPERATURE RISE compressor off x 24 L4 HEAT SINK OVERHEAT compressor on 25 L5 IPM ERROR IGBT ERROR output over...

Страница 20: ...r unit PCB abnormality Supposed Cause 1 Faulty indoor PCB 2 Faulty connector connection at indoor Troubleshooting A3 Description Water Pump Error Supposed Cause 1 Faulty drain pump or float switch 2 I...

Страница 21: ...eeze protection or High Pressure Control Supposed Cause 1 Indoor air filter heat exchanger block due to dust accumulation 2 Indoor air short circuit 3 Indoor coil thermistor faulty 4 Indoor PCB faulty...

Страница 22: ...Service Manual SM Inverter_ i 22...

Страница 23: ...Service Manual SM Inverter_ i 23 A6 Description Fan Motor or Related Abnormality Supposed Cause 1 Indoor fan motor winding short or the motor lead wire broken 2 Indoor PCB faulty Troubleshooting...

Страница 24: ...n Indoor Coil Thermistor short open Supposed Cause 1 Thermistor connector faulty 2 Indoor PCB faulty Troubleshooting C9 Description Indoor Room Thermistor Short Open Supposed Cause 1 Thermistor connec...

Страница 25: ...s Noise Momentary voltage drop Momentary power failure 2 Damage of EEPROM 3 Faulty outdoor unit PCB Troubleshooting Check the outdoor condition Power on and off again Error Again Replace outdoor PCB N...

Страница 26: ...Service Manual SM Inverter_ i 26...

Страница 27: ...27 E3 Description High Pressure protection Supposed Cause 1 faulty high pressure switch connector or wire harness 2 Indoor filter outdoor coil dirty 3 Outdoor fan not running unit overcharge stop val...

Страница 28: ...i 28 E4 Description Low Pressure protection Supposed Cause 1 faulty high pressure switch connector or wire harness 2 Indoor filter outdoor coil dirty 3 Outdoor fan not running unit overcharge stop val...

Страница 29: ...Description Compressor Overload detected through compressor OL Supposed Cause Refrigerant Shortage 4 way valve malfunction Outdoor unit PCB defective Water mixed in the local piping Electronic expans...

Страница 30: ...f the power Disconnect the harness U V and W Normal Check with the inverter checker Correct the power supply Turn off the power and reconnect the harness Turn on the power again and get the system res...

Страница 31: ...Service Manual SM Inverter_ i 31 E7 Description DC Fan Lock Supposed Cause Fan motor breakdown Harness or connector disconnected between fan motor and PCB or in poor contact Troubleshooting...

Страница 32: ...short circuit Troubleshooting Input current flowing above its stop level Replace the outdoor unit Yes No Yes Turn off the power and disconnect the harness U V and W Check with the inverter checker Me...

Страница 33: ...Supposed Cause EXV faulty EXV connected wrongly Troubleshooting EA Description 4 way valve error Supposed Cause Thermistor defective Connector in poor contact 4 way valve defective Outdoor PCB defecti...

Страница 34: ...connector Resistance between harness about 3k Reconnect Replace outdoor unit PCB Check the 4 way valve switching output Functioning No Yes No Yes Any thermsistor disconnected Thermistor functioning R...

Страница 35: ...or defective Outdoor PCB defective Water mixed in the local piping EXV defective Stop Valve defective Troubleshooting F6 Description Heat exchanger overheat Supposed Cause The installation space is no...

Страница 36: ...fan motor Change outdoor location Clean outdoor coil Check outdoor coil thermistor resistance Resistance normal Change thermistor Check refrigerant level EXV stop valve and condenser ambient temperatu...

Страница 37: ...rvice Manual SM Inverter_ i 37 HO Description Compressor sensor system error Supposed Cause Reactor disconnection Compressor disconnection Outdoor unit PCB defective Compressor defective Troubleshooti...

Страница 38: ...tdoor PCB defective Stop valve closed Input voltage out of specification Troubleshooting No No Yes Yes Check with inverter checker Check for short circuit Normal Check the electrolytic capacitor volta...

Страница 39: ...Service Manual SM Inverter_ i 39 H8 Description AC current sensor error Supposed Cause Internal wiring broken Outdoor unit PCB defective Troubleshooting...

Страница 40: ...tr short open J5 Suction pipe thermistor short open J6 Outdoor heat exchanger thermistor short open J7 Subcooling heat exchanger thermistor short open J8 Liquid pipe thermistor short open J9 Gas pipe...

Страница 41: ...iption Outdoor control box overheat Supposed Cause Fin temperature rise due to defective outdoor unit fan Fin temperature rise due to short circuit Fin thermistor defective Connector in poor contact O...

Страница 42: ...temperature rise due to short circuit Fin temperature rise due to defective outdoor unit fan Fin thermistor defective Connector in poor contact Outdoor unit PCB defective Silicon grease is not applie...

Страница 43: ...to wrong internal wiring Over current due to abnormal supply voltage Over current due to defective PCB Error detection due to defective PCB Over current due to closed stop valve Over current due to co...

Страница 44: ...44 U0 Description Insufficient gas Supposed Cause Refrigerant shortage Refrigerant leakage Stop valve closed EXV defective Discharge pipe thermistor defect Indoor and outdoor unit coil thermistor not...

Страница 45: ...Service Manual SM Inverter_ i 45 Troubleshooting...

Страница 46: ...lty outdoor unit PCB Faulty indoor unit PCB Indoor unit outdoor unit signal transmission error due to wiring error Indoor unit outdoor unit signal transmission error due to disturbed power supply wave...

Страница 47: ...Service Manual SM Inverter_ i 47...

Страница 48: ...nication error outdoor PCB IPM PCB Supposed Cause Wrong models interconnected Wrong indoor unit PCB mounted Indoor unit PCB defective Wrong outdoor unit PCB mounted or defective Troubleshooting Check...

Страница 49: ...Service Manual SM Inverter_ i 49 ATXN FTXN 25 35 LV1B 9 ARXN RXN 25 35 LV1B 9 4 0 Wiring Connection...

Страница 50: ...Service Manual SM Inverter_ i 50 ATXN FTXN 50 60 LV1B 9 ARXN RXN50 60 LV1B 9...

Страница 51: ...Service Manual SM Inverter_ i 51 Refrigerant Diagram ATXN FTXN 25 35 50 60 LV1B 9...

Страница 52: ...Service Manual SM Inverter_ i 52 ARXN RXN 25 35 50 60 LV1B 9 Appendix Resistance value when 25 C...

Страница 53: ...Inverter_ i 53 ARXN RXN50 60 LV1B 9 ARXN RXN 25 35 LV1B 9 Indoor Wall Mounted 10K 10K Ceiling Concealed Ceiling Cassette Ceiling Mounted 10K Outdoor 10K 20K Table 1 Resistance R25 10K ohm Table 2 Resi...

Страница 54: ...Service Manual SM Inverter_ i 54 Temperature C Resistance value k 20 211 0 15 150 0 10 116 5 5 88 0 0 67 2 5 51 9 10 40 0 15 31 8 20 25 0 25 20 0 30 16 0 35 13 0 40 10 6 45 8 7 50 7 2...

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