Acson E Series - Page 40

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Troubleshooting A5LCY-E-2010
Error Codes
Error Code Error Description Possible causes / corrective action
A1 Indoor PCB error Indoor PCB defective
A5 Antifreeze Indoor heat exchanger thermistor error
A6 Indoor fan motor abnormal Call your local dealer
C4 Indoor heat exchanger (1) thermistor short/
open
- Check indoor heat exchanger thermistor wire and
connection
- Check indoor heat exchanger thermistor resistance
C9 Indoor room thermistor short/open
- Check indoor heat exchanger thermistor wire and
connection
- Check room thermistor resistance
E1 Outdoor PCB error Outdoor PCB defective
E5 Compressor motor lock Call your local dealer
E6 Compressor start-up error Call your local dealer
E7 Outdoor DC fan motor lock Call your local dealer
E8 AC input over current Check input current
EA 4 way valve error - Check indoor and outdoor heat exchanger temperture
- During Heating, abnormal if indoor heat exchanger
temperature < outdoor heat exchanger temperature
- During Cooling, abnormal if indoor heat exchanger
temperature > outdoor heat exchanger temperature
F3 Discharge pipe overheat Call your local dealer
F6 Heat exchanger overheat
The air discharge of the outdoor heat exchanger unit
could be clogged or blocked by dirt
H0 Compressor sensor system error Call your local dealer
H6 Compressor feedback detection error Call your local dealer
H8 AC current sensor error Call your local dealer
H9 Outdoor air thermistor short/open
- Check indoor heat exchanger thermistor wire and
connection
- Check outdoor air thermistor resistance
J3 Compressor discharge pipe thermistor short/
open/misplaced
- Check indoor heat exchanger thermistor wire and
connection
- Check compressor discharge pipe thermistor
resistance
J6 Outdoor heat exchanger thermistor short/open - Check indoor heat exchanger thermistor wire and
connection
- Check outdoor heat exchanger thermistor resistance
L3 Outdoor control box overheat Call your local dealer
L4 Heat sink overheat Call your local dealer
L5 IPM error / IGBT error Call your local dealer
P4 Heat sink thermistor short/open - Check indoor heat exchanger thermistor wire and
connection
- Check heat sink thermistor resistance
U0 Insuffi cient gas - Refrigerant leakage
- Discharge pipe/ indoor or outdoor heat exchanger/
indoor room/outdoor air thermistor disconnected
U2 DC voltage out of range Call your local dealer
U4 Communication error Check communication wire and connection with indoor
UA Installation error
Coupling only between A5LCY10/15ER-A5WMY10/
15KR