| Fault Code
|
Fault Description
|
Possible Reason for Fault
|
Possible Remedies
|
| 1
|
Q axis current detection fault
|
- Compressor wire connection is loose
- Bad driver board components
- Compressor start load is too large
- Compressor demagnetization
- Compressor oil shortage, weakened crankshaft
- Compressor insulation fault
|
- Check the compressor wire connection
- Change the driver board
- Turn the machine one after pressure rebalancing
- Change compressor
|
| 2
|
Phase current detection fault
|
- Compressor voltage default phase
- Bad driver board components
- Compressor insulation fault
|
- Check the compressor wire connection
- Change the driver board
- Change the compressor
|
| 3
|
Initialization phase current imbalance
|
- Bad driver board components
|
|
| 4
|
Speed estimation fault
|
- Bad driver board components
- Compressor shaft clamping
- Compressor insulation fault
|
- Change the driver board
- Change the compressor
|
| 5
|
IPM FO output fault
|
- System overload or current overload
- Driver board fault
- Compressor oil shortage; Weakened crankshaft
- Compressor insulation fault
|
- Check the air-conditioner system
- Change the driver board
- Change the compressor
|
| 6
|
Communication between driver board and control board fault
|
- Communication wire connection is loose
- Driver board fault
- Main control board fault
|
- Check the communication wire
- Change the driver board
- Change the main control board
|
| 7
|
AC voltage overload
|
- Supply voltage input too high or too low
- Driver board fault
|
- Check the power supply
- Change the driver board
|
| 8
|
DC voltage overload
|
- Supply voltage input too high
- Driver board fault
|
- Check the power supply
- Change the driver board
|
| 9
|
AC voltage imbalance
|
Driver board fault
|
Replace the driver board
|
| 10
|
The PFC current detection circuit fault before the compressor is on
|
Bad driver board components
|
Replace the driver board
|
| 11
|
AC voltage supply in outrange
|
- Power supply abnormal; power frequency out of range
- Driver board fault
|
- Check the system
- Change the driver board
|
| 12
|
PFC Over-current FO output low level
|
- System overload, current too large
- Driver board fault
- PFC fault
|
- Check the system
- Change the driver board
- Change PFC
|
| 13
|
Inverter over current
|
- System overload; current too large
- Driver board fault
- Compressor oil shortage; weakened crankshaft
- Compressor insulation fault
|
- Check the system
- Change the driver board
- Change the compressor
|
| 14
|
PFC over current
|
- System overload; current too large
- Driver board fault
- PFC fault
|
- Check the system
- Change the driver board
- Change PFC
|
| 15
|
Instantaneous power failure detection
|
- The power supply is not stable
- Instantaneous power failure
- Driver board fault
|
- Check the power supply
- Change the driver board
|
| 16
|
DC voltage is too low
|
- Voltage input too low
- Driver board fault
|
- Check the power supply
- Change the driver board
|
| 18
|
Driver board read EE data error
|
- EEPROM has no data or data error
- EEPROM circuit fault
|
- Change the EEPROM component
- Change the driver board
|
| 19
|
PFC chip receive data fault
|
Abnormal communication loop
|
Change the driver board
|
| 20
|
PFC soft start fault
|
Abnormal PFC drive loop
|
Change the driver board
|
| 21
|
The compressor drive chip could not receive data from the PFC chip
|
Communication loop fault
|
Change the driver board
|
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