Note: ★ - Solid light, ○ - Flashing light, x - Light is off
| Error Code
|
Indoor PCB LED lights
|
Error Description
|
Troubleshooting
|
| Running
|
Timer
|
Sleep
|
Power
|
| 1
|
2
|
3
|
4
|
| EA
|
|
|
|
|
Display Board and Control Board Communication Error
|
- The connection between the display board and control board might be loose.
- The indoor control board might have failed.
- The wiring of the display board might be incorrect.
|
| 0
|
|
|
|
|
Normal Operations
|
|
| 1
|
x
|
○
|
x
|
x
|
Outdoor Coil Temperature Sensor Failure
|
- The outdoor coil temperature sensor might be loose.
- The outdoor coil temperature sensor might have failed.
- The indoor control board might have failed.
|
| 2
|
x
|
○
|
★
|
x
|
Compressor Exhaust Temperature Sensor Failure
|
- The compressor exhaust temperature sensor might be loose.
- The compressor exhaust temperature sensor might have failed.
- The outdoor control board might have failed.
|
| 5
|
★
|
○
|
x
|
x
|
IPM Module Protection
|
- The IPM board might have failed.
- The outdoor fan might be broken.
- The outdoor fan motor might have failed.
- The outdoor fan is being obstructed.
- The condenser might be dirty.
- The outdoor unit might not have been installed correctly.
|
| 6
|
★
|
○
|
x
|
★
|
AC Voltage Higher or Lower Protection
|
- The supply voltage is higher or lower than normal.
- The inner supply voltage of the unit is higher or lower than normal.
|
| 7
|
★
|
○
|
★
|
x
|
Communication Failure Between Indoor and Outdoor Units
|
- The communication cable connection might be loose.
- The communication cable might have failed.
- The connection between the filter board and the outdoor control board might be incorrect or loose.
- The connection between the filter board and the terminal might be incorrect or loose.
- The indoor unit control board might have failed.
- The PFC board might have failed.
- The power board might have failed.
- The outdoor unit control board might have failed.
|
| 8
|
★
|
○
|
★
|
★
|
Current Overload Protection
|
- The fan motor might have run abnormally.
- The condenser and/or evaporator might be dirty.
- The air inlet and outlet might be abnormal.
|
| 9
|
x
|
x
|
○
|
x
|
Maximum Current Protection
|
- The outdoor control board might have short-circuited.
- The drive board might have short-circuited.
- Other electrical components might have short-circuited.
|
| 10
|
x
|
x
|
○
|
★
|
Communication Error Between Outdoor Unit Control Board and Driver Board
|
- The connection between control board and driver board might be loose.
- Either the control or driver board might have failed.
|
| 11
|
x
|
★
|
○
|
x
|
Check Outdoor EEPROM
|
- The EEPROM chip might be loose.
- The EEPROM chip might be inserted improperly.
- The EEPROM chip might have failed.
|
| 12
|
x
|
★
|
○
|
★
|
Outdoor Ambient Temperature Too Low Protection
|
- Outdoor ambient temperature too low for operation.
|
| 13
|
★
|
x
|
○
|
x
|
Compressor Exhaust Temperature Too High Protection
|
- The compressor exhaust temperature sensor might have failed.
- The unit has insufficient refrigerant.
|
| 14
|
★
|
x
|
○
|
★
|
Check Outdoor Ambient Temperature Sensor
|
- The outdoor ambient temperature sensor's connection might be loose.
- The outdoor ambient temperature sensor might have failed.
- The outdoor control board might have failed.
|
| 15
|
★
|
★
|
○
|
x
|
Compressor Shell Temperature Too High Protection
|
- The compressor exhaust temperature sensor might be loose.
- The unit has insufficient refrigerant.
|
| 16
|
|
|
|
|
Anti-Freeze Protection (Cooling) or Overload Protection (Heating) in Indoor Unit
|
- The indoor coil temperature sensor might be loose.
- The indoor coil temperature sensor might have failed.
- The indoor control board might have failed.
- The refrigerant system is abnormal.
|
| 17
|
|
|
|
|
PFC Protection
|
- The PFC might have failed.
- The outdoor drive board might have failed.
|
| 18
|
|
|
|
|
DC Compressor Start Failure
|
- The outdoor drive board might have failed.
- The compressor might have failed.
|