Note: ★ - Solid Light, ○ - Flashing Light, ` - Light is Off
| Error Code
|
Outdoor PCB LED lights
|
Error Description
|
Troubleshooting
|
| LED1
|
LED2
|
LED3
|
|
|
`
|
`
|
`
|
Normal Operation
|
|
|
|
★
|
`
|
★
|
Check Outdoor Coil Temperature Sensor
|
- The outdoor coil temperature sensor might be loose.
- The outdoor coil temperature sensor might have failed.
- The outdoor unit's main control board might have failed.
|
|
|
★
|
`
|
`
|
Check Compressor Exhaust Temperature Sensor
|
- The compressor exhaust temperature sensor might be loose.
- The compressor exhaust temperature sensor might have failed.
- The outdoor unit's main control board might have failed.
|
|
|
`
|
`
|
○
|
Communication Failure Between Indoor and Outdoor Unit
|
- 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.
|
|
|
★
|
○
|
`
|
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.
|
|
|
★
|
○
|
★
|
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.
|
|
|
`
|
★
|
★
|
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.
|
|
|
★
|
★
|
★
|
Check Outdoor EEPROM
|
- The EEPROM chip might be loose.
- The EEPROM chip might be inserted improperly.
- The EEPROM chip might have failed.
|
|
|
`
|
○
|
★
|
Compressor Exhaust Temperature Too High Protection
|
- The compressor exhaust temperature sensor might have failed.
- The unit has insufficient refrigerant.
|
|
|
★
|
★
|
`
|
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.
|
|
|
`
|
★
|
○
|
Compressor Shell Temperature Too High Protection
|
- The compressor exhaust temperature sensor might be loose.
- The unit has insufficient refrigerant.
|
|
|
`
|
○
|
○
|
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.
|