View source for Blizzard Series Outdoor Unit Troubleshooting

'''Note: ★ - Solid light, ○ - Flashing light, ` - Light is off x - Light Flashes every two seconds '''
{| class="wikitable"
| rowspan="2"| Error Code
| colspan="3"| Outdoor PCB LED lights
| rowspan="2"| Error Description
| rowspan="2"| 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.
|-
|
| ○
| `
| ○
| Check Compressor Drive 
| 
* The outdoor drive board might have failed.
* The compressor might have failed.
* The outdoor control board might have failed.
|-
| 
| ○
| ○
| ★
| Outdoor Fan Motor Locked Rotor Protection
|
* The connection of the outdoor fan motor might be loose.
* There might be something obstructing the outdoor fan motor.
* The fan motor might have failed.
* The outdoor control board might have failed.
|-
| 
| `
| ★
| `
| Outdoor Coil Anti-Overload Protection With Cooling
| 
* There might be too much refrigerant.
* The outdoor fan motor might have failed.
* The outdoor fan might be broken.
* The condensor might be dirty.
* The air inlet and outlet of the indoor and outdoor unit is abnormal.
|-
| 
| `
| ○
| `
| 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 might be obstructed.
* The condenser might be dirty.
* The outdoor unit might have been installed incorrectly.
|-
| 
| ○
| `
| `
| PFC Protection
| 
* The PFC might have failed.
* The outdoor drive board might have failed.
|-
| 
| ○
| ★
| ○
| Compressor Pre-Heating Process
| 
* This is a normal operation mode in cold weather.
|-
| 
| ★
| `
| ○
| Check Outdoor Board Chip
| 
* The drive board might not be compatible with this unit.
* The compressor might not be compatible with this unit.
|-
| 
| ★
| ★
| ○
| 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.
|-
|
| ○
| ○
| `
| DC Compressor Start Failure
| 
* The outdoor drive board might have failed.
* The compressor might have failed.
|-
| 
| ★
| ○
| ○
| Outdoor Ambient Temperature Too Low Protection
| 
* Outdoor ambient temperature too low for operation.
|-
| 
| ○
| x
| x 
| Protection Against Overheated Outdoor Radiator
|
* Radiator sensors might have failed.
* Detection circuit of the sensor on the control panel might have failed.
|-
| 
| ○
| ○
| x
| High Pressure System Protection
| 
* The pressure switch might have failed.
* The pressure detection system on the control panel might have failed.
* The measured value of the system pressure might have exceeded the limit.
|}
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