Difference between revisions of "Blue Series 2 Outdoor Unit Troubleshooting"

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* The outdoor coil temperature sensor might have failed.
 
* The outdoor coil temperature sensor might have failed.
 
* The outdoor unit's main control board 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.
 
|-
 
|-

Revision as of 15:19, 19 April 2017

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.
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