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

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* The outdoor drive board might have failed.
 
* The outdoor drive board might have failed.
 
* The compressor might have failed.
 
* The compressor might have failed.
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|-
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| 19
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| x
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| x
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| x
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| ○
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| Check Compressor Drive
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|
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* The outdoor drive board might have failed.
 +
* The compressor might have failed.
 +
* The outdoor control board might have failed.
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|-
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| 20
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| ★
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| x
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| x
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| ○
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| Outdoor Fan Motor Locked Rotor Protection
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|
 +
* The connection of the outdoor fan motor might be loose.
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* There might be something obstructing the outdoor fan motor.
 +
* The fan motor might have failed.
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* The outdoor control board might have failed.
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|-
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| 21
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|
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|
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|
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|
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| Outdoor Coil Anti-Overload Protection With Cooling
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|
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* There might be too much refrigerant.
 +
* The outdoor fan motor might have failed.
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* The outdoor fan might be broken.
 +
* The condensor might be dirty.
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* The air inlet and outlet of the indoor and outdoor unit is abnormal.
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|-
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| 22
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|
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|
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|
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|
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| Compressor Pre-Heating Process
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|
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* This is a normal operation mode in cold weather.
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|-
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| 24
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|
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|
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|
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|
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| Check Outdoor Board Chip
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|
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* The drive board might not be compatible with this unit.
 +
* The compressor might not be compatible with this unit.
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|-
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| 26
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|
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|
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|
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|
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| Protection Against Overheated Outdoor Radiator
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|
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* Radiator sensors might have failed.
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* Detection circuit of the sensor on the control panel might have failed.
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|-
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| 27
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|
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|
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|
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|
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| High Pressure System Protection
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|
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* The pressure switch might have failed.
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* The pressure detection system on the control panel might have failed.
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* The measured value of the system pressure might have exceeded the limit.
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|-
 +
| 33
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| ○
 +
| x
 +
| x
 +
| ★
 +
| Check Indoor Ambient Temperature Sensor
 +
|
 +
* The indoor ambient temperature sensor might be loose.
 +
* The indoor ambient temperature sensor might have failed.
 +
* The indoor ambient control board might have failed.
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|-
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| 34
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| ○
 +
| x
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| ★
 +
| x
 +
| Check indoor Coil Temperature Sensor
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|
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* The indoor coil temperature sensor might be loose.
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* The indoor coil temperature sensor might have failed.
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* The indoor control board might have failed.
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|-
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| 36
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| ○
 +
| ★
 +
| x
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| ★
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| Communication Failure Between Indoor and Outdoor Unit
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|
 +
* 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.
 +
|-
 +
| 38
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| ○
 +
| ★
 +
| ★
 +
| ★
 +
| Check Indoor EEPROM Failure
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|
 +
* The EEPROM chip might be loose.
 +
* The indoor control board might have failed.
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|-
 +
| 39
 +
| ○
 +
| x
 +
| ★
 +
| ★
 +
| Check Indoor Fan Motor
 +
|
 +
* The indoor fan motor might be obstructed.
 +
* The indoor fan motor cord might be loose.
 +
* The indoor fan motor might have failed.
 +
* The indoor control board might have failed.
 +
|-
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| 41
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| ★
 +
| ★
 +
| ○
 +
| ★
 +
|  Indoor Board Grounding Failure
 +
|
 +
* Indoor control board has failed.
 
|-
 
|-

Revision as of 13:12, 20 April 2017

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.
19 x x x Check Compressor Drive
  • The outdoor drive board might have failed.
  • The compressor might have failed.
  • The outdoor control board might have failed.
20 x x 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.
21 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.
22 Compressor Pre-Heating Process
  • This is a normal operation mode in cold weather.
24 Check Outdoor Board Chip
  • The drive board might not be compatible with this unit.
  • The compressor might not be compatible with this unit.
26 Protection Against Overheated Outdoor Radiator
  • Radiator sensors might have failed.
  • Detection circuit of the sensor on the control panel might have failed.
27 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.
33 x x Check Indoor Ambient Temperature Sensor
  • The indoor ambient temperature sensor might be loose.
  • The indoor ambient temperature sensor might have failed.
  • The indoor ambient control board might have failed.
34 x x Check indoor Coil Temperature Sensor
  • The indoor coil temperature sensor might be loose.
  • The indoor coil temperature sensor might have failed.
  • The indoor control board might have failed.
36 x 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.
38 Check Indoor EEPROM Failure
  • The EEPROM chip might be loose.
  • The indoor control board might have failed.
39 x Check Indoor Fan Motor
  • The indoor fan motor might be obstructed.
  • The indoor fan motor cord might be loose.
  • The indoor fan motor might have failed.
  • The indoor control board might have failed.
41 Indoor Board Grounding Failure
  • Indoor control board has failed.