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Only for training and service purposes
LGE Internal Use Only
Self-diagnosis function
Self-diagnosis function
Self-Diagnosis Function
Error Indicator
• This function indicates types of failure in self-diagnosis and occurrence of failure for air condition.
• Error mark is displayed on display window of indoor units and wired remote controller, and 7-segment LED of
outdoor unit control board as shown in the table.
• If more than two troubles occur simultaneously, lower number of error code is first displayed.
• After error occurrence, if error is released, error LED is also released simultaneously.
Error Display
1st,2nd LED of 7-segment indicates error number, 3rd LED indicates unit number.
Ex) 211 : No.21 error of master unit
213 : No.21 error of slave2
011 ’ 051 : No.105 error of master unit
Display Title Cause of Error
Indoor unit related error
01-Air temperature sensor of indoor unit Air temperature sensor of indoor unit is open or short
02-Inlet pipe temperature sensor of indoor unit Inlet pipe temperature sensor of indoor unit is open or short
03-
Transmission error : wired remote controller
↔ indoor unit
Failing to receive wired remote controller signal in indoor unit PCB
04-Drain pump Malfunction of drain pump
05-Transmission error : outdoor unit ↔ indoor unit Failing to receive outdoor unit signal in indoor unit PCB
06-Outlet pipe temperature sensor of indoor unit Outlet pipe temperature sensor of indoor unit is open or short
07-Different operation mode Operation mode between indoor unit and outdoor unit is different
09-Serial No.
In case when the serial number marked onEEPROM of Indoor unit is 0 or
FFFFFF
10-Poor fan motor operation
Disconnecting the fan motor connector/Failure of indoor fan motor lock
Air temperature sensor of indoor unit is open or short
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