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Copyright ©2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Self-diagnosis function
1. 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
❈ Refer to the DX-Venitilation manual for DX-Venitilation error code
Display Title Cause of Error
HR unit related error
2 0 0 1 Searching pipe Error Failure of automatic addressing of valves
2 0 1
C +
#HR
HR unit1 Liqiud sensor error Liquid pipe sensor of HR unit open or short
2 0 2
C +
#HR
HR unit1 Sub Cooling Pipe In sensor
error
Sub Cooling Pipe In sensor of HR unit open or short
2 0 3
C +
#HR
HR unit1 Sub Cooling Pipe Out sen-
sor error
Sub Cooling Pipe Out sensor of HR unit. open or short
2 0 4
C +
#HR
Communication error Failing to receive HR unit signal at outdoor unit
C : HR unit
# : HR unit Number
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