LG MULTIV III Service Manual page 37

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
❈ Refer to the DX-Venitilation manual for DX-Venitilation error code
Display
2 0 0 1 Searching pipe Error
C +
2 0 1 HR unit1 Liqiud sensor error
#HR
HR unit1 Sub Cooling Pipe In sensor
2 C +
2 0
#HR
error
HR unit1 Sub Cooling Pipe Out sen-
C +
2 0 3
#HR
sor error
4 C +
2 0 Communication error
#HR
C : HR unit
# : HR unit Number
Copyright ©2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
213 : No.21 error of slave2
Title
Failure of automatic addressing of valves
Liquid pipe sensor of HR unit open or short
Sub Cooling Pipe In sensor of HR unit open or short
Sub Cooling Pipe Out sensor of HR unit. open or short
Failing to receive HR unit signal at outdoor unit
- 37 -
Self-diagnosis function
011 → 051 : No.105 error of master unit
Cause of Error
LGE Internal Use Only