LG Multi V CRUN Series Service Manual page 239

Fault diagnosis and Trouble shooting guide
Display
Title
code
Reverse
connection of
54
R,S,T power
line
Trouble shooting Flow
Exchange the connection of two of the
Meaning
Is the R,S,T power
line connection
normal?
Yes
R,S,T line
Is the operation normal?
Self-diagnosis function
Cause of error
• Inverter PCB is abnormal
• One of the R,S,T line is disconnected
• Connection order of R,S,T line is changed
No
Repair the connection
No
Check and replace
inverter PCB
Service Manual 239