Low Voltage/High Voltage - LG multi V PLUS Service Manual

Fault diagnosis and Trouble shooting guide
Error
Error Item
Display No.
Low voltage/high
25
voltage
147
149
Trouble shooting Flow
Is input power normal?
Check or replace the PCB.
Meaning
Input voltage is More
than 487V or less than
270V
No
Yes
Self-diagnosis function
Major Error Occurrence Cause
• Abnormal input power
• Defective voltage detection circuit
Check input power.
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