Drain Pump Error - LG multi V PLUS Service Manual

Self-diagnosis function
Fault diagnosis and Trouble shooting guide
Error Display
Error Item
No.
04

Drain pump error

Failure Checking Method
Is the drain pump
submerged in condensed
water?
Yes
Is drain pump power
connection normal?
Yes
Is internal drain hose normal?
Yes
Is PCB output signal normal?
Yes
Check or replace the
drain pump
264 Trouble Shooting Guide
Meaning
The float switch opens since
drain of condensed water is
not done
No
Repair the
No
connection
Check or
No
reinstall the
drain hose
No
Major Error Occurrence Cause
• Malfunction of floater switch of the
drain pump
• Malfunction of the drain pump
• Defective indoor unit PCB
Is the float switch normal?
Yes
Check or replace
the PCB
No