LG AMNW07GSJA0 Svc Manual page 160

6.7 Troubleshooting Outdoor Error
CH 54 (Open and Reverse Phase Error)
Items
Purpose
Condition for Generation
Resetting power source: Wait for 3 minutes after turning the power of the product off.
Items for checking
Installation
Fuse damage
(R and S phases)
Inverter PCB
Prevention of phase unbalance and prevention of reverse rotation of
constant-rate compressor
Main power wiring fault
Checking N-phase
Checking for open
and reverse phase
AC load
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Contents
Sub-items for checking
Checking for power
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5. Trouble Shooting
phase loss