LG ATNH09GRLE2 Svc Manual page 134

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