LG UM48 N34 - Page 134

- 134 -
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4. Trouble Shooting
Items Contents
Purpose
Prevention of phase unbalance and prevention of reverse rotation of
constant-rate compressor
Condition for Generation Main power wiring fault
3FTFUUJOHQPXFSTPVSDF8BJUGPSNJOVUFTBGUFSUVSOJOHUIFQPXFSPGUIFQSPEVDUPGG
Items for checking Sub-items for checking
Installation Checking N-phase
Checking for open
and reverse phase
Fuse damage
(R and S phases)
AC load
Inverter PCB
Checking for power
phase loss
Ⲽ3FGFSUPQBHF Ⲽ3FGFSUPQBHF
Ⲽ3FGFSUPQBHF
6.7 Troubleshooting Outdoor Error
CH 54 (Open and Reverse Phase Error)