LG MULTI V IV ARNU07GTU 2 Series - Page 112

Troubleshooting Guide
- 112 -
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Wiring Fault Case
Indoor Unit
Communication PCB
❈ 1 time/10 sec Turn on/off
Indoor Communication Part
Outdoor Unit
Communication PCB
Communication Part in Main PCB
Communication Part in External PCB
❈ Remark : IDU A/IDU B