LG CT09F Service Manual page 130

6.7 Troubleshooting Outdoor Error
CH 05/53 (Indoor/Outdoor Device Communication Error) → Detection by indoor devices
Checking Method of Outdoor PCB
Checking whether outdoor PCB is
Purpose
Check reactor connection state.
Check fuse state
Check whether outdoor PCB LED is lighted.
Division
2 kW
3 kW
4.5 kW
6 kW
7 kW
Items for checking
normal
Lighting of LED, fuse damage, and reactor
connection error
Fuse Point
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Part 4 Trouble Shooting