LG AS-W096ERH1 Service Manual page 58

Troubleshooting Guide
• 9K / 12K
Error code Description
Heat-sink Temp. is over
95°C
4
Heat-sink TH.
is open or short
Check flow
Heat-sink TH is connected to
outdoor PCB assembly?
No
- Connect to CN-TH2 in
outdoor PCB assembly
58 Room Air Conditioner
• Heat-sink TH. is damaged(short or open).
• Heat-sink Temp. is over 95°C
• Damage or defect on the sensing circuit of outdoor pcb assembly.
(R01H, R02H, C01H)
YES
Heat-sink TH. in INV-IC is
Right ?
No
Check heat-sink TH.
- Measure resistance of TH.
(about 10k Ω at 25 °C)
Cause of error
YES
Sensing circuit of outdoor
pcb is right ?
No
- Check soldering state of
R01H, R02H, C01H