LG AS-W096E1G0 - Page 56

Service Manual 61
Troubleshooting Guide
• 9K / 12K
4
• 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)
Heat-sink Temp. is over
95°C
Heat-sink TH.
is open or short
Heat-sink TH. in INV-IC is
Right ?
Sensing circuit of outdoor
pcb is right ?
YES
No
Check heat-sink TH.
- Measure resistance of TH.
(about 10k Ω at 25 °C)
Heat-sink TH is connected to
outdoor PCB assembly?
YES
No
- Connect to CN-TH2 in
outdoor PCB assembly
No
- Check soldering state of
R01H, R02H, C01H
Check flow
Cause of error
4
• Heat-sink TH. in outdoor pcb is open or short
• Heat-sink Temp. is over 95°C
• Damage or defect on the sensing circuit of outdoor pcb assembly.
(R01H, R02H, C01H)
Heat-sink Temp. is over
95°C
Heat-sink TH. in outdoor
pcb
is open or short
Heat-sink TH. in outdoor
pcb is Right ?
Sensing circuit of outdoor
pcb is right ?
YES
No
Check heat-sink TH.
- Measure resistance of TH.
(about 10k Ω at 25 °C)
No
- Check soldering state of
R01H, R02H, C01H
Check flow
YES
Heat-sink TH. Is connected
to CN-TH2 in outdoor pcb ?
No
Connect to CN-TH2 in
Outdoor pcb assembly
Description Cause of error Error code
Description Error code
• 18K