LG AS-W0964DH0 Service Manual page 59

• 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
• 18K
Error code Description
Heat-sink Temp. is over
95 C
4
Heat-sink TH. in outdoor
pcb is open or short
Check flow
Heat-sink TH. Is connected
to CN-TH2 in outdoor pcb ?
No
Connect to CN-TH2 in
Outdoor pcb assembly
• 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 at 25 C)
• 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)
YES
Heat-sink TH. in outdoor
pcb is Right ?
No
Check heat-sink TH.
- Measure resistance of TH.
(about 10k at 25 C)
Troubleshooting Guide
Cause of error
YES
Sensing circuit of outdoor
pcb is right ?
No
- Check soldering state of
R01H, R02H, C01H
Cause of error
YES
Sensing circuit of outdoor
pcb is right ?
No
- Check soldering state of
R01H, R02H, C01H
Service Manual 59