LG AMNH076LQL0 Service Manual page 193

16) Troubleshooting CH67, CH105
Display
Title
code
Outdoor fan
67
lock
Communication error
between main PCB and
105
fan PCB
Check Point
• CH 67
1. Check the install condition for fan.
Cause of error
• Outdoor fan is not oper-
ating
• Communication error
between main PCB
and fan PCB
• CH 105
1. Is communication line between the main PCB and the
fan PCB normal?
2. Is the communication LED on?
Troubleshooting Guide
Check point & Normal condition
• Check the fan condition.
• Check the fan connector
• Short or fusing of communication line
• Poor outdoor unit PCB
• Power input when the DC link capacitor discharges
Service Manual 199