LG CT09F Service Manual page 112

6.7 Troubleshooting Outdoor Error
CH 26 (Compressor Starting Failure)
Flow of trouble diagnosis
Items for
checking
Checking
power source
Checking
for
over-load
operation
Checking
compressor
Checking
PCBA
Checking
Checking
input voltage connection
❈ Check for AC 190~260 V
Checking
Checking
outdoor
devices for
fan operation
shielding
Checking
refrigerant
for over/shorts
❈ Manifold gauge
Checking
Checking
compressor
compressor
phase resis -
wiring
Checking
Checking
IPM
connection
unit of IPM
state
❈ Checking screws
for no connection or
unfastening
- 112 -
Sub-items for
checking
power
state
Checking
pipes
outdoor
for Bending /
blocking
Checking
compressor
insulation
tance resistance
Checking
Compressor
single
current
detection circuit
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Part 4 Trouble Shooting
Checking EEV
for motion
Checking DC
link voltage