LG CT09F - Page 117

Part 4 Trouble Shooting
- 117 -
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Items for
checking
Sub-items for
checking
Checking
power source
Checking
for
over-load
operation
Checking
compressor
Checking
PCBA
Checking
input voltage
Checking
outdoor
devices for
shielding
Checking
refrigerant
for over/shorts
Checking
compressor
wiring
Checking
power
connection
state
Checking
outdoor
fan operation
Checking
compressor
phase
resistance
Checking
pipes
for Bending /
blocking
Checking
compressor
insulation
resistance
Checking EEV
for motion
❈ Check for AC 190~260 V
❈ Manifold gauge
Flow of trouble diagnosis
Checking
IPM
connection
state
Checking
single
unit of IPM
Checking
Compressor
current
detection circuit
Checking DC
link voltage
❈ Checking screws
for no connection or
unfastening
6.7 Troubleshooting Outdoor Error
CH 29 (Compressor Over Current)