LG UU85W U74 - Page 75

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Part 4 Trouble Shooting
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
under/over
charging
with refrigerant
Checking
compressor
wiring
Checking
outdoor
fan operation
Checking
compressor
phase
resistance
Checking pipe
blocking
Checking
compressor
insulation
resistance
Checking
the work
of EEV
※ Check for AC190~260V
※ Refer to manifold gauge
Flow of trouble diagnosis
Checking
outdoor
Temperature
sensor
6.6 Troubleshooting Outdoor Error
CH 32 (Discharge pipe overheating error of Inverter)