LG ACHH Series Manual page 98

Error code check
n Inverter compressor and static speed compressor
When replacing a compressor, please follow the procedure to replace
• Before replacing a compressor, please judge if it is an inverter compressor failure or a static speed compressor failure and
then replace.
• Especially replacing an inverter compressor 2 to 3 times, please replenish FVC68D(PVE).
1) Please confirm if the main power is off
2) Please remove refrigerant by connecting a manifold gauge to a service valve
CAUTION
• Since oil can be discharged with when removing refrigerant, please discharge the refrigerant slowly
3) Please remove a compressor terminal cover and then remove a power line.
4) Please remove a discharge temperature sensor of a compressor and a crankcase heater
5) Please remove an installation nut of a compressor
6) Please separate the welding part of pipes connecting to a compressor by heating. (Suction pipe, discharge pipe)
7) Please replace a compressor
CAUTION
• When replacing a compressor, please be careful not to hurt your waist
8) Please install the pipe separated at 7) by re-welding with the compressor
9) Please close the service valves of a liquid tube and gas tubes and check if there is a leakage or not by injecting nitrogen
gas 38kgf/cm 2 g through a check joint of low pressure and high pressure sides
10) Please degas the nitrogen gas
11) Please open a manifold gauge and then vacuum
12) Please install a crankcase heater
CAUTION
• When installing a crankcase heater, please make sure differentiate two crankcase heaters and then
install correct valve heater corresponding the compressor
13) Please install a discharge temperature sensor of a compressor and its insulator
14) Please connect a power line by a compressor terminal
CAUTION
• When connecting a phase, please be careful not to make a reverse phase and Omitting
15) If finishing vacuuming, please recharge the refrigerant
16) Please confirm if the power line is correctly connected to the compressor terminal and then check insulation resistance
Please cover a compressor terminal cover, turn the power on and then check if current is flew through the crankcase
heater
17) Please operate the product and then check if operating normally
- 98 -