LG ARUN Series Service Manual page 42

Function
I Example. Slave ODU Inv Comp failure
Heating mode
Comp failure unit
1. Close liquid pipe and common pipe of the unit for pump out operation.
2. Operate pump out
3. Close gas pipe of unit after completion
4. End pump out
5. Close common pipe
6. Eliminate refrigerant in common pipe after opening the common pipe of corresponding ODU.
Replace compressor and perform vacuum.
7. Add the refrigerant with auto charging function
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Only for training and service purposes
Slave
gas liquid
pipe pipe
Heating mode
Master
gas
pipe
- 42 -
liquid
pipe
LGE Internal Use Only