Refrigerant Auto Charging - LG MULTI V IV ARNU07GTU 2 Series Service Manual

4.3 Refrigerant Auto Charging

This function charge suitable refrigerant amount in system through cycle operation automatically.
If the refrigerant amount is inaccurate by service, pipe leakage, etc, can use this function.
Use refrigerant charging, if service only.
Put the refrigerant by calculating the refrigerant amount surely, if install.
Refrigerant charging time can be different following the charging refrigerant amount.
( Charging time : about 3 minute/kg )
Cooling
Blowing mode for 1 minute
Heating
Start system full room operation
Operate refrigerant amount judgment mode
Start refrigerant charging
Reverse switching, indoor unit OFF
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Only for training and service purposes
Start
No
Temperature/load
condition suitability
Yes
(25minute operation)
No
Cycle stability
Yes
No
Refrigerant lack
Yes
Expression
SW02C,SW03C
No
( , ) Push Button
over 3 second
Yes
No
Refrigerant amount
Yes
End
No
12 minute over after
E10 expression
- 33 -
Function
No
Operation time
40minute over
Yes
Cycle instability
LGE Internal Use Only