LG ARNU05GL1G2, Service Manual

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Only for training and service purposes
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Function
4.5 Refrigerant amount automatic judgment
Ability to judge the system's refrigerant automatically through the system operation.
Function to Judge the refrigerant shortage and excess and can be used with refrigerant auto charging function.
Yes
Yes
Yes Yes
No
No
No
Start
End
Fan mode for one minute
Start system full room operation
(15minute operation)
Refrigerant amount judgment
Cycle unstable
Operation stopped and the display of results
Check Temp. Condition
Check Stable Condition
After 40minutes.
End
Cooling
Heating
• The numeral on 7-segment is the result value of the amount
of refrigerant which is the degree of hyperactivity or lack of the
percentage value about current amount of refrigerant per the
total amount of refrigerant.
ex1)
→
20% refrigerant hyperactivity
→
need to remove
ex2)
→
20% lack refrigerant
→
need to charge
ex3)
→
Don't need to adjustment
• If it is out of the Indoor units load and outdoor guarantee temperature range, can end Refrigerant amount automatic judg-
ment.
- Indoor unit load range : 80~130%
- Outdoor warranty temperature range(cooling: 0~43℃, heating:-10~24℃)
• although 15minutes have not elapsed during full room operation indoor unit, amount of refrigerant is judged directly in spe-
cial case.
• Press SW04C(X: Cancel) button and down dip switch after function end.