Multi F Four-Way Ceiling Cassette Service Manual

Part 5. Trouble Shooting
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Only for training and service purposes
LGE Internal Use Only
Check Point
• CH 51
1. Check the indoor unit capacity.
2. Check the combination table.
Display
code
Title Cause of error Check point & Normal condition
51 Over capacity • Over capacity Combination
• Check the indoor unit capacity.
• Check the combination table.
Model Gross max.capacity Max.single indoor unit capacity
A4UW36GFA0 48k 24k
A8UW54GFA0 73k 36k