LG Multi-Inverter Service Manual page 71

4. Trouble Shooting
Display
Title
code
51 Over capacity
EEPROM
60
Check sum
Model
A2UW146FA3
A2UW166FA0
A2UW166FA1
A3UW186FA0
A3UW216FA3
A4UW246FA3
Check Point
• CH 51
1. Check the indoor unit capacity.
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Only for training and service purposes
Cause of error
• Over capacity
Combination
• Check sum error
Gross max. capacity
21k
24k
33k
Check point & Normal condition
• Check the indoor unit capacity.
• Check the combination table.
• Check the PCB ASM P/No.
• Check the poor soldering.
Max. single indoor unit capacity
12k
18k
• CH 60
1. Check the insertion condition of EEPROM.
2. Check the poor soldering
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LGE Internal Use Only