LG AMNH076LQL0 Service Manual page 27

Troubleshooting Guide
12) Troubleshooting CH51, CH60
Display
Title
code
51
Over capacity
EEPROM
60
Check sum
Model
A2UW146FA0
A2UW146FA1
A2UW186FA0
A3UW186FA0
A3UW246FA0
A4UW246FA0
A4UW306FA0
A6UW406FA0
Check Point
• CH 51
1. Check the indoor unit capacity.
184 Multi type Air Conditioner
Cause of error
• Over capacity
Combination
• Check sum error
Gross max. capacity
21k
24k
30k
33k
39k
52k
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
12K
12k
18K
18K
24K
• CH 60
1. Check the insertion condition of EEPROM.
2. Check the poor soldering