LG Single "A" Service Manual page 105

5. Trouble Shooting
6.21 Check code Trouble shooting CH51, CH60
Display
Title
code
51 Over capacity
EEPROM
60
Check sum
Check Flow Chart (CH51)
Check the
indoor unit combination
Check the outdoor
unit max combination
Is it normal ?
Yes
Check PCB
Check Flow Chart (CH60)
Check the the
connection port.
Is it normal ?
Yes
Change EEPROM
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Cause of error
• Over capacity
Combination
• Check sum error
No
Correct connection
No
Correct connection
- 104 -
Check point & Normal condition
• Check the indoor unit capacity.
• Check the combination table.
• Check the connection port.
• Check the poor soldering.
LGE Internal Use Only