LG Single "A" User Manual

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Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
5. Trouble Shooting
6.7 Check code Trouble shooting CH03
Check the Volt.
Indoor Unit
V
12Vdc
12V
(RD)
S
(YL)
GND
(BR)
Check the Volt.
Wired R/C
V
12Vdc
S
(YL)
12V
(RD)
GND
(BR)
Check the wire
connection(Open /
Short / Miswirring)
Is it normal ?
Check the volt. of main
PCB power source.
(DC 12V,DC 5V)
Is the soldering state
of connector is normal?
Yes
Yes
No
Correct connection
Or change connection wire
Is it normal ?
Yes
No
Correct connection
Or change the PCB
Check the installation of
wired remote controller.
(Noise interference)
Is it normal ?
No
Adjust the state
of installation
No
Re-soldering component
Or change the PCB
Check Flow Chart
CN-REMO
03
Communication Error
(Wired remote controller)
• Connector connection
error
• Faulty PCB / Remote
controller
• Connection wire break
• Connection of wire
• Main PCB Volt. DC12V
• Noise interference
Display
code
Title Cause of error Check point & Normal condition

LG Single "A" Specifications

General

Brand	LG
Model	Single "A"
Category	Air Conditioner
Language	English