LG Single "A" User Manual

- 89 -
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
5. Trouble Shooting
6.6 Check code Trouble shooting CH01, CH02, CH06
Ω
10kΩ
Unplugged Plugged
Check the resistance
Check the voltage
V
2.5Vdc
Unplug the sensor
on Indoor unit PCB
Estimate the Voltage
of each sensor.
Is the voltage of
the sensor 2.5Vdc
at 25˚C
Repair or Change the PCB.
Check the
Connector connection
Is it normal ?
Estimate the resistance
of each sensor.
Plug the sensor
on Indoor unit PCB
Is the resistance of
the sensor 10Ω /
5kΩ at 25˚C?
Yes
Yes
No
Correct connection
Yes
No
Correct connection
No
Correct connection
Check Flow Chart
01
02
06
Indoor air sensor
Indoor inlet pipe sensor
Indoor outlet pipe sensor
• Connector connection error
• Faulty PCB
• Faulty sensor (Open / Short)
• Connector connection error
• Faulty PCB
• Faulty sensor (Open / Short)
• Connector connection error
• Faulty PCB
• Faulty sensor (Open / Short)
Normal resistor : 10KΩ/ at 25˚C (Unplugged)
Normal voltage : 2.5Vdc / at 25˚C(Plugged)
Refer to sensor resistance table.
Normal resistor : 5KΩ/ at 25˚C(Unplugged)
Normal voltage : 2.5Vdc / at 25˚C(Plugged)
Refer to sensor resistance table.
Normal resistor : 5KΩ/ at 25˚C(Unplugged)
Normal voltage : 2.5Vdc / at 25˚C(Plugged)
Refer to sensor resistance table.
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