LG THERMA V AHBW076A0, Service Manual, Page: 82 / 98

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Display
code
Title Cause of error Check point & Normal condition
41 D-pipe sensor (Inverter)
• Open / Short
• Soldered poorly
• Internal circuit error 1. Bad connection of thermistor connector
2. Defect of thermistor connector (Open/Short)
3. Defect of outdoor PCB(Inverter)
44 Air sensor
• Open / Short
• Soldered poorly
• Internal circuit error 1. Bad connection of thermistor connector
2. Defect of thermistor connector (Open/Short)
3. Defect of outdoor PCB(Inverter)
45
Condenser Mid-
pipesensor
• Open / Short
• Soldered poorly
• Internal circuit error 1. Bad connection of thermistor connector
2. Defect of thermistor connector (Open/Short)
3. Defect of outdoor PCB(Inverter)
46 Suction Pipe sensor
• Open / Short
• Soldered poorly
• Internal circuit error 1. Bad connection of thermistor connector
2. Defect of thermistor connector (Open/Short)
3. Defect of outdoor PCB(Inverter)
48
Condenser Out-pipe
sensor
• Open / Short
• Soldered poorly
• Internal circuit error 1. Bad connection of thermistor connector
2. Defect of thermistor connector (Open/Short)
3. Defect of outdoor PCB(Inverter)
Ω
Check Point
1. Estimate the resistance of each sensor.(Unplugged)
2. Check the value of the resistor of thermistor.
D-pipe sensor (Inverter) : Normal Value of the resistor is 200kΩ at 25℃
Air sensor : Normal Value of the resistor is 10kΩ at 25℃
Cond. Mid-pipe sensor : Normal Value of the resistor is 5kΩ at 25℃
Suction pipe sensor : Normal Value of the resistor is 5kΩ at 25℃
Condenser Out-pipe sensor : Normal Value of the resistor is 5kΩ at 25℃
Is sensor connected to
PCB(Inverter) correctly?
Is sensor value correct?*
Connect sensor to PCB(Inverter)
correctly
Replace sensor
Replace corresponding
PCB(Inverter)
Yes
No
No
Yes
n
Error Diagnosis and Countermeasure Flow Chart