LG R410A Service Manual page 165

Error
Error Contents
Code
Outdoor Unit air
temperature sen-
44
sor error
Error
Error Contents
Code
45(Heat
exchanger The pipe sensor
Upper parts) error of the
Outdoor Unit's heat
48 (Heat
exchanger
exchanger
Lower parts)
Error
Error Contents
Code
Comp. suction
46
temp. sensor error
I Defect inspection method s
1) Check the temp. sensor connecting condition and also the lead wire connecting condition.
2) Check whether the temp. sensor resistance value is normal ? Otherwise, replace the sensor.
- Air temp. sensor : 10°C = 20.7kΩ, 25°C = 10kΩ, 50°C = 3.4kΩ
- Pipe temp. sensor : 10°C = 10kΩ, 25°C = 5kΩ, 50°C = 1.8kΩ
3) In case the sensor connection and the resistance value is normal, then please replace the outdoor PCB .
Meaning
Sensor measured value is
not normal
(Open/Short)
Meaning
Sensor measured value is
not normal
(Open / Short)
Meaning
Sensor measured value is
not normal
(Open/Short)
Main Causes
1. Defective connection of the temp.
sensor
2. Defective temp. sensor (Open /
Short)
3. Defective Outdoor Unit PCB
Main Causes
1. Defective connection of the temp.
sensor
2. Defective temp. sensor (Open /
Short)
3. Defective Outdoor Unit PCB
Main Causes
1. Defective connection of the temp.
sensor
2. Defective temp. sensor (Open /
Short)
3. Defective Outdoor Unit PCB
Troubleshooting Guide
Error display
position
Concerned
Remote con-
troller
Panel Display
Outdoor unit
Error display
position
Concerned
Remote con-
troller
Panel Display
Outdoor unit
Error display
position
Concerned
Remote con-
troller
Panel Display
Outdoor unit
Service Manual 165