LG Multi V CRUN Series Service Manual page 221

Fault diagnosis and Trouble shooting guide
Display
Title
code
01
Indoor unit sensor(air)
Indoor unit sensor
02
(inlet pipe)
Indoor unit sensor
06
(outlet pipe)
Trouble shooting Flow
Confirm the connection between PCB
and temperature sensor
The state of sensor
connection is normal?
Yes
Unplug the sensor and estimate the
resistance of the sensor
The resistance of the
sensor is normal?
Check the indoor
Meaning
It is occurred that the
temperature sensor may
detect abnormal value
• Refer to Temperature resistance Table in appendix
Yes
unit PCB
Self-diagnosis function
Cause of error
• The temperature sensor unplugged
• The sensor may be open or short
• Indoor unit PCB may be poor
No
Reconnect the unplugged
sensor to correct position
No
Replace the sensor
Service Manual 221