Fault Diagnosis And Trouble Shooting Guide; Failure Checking Method - LG multi V PLUS Service Manual

Self-diagnosis function

Fault diagnosis and Trouble shooting guide

Error Display
Error Item
No.
Air temperature sensor
01
of the indoor unit
Inlet pipe temperature
02
sensor of the indoor unit
Outlet pipe temperature
06
sensor of the indoor unit

Failure Checking Method

Check connection status between
PCB and sensor
Is connection status of
Pull the sensor out and then measure
sensor resistance
262 Trouble Shooting Guide
Meaning
Short or open of
indoor unit sensor
the sensor normal?
Yes
Is sensor resistance
normal?
* See the Temperature Resistance Table
Yes
Check the indoor
unit PCB
Major Error Occurrence Cause
• Poor sensor connection
• Short or open of sensor
• Defective indoor PCB
No
Reconnect the sensor at
accurate position
No
Replace the sensor