Fault diagnosis and Trouble shooting guide
Failure Checking Method
Check connection status between
PCB and sensor
No
Check the indoor
unit PCB
No
Replace the sensor
* See the Temperature Resistance Table
Yes
Yes
Error Item
Error Display
No.
Major Error Occurrence Cause
Meaning
Air temperature sensor
of the indoor unit
01
• Poor sensor connection
• Short or open of sensor
• Defective indoor PCB
Short or open of
indoor unit sensor
Inlet pipe temperature
sensor of the indoor unit
02
Outlet pipe temperature
sensor of the indoor unit
06
Is connection status of
the sensor normal?
Is sensor resistance
normal?
Pull the sensor out and then measure
sensor resistance
Reconnect the sensor at
accurate position
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