Service manual

34
Turn off power
supply once, and
turn it on again.
Does
compressor
continue to
operate?
Start to operate indoor
unit in cooling
operation at airflow
level “ LOW” ,wait
three minutes..
Does indoor
fan operate?
Fan motor
operates
normally.
Is it possible to detect AC
220V between
pin(high/middle/low) and
pin(common) of motor
connector .
Replace indoor
fan motor.
Replace main
P.C. board.
Replace
bearing.
YES
YES
YES
NO
NO
NO
Turn off indoor unit and rotate
cross-flow fan by hand when the
unit is on standby.Is it possible to
rotate cross-flow fan by hand
properly?
Only indoor fan motor does not operate.
Is capacitor of indoor fan ok?
YES
NO
YES
Replace
capacitor
NO
<Primary check>
(1) Is it possible to detect the power supply voltage (200-240V) between L and N on the terminal
block?
(2) Does the indoor fan motor operate in cooling operation?