Mitsubishi Electric MJ-E14CG-S1-IT Service Manual page 14

E
Only a small quantity of
water is dehumidified.
NO
The unit is normal.
14
Is the operating environment
YES
low humidity and low
temperature?
NO
Is there any dust on the room
temperature and humidity sensor?
NO
Check if there is no disconnection or
contact failure of the connector ( P10 ) and
connector pins of power control board.
OK
Check the resistance of the room
temperature and humidity sensor.
(P10 connector)
Normal:Between the pin3 and pin4
Abnormal:Open or short
OK
Dehumidication may not be
YES
possible in low humidity and
low temperature environments.
Explain the performance
curve on P9.
YES
Remove the dust from the room
temperature and humidity sensor.
NG
Insert the connector and
connector pins securely.
OK
NG
Replace the room temperature
and humidity sensor.
OK
OK
OK