SiMT041311E
Troubleshooting
Service Diagnosis
166
Troubleshooting
Cool it down.
NO
Check the connector for proper
connection.
OK?
YES
YES
YES
YES
YES
YES
NO
YES
NO
NO
NO
NO
NO
NO
YES
Measure the resistance between
the heater connectors.
Turn on the power again and start
the humid heating trial operation.
Is the heater resistance
appropriate?
Does the humidifying rotor
motor run?
Does the air blow
out from the
hygroscopic fan?
Does the air blow out
from the humidifying
fan?
Is there foreign matter?
Check No.01
Is the resistance of
humidifying thermistor
within normal
range?
Is the heater cooled
well after the power
turned off?
*Include inside the humidifying
hose and indoor air supply filter.
Caution
(R19690)
At normal temperature:
97
Ω
± 10%
[ ]
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Replace the outdoor unit
PCB.
Remove the foreign matter.
Refer to
P9
troubleshooting.
Replace the humidifying
rotor motor.
Go to
Check No.19.
Replace the thermistor.
Replace the heater ASSY.
Reconnect the connector
properly.
*At normal humid heating
operation instead of trial
operation, the ON timing of
the hygroscopic fan may
delay 20 min. at maximum.
Check No.01
Refer to P.181
Check No.19
Refer to P.189