Specifications

SiBE04-624_B Troubleshooting
Service Diagnosis 133
Troubleshooting
Check the connector for proper
connection.
OK?
OK?
Cool the
heater down.
Check No.19
Check the outdoor fan
system.
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
Measure the resistance
between the heater
connectors.
Turn on the power supply 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?
Check No.01
Thermistor resistance check
Is the heater cooled
well after the power
supply turned off?
*Include inside the humidification
hose and indoor air supply filter .
Caution
(R18136)
At normal temperature:
44.6 Ω ± 10%
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Reconnect the connector
properly.
*The humidifying thermistor
is exclusive for fan outlet
temperature.
Replace the thermistor.
Replace the heater ASSY.
Replace the humidifying
thermistor.
Replace the humidifying
rotor motor.
*At humid heating operation
instead of trial operation, the ON
timing of the hygroscopic fan
may delay 20 min. at maximum.
To "
P9" troubleshooting
Remove the foreign matter.
Replace the outdoor unit
PCB.
Check No.01
Refer to P.134
Check No.19
Refer to P.142