Daikin SiBE04-624_B_FTXR-E Service Manual page 143

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