Toshiba RAS-24UKHP-ES-1 Service Manual page 55

9-6-2. Only indoor fan motor does not operate.
<Primary check>
(1) Is it possible to detect the power supply voltage (200 – 240V) between 1 and 2 on the terminal block?
(2) Does the indoor fan motor operate in cooling operation?
(In heating operation, the indoor fan motor does not operate for approximately 5 minutes after it is turned on,
to prevent a cold air from blowing in.)
Turn off power
supply once, and
turn it on again.
Does
YES
Fan motor
continue to
operate?
NO
Start to operate
indoor unit in
cooling operation
at airflow level
LOW .
NO
Does indoor
310 − 340V between 1e and
fan operate?
3d of motor connector (CN10).
YES
Change airflow
(Motor connection condition)
level to High .
Is it possible to detect DC 15V
between 4e and 3d of motor
Start to operate the indoor unit
Is it possible to
NO
change airflow
level to High ?
YES
Is it possible to rotate cross-flow
Turn off indoor unit and rotate
cross-flow fan by hand when the
Fan motor
unit is on standby. At this time,
operates
is it possible to detect DC 1V
normally.
or more between 5e and 3d
Is it possible to detect
DC 1V or more between
5e and 3d of motor
connector (CN10).
YES
Is it possible to detect DC
YES
connector (CN10).
YES
in except heating operation.
At this time, is it possible to
detect DC 1V or more
between 5e and 3d of
motor connector (CN10)?
fan by hand properly?
of motor connector (CN10).
YES
NO
NO
Turn off indoor unit and
remove connector from
motor. Then press
NO
START/STOP button on
remote control to stop
blinking lamp on indoor unit.
Is it possible to detect DC
15V between 4e and 3d
NO
of motor connector (CN10).
Turn off indoor unit and
remove connector from
motor. Then start to
NO
operate indoor unit with
remote control.
Start to operate the
indoor unit in except
NO
heating operation. At this
time, is it possible to detect
DC 1V or more between
5e and 3d of motor
connector (CN10)? (Check
this condition within 15
seconds after starting unit.)
YES
– 53 –
FILE NO. SVM-03009
Replace indoor
fan motor.
Replace main
P.C. board.
NO
Replace bearing.