Toshiba RAS-10SKVR-E2 Service Manual page 70

(3) Only the indoor motor fan does not operate
<Primary check>
1. Is it possible to detect the power supply voltage (AC220–240V) between
2. Does the indoor fan motor operate in cooling operation?
(In heating operation, the indoor fan motor does not operate for approximately 10 minutes after it is turned
on, to prevent a cold air from blowing in.)
Turn off power
supply once, and
turn it on again.
YES
Does fan motor
continue to operate?
Start to operate
indoor unit in cooling
operation at airflow
level "LOW".
NO
Does indoor
fan operate?
YES
Change airflow level Change airflow level Change airflow level
to "HIGH". to "HIGH". to "HIGH".
NO
Is it possible to
change airflow level
to "HIGH"?
YES
Fan motor
operates normally.
Control P.C. board failure
Dose AC120V or
higher voltage apply to
between red and black lead
of the motor?
Turn OFF the power
Is it possible to
rotate cross-flow fan by
hand properly?
Turn OFF the power
Stop the operation
When rotating the
cross-flow fan by hand
at the operation stop
condition, is the rotation signal
(DC+12V 0V) detected between
2 (Purple lead) and 3
(Blue lead) of the motor
connector (CN33)
(1 pulse / 1 revolutio).
Motor circuit (D301, IC31, Q301
12V power circuit (T101) failure.
NO
YES
NO
YES
NO
NO
YES
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FILE NO. SVM-10029
Q R
and on the terminal block?
Replace main
P.C. board.
Replace
bearing.
Replace the fan motor.
Replace the P.C. board.