Toshiba RAS-B07J2KVSG-E Service Manual page 97

(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?
NO
Is fuse (F02)
of indoor control
board blown?
NO
NO
Does check
operation LED flash?
YES
Start to operate
indoor unit in cooling
operation at airflow
level "LOW".
Does indoor
fan operate?
YES
Change airflow level
to "HIGH".
A
Is it possible to detect
DC 1V or more between
– of motor
+ and
3
5
connector (CN36) ?
YES
YES
Does check connecting
cable or power supply
cord complely?
YES
Does check
5V at display unit?
YES
Is it possible to detect
NO
DC 311–340V between
+ and – of motor
1 3
connector (CN36)?
YES
(Motor connection condition)
Is it possible to detect DC 15V
between + and – of
4 3
motor connector (CN36)?
YES
Start to operate the
indoor unit in except
heating operation.
At this time, is it possible to
detect DC 1V or more between
+ and – of motor
5 3
connector (CN36)?
YES
B
NO
Reconnecting the
NO
in terconnection cable
and terminal block
NO
Does check 5V
at main P.C board?
YES
Replace
display unit
NO
Turn off indoor unit and remove
NO
connector from motor.
Then push [
on remote controller to stop
flashing lamp on indoor unit.
Is it possible to detect
DC 15V between
and – of motor
3
connector(CN36)?
YES
Turn off indoor unit and
NO
remove connector from motor.
Then start to operate indoor
unit with remote controller.
Start to operate the
indoor unit in except
heating operation.
At this time, is it possible
to detect DC 1V or more
between + and
5
of motor connector(CN36)?
(Check this condition within
15 seconds after
starting unit.)
YES
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Q R
and on the terminal block?
NO
] button
NO
+
4
NO
–
3
Replace indoor
fan motor.
Replace main
P.C. board.