– 60 –
(3) Only the indoor motor fan does not operate
<Primary check>
1. Is it possible to detect the power supply voltage (AC220–240V) between
c
and
d
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 10 minutes after it is turned
on, to prevent a cold air from blowing in.)
Turn off indoor unit and
remove connector from motor.
Then start to operate indoor
unit with remote controller.
Turn off indoor unit and
remove connector from motor.
Then push [ ] button
on remote controller to stop
flashing lamp on indoor unit.
Start to operate the indoor unit
in except heating operation.
At this time, is it possible to detect
DC 1V or more between 5
+
and 3
–
of motor connector (CN31)?
(Check this condition within
15 seconds after starting unit.)
Turn off power supply once,
and turn it on again.
Start to operate indoor unit
in cooling operation
at airflow level “LOW”.
Change airflow level
to “HIGH”.
Fan motor
operates normally.
Replace indoor
fan motor.
Replace main
P.C. board.
Replace
bearing.
Does indoor fan operate?
Is it possible to change
airflow level to “HIGH”?
Is it possible to rotate cross-flow
fan by hand properly?
Does fan motor
continue to operate?
Is it possible to detect
DC 15V between 4
+
and 3
–
of motor connector (CN31)?
Is it possible to detect
DC 310–340V between
1
+
and 3
–
of motor
connector (CN31)?
Is it possible to detect
DC 1V or more between
5
+
and 3
–
of motor
connector (CN31)?
(Motor connection condition)
Is it possible to detect DC 15V
between 4
+
and 3
–
of
motor connector (CN31)?
Turn off indoor unit and rotate cross-flow
fan by hand when the unit is on standby.
At this time, is it possible to detect
DC 1V or more between 5
+
and 3
–
of motor connector (CN31)?
Start to operate the indoor
unit in except heating operation.
At this time, is it possible to detect
DC 1V or more between
5
+
and 3
–
of motor
connector (CN31)?
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
FILE NO. SVM-12087
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