Toshiba RAV-HM561KRTP Series Service Manual page 63

[P12 error]
Turn OFF the breaker.
Turn it ON 10 seconds after.
NO
Does fan stop
with operation OFF?
YES
Start cooling
with LOW fan speed.
NO
Does fan rotate?
YES
Change
fan speed to HIGH.
NO
Does
fan speed increase?
YES
Fan motor
is normal.
Is min. 1V DC present
between CN210 pin + and
YES
Is min. 280V DC present
between CN210 pin + and
YES
Is min. 15V DC present
between CN210 pin + and
with motor connected?
YES
Stop operation and turn OFF breaker.
Disconnect CN210, turn ON breaker again,
and then stop operation using remote controller.
Operate indoor unit (except heating)
by remote controller.
Is min. 1V DC present between
CN210 pin + and – ?
(Measure within 15 seconds.)
YES
Stop operation and turn off the breaker.
Discnnect CN210, turn on the breaker,
and then stop operation using remote controller.
Operate indoor unit (except heating)
between CN210 pin
Does cross flow fan
rotate normally by hand?
YES
Rotate the fan by hand
with operation OFF.
Is 0 to 15V DC (rev return signal)
generated between
CN210 pin + and – ?
NO
– ?
NO
– ?
NO
–
Is min. 280V DC present
between CN210 pin
+ and – ?
YES
NO
by remote controller.
Is min. 1V DC present
+ and
(Measure within 15 seconds.)
YES
NO
NO
Replace
indoor unit fan motor.
YES
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Replace
indoor unit fan motor.
Replace indoor unit
MCC-1696 P.C. board.
Replace indoor unit
MCC-1696 P.C. board.
NO
Replace indoor unit
MCC-1696 P.C. board.
Replace
indoor unit fan motor.
NO
Replace indoor unit
MCC-1696 P.C. board.
– ?
Replace
indoor unit fan motor.
Repair cross
flow fan shaft.
Replace indoor unit
MCC-1696 P.C. board.