Toshiba SUPER MMK-AP0073H (IN) Service Manual page 116

Check code
[P12] / [11]
(Current code / AI-NET)
Turn off breaker once.
Turn on breaker after
approx. 10 seconds.
NO
Does fan stop under
condition of operation stop?
YES
Start cooling operation
with LOW setup
NO
Does fan rotate?
YES
Change setup of
cooling wind to HIGH.
Is voltage more than DC 1V supplied
between
(CN210) when turning on the motor
(except heating mode) from remote controller?
NO
Does rpm of fan increase?
YES
(No. of rotation return signal) generate
between
(CN210) when rotating cross-flow fan with
hands under condition of operation stop?
Fan motor is normal.
Check code name
Indoor fan motor error
Is voltage more than DC1V
supplied between + and
5
of motor connector (CN210)?
YES
Is voltage more than DC280V
supplied between + and
1
of motor connector (CN210)?
YES
(Motor connection status)
Is voltage DC15V supplied
between + and
4 3
motor connector (CN210)?
YES
+ and – of motor connector
5 3
(Check it within 15 seconds
after start of operation.)
YES
(except heating mode) from remote controller?
Does cross-flow fan
rotate normally with hands?
YES
Does voltage 0 to 15V
+ and – of motor connector
6 3
YES
1. Fan motor connector error
2. Fan motor error
3. Indoor P.C. board error
4. Cross-flow fan bearing error
NO
–
3
NO
–
3
Stop operation, turn off
NO
breaker, turn on breaker again,
– of and then stop operation from
remote controller.
Is voltage more than
DC280V supplied between
+ and
4
connector (CN210)?
YES
Stop operation andtake off
plug socket.
NO
Remove motor connector,
connect plug socket again,
and then stop the operation
from remote controller.
Is voltage more than DC 1V supplied
between + and – of motor connector
5 3
(CN210) when turning on the motor
(Check it within 15 seconds
after start of operation.)
NO
NO
Repair bearing
of cross-flow fan.
NO
116
Cause of operation
NO
– of motor
3
YES
indoor fan motor.
Replace indoor main P.C. board
(MCC-1510).
Replace