Toshiba RAS-M10GDV-E Service Manual page 48

Toshiba ilmalämpöpumput myy, huoltaa ja asentaa: Jäähdytinpalvelu RefGroup Oy.
(2) Power is not turned on though Indoor P.C. board is replaced
<Confirmation procedure>
Turn on power supply.
Does operation lamp flash?
YES
(3) Only the indoor fan does not operate
<Preliminary check>
1. Is the socket voltage 220–240V?
2. Does not the indoor fan rotate in cooling operation?
(In heating operation, the indoor fan does not rotate to prevent cool air blowing when the unit has been activated.)
Turn ON the power.
("REMOTE CONTROLLER" position)
Does the stop at the
operation stop condition?
YES
Start operation
at HIGH cooling.
Does the fan rotate?
YES
Change the setting
to LOW cooling.
Does the rotating
speed of the fan lower?
YES
Normal
NO
Is wired correctly to white and black
lead wires of terminal block?
NO
Control P.C. board failure.
NO
Are lead wires of P02 and
P03 connected to MF capacitor?
Does AC120V or
higher voltage apply to between
red and black lead of the motor?
Turn OFF the power.
Is it possible to rotate the
Multi-blade fan by hand?
Turn ON the power.
NO
Stop the
operation.
When rotating the Multi-blade
fan by hand at the operation stop
condition, is the rotation signal
(DC+12V 0V) detected between
(Purple lead) and
of the motor connector (CN14)?
(3 pulse / 1 revolution).
Motor circuit (D05, D06, IC01, Q07) or
12V power circuit (Q01, D02) failure.
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NO
YES
NO
YES
NO
YES
NO
YES
NO
2
(Blue lead)
3
YES
Correct wiring.
To item of
"Power is not turned on".
Replace the P.C. board.
Connect the lead wires properly.
Motor control circuit (IC01, IC05,
D06, Q07) or 12V power circuit,
(Q01, D02) failure.
Replace the P.C. board.
Replace the Multi-blade fan.
Replace the fan motor.
Replace the P.C. board.