Toshiba RAS-10SK-E, RAS-10SKX, RAS-10SAX Only the Indoor Fan does not Operate, Check procedure

9-3-6. Only the Indoor Fan does not Operate

< Check procedure >

Shut off the power supply once.

Turn the power supply.

Does the fan		NO
stop in no operating			Control PC board is defective.	Replace the PC board.
status?
	YES

Start the operation with low fan setting in cool operation.

Does the fan rotate?

YES

	Is the voltage			Shut off the power supply,
	measured DC35V
NO			NO	and turn it on after
	between 1 (red lead wire, +)
				disconnecting the motor
	and 2 (black lead wire, –)
				connector (CN10)* from
	of the motor connector
	(CN10) ?			the PC board.
		YES

Shut off the power supply.

Change the setting of
		Does the cross
cooling to high fan.					NO
		flow fan rotate
		normally?
			YES
		Turn on the power supply.
Does the fan speed NO		Operation
become higher?		stops
	YES
		Is the rotation signal
		(DC+5V-0V) output between 4
		(blue lead wire) and 2		(black
		lead wire) of the motor connector
		(CN10) when rotating the cross
		flow fan by hand in no operating
		status ? (2 pulses/one turn)
			YES

Repair the bearing of the drain fan.

Is the voltage of DC35V measured

between 1 (red lead wire, +) NO and 2 (black lead wire, –) of

the motor connector (CN10) ?

YES

NO

Replace the PC board.

	Replace the control	Replace the
Normal
	PC board.	fan motor.

*Be sure to disconnect the motor connector CN10 after shut off the power supply, or it will be a cause of damage of the motor.

– 42 –