Toshiba RAS-09LAV-UL, RAS-09LKV-UL, RAS-12LAV-UL, RAS-12LKV-UL 11-4-2Caution at Servicing

FILE NO. SVM-10019

11-4-2 Caution at Servicing

1.After using the service mode of remote controller finished, press the [ ] button to reset the remote controller to normal function.

2.After finished the diagnosis by the remote controller, turn OFF power supply and turn its ON again to reset the air conditioner to normal operation. However, the check codes are not deleted from memory of the microcomputer.

3.After servicing finished, press [CLR] button of remote controller under service mode status to send code "7F" to the indoor unit. The check code stored in memory is cleared.

			Table 11-4-1
Block distinction			Operation of diagnosis function
Check		Check		Air	Display flashing		Action and Judgment
	Block		Cause of operation	conditioner
code		code			error
				status
	Indoor P.C.		TA sensor ; The room	Operation	Flashes when	1.	Check the sensor TA and connection.
	board.		temperature sensor is	continues.	error is detected.	2.	In case of the sensor and its
			short-Circuit or disconnection.				connection is normal, check the
							P.C. board.
			TC sensor ; The heat	Operation	Flashes when	1.	Check the sensor TC and connection.
			exchanger temperature	continues.	error is detected.	2.	In case of the sensor and its
			sensor of the indoor unit				connection is normal, check the
			is out of place, disconnection,				P.C. board.
			short-circuit or migration.
			Fan motor of the indoor unit	All OFF	Flashes when	1.	Check the fan motor and connection.
			is failure, lock-rotor, short-		error is detected.	2.	In case of the motor and its
			circuit, disconnection, etc.				connection is normal, check the
			Or its circuit on P.C. board				P.C. board.
			has problem.
			Other trouble on the indoor	Depend on	Depend on	Replace P.C. board.
			P.C. board.	cause of	cause of
				failure.	failure.

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