Toshiba RAS-10SAV-A, RAS-10SAV-E, RAS-10SKV-A, RAS-10SKV-E manual 65

FILE NO. SVM-7008

Block distinction			Operation of diagnosis function
							Judgment and action
Check	Block	Check	Cause of operation	Air conditioner	Remarks
code		code		status
	Ondoor		Inverter over-current	All off	Displayed when	Even if trying operation again, all
	P.C.		protective circuit operates.		error is detected.	operations stop immediately. :
	board		(Short time)			Replace P.C. board.
			Position-detect circuit error	All off	Displayed when	1.	Even if connecting lead wire of
			or short-circuit between		error is detected.		compressor is removed, position-
			windings of compressor				detect circuit error occurred.
							: Replace P.C. board.
						2. Measure resistance between
							wires of compressor, and perform
							short circuit. : Replace
							compressor.
			Current-detect circuit error	All off	Displayed when	Even if trying operation again, all
					error is detected.	operations stop immediately. :
						Replace P.C. board.
			Being out of place,	All off	Displayed when	1.	Check outdoor temp. sensors
			disconnection or short-		error is detected.		(TE, TS).
			circuit of outdoor temp.			2.	Check P.C. board.
			sensor
			Disconnection or short-	All off	Displayed when	1. Check discharge temp. sensor (TD).
			circuit of discharge temp.		error is detected.	2. Check P.C. board.
			sensor
			Outdoor fan drive system	All off	Displayed when	Position-detect error, over-current
			error		error is detected.	protective operation of outdoor fan
						drive system, fan lock, etc. :
						Replace P.C. board or fan motor.
	Not		Outdoor heat exchanger	Operation	–––	1.	Check outdoor heat exchanger
	displayed		temp. sensor error	continues.			temp. sensor (TE).
						2.	Check P.C. board.
	Ondoor		Compressor drive output	All off	Displayed when	When 20 seconds passed after
	P.C.		error, Compressor error		error is detected.	startup, position-detect circuit error
	board		(lock, missing, etc.),			occurred. : Replace compressor.
			Break down
	Others		Return serial signal has	Operation	Flashes when	1. Repeat Start and Stop with
	(including		been sent when operation	continues.	trouble is		interval of approx. 10 to 40
	compres-		started, but it is not sent		detected on		minutes. (Code is not displayed
	sor)		from halfway.		return serial		during operation.)
			(1) Compressor thermo.		signal, and		Supply gas. (Check also gas leak.)
			operation		normal status	2.	Unit operates normally during
			Gas shortage		when signal is		check.
			Gas leak		reset.		If return serial signal does not
			(2) Instantaneous power				stop between indoor terminal
			failure				block, 2 and 3 replace inverter
							P.C. board.
							If signal stops between indoor
							terminal block, 2 and 3 replace
							indoor P.C. board.
			Compressor does not	All off	Displayed when	1.	Trouble on compressor
			rotate. (Current protective		error is detected.	2.	Trouble on wiring of compressor
			circuit does not operate				(Missed phase)
			when a specified time
			passed after compressor
			had been activated.)
			Discharge temp. exceeded	All off	Displayed when	1. Check discharge temp. sensor (TD).
			117°C		error is detected.	2. Degassing
						3. Trouble on P.M.V.
			Break down of compressor	All off	Displayed when	1. Check power voltage. (220-240 V
					error is detected.		+10%)
						2.	Overload operation of
							refrigeration cycle
							Check installation condition
							(Short-circuit of outdoor diffuser.)
			Four-way valve inverse error	Operation	–––	1. Check 4-way valve operation.
			(TC sensor value lowered	continues.
			during heating operation.)

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