Toshiba RAV-SP454AT-E, RAV-SP804ATZG-E 103, Exchange to cooling cycle Exchange to heating cycle

		<In case of SP80>
Check	Outdoor	Check and troubleshooting
code	LED display	(Item without special mention Indicates part of outdoor unit.)
[P19]	<Display 1> <Display 2>	[4-way valve reversal error]

¡¥

¡	¥
				Temperature sensor check
¡	l	Does 4-way valve
			YES	TE sensor CN601
l	l	work correctly?
				TS sensor CN600
¡	¥	(Check pipe temp. etc.		Indoor TC sensor
		in cooling/heating operation.)
				Defect → Correct and repair
¡	¡
		NO
		Is the coil resistance value	NO
		of 4-way valve between		Replace coil of 4-way valve.
		1.3kΩ and 1.6 kΩ ?
		YES
		Check operation of	Error
				Check outdoor P.C. board.
		outdoor P.C. board.
				Defect → replace
		(See below.)
		OK
		Check 4-way valve.
		Defect → Replace

Check method of outdoor P.C. board operation (Self-holding valve type)

1)Set SW804 of Dip switch as the following figure and then push SW801 for approx. 1 second to check exchange operation to cooling cycle/heating cycle.

•Power is turned on for approx. 10 seconds.

•In case of operating with the coil of 4-way valve connected to CN701, take interval over 1 minute before re-operation; otherwise it may cause overheat of the coil.

2)After check, turn off all the Dip switch SW804.

	Exchange to cooling cycle				Exchange to heating cycle
SW804 SW801			CN701	SW804 SW801			CN701
	4		1		4		1
	3				3
ON	2	Push		ON	2	Push
	1		4		1		4
			DC200V or more				DC200V or more

Note) Check by tester

Analog tester : Good if over DC200V

Digital tester : Good if the maximum voltage is over DC200V though the varied voltage may be displayed.

∗In cooling operation, [P19] error may happen when the refrigerant pressure rose abnormally. In this case, remove the cause of pressure rising and then diagnose the error again.

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