Sharp AY-XP9FR, AY-XP12FR, AY-XP7FR, AE-X7FR, AE-X9FR, AE-X12FR service manual Status

								AYXP7FR
Status of	Indication	Malfunction		Content of diagnosis		Inspection location/method		Remedy
indoor/	by LED1	No. dis-
outdoor	on out-	played on
units	door unit	main unit
	*2	display sec-
		tion *1
		Main	Sub-	Main category	Sub-category
		cate-	cate-
		gory	gory
Indoor/	2 times	2	-0	Cycle tempera-	Compressor high-	(1) Check the outdoor unit air	(1)	Ensure unobstructed
outdoor				ture	temperature error	outlet for blockage.		air flow from the out-
units in								door unit air outlet.
complete						(2) Check if the power supply	(2)	Connect power sup-
shutdown						voltage is 90 V or higher at		ply of proper voltage.
						full power.
						(3) Check the pipe connec-	(3)	Charge the specified
						tions for refrigerant leaks.		amount of refrigerant.
						(4) Measure resistance of the	(4)	Replace the outdoor
						outdoor unit compressor		unit compressor ther-
						thermistor.		mistor assembly.
						(TH1: Approx. 53 kΩ at
						25°C)
						(5) Check the expansion	(5)	Replace the expan-
						valve for proper operation.		sion valve coil, expan-
								sion valve or outdoor
								unit control PWB
								assembly.
Indoor			-1		Temporary stop due	(Temporary stop for cycle pro-		–
unit in					to compressor dis-	tection)
operation					charge overheat *3
Outdoor			-2		Temporary stop due	(Temporary stop for cycle pro-		–
unit in					to outdoor unit heat	tection)
tempo-					exchanger overheat
rary stop					*3
			-3		Temporary stop due	(Temporary stop for cycle pro-		–
					to outdoor unit heat	tection)
					exchanger overheat
					*3
			-4		Temporary stop due	(Temporary stop for cycle pro-		–
					to 2-way valve	tection)
					freeze *3
Indoor	3 times	3	-0	Dry operation	Temporary stop due	(Temporary stop for cycle pro-		–
unit in					to dehumidifying	tection)
operation					operation *3
Outdoor
unit in
tempo-
rary stop
Indoor/	5 times	5	-0	Outdoor unit	Heat exchanger	(1) Check connector CN8 of	(1)	Correct the installa-
outdoor				thermistor	thermistor open-cir-	the outdoor unit ther-		tion.
units in				open-circuit	cuit error	mistor for secure installa-
complete						tion.
shutdown			-1		Outside tempera-	(2) Measure resistance of out-	(2)	Replace the outdoor
					ture thermistor	door thermistors TH1 to		unit thermistor assem-
					open-circuit error	TH5.		bly.
			-2		Suction thermistor	(3) Check the lead wires of	(3)	Replace the outdoor
					open-circuit error	thermistors TH1 through		unit thermistor assem-
						TH5 on the outdoor unit		bly.
						control PWB for open-cir-
						cuit.
			-3		2-way valve ther-	(4) No abnormality found in	(5)	Replace the outdoor
					mistor open-circuit	above inspections (1)		unit control PWB
					error	through (3).		assembly.
			-4		Discharge ther-
					mistor open-circuit
					error

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