Sharp AE-X7FR AYXP7FR, Status of, Indication, Malfunction, Content of diagnosis, Remedy, by LED1

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/	6 times	6	-0	Outdoor unit DC	DC overcurrent error	(1)	IPM continuity check	(1)	Replace the outdoor
outdoor									unit control PWB
units in									assembly.
complete						(2)	Check the IPM and heat	(2)	Correct the installa-
shutdown							sink for secure installation.		tion (tighten the
									screws).
						(3)	Check the outdoor unit fan	(3)	Replace the outdoor
							motor for proper rotation.		unit fan motor.
						(4)	No abnormality found in	(4)	Replace the outdoor
							above inspections (1)		unit control PWB
							through (3).		assembly.
						(5)	No abnormality found in	(5)	Replace the compres-
							above inspections (1)		sor.
							through (4).
			-1		IPM pin level error		Check the IPM is attached		Replace the outdoor
							correctly to the outdoor		unit control PWB
							unit control PWB.		assembly.
Indoor/	7 times	7	-0	Outdoor unit AC	AC overcurrent error	(1)	Check the outdoor unit air	(1)	Ensure unobstructed
outdoor							outlet for blockage.		air flow from the out-
units in									door unit air outlet.
complete						(2)	Check the outdoor unit fan	(2)	Check the outdoor unit
shutdown							for proper rotation.		fan motor.
			-1		AC overcurrent error	(1)	IPM continuity check	(1)	Replace the outdoor
					in OFF status				unit control PWB
									assembly.
			-2		AC maximum cur-	(1)	Check the outdoor unit air	(1)	Ensure unobstructed
					rent error		outlet for blockage.		air flow from the out-
									door unit air outlet.
						(2)	Check the outdoor unit fan	(1)	Check the outdoor unit
							for proper rotation.		fan motor.
			-3		AC current defi-	(1)	Check if there is an open-	(1)	Replace the outdoor
					ciency error		circuit in the secondary		unit control PWB
							winding of the current		assembly.
							transformer of the outdoor
							unit control PWB.
						(2)	Check if the refrigerant	(2)	Charge the specified
							volume is abnormally low.		amount of refrigerant.
						(3)	Check if the refrigerant	(3)	Correct refrigerant
							flows properly.		clogs.
									(2-way valve, 3-way
									valve, pipe, expan-
									sion valve)
Indoor/	9 times	9	-0	Outdoor unit	Thermistor installa-	(1)	Check to make sure out-	(1)	Correct the installa-
outdoor				cooling/heating	tion error or 4-way		door unit thermistor TH2		tion.
units in				switchover	valve error		(heat exchanger) and TH5
complete							(2-way valve) are installed
shutdown							in correct positions.
						(2)	Measure resistance of	(2)	Replace the ther-
							thermistors TH1 and TH5.		mistor assembly.
						(3)	Check the 4-way valve for	(3)	Replace the 4-way
							proper operation.		valve.
						(4)	No abnormality found in	(4)	Replace the outdoor
							above inspections (1)		unit control PWB
							through (3).		assembly.
			-3		Torque control error	(1)	Check if the refrigerant	(1)	Change the specified
							volume is abnormally low.		amount of refrigerant.
						(2)	Check the 4-way valve for	(2)	Replace the 4-way
							proper operation.		valve.
						(3)	check to see compressor	(3)	Replace the compres-
							type is correct.		sor with the correct
									part.

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