Logitech MSZ-A09NA service manual Trouble Criterion Of Main Parts, MSY-A15NA MSY-A17NA MSY-A24NA

OPERATION INDICATOR

No.	Abnormal		Operation indicator lamp	Symptom	Condition	Correspondence
	point
		Left lamp lights and lower lamp flashes.
	MXZ type	Lower lamp flashes.		Outdoor unit	The operation mode of the each indoor unit
					is differently set to COOL (includes DRY) and	• Unify the operation mode.
	Operation			operates but
1					HEAT at the same time, the operation mode	Refer to outdoor unit service
	mode	2.5-second OFF		indoor unit does	of the indoor unit that has operated at first has	manual.
	setting			not operate.	the priority.

8-5. TROUBLE CRITERION OF MAIN PARTS

MSZ-A09NA MSZ-A12NA MSZ-A15NA MSZ-A17NA MSZ-A24NA

MSY-A15NA MSY-A17NA MSY-A24NA

Part name	Check method and criterion		Figure
Room temperature	Measure the resistance with a tester.
thermistor(RT11)
Indoor coil thermistor	Refer to 8-7. "Test point diagram and voltage",
	"Indoor electronic control P.C. board", the chart of thermistor..
(RT12(MAIN),RT13(SUB))
Indoor fan motor(MF)	Check 8-6. .
	Measure the resistance between the terminals with a tester.		RED
Horizontal vane	(Part temperature 50 ~ 86°F)
			ROTOR
motor(MV)	Color of the lead wire	Normal	YLW
MSZ-A09/12/15/17NA	BRN-other one	235 ~ 255 Ω	BRN
MSY-A15/17NA			ORN	GRN
Horizontal vane	Measure the resistance between the terminals with a tester.		RED
	(Part temperature 50 ~ 86°F)
motor(MV1)			ROTOR
Vertical vane	Color of the lead wire	Normal	YLW
motor(MV2)	BRN-other one	282 ~ 306 Ω	BRN
MSZ-A24NA			ORN	GRN
MSY-A24NA

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