Vermont Casting MSZ-D36NA, MSZ-D30NA, MSY-D36NA, MSY-D30NA Trouble Criterion of Main Parts

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9-5. TROUBLE CRITERION OF MAIN PARTS

MSZ-D30NA

MSZ-D36NA

MSY-D30NA

MSY-D36NA

Part name			Check method and criterion		Figure
Room temperature		Measure the resistance with a tester.
thermistor(RT11)		Refer to 9-7. "Test point diagram and voltage", "Indoor electronic control P.C.
Indoor coil thermistor
Indoor coil thermistor		board", the chart of thermistor.
(RT12(MAIN), RT13(SUB))
Indoor fan motor(MF)		Check 9-6. .

		Measure the resistance between the terminals with a tester.
		(Part temperature 50 ~ 86 °F)
Horizontal vane motor		Horizontal vane motor (MV1)			RED
					ROTOR
		Color of the lead wire	Normal		ROTOR
(MV1)		Color of the lead wire	Normal		YLW
(MV1)		BRN - other one	240 ~ 260 Ω		YLW
Vertical vane motor		BRN - other one	240 ~ 260 Ω		BRN
(MV2)		Vertical vane motor (MV2)			ORN GRN
		Vertical vane motor (MV2)

		Color of the lead wire	Normal
		BRN - other one	282 ~ 306 Ω

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Contents MSZ-D30NA MSZ-D36NA MSY-D30NA MSY-D36NA Page Technical Changes Accessories Part Names and FunctionsSpecification Operating Range Outlet AIR Speed and Coverage RangeOutlines and Dimensions MSZ-D36NA MSY-D30NA MSY-D36NAWiring Diagram Refrigerant System Diagram UnitinchService Functions Timer Short ModeHow to modify the remote controller P.C. board P.C. Board Modification for Individual OperationAuto Restart Function OperationOperation Indicator lamp Microprocessor ControlCool Operation Heat Operation MSZFAN Operation MSY Feel Control Operation MSYAuto Change Over ··· Auto Mode Operation MSZ Mode selectionFuzzy control Auto Vane Operation Vertical vane 3 4 Swing 5Program Timer Minute Time Delay Operation Changing Temperature Indication F /CEMERGENCY/TEST Operation Troubleshooting Before troubleshooting, check the followingTroubleshooting procedure How to replace batteriesFailure Mode Recall Function OFFIndoor unit failure mode table Eration IndicaInstruction of Troubleshooting StartTroubleshooting Check Table Lighted Blinking Not lightedTrouble Criterion of Main Parts Troubleshooting Flow Check of indoor fan motorCheck of remote controller and receiver P.C. board Indoor electronic control P.C. board How to check miswiring and serial signal error Electromagnetic noise enters into TV sets or radios Test Point Diagram and Voltage Power monitor receiver P.C. boardSW P.C. board Disassembly Instructions Board, the power monitor receiver P.C. board and the SWRemoving the panel Removing the electrical box, the electronic control P.CRemoving the nozzle assembly Removing the vertical vane motorRemoving the horizontal vane motor Removing the line flow fan and the indoor fan motor Page Page New publication, effective Feb Distributed in Feb . No. OBH501Made in Japan