Mitsubishi Electronics PCA-A24GA service manual Vane motor MV

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10-5. HOW TO CHECK THE PARTS

PCA-A24GA PCA-A30GA PCA-A36GA PCA-A42GA

PCA-A24GA1PCA-A30GA1PCA-A36GA1PCA-A42GA1

	Parts name						Check points

Room temperature					Disconnect the connector then measure the resistance using a tester.
thermistor		(TH1)			(At the ambient temperature 10:(50˚F)~30:(86˚F))
Pipe temperature
thermistor		(TH2)			Normal	Abnormal		(Refer to the next pege for a detail.)
					Normal	Abnormal
Condenser/evaporator
					4.3k"~9.6k"	Open or short
					4.3k"~9.6k"	Open or short
temperature thermistor
temperature thermistor
		(TH5)

Fan motor (MF)					Measure the resistance between the terminals using a tester.
	Relay connector				(Winding temperature 20:(68˚F))
	1				(Winding temperature 20:(68˚F))

		Red	1		Motor terminal	Normal
		Red	1			Normal
	2	White
	2	White	2		or	PCA-A24GA(1)	PCA-A36GA(1)			Abnormal
			2		or	PCA-A24GA(1)	PCA-A36GA(1)			Abnormal
	3	Black	3		Relay connector	PCA-A30GA(1)	PCA-A42GA(1)
		Black
	Protector				Red–Black	60.8"	41.1"			Open or short
					Red–Black	60.8"	41.1"
					White–Black	55.1"	54.3"
	OFF : 130i 5:				White–Black	55.1"	54.3"
	ON	: 80i 20:
Vane motor (MV)
Vane motor (MV)					Connector	Normal	Abnormal
						Normal
4 Orange
						PCA-A24·30GA(1)
						PCA-A24·30GA(1)
5	Red	M			Brown–Yellow
					Brown–Yellow
2	Pink
2	Pink				Brown–Blue	140~160"	Open or short

	Yellow Brown Blue				Red–Orange
					Red–Orange

					Red–Pink
	3 6 1				Red–Pink


4	Pink				Connector	Normal	Abnormal

		M				PCA-A36·42GA(1)
		M				PCA-A36·42GA(1)
2 Orange					Red–Yellow
5	Red				Red–Blue	140~160"	Open or short
	Red
	Yellow		Blue		Red–Blue
	Yellow		Blue		Red–Blue

31

Red–Pink

22

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Contents PCA-A24GA ContentsRevised EDITION-B PCA-A30GATechnical Changes Technical Data BookReference Manual Safety Precaution Always Observe for SafetyWhen charging directly from cylinder Additional refrigerant chargePart Names and Functions Indoor UnitDisplay Section Temperature setting display Operation Mode displayMode Select button Timer displayPCA-A30GA, PCA-A30GA1Single phase, 60Hz, 208/230V SpecificationsService Ref PCA-A36GA, PCA-A36GA1Single phase, 60Hz, 208/230VPCA-A30GA1 Noise Criterion CurvesPCA-A24GA1 PCA-A36GA1Outlines and Dimensions PCA-A24GA PCA-A24GA1 PCA-A30GA PCA-A30GA1PCA-A36GA PCA-A42GA PCA-A36GA1 PCA-A42GA1 Unit inchmmWiring Diagram Indoor unit Installation ManualRefrigerant System Diagram Heat exchangerTroubleshooting TroubleshootingSELF-DIAGNOSIS Action Table Cause Countermeasure Freezing/overheating protection is Pipe temperatureWorking ErrorE0/signal receiving errorE4 Cause Countermeasure Pipe temperature thermistorRemote controller transmission ErrorE3/signal receiving errorE5Remote controller control board Error Signal receiving errorError Transmitting error Indoor controller board Is off Troubleshooting by Inferior Phenomena Phenomena Cause Countermeasure Ply system3Upward/downward vane 4Receiver for wireless remoteIs blinking Performance failurePage Vane motor MV Between 1 to 3 12.6-13.7V DC Pin1 + Test Point DiagramConnect to the indoor controller board CN2D PCA-A36GA PCA-A36GA1 Functions of DIP Switch and Jumper Wire ModelsRemoving the air intake grille Disassembly ProcedureOperating Procedure Photos & Illustrations Removing the electrical boxRemoving the sirocco fan Operating ProcedureRemoving the fan motor MF Remove the air intake grilleRemoving the Indoor coil thermistor TH2/TH5 Operating Procedure PhotosRemoving the vane motor MV Removing the Under panelRemove the intake grille. See the figure Removing the drain panRemoving the guide vane Removing the Auto vaneRemoving the heat exchanger R01 29J 130 Parts No Parts Name SpecificationsDrawing No R01 35J 130Structural Part PCA-A24GA PCA-A30GA PCA-A36GA PCA-A42GA Electrical Parts PCA-A24GA PCA-A30GA PCA-A36GA PCA-A42GA Remarks Parts Name SpecificationsRoHS Parts NoStructural Part PCA-A24GA1PCA-A30GA1PCA-A36GA1PCA-A42GA1 Electrical Parts PCA-A24GA1PCA-A30GA1PCA-A36GA1PCA-A42GA1 Wiring RecomRoHS Qty/ set