Mitsubishi Electronics MSZ-FD09NA service manual Area R Power

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

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Contents MSZ-FD09NA MSZ-FD12NA Specification has been corrected New model Part Names and Functions AccessoriesIndoor model Power supply Phase, Hz 208/230Weight External ﬁnish Remote controllerOutlet AIR Speed and Coverage Range Operating RangeAir out Outlines and DimensionsUnit inch AirWiring Diagram Refrigerant System Diagram UnitinchRefrigerant flow in cooling Refrigerant flow in heating P.C. Board Modification for Individual Operation Service FunctionsTimer Short Mode How to modify the remote controller P.C. boardHow to release Auto Restart Function Auto Restart FunctionOperation Lamp blinks in abnormal condition Microprocessor ControlRefer to Lamp lights during operationCool Operation DRY OperationHeat Operation Outdoor Unit MXZ series Auto Change Over ··· Auto Mode OperationMode selection Auto Vane OperationFeet, set the horizontal DirectionVertical vane Enlarged view of i-see Sensor Area SettingSee Control Operation See SensorDaytime Nighttime Cold areaLighted Not lighted Center ····· Operation and operating rangeProgram Timer Minute Time Delay Operation Changing temperature indication F/CEMERGENCY/TEST Operation How to replace batteries TroubleshootingBefore troubleshooting, check the following Lead wiring Housing point Troubleshooting procedureOFF Failure Mode Recall Function Power Indoor unit failure mode tableInstruction of Troubleshooting Lighted Blinking Troubleshooting Check TableArea R Power Trouble Criterion of Main Parts MSZ-FD09NAMSZ-FD12NA Check of indoor fan motor Troubleshooting FlowPage Replace the horizontal vane motor, How to check miswiring and serial signal error Electromagnetic noise enters into TV sets or radios Test Point Diagram and Voltage Indoor electronic control P.C. boardSW P.C. Board Power monitor receiver P.C. board Monitor P.C. board Removing the panel Photo Disassembly InstructionsOpen the rear cover of the power monitor receiver P.C Operating Procedure PhotosCorrect position Removing the nozzle assemblyRemoving the electrical box Photo Photo Removing the vertical vane motor unitRemoving the indoor fan motor and the line flow fan Photo Removing the horizontal vane motor PhotoMade in Japan