Manuals / Mitsubishi Electronics / Household Appliance / Air Conditioner

Mitsubishi Electronics PUZ-A36NHA2, PUZ-A42NHA2-BS, PUZ-A30NHA2 SW9, 2Function of connector

Models: PUZ-A36NHA2-BS PUY-A12NHA2 PUY-A42NHA2-BS PUY-A30NHA2 PUZ-A36NHA2 PUY-A36NHA2-BS PUZ-A18NHA2 PUZ-A18NHA2-BS PUY-A30NHA2-BS PUZ-A30NHA2-BS PUY-A18NHA2 PUY-A36NHA2 PUZ-A30NHA2 PUY-A12NHA2-BS PUZ-A24NHA2-BS PUZ-A42NHA2 PUY-A18NHA2-BS PUY-A42NHA2 PUZ-A42NHA2-BS PUY-A24NHA2-BS PUZ-A24NHA2 PUY-A24NHA2

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Type of	Switch	No.	Function							Action by the switch operation																																																														Effective timing
Switch	Switch	No.	Function									ON																													OFF																															Effective timing
Switch												ON																													OFF
		1	No function										—																													—																																									—

		2	Power failure			Auto recovery																																No auto recovery																									When power supply ON
	SW5	2	automatic recovery w2			Auto recovery																																No auto recovery																									When power supply ON
			automatic recovery w2


		3,4,5	No function										—																													—																																									—
		6	Model select											Following SW5-6 reference

		1					SW7-1														SW7-2													Power consumption
			Setting of demand				SW7-1														SW7-2													(Demand switch ON)
																																		(Demand switch ON)
							OFF																	OFF									0% (Operation stop)
			control


									ON															OFF													50%																																											Always
			w3						ON															OFF													50%																																											Always
	SW7	2	w3				OFF																	ON													75%
	SW7	2					OFF																	ON													75%
	w4
		3	Max. Hz setting(cooling)		Max. Hz(cooling) o 0.8																																				Normal																																							Always
		4	Max. Hz setting(heating)		Max. Hz(heating) o 0.8																																				Normal																																							Always
Dip		5	No function										—																													—																																									—
Dip		6	Defrost setting		For high humidity																																				Normal																																							Always
switch		6	Defrost setting		For high humidity																																				Normal																																							Always

		1	No function										—																													—																																									—
		1	No function										—																													—																																									—
	SW9	2	Function switch							Valid																															Normal																																							Always

		3,4	No function										—																													—																																									—
		1
		1			MODEL									SW6														SW5-5.6													MODEL							SW6																					SW5-5.6
		2			PUZ-A18N		ON																				ON														PUZ-A30N	ON																				ON
		2			PUZ-A18N		OFF																				OFF														PUZ-A30N	OFF																				OFF
									1		2		3		4			5	6		7		8					1	2		3		4			5	6							1		2		3		4		5	6				7	8								1			2			3		4	5		6
		3							1		2		3		4			5	6		7		8					1	2		3		4			5	6							1		2		3		4		5	6				7	8								1			2			3		4	5		6
					PUY-A12N		ON																				ON														PUZ-A36N	ON																				ON
							ON																				ON															ON																				ON
							OFF																				OFF															OFF																				OFF
		4							1		2		3		4			5	6		7		8					1	2		3		4			5	6							1		2		3		4		5	6				7	8								1			2			3		4	5		6
	SW6	4	Model select		PUY-A18N		ON																				ON														PUY-A30N	ON																				ON
		5					OFF			1		2		3	4			5		6	7			8			OFF	1		2	3		4			5		6				OFF																				OFF
							OFF																				OFF															OFF		1		2		3		4		5			6		7		8			OFF				1			2			3		4	5		6
																																												1		2		3		4		5			6		7		8							1			2			3		4	5		6

					PUZ-A24N		ON																				ON														PUY-A36N	ON																				ON
		6			PUZ-A24N		OFF																				OFF														PUY-A36N	OFF																				OFF
		6								1	2		3		4			5	6		7		8					1	2		3		4			5	6							1		2		3		4		5	6				7	8								1			2			3		4	5		6
							ON																				ON															ON																				ON
		7			PUY-A24N		OFF			1		2	3			4		5		6	7			8			OFF	1		2	3			4		5		6			PUZ-A42N	OFF																				OFF
					PUY-A24N		OFF																				OFF														PUZ-A42N	OFF	1			2		3		4		5	6				7	8				OFF		1					2			3		4	5		6
																																											1			2		3		4		5	6				7	8						1					2			3		4	5		6

		8
																																									PUY-A42N	ON																				ON
																																										OFF																				OFF
																																										OFF	1			2		3		4		5	6				7	8				OFF		1					2			3		4	5		6
																																											1			2		3		4		5	6				7	8						1					2			3		4	5		6
	SW5	6
	SW5	6

w2 Power failure automatic recovery can be set by either remote controller or this DIP SW. If one of them is set to ON, Auto recovery activates. Please set Auto recovery basically by remote controller because all units do not have DIP SW. Please refer to the indoor unit installation manual.

w3 SW7-1,2 are used for demand control. SW7-1,2 are effective only at the demand control. (Refer to next page : Special function (b))

w4 Please do not use SW7-3~6 usually. Trouble might be caused by the usage condition.

(2)Function of connector

	Types	Connector	Function	Action by open/ short operation		Effective timing

				Short	Open
				Short	Open

	Connector	CN31	Emergency operation	Start	Normal	When power supply ON

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Mitsubishi Electronics PUZ-A36NHA2, PUZ-A42NHA2-BS, PUZ-A30NHA2, PUY-A36NHA2, PUZ-A18NHA2-BS SW9, 2Function of connector

PUZ-A36NHA2-BS, PUY-A12NHA2, PUY-A42NHA2-BS, PUY-A30NHA2, PUZ-A36NHA2 specifications

Mitsubishi Electronics has long been a leader in the HVAC industry, and their range of air conditioning units, including the PUY-A24NHA2, PUZ-A24NHA2, PUY-A24NHA2-BS, PUZ-A42NHA2-BS, and PUY-A42NHA2, exemplifies their commitment to innovation and energy efficiency. These models are designed to provide optimal climate control for both residential and commercial applications, ensuring comfort throughout the year.

One of the defining features of these models is their advanced inverter technology, which allows for precise temperature control and reduced energy consumption. The inverter technology adjusts the compressor speed according to the cooling load, significantly lowering operating costs compared to traditional fixed-speed systems. This means that users can enjoy consistent comfort without worrying about surging energy bills.

The PUY and PUZ units come equipped with powerful indoor and outdoor components that enable efficient heat exchange. These systems provide excellent performance even in extreme weather conditions, with reliable operation at low ambient temperatures. This capability ensures that you can maintain a comfortable environment, no matter the season.

Additionally, the models are designed with quiet operation in mind. The outdoor units incorporate noise-reduction technology, ensuring that the systems operate at minimal sound levels. This is especially beneficial for residential areas or office environments, where maintaining a peaceful atmosphere is crucial.

Mitsubishi Electronics has also integrated smart technology into these units. With options for remote control via Wi-Fi, users can manage their air conditioning settings from anywhere, using their smartphones or tablets. This integration enhances user convenience and allows for more efficient scheduling and energy management.

These models are also known for their environmentally friendly refrigerants, such as R410A, which contribute to lower global warming potential and align with modern sustainability practices. By choosing Mitsubishi's PUY and PUZ series, consumers not only prioritize their comfort but also contribute to environmental conservation.

In summary, the Mitsubishi Electronics PUY-A24NHA2, PUZ-A24NHA2, PUY-A24NHA2-BS, PUZ-A42NHA2-BS, and PUY-A42NHA2 air conditioning units are equipped with cutting-edge technology, offering energy efficiency, quiet operation, and smart functionality. Whether for residential or commercial use, these units are designed to meet the demands of modern climate control while prioritizing energy savings and sustainability.

Contents

Contents Parts Catalog OCB429 Reference Manual Indoor Unit Safety Precaution Always Observe for Safety When charging directly from cylinder Additional refrigerant charge R22 Features PUZ-A18NHA2 PUZ-A18NHA2-BS PUY-A12/18NHA2 PUY-A12/18NHA2-BSPUZ-A42NHA2 PUZ-A42NHA2-BS PUY-A42NHA2 PUY-A42NHA2-BS Specifications PUZ-A18NHA2 PUZ-A24NHA2 PUZ-A30NHA2 PUZ-A36NHA2 PUZ-A42NHA2 PUY-A18NHA2-BS PUY-A24NHA2-BS Compressor Technical Data Data Noise Criterion Curves PUZ-A18NHA2-BS Standard Operation Data Heat pump Cooling only PKA-A12GA PKA-A18GA PKA-A24FA PKA-A30FA PKA-A36FA PLA-A42BA Outdoor Unit Unit mminch Example of Notes Service Space 662-5/8 Air outlet Wiring Diagram NET Adapter PUZ-A24NHA2 PUZ-A24NHA2-BS PUY-A24NHA2 PUY-A24NHA2-BS NET Adapter WUse copper supply wires TABU/V/W Wiring Specifications System Simultaneous twin system Separate Indoor UNIT/OUTDOOR Unit Power Supplies OFF Indoor Outdoor Connecting Cable NET Wiring Method Refrigerant address NET address Control Remote Controller NET address setting Refrigerant address settingRegulations in address settings NET wiring Refrigerant System Diagram PUZ-A18NHA2 PUZ-A18NHA2-BSPUZ-A42NHA2 PUZ-A42NHA2-BS Way valve solenoid coil Heating on Cooling OFF PUY-A12/18NHA2 PUY-A12/18NHA2-BS PUY-A42NHA2 PUY-A42NHA2-BS Refrigerant recovering pump down Start and finish of test run Troubleshooting TroubleshootingCheck Point Under Test RUN Before test run Operating procedures Symptoms in test run mode Cause Remote Controller DisplayContents of inferior phenomena Test run for wireless remote controller HOW to Proceed SELF-DIAGNOSIS When a Problem Occurs During OperationSelf-Diagnosis During Maintenance or Service Remote Controller Diagnosis ON/OFF Malfunction-diagnosis method by wireless remote controller Malfunction-diagnosis method at maintenance serviceProcedure Case of trouble during operation U9,UH Error Code Abnormal point and detection method Case 63L connector openSELF-DIAGNOSIS Action Table Cndc Error Code Case Judgment and action 63H connector openConnector open Indoor/outdoor unit connector Case Judgment and action High pressure High-pressure switch High discharging temperatureAbnormalities detected while unit is operating 63H worked Temperature thermistor TH4 Temperature of heatsinkPower module Case Judgment and action Open/short circuit of discharge Synchronous signal to main circuit When compressor lockedCurrent sensor error Case Judgment and action Outdoor fan motor Remote controller transmission ErrorE0/signal receiving errorE4Remote controller control board Case Judgment and action Low pressure 63L worked Case Judgment and action Remote controller transmission ErrorE3/signal receiving errorE5Error Signal receiving error Non defined error code NET communication error Case Judgment and action Pipe temperatureHardware error of transmission Case Judgment and action Address duplicate definition To the next From the previous Fresh MasterMaster Lossnay Troubleshooting by Inferior Phenomena VCTF, VCTFK, CVV CVS, VVR, VVF, VCTPhenomena Factor Countermeasure Melans Please Wait YES Outdoor power circuit board Power supply To the outdoor unit Check the breakerOutdoor connecting wire Miswiring, breaking Indoor/outdoor connecting wire Blinking Defective indoor Replace the indoor Power boardNot lighting Breaking or poor Fix the breaking or poor Check if there is breaking Before repair Frequent calling from customers Action Table Phone Calls From Customers How to Respond Sometimes This is the sound which is heard when the flowRefrigerant in the air conditioner is switched This is not a malfunction With Blower… With Airflow Direction…There might be a case that Page HOW to Check the Parts Wiring contact check Power supply check Remove the connector CNF1Fuse check END HOW to Check the Components Thermistor feature chart Low temperature thermistorsMedium temperature thermistor High temperature thermistor Output pulse signal and the valve operation Operation summary of the linear expansion valveLinear expansion valve operation Linear expansion valve A24, 30, 36 How to detach the coil How to attach the coil Be sure to attach the stopper Emergency operation procedure Emergency OperationReleasing emergency operation SW4 Operation data during emergency operation Test Point Diagram LI, NI CNAC1, CNAC2CN5 LO, no PUZ-A24NHA2 PUZ-A24NHA2-BS PUY-A24NHA2 PUY-A24NHA2-BS RS1 LD1-LD2 DIP-PFCDIP-IPM CN3 CN4 CN5 Cnaf CN3TABP2/SC-P2 Actm Upper side Lower sideL1, L2 Function of SWITCHES, Connectors and Jumpers Function of switchesFunction Action by the switch operation Effective timing OFF 2Function of connector SW9 Special function 50%75% Display function of inspection for outdoor unit Blinking Abnormality of outdoor fan Motor rotational speed 1Check the outdoor fan motor 1Check if stop valves are open Operation indicator Digital indicator LED1 working details Example When 42500 times 425 100 times Secs 5secs ~9999 When it is 100 hours or more, hundreds digit, tensExample When 2450 hours 245 10 hours Lighting Cancellation of postponement SW2 setting Display detail Explanation for display Unit Outdoor unit setting information Single phase 2 3 phaseUnit Cooling only DegF Fan step on error occurring ~10 Step Example When 130 pulse Discharge superheat on error occurring ~327 0~182degC SHd Secs Sub cool on error occurring. SC ~234 0~130degCExample When 415 minutes Minute Secs U9 Error status during the Error Rise of discharge temperature LED Easy Maintenance Function Maintenance Mode Operation MethodSwitching to maintenance mode Fixed Hz operation Data measurement To check the data for each item, repeat steps 5 to Guide for Operation Condition Function Setting Unit Function Setting by the Remote ControllerData of the sensor Ta=C On main remote Controller Average data Initial Ta=A+B/2 Sensor on all Mode No.11 Setting No SettingsPLA-BA PCA-GA Selecting functions using the wired remote controller For modes 15 and higherSpecified indoor unit Press E FAN operation Operating Procedure Flow of function selection procedure Operating instructions Function Selection of Remote Controller Mode Selection Function selection flowchart Mode Vane FAN Button for 3 seconds to switch to Maintenance monitor Check button for 3 seconds to return to maintenance modeTurn on the Monitoring the operation data Press Request Code List Outdoor unit-Control state Code Description 100 For indoor fan pulsation control Detail Contents in Request Code 101 Error content U9 Request code 102Fan control state Request code Actuator output state Request code Outdoor unit --Capacity setting display Request code Outdoor unit Setting information Request code103 Contact demand capacity Request code 104 Indoor unit Model setting information Request code Indoor unit Capacity setting information Request code105 Data display See the table on the right Disassembly Procedure PUZ-A18NHA2 PUZ-A18NHA2-BS Operating Procedure Photos106 Photo Removing the thermistor Outdoor 2-phase pipe TH6 107Removing the electrical parts box Thermistor Outdoor pipe TH3 Operating Procedure Photos 108 109 Removing the 4-way valveRemoving linear expansion valve Separator Recover refrigerant 110Removing the compressor MC Removing the accumulator Operating Procedure Photos & Illustration Removing the service panel and top panel111 Removing the fan motor MF1 112 Removing the thermistor Outdoor pipe TH3Thermistor Discharge TH4 113 Removing the 4-way valve coilRemoving the linear expansion valve coil Removing the bypass valve coil 114 Removing the bypass valveRemoving the reactor ACLA24 115 Removing the reactor DCL A30Remove 2 receiver leg fixing screws 4 116 Removing the fan motor MF1, MF2 Remove the service panel. See figure Outdoor pipe 117Remove the top panel. See figure Controller 118 Are not oxidizedLinear expansion Coil Valve coil Low pressure switch 63L 119Removing the reactor DCL and capacitor CE DCL Remove 2 back cover panel fixing screws 5 10