Mitsubishi Electronics PUY-A30NHA2-BS, PUZ-A42NHA2-BS PUY-A12/18NHA2 PUY-A12/18NHA2-BS

Page 26

PUY-A12/18NHA2 PUY-A12/18NHA2-BS

 

Unit : mm(inch)

Stop valve

High pressure

Service port

 

(Check)

 

(with service port)

 

protect switch

Outdoor heat exchanger

 

(#50)

 

 

 

 

Thermistor

Refrigerant GAS pipe

Strainer

 

 

 

 

 

 

(TH6)

 

 

 

 

12.7A({1/2)

 

 

 

 

Thermistor

 

 

 

 

 

 

 

 

 

 

(TH3)

 

Accumulator

 

Thermistor (TH4)

Distributor

 

 

 

 

 

 

 

Compressor

(#100)

(#100)

 

Refrigerant LIQUID pipe

 

 

Strainer

Strainer

 

6.35A({1/4)

Stop valve

 

Linear expansion valve

 

 

 

 

 

 

 

Refrigerant flow in cooling

 

PUY-A24/30/36NHA2 PUY-A24/30/36NHA2-BS

 

 

Ball valve

Bypass valve

Service

Outdoor heat exchanger

 

port

 

 

 

(#50)

 

 

 

(check)

 

Thermistor

Refrigerant GAS pipe

Strainer

 

 

 

 

 

 

(TH6)

 

 

 

 

15.88A({5/8)

 

 

High pressure

Thermistor

 

 

 

 

Service

 

protect switch

(TH3)

 

port

 

Thermistor

 

 

 

(check)

 

 

 

 

 

 

(TH4)

 

Distributor

 

 

 

 

 

 

Accumulator

 

 

 

 

 

 

Compressor (#100)

(#100)

 

Refrigerant LIQUID pipe

 

 

Strainer

Strainer

 

9.52A({3/8)

Stop valve

 

Linear expansion valve

 

 

 

 

(with service port)

Refrigerant flow in cooling

PUY-A42NHA2 PUY-A42NHA2-BS

Ball valve

Low pressure protect

 

switch

Service

Outdoor heat exchanger

 

 

(#50)

 

port

Strainer

Thermistor

(check)

Strainer

(#100)

 

(TH6)

Refrigerant GAS pipe

 

 

15.88A({5/8)

 

High pressure

Thermistor

Service

 

 

protect switch

(TH3)

port

 

 

 

(check)

 

Thermistor

 

Accumulator

 

Distributor

 

(TH4)

 

 

 

Compressor

 

Refrigerant LIQUID pipe

 

 

 

9.52A({3/8)

Strainer

Strainer

 

 

(#100)

(#100)

 

Stop valve

 

 

(with service port)

Linear expansion valve

 

 

Refrigerant flow in cooling

26

Page 25 Page 27
Image 26
Page 25 Page 27
Contents Contents Parts Catalog OCB429Reference Manual Indoor UnitSafety Precaution Always Observe for SafetyWhen charging directly from cylinder Additional refrigerant chargeR22 PUZ-A42NHA2 PUZ-A42NHA2-BS PUY-A42NHA2 PUY-A42NHA2-BS FeaturesPUZ-A18NHA2 PUZ-A18NHA2-BS PUY-A12/18NHA2 PUY-A12/18NHA2-BS Specifications PUZ-A18NHA2 PUZ-A24NHA2 PUZ-A30NHA2 PUZ-A36NHA2 PUZ-A42NHA2PUY-A18NHA2-BS PUY-A24NHA2-BS Compressor Technical Data DataNoise Criterion Curves PUZ-A18NHA2-BSStandard Operation Data Heat pumpCooling only PKA-A12GA PKA-A18GA PKA-A24FA PKA-A30FA PKA-A36FA PLA-A42BAOutdoor Unit Unit mminchExample of Notes Service Space 662-5/8 Air outletWiring Diagram NET AdapterPUZ-A24NHA2 PUZ-A24NHA2-BS PUY-A24NHA2 PUY-A24NHA2-BS NET AdapterWUse copper supply wires TABU/V/W Wiring Specifications System Simultaneous twin systemSeparate Indoor UNIT/OUTDOOR Unit Power Supplies OFFIndoor Outdoor Connecting Cable NET Wiring Method Refrigerant address NET address Control Remote ControllerRegulations in address settings NET address settingRefrigerant address setting NET wiringPUZ-A42NHA2 PUZ-A42NHA2-BS Refrigerant System DiagramPUZ-A18NHA2 PUZ-A18NHA2-BS Way valve solenoid coil Heating on Cooling OFFPUY-A12/18NHA2 PUY-A12/18NHA2-BS PUY-A42NHA2 PUY-A42NHA2-BSRefrigerant recovering pump down Start and finish of test runCheck Point Under Test RUN TroubleshootingTroubleshooting Before test runContents of inferior phenomena Operating proceduresSymptoms in test run mode Cause Remote Controller Display Test run for wireless remote controller Self-Diagnosis During Maintenance or Service HOW to Proceed SELF-DIAGNOSISWhen a Problem Occurs During Operation Remote Controller Diagnosis ON/OFFProcedure Malfunction-diagnosis method by wireless remote controllerMalfunction-diagnosis method at maintenance service Case of trouble during operationU9,UH SELF-DIAGNOSIS Action Table Error Code Abnormal point and detection method Case63L connector open CndcConnector open Error CodeCase Judgment and action 63H connector open Indoor/outdoor unit connectorAbnormalities detected while unit is operating Case Judgment and action High pressure High-pressure switchHigh discharging temperature 63H workedPower module Temperature thermistor TH4Temperature of heatsink Case Judgment and action Open/short circuit of dischargeCurrent sensor error Synchronous signal to main circuitWhen compressor locked Case Judgment and action Outdoor fan motorRemote controller control board Remote controller transmissionErrorE0/signal receiving errorE4 Case Judgment and action Low pressure 63L workedError Signal receiving error Case Judgment and action Remote controller transmissionErrorE3/signal receiving errorE5 Non defined error codeHardware error of transmission NET communication errorCase Judgment and action Pipe temperature Case Judgment and action Address duplicate definitionTo the next Master From the previousFresh Master LossnayPhenomena Factor Countermeasure Troubleshooting by Inferior PhenomenaVCTF, VCTFK, CVV CVS, VVR, VVF, VCT Melans Please Wait YESOutdoor connecting wire Outdoor power circuit boardPower supply To the outdoor unit Check the breaker Miswiring, breakingNot lighting Indoor/outdoor connecting wire BlinkingDefective indoor Replace the indoor Power board Breaking or poor Fix the breaking or poorCheck if there is breaking Before repair Frequent calling from customers Action TableRefrigerant in the air conditioner is switched Phone Calls From Customers How to RespondSometimes This is the sound which is heard when the flow This is not a malfunctionThere might be a case that With Blower…With Airflow Direction… Page HOW to Check the Parts Fuse check Wiring contact checkPower supply check Remove the connector CNF1 ENDMedium temperature thermistor HOW to Check the ComponentsThermistor feature chart Low temperature thermistors High temperature thermistorLinear expansion valve operation Output pulse signal and the valve operationOperation summary of the linear expansion valve Linear expansion valve A24, 30, 36 How to detach the coil How to attach the coilBe sure to attach the stopper Releasing emergency operation Emergency operation procedureEmergency Operation SW4Operation data during emergency operation Test Point Diagram CN5 LI, NICNAC1, CNAC2 LO, noPUZ-A24NHA2 PUZ-A24NHA2-BS PUY-A24NHA2 PUY-A24NHA2-BS RS1 DIP-IPM LD1-LD2DIP-PFC CN3 CN4 CN5TABP2/SC-P2 CnafCN3 ActmL1, L2 Upper sideLower side Function Action by the switch operation Effective timing Function of SWITCHES, Connectors and JumpersFunction of switches OFF2Function of connector SW975% Special function50% 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 openOperation indicator Digital indicator LED1 working detailsExample When 2450 hours 245 10 hours Example When 42500 times 425 100 times Secs 5secs~9999 When it is 100 hours or more, hundreds digit, tens Lighting Cancellation of postponementSW2 setting Display detail Explanation for display Unit Unit Outdoor unit setting informationSingle phase 2 3 phase Cooling onlyDegF Fan step on error occurring ~10 Step Example When 130 pulse Example When 415 minutes Minute Secs Discharge superheat on error occurring ~327 0~182degC SHdSecs Sub cool on error occurring. SC ~234 0~130degC U9 Error status during the ErrorRise of discharge temperature LEDSwitching to maintenance mode Easy Maintenance FunctionMaintenance Mode Operation Method Fixed Hz operationData measurement To check the data for each item, repeat steps 5 toGuide for Operation Condition Data of the sensor Ta=C On main remote Controller Function SettingUnit Function Setting by the Remote Controller Average data Initial Ta=A+B/2 Sensor on allPLA-BA PCA-GA Mode No.11Setting No Settings Specified indoor unit Selecting functions using the wired remote controllerFor modes 15 and higher Press E FAN operationOperating Procedure Flow of function selection procedure Operating instructionsFunction Selection of Remote Controller Mode SelectionFunction selection flowchart Mode Vane FANTurn on the Monitoring the operation data Button for 3 seconds to switch to Maintenance monitorCheck button for 3 seconds to return to maintenance mode PressRequest Code List Outdoor unit-Control state Code Description 100 For indoor fan pulsation controlDetail Contents in Request Code 101Fan control state Request code Error content U9 Request code102 Actuator output state Request code103 Outdoor unit --Capacity setting display Request codeOutdoor unit Setting information Request code Contact demand capacity Request code104 105 Indoor unit Model setting information Request codeIndoor unit Capacity setting information Request code Data display See the table on the right106 Disassembly ProcedurePUZ-A18NHA2 PUZ-A18NHA2-BS Operating Procedure Photos PhotoRemoving the electrical parts box Removing the thermistor Outdoor 2-phase pipe TH6107 Thermistor Outdoor pipe TH3Operating Procedure Photos 108Removing linear expansion valve 109Removing the 4-way valve Removing the compressor MC Separator Recover refrigerant110 Removing the accumulator111 Operating Procedure Photos & IllustrationRemoving the service panel and top panel Removing the fan motor MF1Thermistor Discharge TH4 112Removing the thermistor Outdoor pipe TH3 Removing the linear expansion valve coil 113Removing the 4-way valve coil Removing the bypass valve coilRemoving the reactor ACLA24 114Removing the bypass valve Remove 2 receiver leg fixing screws 4 115Removing the reactor DCL A30 116 Removing the fan motor MF1, MF2Remove the top panel. See figure Controller Remove the service panel. See figure Outdoor pipe117 Linear expansion 118Are not oxidized Coil Valve coilRemoving the reactor DCL and capacitor CE Low pressure switch 63L119 DCLRemove 2 back cover panel fixing screws 5 10

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.
Top Page Image Contents