Mitsubishi Electronics PUZ-A30NHA2-BS, PUZ-A42NHA2-BS, PUY-A36NHA2, PUZ-A18NHA2-BS U9,UH

Page 34
Remark
Number of blinks/beeps in pattern indicates the check code in the following table
Remark

•Refer to the following tables for details on the check codes. [Output pattern A]

Beeper sounds Beep

 

 

 

Beep

Beep

Beep

Beep

 

 

Beep

Beep

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OPERATION

 

 

 

 

 

 

 

 

1st

 

2nd

 

 

3rd

 

 

nth

 

 

 

 

 

1st

 

 

2nd · · · Repeated

INDICATOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

lamp blink

 

 

 

 

 

Off

 

 

On

On

 

On

 

On

Off

 

 

On

 

On

pattern

 

 

 

 

 

 

 

 

 

 

 

 

Self-check

Approx. 2.5 sec. 0.5 sec. 0.5 sec. 0.5 sec.

0.5 sec. Approx. 2.5 sec. 0.5 sec.

 

0.5 sec.

 

 

 

starts

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Start signal

Number of blinks/beeps in pattern indicates the check

Number of blinks/beeps in pattern indicates

 

received)

 

 

 

code in the following table (i.e., n=5 for “P5”)

 

the check code in the following table

 

 

 

 

 

 

 

[Output pattern B]

Beeper sounds Beep

 

OPERATION

 

 

INDICATOR

 

 

lamp blink

 

Off

pattern

Self-check

Approx. 2.5 sec.

 

starts (Start signal received)

 

 

 

 

 

 

Beep

Beep

Beep

 

Beep

 

 

 

 

 

 

 

 

 

 

 

 

1st

 

 

2nd

 

 

3rd

 

 

 

nth

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

On

 

 

 

On

 

On

 

On

 

 

On

 

Off

 

 

 

 

Approx. 3 sec.

 

 

0.5 sec. 0.5 sec. 0.5 sec.

 

0.5 sec.

Approx. 2.5 sec.

 

Number of blinks/beeps in pattern indicates the check code in the following table (i.e., n=5 for “U2”)

 

 

Beep

Beep

 

 

 

 

 

 

 

 

 

 

1st

 

2nd · · · Repeated

On

 

 

On

On

Approx. 3 sec.

 

0.5 sec.

0.5 sec.

[Output pattern A] Errors detected by indoor unit

Wireless remote controller

Wired remote controller

 

 

Beeper sounds/OPERATION

 

Symptom

 

INDICATOR lamp blinks

1 Check code

 

 

 

(Number of times)

 

 

 

1

P1

Intake sensor error

 

2

P2

Pipe (TH2) sensor error

 

P9

Pipe (TH5) sensor error

 

 

 

3

E6,E7

Indoor/outdoor unit communication error

 

4

P4

Drain sensor error / Float switch connector open

 

5

P5

Drain pump error

As for indoor

PA

Forced compressor stop(due to water leakage abnormality)

 

unit, refer to

6

P6

Freezing/ Overheating protection operation

indoor unit's

7

EE

Communication error between indoor and outdoor units

service manual.

8

P8

Pipe temperature error

 

9

E4, E5

Remote controller signal receiving error

 

10

–

–

 

11

–

–

 

12

Fb

Indoor unit control system error (memory error, etc.)

 

–

E0, E3

Remote controller transmission error

 

–

E1, E2

Remote controller control board error

 

[Output pattern B] Errors detected by unit other than indoor unit (outdoor unit, etc.)

 

 

 

 

 

Wireless remote controller

Wired remote controller

 

 

Beeper sounds/OPERATION

 

Symptom

 

INDICATOR lamp blinks

Check code

 

 

 

(Number of times)

 

 

 

1

E9

Indoor/outdoor unit communication error

 

(Transmitting error) (Outdoor unit)

 

 

 

 

2

UP

Compressor overcurrent interruption

 

3

U3,U4

Open/short of outdoor unit thermistors

 

4

UF

Compressor overcurrent interruption (When compressor locked)

 

5

U2

Abnormal high discharging temperature/ insufficient refrigerant

For details, check

 

 

 

 

 

Abnormal high pressure (63H worked)/ Overheating

6

U1,Ud

the LED display

protection operation

 

 

of the outdoor

 

 

 

7

U5

Abnormal temperature of heatsink

controller board.

8

U8

Outdoor unit fan protection stop

 

9

U6

Compressor overcurrent interruption/Abnormal of power module

 

11

U9,UH

Abnormality such as overvoltage or voltage shortage and

 

abnormal synchronous signal to main circuit/Current sensor error

 

 

 

 

 

 

 

 

12

–

–

 

13

–

–

 

14

Others

Other errors

 

*1 If the beeper does not sound again after the initial 2 beeps to confirm the self-check start signal was received and

the OPERATION INDICATOR lamp does not come on, there are no error records.

*2 If the beeper sounds 3 times continuously “beep, beep, beep (0.4 + 0.4 + 0.4 sec.)” after the initial 2 beeps to confirm the self-check start signal was received, the specified refrigerant address is incorrect.

34

Page 33 Page 35
Image 34
Page 33 Page 35
Contents Contents Parts Catalog OCB429Reference Manual Indoor UnitSafety Precaution Always Observe for SafetyWhen charging directly from cylinder Additional refrigerant chargeR22 PUZ-A18NHA2 PUZ-A18NHA2-BS PUY-A12/18NHA2 PUY-A12/18NHA2-BS FeaturesPUZ-A42NHA2 PUZ-A42NHA2-BS PUY-A42NHA2 PUY-A42NHA2-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 runSymptoms in test run mode Cause Remote Controller Display Operating proceduresContents of inferior phenomena Test run for wireless remote controller When a Problem Occurs During Operation HOW to Proceed SELF-DIAGNOSISSelf-Diagnosis During Maintenance or Service 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 LossnayVCTF, VCTFK, CVV CVS, VVR, VVF, VCT Troubleshooting by Inferior PhenomenaPhenomena Factor Countermeasure 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 malfunctionWith Airflow Direction… With Blower…There might be a case that 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 thermistorOperation summary of the linear expansion valve Output pulse signal and the valve operationLinear expansion valve operation 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 ActmLower side Upper sideL1, L2 Function Action by the switch operation Effective timing Function of SWITCHES, Connectors and JumpersFunction of switches OFF2Function of connector SW950% Special function75% 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 allSetting No Settings Mode No.11PLA-BA PCA-GA 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 the 4-way valve 109Removing linear expansion 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 MF1Removing the thermistor Outdoor pipe TH3 112Thermistor Discharge TH4 Removing the linear expansion valve coil 113Removing the 4-way valve coil Removing the bypass valve coilRemoving the bypass valve 114Removing the reactor ACLA24 Removing the reactor DCL A30 115Remove 2 receiver leg fixing screws 4 116 Removing the fan motor MF1, MF2117 Remove the service panel. See figure Outdoor pipeRemove the top panel. See figure Controller 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