Panasonic R410A Service procedures Details of Alarm Messages, Alarm P29, MDC trouble

Page 172

4. Service procedures

4-3. Details of Alarm Messages

(1) [Alarm “P29”]

Input power detection circuit trouble

(MDC trouble)

Compressor does not run.

 

 

Breakdown

 

Motor current detection circuit trouble

 

Is power OK?

No

Correct power line.

 

 

 

Yes

 

 

 

 

Is

 

 

 

 

current

No

Check and correct

 

detection

 

circuit wiring

 

wiring.

 

 

OK?

 

 

 

 

Are

 

 

 

 

wiring and

No

Check and correct

 

connector

 

 

wiring.

 

 

connections

 

 

 

 

 

 

 

OK?

 

 

 

 

Yes

 

 

 

 

Is

No

 

 

 

compressor

 

 

 

 

 

 

 

OK?

 

 

Yes

 

 

 

Ground

 

 

 

 

 

Yes

 

fault?

 

 

 

 

 

 

 

 

Coil

Yes

 

 

 

resistor

 

 

 

short circuit?

 

 

 

 

Coil open

Yes

 

 

 

 

 

 

 

circuit?

 

 

 

 

No

 

 

Is there

No

Replace

 

 

 

 

abnormal refrigerant

 

4

 

compressor.

accumulation?

 

 

 

 

 

 

 

 

 

Yes

 

 

 

 

Is

 

Are

 

 

 

 

 

operation of

No

No

 

C1 and TS

 

electronic

 

 

sensors

 

 

control valve

 

 

 

 

OK?

 

 

OK?

 

 

 

 

 

 

 

Yes

 

Replace electronic

 

 

 

 

 

 

control valve.

 

Is there overload?

No

Remove

 

 

 

the cause.

 

 

 

 

 

Yes

Replace outdoor unit control PCB.

Replace compressor.

Replace C1 and TS sensors.

4-8

Page 171 Page 173
Image 172
Page 171 Page 173
Contents Model No Outdoor Units Indoor UnitsFor safe installation and trouble-free operation, you must …In a Room…In Moist or Uneven Locations …In an Area with High WindsCheck of Density Limit Precautions for Installation Using New Refrigerant Configuration and characteristics of cylinders Contents Tentative Specifications Unit Specifications Way Cassette Type Model NoIndoor Unit 36PU1U6 Outdoor Unit 36PE1U6 Indoor Unit 42PU1U6 Outdoor Unit 42PE1U6 Indoor Unit 26PU1U6 Outdoor Unit Indoor Unit 36PU1U6 Outdoor Unit 36PS1U6 Indoor Unit 42PU1U6 Outdoor Unit 42PS1U6 Specifications Unit Specifications Wall Mounted Type Data Subject to Change Without NoticeIndoor Unit 26PK1U6 Outdoor Unit Specifications Unit Specifications Ceiling Type PerformanceIndoor Unit 36PT1U6 Outdoor Unit Indoor Unit 42PT1U6 Outdoor Unit Indoor Unit 26PT1U6 Outdoor Unit 26PS1U6 17˚F BTU / h Moisture removal High Pints / h Indoor Unit 42PT1U6 Outdoor Unit 42PS1U6 Specifications Unit Specifications Low Silhouette Duct Type Net weight Lbs. kg 128 Shipping weight 148 Shipping volumeIndoor Unit 36PF1U6 Outdoor Unit 36PE1U6 RCZ-RTC2 CZ-RWSC1U Major Component Specifications Indoor Unit Fan motorModel No 36PU1U6 Source Model No 42PU1U6 Source Model No 26PK1U6 Source Model No 26PT1U6 Source Model No 36PT1U6 Source Model No 42PT1U6 Source Model No 26PF1U6 Source Model No 36PF1U6 Source Specifications Major Component Specifications Outdoor Unit CompressorCR-CH4872R Microprocessor Lbs. kg R410A 7.9 26PS1U6 230V, 40µF 42PS1U6 Specifications Other Component Specifications Outdoor Unit Model No 26PE1U6, U-26PS1U6Model No 36PE1U6, U-36PS1U6 Model No 42PE1U6, U-42PS1U6 Ø1/8 Hol Page 19/32 31/32 12-7/32 Dimension inch 56-25/32 Air outlet duct flange Thickness more than T1/16 inch Page Page Specifications Temperature Indoor Air Intake Outdoor Air Intake Operating RangePage Specifications Noise Criterion Curves Way Cassette Type SourceSpecifications Noise Criterion Curves Wall Mounted Type Specifications Noise Criterion Curves Ceiling Type Noise Criterion Curves Low Silhouette Duct Type SoundSpecifications Noise Criterion Curves Outdoor Units Specifications Increasing the Fan Speed How to read the diagramIndoor Fan Performance Type TypeModel 26 Type Air throw distance chart Way Cassette TypeModel 36, 42 Type Specifications Air throw distance chart Wall Mounted Type Model 36 Type Air throw distance chart Ceiling TypeModel 42 Type Outdoor Unit Type Time delay fuse or Circuit capacity Wiring System Diagrams How to Connect Wiring to the Terminal For stranded wiring Installation Instructions Ashrae Selecting the Installation Site Air-Discharge Chamber for Top Discharge For U-42PES1U6 unit ① Air discharge chamber ② Air discharge chamber base42PES1U6 unit DirectionFront and both sides must remain open 25-13/32 25/32 30-5/64 Wind direction Obstacle to the front of unit Installation in front-rear rows Routing the Tubing and Wiring Installing the Outdoor UnitDrainage Work Low Silhouette Ducted Type Way Cassette Type Way Cassette Type U1 Type Suspending the Indoor Unit Preparation for SuspendingPlacing the Unit Inside the Ceiling Installing the Drain Piping Checking the Drainage Before Installing the Ceiling Panel Unit bodyInstalling the Ceiling Panel When Removing the Ceiling Panel for ServicingAccessories Installing the ceiling panel Trical wiring or conduits are Selecting and Making a HoleLocated Hole Dia. inchIf Wooden Wall Installing the Rear Panel on the WallIf Block, Brick, Concrete or Similar Type Wall Removing the Grille to Install the Indoor Unit How to remove the grilleHow to replace the grille To mount the indoor unit on the rear panelWiring Instructions General Precautions on Wiring How to remove the cover plateInstalling the Drain Hose Shaping the TubingCeiling Type T1 Type Suspending the Indoor Unit Hinge Slide toward front side Side panel Unit Outside Duct for Fresh Air Good Not goodRequired Minimum Space for Installation and Service Low Silhouette Ducted Type F1 Type26PF1U6 36PF1U6Enough to support the weight It is important that you useExtreme care in supporting Indoor unit inside the ceilingTighten the hose clamps so Their locking nuts face upwardWhen you short the pin on Be careful since the fan will startIndoor control board To mount the tube cover, use 5/16Increasing the Fan Speed Indoor Fan PerformanceWhen Installing the Indoor Unit Checkpoint after installation Checkpoint Symptom RemarkHow to Install Batteries Wireless Remote Controller InstallationIf Wall-mounted Fixed Position Address Switches Room Temperature Sensor SettingSetting the Model Code CZ-RWSU1U Ceiling Type T1 Type Indicator Section Installation Test Run Switch Electrical WiringHow to use the test run setting U1, T1 Types Misoperation Alarm Indicators AlarmCause of Trouble LampIf Wall mounted Fixed Position 107 To avoid placing an Excessive load onEquipment, use this Function only whenTimer Standby Bright Cause of TroubleWiring procedure Will damage the equipmentWiring System Diagram for Group Control Group control using 2 signal receiving unitsSetting method Wireless remote controller transmitter Test Run Procedure Wall mounted Type K1 TypeCheck Items Before the Test Run Indicator Test run Using the controller For S-26PK1U6Controller Precautions Test OFFNos , 2 OFF, No on 26PK1U6Nos , 2, 3 all OFF Cause Diagnosis TableIndoor unit HOW to Install the Timer Wired Remote Controller Tube diameter Tightening torque Tube thickness Precautions for Packed Valve Operation Never grasp the drain or refrigerant connectingInsulating the Refrigerant Tubing Tubing Insulation Tubes arranged togetherFinishing the Installation Taping the TubesManifold gauge Vacuum pump Air Purging with a Vacuum Pump for Test Run PreparationLeak Test Use a cylinder specifically EvacuationDesigned for use with R410A Finishing the Job Charging Additional RefrigerantR410A Processes and Functions Chart Summary and Explanations Processes and functions Room Temperature ControlCooling Processes and functions Heating Cold Draft Prevention Heating Cycle Chart Explanations and notes Automatic Fan Speed Indoor UnitDischarge temperature release control Current release controlOutdoor unit fan control Coil heating controlFreeze prevention low-temperature release control Overcurrent protection controlCurrent release value shift control Heating high-load controlDefrost control Outdoor Unit Control PCB Outdoor Unit Control PCB CR-CH4272R Method of System Address Setting Example of wiringPage Electrical Data Indoor Units Page Electrical data Wall Mounted Type S-26PK1U6 Electrical data Wall Mounted Type S-26PK1U6 Electrical data Ceiling Type S-26PT1U6, S-36PT1U6, S-42PT1U6 Electrical data Ceiling Type S-26PT1U6, S-36PT1U6, S-42PT1U6 Page Page Outdoor Units Outdoor Units 26PS1U6 Outdoor Units 36PE1U6 Outdoor Units 36PS1U6 Outdoor Units 42PE1U6 Outdoor Units 42PS1U6 Outdoor Units Page Service Procedures Service procedures Meaning of Alarm Messages Contents of remote controller switch alarm displayWireless Remarks Remote Alarm Judgment condition Clear condition Contents CorrectionAlarm Eeprom Alarm P29 Service procedures Details of Alarm MessagesMDC trouble Alarm P26 HIC PCB troubleAlarm E31 HIC-CH4872R HIC-CH2672R26, 36 Type Communications Trouble within unitAlarm P22 Alarms F04, F06, F07, F08, F12 Sensor Temperature Correlation Table Check procedureSensor installation Sensor type Location Check Pin Outdoor Air Temp. TO, Intake Temp. TS, HeatExchanger Temp. C1 Sensor, Heat Exchanger Temp. C2 Sensor Discharge Temp. TD SensorsOutdoor Unit Maintenance Remote Control Outdoor unit maintenance remote control Overview All units start/stop Operation Switching between cooling/heating OperationAll units test run Operation Item code Display contents Sample displaysDisplay for unit Nos Item code Meaning of Code Display of first 3 digits Display of last 3 digits List of Item Codes Item code ParameterOutdoor unit maintenance remote control Figures represent the capacity data for each model Test RUN Preparing for Test Run Test runTest run U1, K1, T1, F1 Type 6-2. Caution Items to Check Before the Test Run Cause Test run Examples of Wiring Diagrams Basic wiring diagramRemote controller crossover wiring for group control Setting the outdoor unit system addresses Automatic address setting using the remote controller2P DIP switch Rotary switch System address NoConnecting 2 remote controllers to control 1 indoor unit Main-sub remote controller controlRemote controller setting mode 201201
Related manuals
Manual 112 pages 20.27 Kb

R410A specifications

Panasonic R410A is a refrigerant that has gained significant popularity in the air conditioning and refrigeration industry due to its favorable environmental properties and performance characteristics. Specifically designed to replace the harmful R22 refrigerant, which is being phased out due to its ozone-depleting potential, R410A offers a more eco-friendly alternative without compromising on efficiency or power.

One of the main features of R410A is its high energy efficiency. It operates at a higher pressure than R22, resulting in better heat transfer capabilities. This increased efficiency translates to lower energy consumption, making units using R410A more cost-effective in the long run. Additionally, R410A is known for its ability to provide excellent cooling performance even in high-temperature environments, making it suitable for a variety of applications, from residential air conditioning systems to commercial refrigeration units.

In terms of composition, R410A is a blend of two hydrofluorocarbons (HFCs), namely R32 and R125. This combination not only minimizes ozone depletion potential (ODP) but also reduces global warming potential (GWP) compared to older refrigerants. Panasonic has emphasized the importance of innovative technologies in its products, and R410A aligns perfectly with the company's commitment to developing sustainable solutions.

Panasonic also integrates advanced technologies to optimize the performance of R410A systems. For example, variable speed compressors, known as inverter technology, enhance system efficiency by adjusting the compressor's speed according to the cooling demand. This ensures that energy is only consumed when needed, further reducing operational costs.

Furthermore, R410A has a wide range of applications, including air conditioning systems, heat pumps, and chillers. Its versatility makes it a popular choice among manufacturers and consumers alike. The refrigerant is also compatible with existing R22 equipment, although specific retrofit procedures must be followed to ensure peak performance and reliability.

In conclusion, Panasonic R410A stands out as an innovative refrigerant choice in the HVAC industry, offering a combination of energy efficiency, environmentally friendly properties, and advanced technologies. As regulatory frameworks continue to tighten on greenhouse gas emissions, R410A and similar refrigerants are expected to play a crucial role in shaping a more sustainable future for air conditioning and refrigeration. Its high performance and lower environmental impact solidify its position as a leading refrigerant in contemporary cooling solutions.
Top Page Image Contents