Manuals / Panasonic / Household Appliance / Air Conditioner

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

Models: R410A

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4. Service procedures

4-3. Details of Alarm Messages

(1) [Alarm “P29”]	Input power detection circuit trouble
(MDC trouble)	Compressor does not run.
	Compressor does not run.
	Breakdown
	Motor current detection circuit trouble

	Is power OK?	No	Correct power line.
	Is power OK?		Correct power line.
	Yes
	Is
	current	No	Check and correct
	detection	No	Check and correct
	circuit wiring		wiring.
	OK?
	Are
	wiring and	No	Check and correct
	connector	No	Check and correct
	connector		wiring.
	connections		wiring.
	connections
	OK?
	Yes
	Is	No
	compressor	No
	compressor
	OK?			Yes
			Ground	Yes
			Ground
	Yes		fault?
	Yes
			Coil	Yes
			resistor	Yes
			short circuit?
			Coil open	Yes
			Coil open
			circuit?
			No
	Is there	No	Replace
	Is there
	abnormal refrigerant
4	abnormal refrigerant		compressor.
	accumulation?		compressor.
	accumulation?

	Yes
	Is		Are
	Is
	operation of	No		No
	operation of		C1 and TS
	electronic		C1 and TS
	electronic		sensors
	control valve		sensors
	control valve		OK?
	OK?		OK?
	OK?
	Yes		Replace electronic
			Replace electronic
			control valve.
	Is there overload?	No	Remove
	Is there overload?		the cause.
			the cause.

Yes

Replace outdoor unit control PCB.

Replace compressor.

Replace C1 and TS sensors.

4-8

Page 172

Image 172

Panasonic R410A Service procedures, Details of Alarm Messages, Alarm “P29”, Input power detection circuit trouble

Contents

TECHNICAL DATA & SERVICE MANUAL Indoor UnitOutdoor Unit Model NoSPECIAL PRECAUTIONS Please Read Before StartingWhen Transporting When Installing…Check of Density Limit When ServicingOthers 3. Different tools required 1. Care regarding tubingManifold gauge Vacuum pump Fig. Configuration and characteristics of cylindersFig. Section 1: SPECIFICATIONS Section 4: SERVICE PROCEDURESSection 2: PROCESSES AND FUNCTIONS Section 3: ELECTRICAL DATA1. SPECIFICATIONS TENTATIVE1. Specifications 1-1Unit Specifications 4-WayCassette TypePOWER SOURCE FEATURES1. Specifications 1-1Unit Specifications POWER SOURCEFEATURES DIMENSIONS & WEIGHT1. Specifications 1-1Unit Specifications POWER SOURCEFEATURES DIMENSIONS & WEIGHT1. Specifications 1-1Unit Specifications POWER SOURCEFEATURES DIMENSIONS & WEIGHT1. Specifications 1-1Unit Specifications POWER SOURCEFEATURES DIMENSIONS & WEIGHT1. Specifications 1-1Unit Specifications POWER SOURCEFEATURES DIMENSIONS & WEIGHTWall Mounted Type 1. Specifications 1-1Unit SpecificationsPOWER SOURCE FEATURES1. Specifications 1-1Unit Specifications POWER SOURCEFEATURES DIMENSIONS & WEIGHTCeiling Type 1. Specifications 1-1Unit SpecificationsPOWER SOURCE FEATURES1. Specifications 1-1Unit Specifications POWER SOURCEFEATURES DIMENSIONS & WEIGHT1. Specifications 1-1Unit Specifications POWER SOURCEFEATURES DIMENSIONS & WEIGHT1. Specifications 1-1Unit Specifications POWER SOURCEFEATURES DIMENSIONS & WEIGHT1. Specifications 1-1Unit Specifications POWER SOURCEFEATURES DIMENSIONS & WEIGHT1. Specifications 1-1Unit Specifications POWER SOURCEFEATURES DIMENSIONS & WEIGHTLow Silhouette Duct Type 1. Specifications 1-1Unit SpecificationsPOWER SOURCE FEATURES1. Specifications 1-1Unit Specifications POWER SOURCEFEATURES DIMENSIONS & WEIGHT1. Specifications 1-1Unit Specifications POWER SOURCEFEATURES DIMENSIONS & WEIGHT1. Specifications 1-1Unit Specifications POWER SOURCEFEATURES DIMENSIONS & WEIGHT1. Specifications 1-2Major Component SpecificationsA Indoor Unit DATA SUBJECT TO CHANGE WITHOUT NOTICE1. Specifications 1-2Major Component SpecificationsA Indoor Unit DATA SUBJECT TO CHANGE WITHOUT NOTICE1. Specifications 1-2Major Component SpecificationsA Indoor Unit DATA SUBJECT TO CHANGE WITHOUT NOTICE1. Specifications 1-2Major Component SpecificationsRemote controller Optional / Supplied A Indoor Unit1. Specifications 1-2Major Component SpecificationsA Indoor Unit DATA SUBJECT TO CHANGE WITHOUT NOTICE1. Specifications 1-2Major Component SpecificationsA Indoor Unit DATA SUBJECT TO CHANGE WITHOUT NOTICE1. Specifications 1-2Major Component SpecificationsA Indoor Unit DATA SUBJECT TO CHANGE WITHOUT NOTICE1. Specifications 1-2Major Component SpecificationsRemote controller Supplied / Optional A Indoor Unit1. Specifications 1-2Major Component SpecificationsRemote controller Supplied / Optional A Indoor Unit1-2Major Component Specifications B Outdoor Unit 1. Specifications1-2Major Component Specifications B Outdoor Unit 1. SpecificationsU-36PE1U6 1-2Major Component Specifications B Outdoor Unit 1. SpecificationsP-42PE1U6 1. Specifications 1-2Major Component Specifications B Outdoor Unit1-2Major Component Specifications B Outdoor Unit 1. SpecificationsU-36PS1U6 1. Specifications 1-2Major Component Specifications B Outdoor Unit1-3Other Component Specifications Outdoor Unit 1. SpecificationsDATA SUBJECT TO CHANGE WITHOUT NOTICE 1-351. Specifications 1-3Other Component Specifications Outdoor UnitDATA SUBJECT TO CHANGE WITHOUT NOTICE 1-361. Specifications 1-3Other Component Specifications Outdoor UnitDATA SUBJECT TO CHANGE WITHOUT NOTICE 1-371. Specifications 1-4Dimensional data Indoor unit : 4-WayCassette Type 26 TypeIndoor unit : 4-WayCassette Type 36, 42Type 1-4Dimensional data1. Specifications Indoor unit : Wall Mounted Type 1-4Dimensional data1. Specifications Drain and wiring port 3-5/32Indoor unit : Ceiling Type 26 Type 1. Specifications 1-4Dimensional dataIndoor unit : Ceiling Type 36, 42 Type 1. Specifications 1-4Dimensional dataIndoor unit : Low Silhouette Duct Type 26 Type 1. Specifications 1-4Dimensional dataIndoor unit : Low Silhouette Duct Type 36 Type 1. Specifications 1-4Dimensional dataIndoor unit : Low Silhouette Duct Type 1. Specifications 1-4Dimensional data1. Specifications 1-4Dimensional Data B Outdoor Unit: U-42PE1U6, U-42PS1U6 1. Specifications 1-4Dimensional Data1-5Refrigerant Flow Diagram Outdoor Unit : U-26PE1U6, U-26PS1U6Indoor Unit : 26, 30, 36 Types U-36PE1U6, U-36PS1U6Outdoor Unit: U-42PE1U6, U-42PS1U6 1-6Operating Range1. Specifications 1-5Refrigerant Flow DiagramU-42PE1U6, U-42PS1U6 U-26PE1U6, U-26PS1U6 U-36PE1U6, U-36PS1U61. Specifications 1. Specifications 1-8Noise Criterion Curves 4-WayCassette Type1. Specifications 1-8Noise Criterion Curves 208 - 230 V, 1 Phase, 60 HzWall Mounted Type S-26PK1U6Ceiling Type 1. Specifications 1-8Noise Criterion CurvesMODEL 1. Specifications 1-8Noise Criterion CurvesLow Silhouette Duct Type Outdoor Units 1. Specifications 1-8Noise Criterion Curves1. Specifications 1-9Increasing the Fan Speed How to read the diagramIndoor Fan Performance 26 Type1-10Air throw distance chart 4-WayCassette Type 1. SpecificationsModel: 26 Type Model: 36, 42 Type1. Specifications 1-10Air throw distance chart Wall Mounted Type1-10Air throw distance chart Ceiling Type 1. SpecificationsModel: 26 Type Model: 36 Type1. Specifications General Precautions on WiringTime delay fuse or Time delay fuse or1. Specifications Wiring System DiagramsOutdoor Unit Indoor Unit U1, T1, F1 Types1. Specifications How to Connect Wiring to the TerminalFor stranded wiring Fig.1. Specifications Outdoor Unit 1. Tubing SizeTable Indoor unit type1. Specifications 2. Check of density limit1. Specifications 3. SELECTING THE INSTALLATION SITEInstallation space Installation requirements1. Specifications 3-3.Installing the Unit in Heavy Snow Areas3-2. Air-DischargeChamber for Top Discharge Countermeasures against snow and wind1. Specifications 3-5.Dimensions of Wind DuctingFor U-26PES1U6 / U-36PES1U6unit For U-42PES1U6unit1. Specifications U-42PES1U6unitWind directionU-26PES1U6 / U-36PES1U6 / U-42PES1U6 1. SpecificationsRequired space around outdoor unit 3-6.Dimensions of Snow Ducting 1. SpecificationsFor U-42PES1U6unit 1. Specifications U-42PES1U6unit1. Specifications Reference diagram for snow-proofvents –Space requirements for setting – U-26PES1U6 / U-36PES1U6 / U-42PES1U61. Specifications Reference diagram for snow-proofvents –Space requirements for setting – Installation in front-rearrows4. HOW TO INSTALL THE OUTDOOR UNIT 1. Specifications4-1.Installing the Outdoor Unit 4-3.Routing the Tubing and Wiring1. Specifications Indoor Unit 5. SELECTING THE INSTALLATION SITE5-1.Indoor Unit AVOID Ceiling Type6. HOW TO INSTALL THE INDOOR UNIT 1. Specifications4-WayCassette Type U1 Type 6-1.Suspending the Indoor Unit1. Specifications 6-3.Placing the Unit Inside the CeilingFig. Fig.1. Specifications 6-4.Installing the Drain PipingFig. Fig.1. Specifications 6-5.Checking the Drainageing to the outdoor unit are completed the drainage1. Specifications 6-6.Before Installing the Ceiling PanelCeiling Panel Fig.6-7.Installing the Ceiling Panel 1. Specifications6-8.When Removing the Ceiling Panel for Servicing 1. Specifications 1 Accessories2 Installation a Installing the air-intakeplenum1. Specifications d Installing the ceiling panelceiling Fig.1. Specifications trical wiring or conduits areWall Mounted Type K1 Type 6-10.Removing the Wall Fixture from the Unit1. Specifications 6-12.Installing the Rear Panel on the Walla If Wooden Wall b If Block, Brick, Concrete or Similar Type Wall1. Specifications How to remove the grilleHow to replace the grille 6-14.Preparing the Indoor Side Tubing1. Specifications 6-15.Wiring InstructionsGeneral Precautions on Wiring How to remove the cover plate1. Specifications 6-18.Installing the Drain Hosewiring to the outdoor unit are completed 6-17.Shaping the Tubing1. Specifications Ceiling Type T1 Type6-19.Suspending the Indoor Unit Fig.1. Specifications Fig.Fig. Fig.1. Specifications Fig.Fig. Fig. Fig.1. Specifications 6-21.Installing the Drain Piping6-20.Duct for Fresh Air Fig.1. Specifications Low Silhouette Ducted Type F1 TypeTable Fig.1. Specifications enough to support the weight6-23.Suspending the Indoor Unit It is important that you use1. Specifications Fig. 6-24.Installing the Drain PipingTighten the hose clamps so their locking nuts face upward1. Specifications when you short the pin on the6-25.Checking the Drainage Be careful since the fan will start1. Specifications How to read the diagramHT : Using the booster cable 6-26.Increasing the Fan Speed1. Specifications 6-27.When Installing the Indoor UnitFig. Fig.1. Specifications Checkpoint after installationSymptom SUPPLEMENT ON DRAIN PIPING7. HOW TO INSTALL THE WIRELESS REMOTE CONTROLLER 1. Specifications7-1.Wireless Remote Controller Installation How to Install Batteries1. Specifications 7-2.Room Temperature Sensor SettingFig. 7-3.Address Switches 7-4.Setting the Model Code1. Specifications 7-5.Indicator Section Installation1 7-6.Operating Controller Installation controller wires together1. Specifications 7-7.Indicator Section Installation7-8.Operating Controller Installation Ceiling Type T1 Type1. Specifications 7-9.Electrical Wiring7-10.Test Run Switch Fig.1. Specifications 7-11.Misoperation Alarm IndicatorsAlarm Table1. Specifications controller wires togetherwith the power supply wires. Doing so can result1. Specifications Fig.Fig. Fig.1. Specifications 7-13.Electrical Wiring7-14.Test Run Switch To avoid placing an1. Specifications 7-15.Misoperation Alarm Indicators8. Transmitter 9. Remote control sensor 10. Temperature setting buttons1. Specifications 7-16.Basic Wiring DiagramBe sure to do the wiring correctly incorrect wiring1. Specifications 7-17.Wiring System Diagram for Group ControlGroup control using 2 signal receiving units Wiring procedure1. Specifications When installing multiple remote controllersSetting method 1Basic wiring diagram1. Specifications <CZ-RWSK1U> 7-19.Test Run ProcedureWireless remote controller transmitter Wall mounted Type K1 Type1. Specifications 7-21-1.Changing the room temperature sensor7-21-2.Using the remote controller Using the controller1. Specifications 7-22.PrecautionsIndoor unit control PCB Outdoor unit control PCB1. Specifications S-26PK1U6Nos. 1, 2 OFF, No. 3 ON Nos. 1, 2, 3 all OFF1. Specifications 7-24.Diagnosis TableCause Indoor unit1. Specifications Flaring Procedure with a Flare ToolFig. Fig.1. Specifications Caution Before Connecting Tubes TightlyCautions During Brazing Fig.1. Specifications Precautions for Packed Valve OperationNever grasp the drain or refrigerant connecting outlets when moving the unit1. Specifications 5. Finishing the Installation4. Taping the Tubes Fig.1. Specifications Manifold gauge Fig. Vacuum pumpFig. 1. Leak Test1. Specifications 2. EvacuationUse a cylinder speciﬁcally designed for use with R410A1. Specifications 3. Charging Additional Refrigerant4.Finishing the Job R410ARoom Temperature Control 2. PROCESSES AND FUNCTIONS2-2Cold Draft Prevention Heating Cycle 2-3Automatic Fan Speed Indoor Unit2-1Room Temperature Control 2. Processes and functionsA Cooling Fig. Chart Summary and Explanations2. Processes and functions B Heating Fig. Chart Summary and Explanations2-2Cold Draft Prevention Heating Cycle 2. Processes and functions2-3Automatic Fan Speed Indoor Unit B Heating2. Processes and functions A Cooling2-4Control Functions 2.Processes and functionsDischarge temperature release control Current release controlFreeze prevention low-temperaturerelease control 2. Processes and functionsOvercurrent protection control Current release value shift control2. Processes and functions Defrost control1 Layout Diagram CR-CH4872R 2-5Outdoor Unit Control PCB2. Processes and functions 2. Processes and functions 2-6Outdoor Unit Control PCB CR-CH4272R1 Explanation of Functions 2. Processes and functions Table 1. Method of System Address SettingFig. Page Indoor Units 3. ELECTRICAL DATAOutdoor Units 3-1Indoor Units 3. Electrical data3. Electrical data 3. Electrical data Wall Mounted Type : S-26PK1U63. Electrical data Wall Mounted Type : S-26PK1U63. Electrical data Ceiling Type : S-26PT1U6, S-36PT1U6, S-42PT1U63. Electrical data Ceiling Type : S-26PT1U6, S-36PT1U6, S-42PT1U63. Electrical data Low Silhouette Ducted Type : S-26PF1U6, S-36PF1U63. Electrical data Low Silhouette Ducted Type : S-26PF1U6, S-36PF1U63. Electrical data 3-2Outdoor UnitsU-26PE1U6 3-2Outdoor Units 3. Electrical data3. Electrical data 3-2Outdoor UnitsU-26PS1U6 3-2Outdoor Units 3. Electrical data3. Electrical data 3-2Outdoor UnitsU-36PE1U6 3-2Outdoor Units 3. Electrical data3. Electrical data 3-2Outdoor UnitsU-36PS1U6 3-2Outdoor Units 3. Electrical data3. Electrical data 3-2Outdoor UnitsU-42PE1U6 3-2Outdoor Units 3. Electrical data3. Electrical data 3-2Outdoor UnitsU-42PS1U6 3-2Outdoor Units 3. Electrical dataPage 4. SERVICE PROCEDURES 4-1.Meaning of Alarm Messages4-2.Symptoms and Parts to Inspect 4-3.Details of Alarm Messages4. Service procedures 4-1.Meaning of Alarm MessagesWired Blinking4. Service procedures WiredWireless remote4. Service procedures Remarks4. Service procedures 4-2.Symptoms and Parts to InspectAlarm contents4. Service procedures Alarmcontents Judgment condition4. Service procedures Alarmcontents Judgment condition4. Service procedures 4-3.Details of Alarm Messages1 Alarm “P29” Input power detection circuit trouble2 Alarm “P26” 4. Service proceduresHIC PCB trouble 4. Service procedures 3 Alarm “E31”HIC-CH4872R HIC-CH2672R4. Service procedures 4 Alarm P224. Service procedures 5 Alarms “F04,” “F06,” “F07,” “F08,” “F12”4. Service procedures <Check procedure>Sensor Temperature Correlation Table Sensor installation4-4.Table of Thermistor Characteristics 4. Service proceduresCheck Pin 1 Outdoor Air Temp. TO, Intake Temp. TS, Heat5. OUTDOOR UNIT MAINTENANCE REMOTE CONTROL TemperaturesAlarm History 5-1.Overview5. Outdoor unit maintenance remote control System diagramTemperature monitor Outdoor unit alarm history monitor5. Outdoor unit maintenance remote control 5-3.Normal Display Operations and FunctionsNormal display functions All units start/stop Fig. 1 <Operation>Display contents 3XX-YYR.CXX= Main bus line outdoor system address 1 – Item code5. Outdoor unit maintenance remote control button5. Outdoor unit maintenance remote control 5. Outdoor unit maintenance remote control 5. Outdoor unit maintenance remote control List of Item CodesItem code Parameter5. Outdoor unit maintenance remote control Setting mode 2 <Operating procedure>List of Item Codes 5. Outdoor unit maintenance remote controlRefrigerant type 6-3.TestRun Procedure 6-5.TestRun Using the Remote Controller6-6.Precautions 6-8.Examples of Wiring Diagrams6. TEST RUN 6-1.Preparing for Test Run 6. Test runFig. Fig.6-3.TestRun Procedure 6. Test run U1, K1, T1, F1 Type 6-2.CautionFig. 6-5.Test Run Using the Remote Controller 6-6.Precautions6-4.Items to Check Before the Test Run 6. Test runWired remote 6. Test runCause Indoor unitBasic wiring diagram 6. Test run 6-8.Examples of Wiring DiagramsFig. Basic wiring diagram Fig. 6-6a Wiring procedure6. Test run Fig. 6-6b6. Test run Setting the outdoor unit system addressesFig. Remote controller setting mode Main-subremote controller control6. Test run

(1) [Alarm “P29”]

Input power detection circuit trouble

(MDC trouble)

Compressor does not run.

Breakdown