Manuals / Panasonic / Household Appliance / Air Conditioner

Panasonic R410A service manual Processes and functions, Defrost control

Models: R410A

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Defrost control

2. Processes and functions

Defrost control

Defrost control

	Defrost sequence
	Heating operation
	(25-minute mask)
	1 Frost detection
	Defrost start
	(reverse cycle defrost)
		• Operating frequency: 61.8 Hz
	Defrost in progress	• Outdoor unit fan: OFF
	Defrost in progress	• Electronic control valve: step 300
		• Electronic control valve: step 300
		• 4-way valve: OFF
	2 Defrost cancel	• Indoor unit fan: OFF
	3 Start-up operation

(1)Frost detection

1. Outdoor heat exchanger temperature (C1) method (15-minute mask after operation start)

2

2.Outdoor air temperature is 7°F or above and outdoor heat exchanger temperature (C1) of 0°F or below is detected continuously for 20 seconds.

3.Outdoor air temperature is below 7°F and outdoor heat exchanger temperature (C1) of below (outdoor air temperature -10)°F is detected continuously for 20 seconds.

(2)Defrost cancel

•Defrost end conditions

1.Outdoor heat exchanger temperature (C1) rises to 54°F or higher.

2.Outdoor heat exchanger temperature is 45°F or higher continuously for 1 minute.

3.Defrost time of 10 minutes has elapsed.

(3) Startup operation

After defrost ends, the compressors and outdoor unit fan stop for approximately 40 seconds, then operation begins in heating mode.

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Image 138

Panasonic R410A service manual Processes and functions, Defrost control

Contents

Outdoor Unit TECHNICAL DATA & SERVICE MANUALIndoor Unit Model NoWhen Transporting SPECIAL PRECAUTIONSPlease Read Before Starting When Installing…When Servicing Check of Density LimitOthers 1. Care regarding tubing 3. Different tools requiredManifold gauge Vacuum pump Configuration and characteristics of cylinders Fig.Fig. Section 2: PROCESSES AND FUNCTIONS Section 1: SPECIFICATIONSSection 4: SERVICE PROCEDURES Section 3: ELECTRICAL DATA1. SPECIFICATIONS TENTATIVEPOWER SOURCE 1. Specifications 1-1Unit Specifications4-WayCassette Type FEATURESFEATURES 1. Specifications 1-1Unit SpecificationsPOWER SOURCE DIMENSIONS & WEIGHTFEATURES 1. Specifications 1-1Unit SpecificationsPOWER SOURCE DIMENSIONS & WEIGHTFEATURES 1. Specifications 1-1Unit SpecificationsPOWER SOURCE DIMENSIONS & WEIGHTFEATURES 1. Specifications 1-1Unit SpecificationsPOWER SOURCE DIMENSIONS & WEIGHTFEATURES 1. Specifications 1-1Unit SpecificationsPOWER SOURCE DIMENSIONS & WEIGHTPOWER SOURCE Wall Mounted Type1. Specifications 1-1Unit Specifications FEATURESFEATURES 1. Specifications 1-1Unit SpecificationsPOWER SOURCE DIMENSIONS & WEIGHTPOWER SOURCE Ceiling Type1. Specifications 1-1Unit Specifications FEATURESFEATURES 1. Specifications 1-1Unit SpecificationsPOWER SOURCE DIMENSIONS & WEIGHTFEATURES 1. Specifications 1-1Unit SpecificationsPOWER SOURCE DIMENSIONS & WEIGHTFEATURES 1. Specifications 1-1Unit SpecificationsPOWER SOURCE DIMENSIONS & WEIGHTFEATURES 1. Specifications 1-1Unit SpecificationsPOWER SOURCE DIMENSIONS & WEIGHTFEATURES 1. Specifications 1-1Unit SpecificationsPOWER SOURCE DIMENSIONS & WEIGHTPOWER SOURCE Low Silhouette Duct Type1. Specifications 1-1Unit Specifications FEATURESFEATURES 1. Specifications 1-1Unit SpecificationsPOWER SOURCE DIMENSIONS & WEIGHTFEATURES 1. Specifications 1-1Unit SpecificationsPOWER SOURCE DIMENSIONS & WEIGHTFEATURES 1. Specifications 1-1Unit SpecificationsPOWER SOURCE DIMENSIONS & WEIGHTA Indoor Unit 1. Specifications1-2Major Component Specifications DATA SUBJECT TO CHANGE WITHOUT NOTICEA Indoor Unit 1. Specifications1-2Major Component Specifications DATA SUBJECT TO CHANGE WITHOUT NOTICEA Indoor Unit 1. Specifications1-2Major Component Specifications DATA SUBJECT TO CHANGE WITHOUT NOTICERemote controller Optional / Supplied 1. Specifications1-2Major Component Specifications A Indoor UnitA Indoor Unit 1. Specifications1-2Major Component Specifications DATA SUBJECT TO CHANGE WITHOUT NOTICEA Indoor Unit 1. Specifications1-2Major Component Specifications DATA SUBJECT TO CHANGE WITHOUT NOTICEA Indoor Unit 1. Specifications1-2Major Component Specifications DATA SUBJECT TO CHANGE WITHOUT NOTICERemote controller Supplied / Optional 1. Specifications1-2Major Component Specifications A Indoor UnitRemote controller Supplied / Optional 1. Specifications1-2Major Component Specifications A Indoor Unit1-2Major Component Specifications B Outdoor Unit 1. Specifications1. Specifications 1-2Major Component Specifications B Outdoor UnitU-36PE1U6 1. Specifications 1-2Major Component Specifications B Outdoor UnitP-42PE1U6 1. Specifications 1-2Major Component Specifications B Outdoor Unit1. Specifications 1-2Major Component Specifications B Outdoor UnitU-36PS1U6 1. Specifications 1-2Major Component Specifications B Outdoor UnitDATA SUBJECT TO CHANGE WITHOUT NOTICE 1-3Other Component Specifications Outdoor Unit1. Specifications 1-35DATA SUBJECT TO CHANGE WITHOUT NOTICE 1. Specifications1-3Other Component Specifications Outdoor Unit 1-36DATA SUBJECT TO CHANGE WITHOUT NOTICE 1. Specifications1-3Other Component Specifications Outdoor Unit 1-371. Specifications 1-4Dimensional data Indoor unit : 4-WayCassette Type 26 Type1-4Dimensional data Indoor unit : 4-WayCassette Type 36, 42Type1. Specifications 1. Specifications Indoor unit : Wall Mounted Type1-4Dimensional data 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 DataIndoor Unit : 26, 30, 36 Types 1-5Refrigerant Flow DiagramOutdoor Unit : U-26PE1U6, U-26PS1U6 U-36PE1U6, U-36PS1U61. Specifications Outdoor Unit: U-42PE1U6, U-42PS1U61-6Operating Range 1-5Refrigerant Flow DiagramU-26PE1U6, U-26PS1U6 U-36PE1U6, U-36PS1U6 U-42PE1U6, U-42PS1U61. Specifications 1. Specifications 1-8Noise Criterion Curves 4-WayCassette TypeWall Mounted Type 1. Specifications 1-8Noise Criterion Curves208 - 230 V, 1 Phase, 60 Hz S-26PK1U61. Specifications 1-8Noise Criterion Curves Ceiling TypeMODEL 1-8Noise Criterion Curves 1. SpecificationsLow Silhouette Duct Type Outdoor Units 1. Specifications 1-8Noise Criterion CurvesIndoor Fan Performance 1. Specifications 1-9Increasing the Fan SpeedHow to read the diagram 26 TypeModel: 26 Type 1-10Air throw distance chart 4-WayCassette Type1. Specifications Model: 36, 42 Type1. Specifications 1-10Air throw distance chart Wall Mounted TypeModel: 26 Type 1-10Air throw distance chart Ceiling Type1. Specifications Model: 36 TypeControl Wiring 1. SpecificationsGeneral Precautions on Wiring A Inter-UnitControl WiringOutdoor Unit 1. SpecificationsWiring System Diagrams Indoor Unit U1, T1, F1 TypesFor stranded wiring 1. SpecificationsHow to Connect Wiring to the Terminal Fig.Table 1. SpecificationsOutdoor Unit 1. Tubing Size Indoor unit type1. Specifications 2. Check of density limitInstallation space 1. Specifications3. SELECTING THE INSTALLATION SITE Installation requirements3-2. Air-DischargeChamber for Top Discharge 1. Specifications3-3.Installing the Unit in Heavy Snow Areas Countermeasures against snow and windFor U-26PES1U6 / U-36PES1U6unit 1. Specifications3-5.Dimensions of Wind Ducting For U-42PES1U6unitWind 1. SpecificationsU-42PES1U6unit direction1. Specifications U-26PES1U6 / U-36PES1U6 / U-42PES1U6Required space around outdoor unit 1. Specifications 3-6.Dimensions of Snow DuctingFor U-42PES1U6unit 1. Specifications U-42PES1U6unitSpace requirements for setting – 1. SpecificationsReference diagram for snow-proofvents – U-26PES1U6 / U-36PES1U6 / U-42PES1U6Space requirements for setting – 1. SpecificationsReference diagram for snow-proofvents – Installation in front-rearrows4-1.Installing the Outdoor Unit 4. HOW TO INSTALL THE OUTDOOR UNIT1. Specifications 4-3.Routing the Tubing and Wiring5-1.Indoor Unit AVOID 1. SpecificationsIndoor Unit 5. SELECTING THE INSTALLATION SITE Ceiling Type4-WayCassette Type U1 Type 6. HOW TO INSTALL THE INDOOR UNIT1. Specifications 6-1.Suspending the Indoor UnitFig. 1. Specifications6-3.Placing the Unit Inside the Ceiling Fig.Fig. 1. Specifications6-4.Installing the Drain Piping Fig.ing to the outdoor unit are completed 1. Specifications6-5.Checking the Drainage the drainageCeiling Panel 1. Specifications6-6.Before Installing the Ceiling Panel Fig.1. Specifications 6-7.Installing the Ceiling Panel6-8.When Removing the Ceiling Panel for Servicing 2 Installation 1. Specifications1 Accessories a Installing the air-intakeplenumceiling 1. Specificationsd Installing the ceiling panel Fig.Wall Mounted Type K1 Type 1. Specificationstrical wiring or conduits are 6-10.Removing the Wall Fixture from the Unita If Wooden Wall 1. Specifications6-12.Installing the Rear Panel on the Wall b If Block, Brick, Concrete or Similar Type WallHow to replace the grille 1. SpecificationsHow to remove the grille 6-14.Preparing the Indoor Side TubingGeneral Precautions on Wiring 1. Specifications6-15.Wiring Instructions How to remove the cover platewiring to the outdoor unit are completed 1. Specifications6-18.Installing the Drain Hose 6-17.Shaping the Tubing6-19.Suspending the Indoor Unit 1. SpecificationsCeiling Type T1 Type Fig.Fig. 1. SpecificationsFig. Fig.Fig. Fig. 1. SpecificationsFig. Fig.6-20.Duct for Fresh Air 1. Specifications6-21.Installing the Drain Piping Fig.Table 1. SpecificationsLow Silhouette Ducted Type F1 Type Fig.6-23.Suspending the Indoor Unit 1. Specificationsenough to support the weight It is important that you useTighten the hose clamps so 1. SpecificationsFig. 6-24.Installing the Drain Piping their locking nuts face upward6-25.Checking the Drainage 1. Specificationswhen you short the pin on the Be careful since the fan will startHT : Using the booster cable 1. SpecificationsHow to read the diagram 6-26.Increasing the Fan SpeedFig. 1. Specifications6-27.When Installing the Indoor Unit Fig.Symptom 1. SpecificationsCheckpoint after installation SUPPLEMENT ON DRAIN PIPING7-1.Wireless Remote Controller Installation 7. HOW TO INSTALL THE WIRELESS REMOTE CONTROLLER1. Specifications How to Install BatteriesFig. 7-3.Address Switches 1. Specifications7-2.Room Temperature Sensor Setting 7-4.Setting the Model Code1 7-6.Operating Controller Installation 1. Specifications7-5.Indicator Section Installation controller wires together7-8.Operating Controller Installation 1. Specifications7-7.Indicator Section Installation Ceiling Type T1 Type7-10.Test Run Switch 1. Specifications7-9.Electrical Wiring Fig.Alarm 1. Specifications7-11.Misoperation Alarm Indicators Cause of Troublewith the power supply 1. Specificationscontroller wires together wires. Doing so can resultFig. 1. SpecificationsFig. Fig.7-14.Test Run Switch 1. Specifications7-13.Electrical Wiring To avoid placing an8. Transmitter 9. Remote control sensor 1. Specifications7-15.Misoperation Alarm Indicators 10. Temperature setting buttonsBe sure to do the wiring 1. Specifications7-16.Basic Wiring Diagram correctly incorrect wiringGroup control using 2 signal receiving units 1. Specifications7-17.Wiring System Diagram for Group Control Wiring procedureSetting method 1. SpecificationsWhen installing multiple remote controllers 1Basic wiring diagramWireless remote controller transmitter 1. Specifications<CZ-RWSK1U> 7-19.Test Run Procedure Wall mounted Type K1 TypeUsing the controller 1. Specifications7-21-2.Using the remote controller 7-21.Preparing for the Test RunIndoor unit control PCB 1. Specifications7-22.Precautions Outdoor unit control PCBNos. 1, 2 OFF, No. 3 ON 1. SpecificationsS-26PK1U6 Nos. 1, 2, 3 all OFFCause 1. Specifications7-24.Diagnosis Table Indoor unitFig. 1. SpecificationsFlaring Procedure with a Flare Tool Fig.Cautions During Brazing 1. SpecificationsCaution Before Connecting Tubes Tightly Fig.Never grasp the drain or refrigerant connecting 1. SpecificationsPrecautions for Packed Valve Operation outlets when moving the unit4. Taping the Tubes 1. Specifications5. Finishing the Installation Fig.1. Leak Test 1. SpecificationsManifold gauge Fig. Vacuum pump Fig.Use a cylinder speciﬁcally 1. Specifications2. Evacuation designed for use with R410A4.Finishing the Job 1. Specifications3. Charging Additional Refrigerant R410A2-2Cold Draft Prevention Heating Cycle 2. PROCESSES AND FUNCTIONSRoom Temperature Control 2-3Automatic Fan Speed Indoor UnitA Cooling 2. Processes and functions2-1Room Temperature Control Fig. Chart Summary and Explanations2. Processes and functions B Heating Fig. Chart Summary and Explanations2-2Cold Draft Prevention Heating Cycle 2. Processes and functions2. Processes and functions 2-3Automatic Fan Speed Indoor UnitB Heating A CoolingDischarge temperature release control 2-4Control Functions2.Processes and functions Current release controlCurrent release value shift control 2. Processes and functionsOvercurrent protection control Freeze prevention low-temperaturerelease control2. Processes and functions Defrost control2-5Outdoor Unit Control PCB 1 Layout Diagram CR-CH4872R2. Processes and functions 2-6Outdoor Unit Control PCB CR-CH4272R 2. Processes and functions1 Explanation of Functions Table 1. Method of System Address Setting 2. Processes and functionsFig. Page 3. ELECTRICAL DATA Indoor UnitsOutdoor 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-36PF1U63-2Outdoor Units 3. Electrical dataU-26PE1U6 3-2Outdoor Units 3. Electrical data3-2Outdoor Units 3. Electrical dataU-26PS1U6 3-2Outdoor Units 3. Electrical data3-2Outdoor Units 3. Electrical dataU-36PE1U6 3-2Outdoor Units 3. Electrical data3-2Outdoor Units 3. Electrical dataU-36PS1U6 3-2Outdoor Units 3. Electrical data3-2Outdoor Units 3. Electrical dataU-42PE1U6 3-2Outdoor Units 3. Electrical data3-2Outdoor Units 3. Electrical dataU-42PS1U6 3-2Outdoor Units 3. Electrical dataPage 4-2.Symptoms and Parts to Inspect 4. SERVICE PROCEDURES4-1.Meaning of Alarm Messages 4-3.Details of Alarm MessagesWired 4. Service procedures4-1.Meaning of Alarm Messages BlinkingWireless 4. Service proceduresWired remote4. Service procedures RemarksAlarm 4. Service procedures4-2.Symptoms and Parts to Inspect contentscontents 4. Service proceduresAlarm Judgment conditioncontents 4. Service proceduresAlarm Judgment condition1 Alarm “P29” 4. Service procedures4-3.Details of Alarm Messages Input power detection circuit trouble4. Service procedures 2 Alarm “P26”HIC PCB trouble HIC-CH4872R 4. Service procedures3 Alarm “E31” HIC-CH2672R4. Service procedures 4 Alarm P224. Service procedures 5 Alarms “F04,” “F06,” “F07,” “F08,” “F12”Sensor installation 4. Service procedures<Check procedure> Sensor Temperature Correlation TableCheck Pin 4-4.Table of Thermistor Characteristics4. Service procedures 1 Outdoor Air Temp. TO, Intake Temp. TS, Heat5-1.Overview 5. OUTDOOR UNIT MAINTENANCE REMOTE CONTROLAlarm History 5-2.FunctionsOutdoor unit alarm history monitor 5. Outdoor unit maintenance remote controlSystem diagram Setting modesNormal display functions 5. Outdoor unit maintenance remote control5-3.Normal Display Operations and Functions All units start/stop Fig. 1 <Operation>XX= Main bus line outdoor system address 1 – Display contents3XX-YYR.C Item code5. Outdoor unit maintenance remote control button5. Outdoor unit maintenance remote control 5. Outdoor unit maintenance remote control Item code 5. Outdoor unit maintenance remote controlList of Item Codes Parameter5. Outdoor unit maintenance remote control Setting mode 2 <Operating procedure>5. Outdoor unit maintenance remote control List of Item CodesRefrigerant type 6-6.Precautions 6-3.TestRun Procedure6-5.TestRun Using the Remote Controller 6-8.Examples of Wiring DiagramsFig. 6. TEST RUN 6-1.Preparing for Test Run6. Test run Fig.6. Test run U1, K1, T1, F1 Type 6-2.Caution 6-3.TestRun ProcedureFig. 6-4.Items to Check Before the Test Run 6-5.Test Run Using the Remote Controller6-6.Precautions 6. Test runCause Wired remote6. Test run Indoor unit6. Test run 6-8.Examples of Wiring Diagrams Basic wiring diagramFig. 6. Test run Basic wiring diagramFig. 6-6a Wiring procedure Fig. 6-6bSetting the outdoor unit system addresses 6. Test runFig. Main-subremote controller control Remote controller setting mode6. Test run