TECHNICAL & SERVICE MANUAL Ceiling Cassettes ... - Engvent.ru

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Thermistor forlower temperatureRoom temperature thermistor(TH1)Pipe temperature thermistor(TH2)Condenser/evaporator temperaturethermistor(TH5)50< Thermistor for lower temperature >40Thermistor R0=15k' ± 3%Fixed number of B=3480k' ± 2%1Rt=15exp { 3480(1273+t 273) }0: 15k'10: 9.6k'20: 6.3k'25: 5.2k'30: 4.3k'40: 3.0k'Resistance (K")3020100-20 -10 0 10 20 30 40 50Temperature (:)Thermistor fordrain sensor10< Thermistor for drain sensor >9Thermistor R0=6.0k' ±5%Fixed number of B=3390k' ±2%1 1Rt= 6 exp { 3390(273+t 273) }0: 6.0k'10: 3.9k'20: 2.6k'25: 2.2k'30: 1.8k'40: 1.3k'Resistance (K")876543210-20 0 20 40 60 80Temperature (:)36
9DISASSEMBLY PROCEDUREPLA-RP3AA.UK, PLA-RP4AA.UKPLA-RP5AA.UK, PLA-RP6AA.UKOPERATING PROCEDURE1. Removing the air intake grille(1) Slide the knob of air intake grille toward the arrow 1 toopen the air intake grille.(2) Remove drop prevention hook from the panel.(3) Slide the shaft in the hinge to the direction of the arrow2and remove the air intake grille.Be careful on removing heavy parts.PHOTOS & ILLUSTRATIONSFigure 1Air intake grilleGrilleAir intake grille knob2. Removing the fan guard(1) Open the air intake grille.(2) Remove the 3 screws of fan guard.Photo 1ScrewsFan guardAir intakegrille3. Removing the room temperature thermistor(1)Remove the fan guard.(See photo 1)(2) Remove the screw in the room temperature thermistorholder to remove the holder and the room temperaturethermistor.(3) Remove the 1 screw from the bell mouth, and unscrew theother 2 screws (fix to the oval hole which has a differentdiameter) to remove the bell mouth.(4) Remove the holder claw, and remove the room temperaturethermistor and holder.(5) Disconnect the connector (red) from the indoor controlboard.Photo 2Bell mouthScrewsRoomtemperaturethermistorAir intake grille4. Removing the electrical box(1) Remove the fan guard.(See photo 1)(2) Disconnect the lead wire of the vane motor from the clamp,and disconnect the white connector (10P).(3) Remove the room temperature thermistor with the holder.(4) Remove the bell mouth.(See photo 2)(5) Disconnect the relay connector in the electrical box.Red (3P) for fan motor power supplyWhite (2P) for pipe temperature detecting thermistorBlack (2P) for condenser/evaporator pipe temperaturedetecting thermistorBlue (2P) for drain pumpWhite (3P) for drain sensor(6) Remove the 3 screws of the electrical box and loosen theother 2 screws to remove the box.Indoor controller boardPower supply boardTerminal blockCapacitorPhoto 3Electrical boxIndoorcontrollerboardConnectorPower supplyboardTerminalblockCapacitorTurbo fanNut37
Page 1 and 2: NOT AVAILABLE˚CAMPMAMPMSTAND BYDEF
Page 3 and 4: UnitGravimeter[3] Service toolsUse
Page 5 and 6: ● DisplayCENTRALLYCONTROLLED disp
Page 7 and 8: 3SPECIFICATIONSService Ref.ItemFunc
Page 9 and 10: ItemService Ref.FunctionCapacityBtu
Page 11 and 12: 11DATA44-1. PERFORMANCE DATA4-1-1.
Page 13 and 14: 13COOLING CAPACITY (3)PLA-RP4AA.UK
Page 19 and 20: 4-1-2. HEATING CAPACITYPUHZ-RP3VHA,
Page 21 and 22: 4-3. STANDARD OPERATION DATAHeat pu
Page 23 and 24: 5OUTLINES AND DIMENSIONSPLA-RP3AA.U
Page 25 and 26: 7REFRIGERANT SYSTEM DIAGRAMPLA-RP3A
Page 27 and 28: 8-2. SELF-DIAGNOSIS ACTION TABLEErr
Page 29 and 30: Error Code Meaning of error code an
Page 31 and 32: 8-4. EMERGENCY OPERATION8-4-1. When
Page 33 and 34: 8-5-2. Controller boardPLA-RP3AA.UK
Page 35: 8-7. HOW TO CHECK THE PARTSPLA-RP3A
Page 39 and 40: OPERATING PROCEDURE9. Removing the
Page 41 and 42: FUNCTIONAL PARTSPLA-RP3AA.UKPLA-RP4
Page 43 and 44: FUNCTIONAL PARTSPLA-RP3AA.UKPLA-RP4
Page 45 and 46: 11OPTIONAL PARTS11-1. TIMERPart No.
Page 47 and 48: 11-2. MULTI-FUNCTIONAL CASEMENTPart

TECHNICAL & SERVICE MANUAL Ceiling Cassettes ... - Engvent.ru

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