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TECHNICAL & SERVICE MANUAL

Indoor unit
[Model names]

[Service Ref.]

PLFY-P20VCM-E

PLFY-P20VCM-E.TH

PLFY-P25VCM-E

PLFY-P25VCM-E.TH

PLFY-P32VCM-E

PLFY-P32VCM-E.TH

PLFY-P40VCM-E

PLFY-P40VCM-E.TH

No. OC314

INDOOR UNIT

Ceiling Cassettes

CONTENTS

1. SAFETY PRECAUTION··························2

2. PART NAMES AND FUNCTIONS ··········6

3. SPECIFICATIONS···································8

4. 4-WAY AIR FLOW SYSTEM·················10

5. OUTLINES AND DIMENSIONS············12

6. WIRING DIAGRAM ·······························13

7. REFRIGERANT SYSTEM DIAGRAM ·····14

8. DISASSEMBLY PROCEDURE ·············15

9. TROUBLE SHOOTING ·························18

10 . PARTS LIST··········································25

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

R407C

R22

R410A

Model name
indication

Series PLFY

OC314--1.qxp 04.8.27 11:43 Page 1

Содержание PLFY-P20VCM-E

Страница 1: ... TH No OC314 INDOOR UNIT Ceiling Cassettes CONTENTS 1 SAFETY PRECAUTION 2 2 PART NAMES AND FUNCTIONS 6 3 SPECIFICATIONS 8 4 4 WAY AIR FLOW SYSTEM 10 5 OUTLINES AND DIMENSIONS 12 6 WIRING DIAGRAM 13 7 REFRIGERANT SYSTEM DIAGRAM 14 8 DISASSEMBLY PROCEDURE 15 9 TROUBLE SHOOTING 18 10 PARTS LIST 25 SPLIT TYPE HEAT PUMP AIR CONDITIONERS R407C R22 R410A Model name indication Series PLFY ...

Страница 2: ...rts If large amount of mineral oil enter that can cause deterioration of refrigerant oil etc Use liquid refrigerant to charge the system If gas refrigerant is used to seal the system the composition of the refrigerant in the cylinder will change and performance may drop Do not use a refrigerant other than R407C If another refrigerant R22 etc is used the chlorine in the refrigerant may cause the lu...

Страница 3: ...cuum pump 6 Refrigerant charge base 7 Refrigerant cylinder For R407C Top of cylinder Brown Cylinder with syphon 8 Refrigerant recovery equipment 2 Refrigerant recharging 1 Refrigerant recharging process 1Direct charging from the cylinder R407C cylinder are available on the market has a syphon pipe Leave the syphon pipe cylinder standing and recharge it By liquid refrigerant 2 Recharge in refrigera...

Страница 4: ...ols with care If dirt dust or moisture enter into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of com pressor Do not use a charging cylinder If a charging cylinder is used the composition of refrigera nt will change and the efficiency will be lowered Flare tool Electronic refrigerant charging scale Vacuum pump adaptor Size adjustment gauge Gauge manifold Torque ...

Страница 5: ...rmed with the cylinder of syphon stood vertically Refrigerant is charged from liquid phase Gravimeter Unit 3 Service tools Use the below service tools as exclusive tools for R410A refrigerant No Specifications 1 Gauge manifold Only for R410A Use the existing fitting specifications UNF1 2 Use high tension side pressure of 5 3MPa G or over 2 Charge hose Only for R410A Use pressure performance of 5 0...

Страница 6: ... button This sets the room temperature The temperature setting can be performed in 1 units Setting range Cooler 19 to 30 Heater 17 to 28 TEMP ADJUSTMENT button This switches between continuous operation and the timer operation TIMER button This switches between the operation and stop modes each time it is pressed The lamp on this button lights during operation ON OFF button Only press this button ...

Страница 7: ... CLOCK display The current time start time and stop time can be displayed in ten second intervals by pressing the time switch button The start time or stop time is always displayed during the timer operation Display In this display example on the bot tom left a condition where all dis play lamps light is shown for expla nation purposes although this differs from actual operation Operation lamp Thi...

Страница 8: ...LFY P20VCM E TH PLFY P40VCM E TH 2 2 2 5 0 011 35 31 28 37 31 29 38 33 29 39 34 30 0 015 0 020 10 9 8 Unit Galvanized sheets with gray heat insulation Grills ABS resin Munsell 0 70Y 8 59 0 97 208 20 570 650 570 650 Cross fin Turbo fan 1 0 Polyethylene sheet PP honey comb fabric O D 32 PVC pipe VP 25 connectable Single phase 220 230 240V 50Hz V Hz 2 8 3 2 3 6 4 0 4 5 5 0 0 06 0 06 0 28 0 28 0 05 0 ...

Страница 9: ... Liquid Thermistor Pipe temperature detection Gas Fuse Indoor controller board Fan motor with Thermal fuse Thermal fuse Electric heater Condensation proof Power supply terminal block Transmission terminal block MA remote controller terminal block 6 pole OUTPUT 15W PK6V15 LC 6 pole OUTPUT 11W PK6V11 LE 6 pole OUTPUT 20W PK6V20 LK 6 pole OUTPUT 20W PK6V20 LJ MSBPC20M13 DC12V 300 phase PLD 12230ME 1 ...

Страница 10: ...ase amount of fresh air intake dust sys tem for air flow amount Q Pa E Static pressure of indoor unit with air flow amount Q Qa Estimated amount of fresh air intake with out D m3 min m3 min Pa Pa Pa Pa How to read curves NOTE Fresh air intake amount should be 20 or less of whole air amount to prevent dew dripping 4 3 Interlocking operation method with duct fan Booster fan Whenever the indoor unit ...

Страница 11: ...or with the vinyl tape Vane motor Horizontal vane Connector Unlocking button Vane motor 3 Set a vertical vane of the air outlet which tries to fixed by the hand slowly within the range in the table below Measured standard position of the grille Horizontal vane Standard of horizontal position Dimension A mm 21 25 28 30 Level 30 Min Downward 45 Downward 55 Downward 70 Max w Dimension between 21 mm a...

Страница 12: ...n pipe VP 25 connection O D 32 Drain hole 55 35 35 55 Auto vane Grille Air intake hole Air outlet hole 301 Detail drawing of fresh air intake Ceiling surface Cut out hole Burring hole 118 25 377 377 650 Suspension bolt M10 or W3 8 182 48 Terminal block 235 208 27 5 193 20 93 66 121 87 31 15 37 570 335 199 352 335 570 Grille Drain pipe VP 25 connection Drain hole 55 35 35 55 Auto vane Grille Air in...

Страница 13: ... CODE SW4 SW3 SW2 0 15T 25 5 4T 0 15T 25 5 4T DP DRAIN PUMP DS DRAIN SENSOR H2 DEW PREVENTION HEATER FAN MOTOR LL DRAIN PUMP DEW PREVENTION HEATER X1 AUX RELAY SYMBOL NAME VARISTOR INDOOR POWER BOARD P B ZNR X4 I B CN41 CN51 CN52 FUSE FUSE 6 3A 250V REMOTE INDICATION CENTRALLY CONTROL HA TERMINAL A CONNECTOR INDOOR CONTROLLER BOARD LEGEND NAME SYMBOL PIPE TEMPERATURE DETECTION GAS TH23 TRANSMISSIO...

Страница 14: ...nger Thermistor Room temparature detection TH21 Thermistor Pipe temperature detection Gas TH23 Thermistor Pipe temperature detection Liquid TH22 Linear expansion valve Gas pipe Liquid pipe Flare connection Gas pipe Liquid pipe 12 7 1 2 6 35 1 4 PLFY P20VCM E TH PLFY P25VCM E TH PLFY P32VCM E TH PLFY P40VCM E TH ...

Страница 15: ...the 3 screws of fan guard Air intake grille knob 3 Removing the panel 1 Remove the air intake grille Refer to 1 Corner panel See figure 2 1 Remove the screw of the corner 2 Slide the corner panel to the direction of the arrow 3 and remove the corner panel Panel See photo 2 1 Disconnect the connector that connects with the unit 2 Remove the 2 screws from the panel and loose another 2 screws which f...

Страница 16: ...om the indoor controller board 6 Remove the 3 screws fixed to the piping cover and remove the piping cover See photo 9 7 Remove the 6 screws fixed to the flat plate and remove the flat plate 8 Disconnect the lead wires to the direction of the fan motor and remove the 3 nuts of the fan motor Photo 5 6 Remove the drain pan 1 Remove the panel Refer to 3 2 Remove the room temperature detection and the...

Страница 17: ...screws See photo 9 from the heat exchanger and remove the heat exchanger 9 Removing the drain pump DP and drain sensor DS 1 Remove the panel Refer to 3 2 Remove the drain pan Refer to 6 3 Remove the 2 screws fixed to the control box cover and remove the control box cover 4 Remove the connectors of the CNP and the CN31 from the indoor controller board 5 Remove the 1 screw fixed to the cover and rem...

Страница 18: ...TH21 Room temperature detection Thermistor TH22 Pipe temperature detection Liqid Thermistor TH23 Pipe temperature detection Gas 1 2 Yellow Relay connector Yellow 1 2 3 Normal 4 3k 9 6k Abnormal Open or short Abnormal Open or short Normal 0 6k 6 0k Abnormal Open or short Normal 150k i10 White Red Yellow Brown Orange Red Blue Brown Normal Connector Abnormal 300 Open or short Normal Abnormal 290 Open...

Страница 19: ...een the indoor controller board and the linear expansion valve 1 273 t 1 273 Note Since the number of the connector at the controller board side and the relay connector are different follow the color of the lead wire 20 0 20 40 60 80 Thermistor for drain sensor Temperature 0 1 2 3 4 5 6 7 8 9 10 Resistance K Linear expansion valve Thermistor characteristic graph Thermistor TH21 Room temperature de...

Страница 20: ...s not light while the signals are output or keeps lighting even after the signals stop Countermeasures Exchange the indoor con troller board at drive circuit failure Linear expansion valve mechanism is locked Valve doesn t close completely Wrong connection of the connector or contact failure To check the linear expansion valve operate the indoor unit in fan mode and at the same time operate other ...

Страница 21: ... pump Cooling only Louver Vane Vane swing function Vane horizontal angle Vane cooling limit angle setting w4 Heat 4degrees up Superheat setting temperature w5 Sub cool setting temperature Heat pump Not available Not available Not available First setting Down B C Not effective Effective 6 2 degrees 10degrees 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 SW2 Capacity code setting 1 6 1 5 SW3 Function se...

Страница 22: ...ng SW12 2nd digit address setting Pole Operation by switch Address setting should be done when M NET Remote controller is being used This is the switch to be used when the indoor unit is operated with R2 series outdoor unit as a set Remarks Address can be set while the unit is stopped At delivery SW12 10 SW11 1 SW12 SW11 SW14 SW14 At delivery Effective timing Before power supply ON Indoor controll...

Страница 23: ... 5 13 7V DC Pin1 1 CN2M Connect to the terminal block TB5 M NET transmission connecting wire 24 30V DC non polar CN3A Connect to the terminal block TB15 MA Remote controller connecting wire Between 1 1 to 3 3 8 7 13V DC Pin1 1 CN29 Pipe temperature detection Gas TH23 CN21 Pipe temperature detection Liquid TH22 LED2 Power supply for MA Remote controller SW4 Model selection CN60 Linear expansion val...

Страница 24: ...LFY P20VCM E TH PLFY P25VCM E TH PLFY P32VCM E TH PLFY P40VCM E TH CNSK Connect to the indoor controller board CNDK Between 1 1 to 3 3 220 240V AC CN2S Connect to the indoor power board CN2D Between 1 1 to 3 3 12 6 13 7V DC Pin1 1 ...

Страница 25: ...0 E07 103 303 E07 103 044 E07 103 031 E07 103 032 AIR OUTLET GRILLE AUTO VANE CORNER PANEL AIR FILTER INTAKE GRILLE VANE MOTOR VANE BUSH GEAR V GEAR M REMOTE CONTROLLER PAR 20MAA Parts name SLP 2AA Q ty set PANEL PARTS SLP 2AA 1 10 PAR 20MAA ON OFF CENTRALLY CONTROLLED ERROR CODE CLOCK ON OFF C CHECK CHECK MODE FILTER TEST RUN FUNCTION C 1Hr NOT AVAILABLE STAND BY DEFROST FILTER CHECK TEST TEMP TI...

Страница 26: ...M E TH PLFY P32VCM E TH PLFY P40VCM E TH 1 2 3 4 5 6 8 9 10 11 13 7 15 18 21 22 16 12 3 23 21 20 17 14 24 25 19 DRAIN SENSOR SENSOR HOLDER TH23 PIPE TEMPERA TURE DETECTION GAS PIPE TEMPERA TURE DETECTION LIQUID SPL WASHER ROOM TEMPERA TURE DETECTION ...

Страница 27: ...SE DRUM 1 LEG 1 DRUM 2 INDOOR HEAT EXCHANGER INDOOR HEAT EXCHANGER LINEAR EXPANSION VALVE MOTOR MOUNT INDOOR FAN MOTOR INDOOR FAN MOTOR INDOOR FAN MOTOR INDOOR FAN MOTOR FLAT PLATE TURBO FAN SPL WASHER DRAIN PAN RO0M TEMPERATURE DETECTION FAN GUARD DRAIN PLUG COIL SUPPORT PIPETEMPERATUREDETECTION LIQUID PIPE TEMPERATURE DETECTION GAS SENSOR HOLDER TH23 DRAIN HOSE DRAIN SENSOR SENSOR HOLDER DRAIN P...

Страница 28: ...BOARD INDOOR CONTROLLER BOARD INDOOR CONTROLLER BOARD INDOOR CONTROLLER BOARD VARISTOR FUSE TERMINAL BLOCK TERMINAL BLOCK TERMINAL BLOCK INDOOR POWER BOARD C1 C1 I B I B I B I B ZNR FUSE TB2 TB5 TB15 P B 3P 3P 2P 1 0 440VAC 1 5 440VAC 250V 6 3A PLFY Q ty set P20 P25 P32 P40 VCM E TH 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3 5 8 1 2 4 6 7 cCopyright 2004 MITSUBISHI ELECTRIC ...

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