Mitsubishi Electric PKFY-P20VAM Technical & Service Manual Download Page 22

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Issued in Jun. 1998. No. OC163 564
Printed in Japan

HEAD OFFICE MISTUBISHI DENKI BLDG.MARUNOUCHI TOKYO100 TELEX J24532 CABLE MELCO TOKYO

New publication, effective Jun. 1998
Specifications subject to change without notice

Summary of Contents for PKFY-P20VAM

Page 1: ...N 3 3 PART NAMES AND FUNCTIONS 4 4 SPECIFICATION 6 5 OUTLINES AND DIMENSIONS 8 6 WIRING DIAGRAM 9 7 REFRIGERANT SYSTEM DIAGRAM 10 8 TROUBLESHOOTING 11 9 DISASSEMBLY PROCEDURE 16 10 PARTS LIST 19 Indoor unit PKFY P20VAM PKFY P25VAM No OC163 1998 Models Wall Mounted Series PKFY INDOOR UNIT MODEL NAME R407C ...

Page 2: ...r installation all the screws required for securing the indoor unit to the wall are accessible from the front of the unit 5 5 way piping provides more flexibility in selecting installation sites All piping including drainage can be conned from the rear right base left and left rear of the unit providing much greater flexibility in laying out piping and selecting installation sites Indoor unit Wall...

Page 3: ...e 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 refrigerator oil to deteriorate Use a vacuum pump with a reverse flow check valve Evacuate sufficiently for one hour leave it put ...

Page 4: ...MENT button This sets the room temperature The temperature setting can be performed in 1 C units Setting range Cooler 19 C to 30 C Heater 17 C to 28 C CHECK TEST RUN button Only press this button to perform an inspection check or test operation Do not use it for nomal operation FILTER button This resets the filter service indication display AIR DIRECTION button This adjusts the vertical angle of t...

Page 5: ... heating air is discharged DEFROST display This indicates when the defrost operation is performed CHECK display This indicates when a malfunction has occurred in the unit which should be checked CLOCK display The current time start time and stop time can be displayed in tensecond intervals by pressing the time switch button The start time or stop time is always displayed during the timer operation...

Page 6: ...ing Heating Height Width Depth Gas side Liquid side PKFY P20VAM 2 000 2 250 PKFY P25VAM 2 500 2 800 Single phase 220V 240V 50Hz 0 04 0 04 0 20 0 20 Plastic munsell 2 60Y 8 66 0 69 295 815 158 Cross fin Lineflow fan 1 5 9 5 6 5 2 4 9 0 0 017 Polyethylene sheet PP honey comb 12 7 1 2F 6 35 1 4F Outer dimeter 28 Outer diameter of the connection 36 35 33 32 8 5 Electric characteristic Note 1 Rating co...

Page 7: ...ply terminal block Transmission terminal block Symbol T TH21 TH22 TH23 FUSE MF C1 MV LEV TB2 TB5 Primary 50 60Hz 220 240V Secondry 18 4V 1 2A Resistance 0 C 15k1 10 C 9 6k1 20 C 6 3k1 25 C 5 4k1 30 C 4 3k1 40 C 3 0k1 Resistance 0 C 15k1 10 C 9 6k1 20 C 6 3k1 25 C 5 4k1 30 C 4 3k1 40 C 3 0k1 250V 6 3A 4 Pole Output 17W RC4V17 1 5 F 440V MSFBC20A76 DC12V DC12V Stepping motor drive Port 3 2 0 2000pul...

Page 8: ...et dimention Air outlet direction Detail of address board Dip swich Terminal block Terminal block for power supply Knock out hole for right hand side piping Knock out hole for left hand side piping Knock out hole for under piping Liquid pipe 815 630 695 660 450 520 54 50 16 45 91 5 10 34 2 5 2 5 16 4 50 10 45 5 4 5 3 R 1 5 R 1 5 R15 R12 R8 R8 R 8 10 24 4 116 110 60 146 295 21 5 247 5 150 158 70 3 ...

Page 9: ...WHT REMOTE INDICATION CONNECTION NO 1ST DIGIT 2ND DIGIT 3RD DIGIT ADDRESS RED F C ZNR 3 1 P B See fig 1 BLU YEL ORN PNK WHT YEL MF 5 TH21 TH23 TH22 LEV ORN BLU RED RED BRN MV LED5 0 A B SW14 SW11 SW12 SW1 10 9 8 7 6 5 4 3 2 1 OFF ON 1 1 8 RED ADDRESS CN43 CN82 4 4 8 6 3A 250V FUSE AC18 4V T C1 CND RED GRN FAN1 1 2 1 4 6 1 2 BLU M NET CN2M 1 2 LIQUID CN21 CN53 P MICON BOARD CN35 P 1 5 M B POWER BOA...

Page 10: ...anger Room temperature thermistor TH21 Gas pipe thermistor TH23 Liquid pipe thermistor TH22 Gas pipe Flare Linear expansion valve Gas pipe PKFY P20VAM PKFY P25VAM 12 7 1 2F Liquid pipe 6 35 1 4F Models Item Refrigeration pipe size Flare connection size PKFY P20VAM PKFY P25VAM ...

Page 11: ...GND and yellow wire VCC Slowly start running the fan It is normal if while the fan rotate once the electrical pressure change from 0V to12V then go back to 0V If the electrical pressure stay at around 0V or 10V it means the fan motor has the defects 200 Normal 1 5 White Red 150 10 Abnormal Open or short 2 6 Yellow Brown 3 5 Orange Red 4 6 Blue Brown Normal 1 2 Red Pink 400 7 Abnormal Open or short...

Page 12: ...stor R0 15k 3 Fixed number of B 3480k 2 Rt 15exp 3480 0 15k 10 9 6k 20 6 3k 25 5 2k 30 4 3k 40 3 0k Thermistor for lower temperature Linear expansion valve Operation summary of the linear expansion valve Linear expansion valve open close through stepping motor after receiving the pulse signal from the indoor controller board Valve position can be changed in proportion to the number of pulse signal...

Page 13: ...t closed all the way It is not necessary to exchange the linear expansion valve if the leakage is small and not making any trouble Thermistor Linear expansion valve Motor will idle and make ticking noise when motor is operated while the linear expansion valve is locked This ticking sound is the sign of the abnormality Check the color of lead wire and missing terminal of the connector Exchange the ...

Page 14: ...t setting Vane cooling limit angle setting Note 1 Down A B C Down A B C Effective Not effective Heater 4deg up Not effective Effective Target Superheat setting temperature 9deg 6deg Target Sybcool setting temperature 15deg 10deg ON OFF 1 2 3 4 5 6 7 8 9 10 ON OFF 1 2 3 4 5 6 7 8 9 10 ON OFF 1 2 3 4 ON OFF 1 2 3 4 PKFY P20VAM MODEL SW2 PKFY P25VAM Address board At delivery Indoor controller board I...

Page 15: ...st digit address setting Rotary switch SW14 Connector No Setting SW5 Voltage selection Rotary switch Address setting should be done when network remote controller PAR F25MA is being used This is the switch to be used when the indoor unit is operated with R2 R3 series outdoor unit as a set If the unit is used at the 230V or 240V area set the voltage to 240V If the unit is used at the 220V set the v...

Page 16: ...le 1 2 Push Down Be careful not to damage the airflow adjustment plate with the screw driver PKFY P25VAM Be careful on removing heavy parts Figure 1 Figure 2 2 REMOVING THE FRONT PANEL Before removing the front panel leave the open space at upper side of air flow adjustment plate approximately 2 to 3 cm 1 Remove the screw caps then remove the set screws Refer to the photo 1 2 Remove the left side ...

Page 17: ... 3 Photo 2 Electrical parts box cover Screw caps Electrical parts box Photo 3 Indoor micro controller board Indoor power board Indoor power board 4 REMOVING THE ELECTRICAL PARTS BOX 1 Remove the front panel Refer to 2 2 Remove the electrical parts box cover 3 Pull the nozzle assemble toward you as opening the catch of the nozzle assemble 4 Disconnect the indoor outdoor connector 5 Disconnect the f...

Page 18: ...e photo 6 7 Pull the left hand side of the heat exchanger toward you See the photo 7 8 Remove the lineflow fan Photo 6 Heat exchanger Fan motor Photo 7 Heat exchanger 7 REMOVING THE VANE MOTOR 1 Remove the front panel 2 Remove the screw of the electrical parts box cover and remove the cover 3 Remove the screw of the vane motor and remove the motor from the shaft 4 Disconnect the vane motor connect...

Page 19: ...BACK PLATE SCREW CAP GRILLE CATCH BRAND LABEL No Parts No Parts Name Specifications PKFY P20VAM PKFY P25VAM Remarks Drawing No Wiring Diagram Symbol Recom mended Q ty Unit Amount Q ty set Price 1 1 1 1 1 1 1 1 1 1 DT25C174H03 3PCS SET BC79R798H02 R01 22A 651 R01 22A 691 R01 22A 500 R01 22A 635 T7W A00 658 R01 22A 808 R01 22A 096 R01 22A 054 ...

Page 20: ...P M1 M2 3P L N 250V 6 3A PAR F25MA 10m No Parts No Parts Name Specifications PKFY P25VAM PKFY P20VAM Remarks Drawing No Wiring Diagram Symbol Recom mended Q ty Unit Amount Q ty set Price MF M B P B TB2 TB5 TH21 TH22 MV FUSE A B TH23 R B 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 BG00N801B33 BG00N801B34 BG00G828G04 R01 22A 530 R01 22A 002 R01 22A...

Page 21: ... HEAT EXCHANGER HEAT EXCHANGER CONNECT PIPE LINEAR EXPANSION VALVE No Parts No Parts Name Specifications PKFY P20VAM PKFY P25VAM Remarks Drawing No Wiring Diagram Symbol Recom mended Q ty Unit Amount Q ty set Price LEV R01 99W 480 R01 00Y 480 R01 99W 470 R01 22A 401 ...

Page 22: ... ENGINEERING CO LTD Issued in Jun 1998 No OC163 564 Printed in Japan HEAD OFFICE MISTUBISHI DENKI BLDG MARUNOUCHI TOKYO100 TELEX J24532 CABLE MELCO TOKYO New publication effective Jun 1998 Specifications subject to change without notice ...

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