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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
Series PKFY
<Indoor unit>
[Model names]
PKFY-P32VGM-A
PKFY-P40VGM-A
PKFY-P50VGM-A
Indoor unit
[Service Ref.]
PKFY-P32VGM-A
PKFY-P40VGM-A
PKFY-P50VGM-A
R407C / R22
Revision:
• The indicated No. of CORNER
COVER (page 19) in the illus-
tration has been corrected in
REVISED EDITION-A.
• Some descriptions have been
• Please void OC250.
Note:
• RoHS compliant products
• For servicing of RoHS com-
CONTENTS
1. SAFETY PRECAUTION ............................ 2
2. PART NAMES AND FUNCTIONS ............. 4
3. SPECIFICATIONS ..................................... 6
4. OUTLINES AND DIMENSIONS ................ 8
5. WIRING DIAGRAM .................................... 9
6. REFRIGERANT SYSTEM DIAGRAM ..... 10
7. TROUBLE SHOOTING ............................ 11
8. DISASSEMBLY PROCEDURE ................ 16
9. RoHS PARTS LIST .................................. 19
March 2013
No. OC250
REVISED EDITION-A
modified.
have <G> mark on the spec
name plate.
pliant products, refer to the
RoHS Parts List.
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Table of Contents
Related Manuals for Mitsubishi PKFY-P32VGM-A
Summary of Contents for Mitsubishi PKFY-P32VGM-A
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Page 1: Table Of Contents
R407C / R22 Series PKFY <Indoor unit> Revision: [Service Ref.] [Model names] • The indicated No. of CORNER COVER (page 19) in the illus- PKFY-P32VGM-A PKFY-P32VGM-A tration has been corrected in REVISED EDITION-A. • Some descriptions have been PKFY-P40VGM-A PKFY-P40VGM-A modified. -
Page 2: Safety Precaution
SAFETY PRECAUTION CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R407C Do not use the existing refrigerant piping. Use liquid refrigerant to charge the system. The old refrigerant and lubricant in the existing piping If gas refrigerant is used to seal the system, the composition contain a large amount of chlorine which may cause the of the refrigerant in the cylinder will change and performance lubricant deterioration of the new unit. - Page 3 [1] Service tools Use the below service tools as exclusive tools for R407C refrigerant. Tool name Specifications · Only for R407C · Use the existing fitting specifications . (UNF7/16) Gauge manifold · Use high-tension side pressure of 3.43 MPa·G or over. ·...
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Page 4: Part Names And Functions
PART NAMES AND FUNCTIONS ● Indoor Unit PKFY-P32VGM-A Filter Air intake grille PKFY-P40VGM-A PKFY-P50VGM-A Air intake Auto vane Guide vane Air outlet ● Remote controller [PAR-20MAA] ● Once the controls are set, the same operation mode can be repeated by simply pressing the on / off button. - Page 5 ● Display In this display example on the bot- CENTRALLY CLOCK display tom left, a condition where all display CONTROLLED display lamps light is shown for explanation The current time , start time and stop purposes although this differs from time can be displayed in ten second This indicates when the unit is con- intervals by pressing the time switch...
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Page 6: Specifications
SPECIFICATIONS 3-1. SPECIFICATION Item PKFY-P40VGM-A PKFY-P50VGM-A PKFY-P32VGM-A V•Hz Power Single phase 220V-230V-240V · 50Hz / 220V · 60Hz Cooling capacity Heating capacity Cooling 0.07 Input Heating 0.07 Cooling 0.32 Current Heating 0.32 Exterior — Plastic , white : <0.70Y 8.59/0.97>... - Page 7 3-2. ELECTRICAL PARTS SPECIFICATIONS Model PKFY-P50VGM-A Symbol PKFY-P40VGM-A PKFY-P32VGM-A Parts name Room temperature thermistor TH21 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.2kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ Liquid pipe temperature thermistor TH22 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.2kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ Gas pipe temperature thermistor TH23 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.2kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ...
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Page 8: Outlines And Dimensions
OUTLINES AND DIMENSIONS Unit : mm PKFY-P32VGM-A PKFY-P40VGM-A PKFY-P50VGM-A Air intake 30 or more 180 or more OC250A... -
Page 9: Wiring Diagram
WIRING DIAGRAM PKFY-P32VGM-A , PKFY-P40VGM-A , PKFY-P50VGM-A Symbol Name Symbol Name Symbol Name Indoor controller board Capacitor(fan motor) Circuit board (Address) Connector Remote switch Linear expansion valve Switch Mode selection CN32 HA terminal-A CN41 Fan motor(with inner thermo) Voltage selection... -
Page 10: Refrigerant System Diagram
Gas pipe Liquid pipe temperature thermistor TH22 Flare connection Liquid pipe Heat exchanger Linear expansion valve Strainer (#100mesh) Strainer (#100mesh) Room temperature thermistor TH21 Capacity PKFY-P32VGM-A, PKFY-P40VGM-A PKFY-P50VGM-A Item [15.88(5/8”) {12.7 (1/2”) Gas pipe [9.52(3/8”) {6.35 (1/4”) Liquid pipe OC250A... -
Page 11: Trouble Shooting
TROUBLE SHOOTING 7-1. HOW TO CHECK THE PARTS PKFY-P32VGM-A , PKFY-P40VGM-A, PKFY-P50VGM-A Parts name Check method Room temperature Disconnect the connector then measure the resistance with a tester. thermistor (TH21) (Surrounding temperature 10°C~30°C) Liquid pipe temperature Normal Abnormal thermistor (TH22) (Refer to the next page for a detail.) - Page 12 <Thermistor Characteristic graph> < Thermistor for lower temperature > Room temperature thermistor(TH21) Thermistor for Liquid pipe temperature thermistor (TH22) lower temperature Gas pipe temperature thermistor (TH23) Thermistor R =15k' ± 3% Fixed number of B=3480 ± 2% Rt=15exp { 3480( 273+t 15k' 9.6k'...
- Page 13 <Output pulse signal and the valve operation> Output Output Closing a valve : 1 → 2 → 3 → 4 → 1 (Phase) Opening a valve : 4 → 3 → 2 → 1 → 4 The output pulse shifts in above order. * 1.
- Page 14 7-2. FUNCTION OF DIPSWITCH PKFY-P32VGM-A , PKFY-P40VGM-A , PKFY-P50VGM-A The black square ( ) indicates a switch position. Operation by switch Switch Pole Function Remarks Thermistor<Intake temperature Indoor unit Built-in remote controller Address board detection>position Filter clogging detection Provided Not provided <Initial setting>...
- Page 15 The black square ( ) indicates a switch position. Switch Pole Operation by switch Remarks Address board SW11 1st digit Address can be set while the SW12 SW11 address unit is stopped. setting Address setting should be done when <Initial setting> SW12 M-NET remote controller is being used.
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Page 16: Disassembly Procedure
DISASSEMBLY PROCEDURE PKFY-P32/40/50VGM-A OPERATION PROCEDURE PHOTOS & ILLUSTRATION (Figure 1) Hook 1. REMOVING THE LOWER SIDE OF THE INDOOR UNIT FROM THE INSTALLATION PLATE (1) Remove the left / right corner box of the indoor unit. (2) Hold and pull down the lower and both ends of the indoor unit, and remove the ▼... - Page 17 OPERATION PROCEDURE PHOTOS & ILLUSTRATION (Photo 4) 4. REMOVING THE VANE MOTOR (1) Disconnect the connector CN6V on the indoor controller Nozzle Set screws board. assembly (2) Remove the 2 screws of the vane motor, disconnect the lead wire and remove the vane motor from the shaft. Lead wire Van motor 5.
- Page 18 OPERATION PROCEDURE PHOTOS & ILLUSTRATION (Photo 10) 9. REMOVING THE LINE FLOW FAN (1) Remove the terminal block cover. (2) Remove the front panel. (see Photo 1) Heat exchanger (3) Remove the electrical parts box. (see Photo 7) (4) Remove the nozzle assembly. (see Photo 6) (5) Remove the fan motor.
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Page 19: Rohs Parts List
RoHS PARTS LIST STRUCTURAL PARTS PKFY-P32VGM-A PKFY-P40VGM-A PKFY-P50VGM-A Recom- Wiring PKFY-P32VGM-A Remarks Parts Name Parts No. Specifications mended Diagram PKFY-P40VGM-A (Drawing No.) Symbol Q'ty PKFY-P50VGM-A R01 89Y 651 FRONT PANEL R01 08Y 092 VANE SLEEVE R01 08Y 691 FRONT GRILLE... - Page 20 — REMOTE CONTROLLER PAR-20MAA HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU TOKYO 100-8310, JAPAN cCopyright 2001 MITSUBISHI ELECTRIC CORPORATION Distributed in Mar. 2013 No.OC250 REVICED EDITION-A New publication, effective Mar. 2013 Distributed in Feb. 2001 No.OC250 PDF 810 Specifications are subject to change without notice.