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SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
Series PLFY
Indoor unit
[Model names]
PLFY-P32VKM-A
PLFY-P40VKM-A
PLFY-P50VKM-A
PLFY-P63VKM-A
INDOOR UNIT
Ceiling Cassettes
[Service Ref.]
PLFY-P32VKM-A
PLFY-P40VKM-A
PLFY-P50VKM-A
PLFY-P63VKM-A
R407C
R22
CONTENTS
1. SAFETY PRECAUTION···························3
2. PART NAMES AND FUNCTIONS ···········5
3. SPECIFICATION ······································7
4. OUTLINES AND DIMENSIONS···············9
5. WIRING DIAGRAM ································10
6. REFRIGERANT SYSTEM DIAGRAM·······11
7. TROUBLE SHOOTING ··························12
8. DISASSEMBLY PROCEDURE ··············17
9. PARTS LIST···········································20
10. OPTIONAL PARTS ·················Back cover
2001
No. OC253
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Table of Contents
Related Manuals for Mitsubishi Electric PLFY-P32VKM-A
Summary of Contents for Mitsubishi Electric PLFY-P32VKM-A
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Page 1: Table Of Contents
2001 SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS No. OC253 TECHNICAL & SERVICE MANUAL Ceiling Cassettes Series PLFY R407C Indoor unit [Model names] [Service Ref.] PLFY-P32VKM-A PLFY-P32VKM-A PLFY-P40VKM-A PLFY-P40VKM-A PLFY-P50VKM-A PLFY-P50VKM-A PLFY-P63VKM-A PLFY-P63VKM-A CONTENTS 1. SAFETY PRECAUTION···························3 2. PART NAMES AND FUNCTIONS ···········5 3. -
Page 3: Safety Precaution
SAFETY PRECAUTION Cautions for using with the outdoor unit which adopts R407C refrigerant. · Do not use the existing refrigerant piping. -The old refrigerant and lubricant in the existing piping contains a large amount of chlorine which may cause the lubricant deterioration of the new unit. - Page 4 [1] Service tools Use the below service tools as exclusive tools for R407C refrigerant. Tool name Specifications Gauge manifold ·Only for R407C. ·Use the existing fitting SPECIFICATIONS. (UNF7/16) ·Use high-tension side pressure of 3.43MPa·G or over. Charge hose ·Only for R407C. ·Use pressure performance of 5.10MPa·G or over.
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Page 5: Part Names And Functions
PART NAMES AND FUNCTIONS Indoor (Main) Unit Filters Remove dust and pollutants from return air Horizontal Air Outlet Sets airflow horizontal automatically during cooling or dehumidifying. Grille Auto Air Swing Vane Disperses airflow up and down and adjusts the angle of airflow direction. -
Page 6: Operation Lamp
Display In this display example on the bot- CENTRALLY CLOCK display tom left, a condition where all dis- CONTROLLED display play lamps light is shown for expla- The current time , start time and stop time can be displayed in ten second nation purposes although this differs This indicates when the unit is con- intervals by pressing the time switch... -
Page 7: Specification
SPECIFICATION 3-1. Specification Item PLFY-P32VKM-A PLFY-P40VKM-A PLFY-P50VKM-A PLFY-P63VKM-A Single phase 220-230-240V 50Hz · Power Single phase 220V 60Hz Cooling capacity Heating capacity Cooling 0.13 0.13 0.14 0.15 Input Heating 0.13 0.13 0.14 0.15 Cooling 0.60 0.60 0.64 0.68 Current Heating 0.60... - Page 8 3-2. Electrical parts specifications Model PLFY-P32VKM-A PLFY-P40VKM-A PLFY-P50VKM-A PLFY-P63VKM-A Symbol Parts name Room temperature TH21 Resistance 0:/15k , 10:/9.6k', 20:/6.3k', 25:/5.2k', 30:/4.3k', 40:/3.0k thermistor Liquid pipe thermistor TH22 Resistance 0:/15k , 10:/9.6k', 20:/6.3k', 25:/5.2k', 30:/4.3k', 40:/3.0k Gas pipe thermistor TH23 Resistance 0:/15k , 10:/9.6k', 20:/6.3k', 25:/5.2k', 30:/4.3k', 40:/3.0k...
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Page 9: Outlines And Dimensions
OUTLINES AND DIMENSIONS PLFY-P32VKM-A Unit : mm PLFY-P40VKM-A PLFY-P50VKM-A PLFY-P63VKM-A... -
Page 10: Wiring Diagram
WIRING DIAGRAM PLFY-P32VKM-A, PLFY-P40VKM-A PLFY-P50VKM-A, PLFY-P63VKM-A... -
Page 11: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM PLFY-P32VKM-A PLFY-P40VKM-A PLFY-P50VKM-A PLFY-P63VKM-A Strainer (#50mesh) Gas pipe thermistor TH23 Gas pipe Liquid pipe thermistor TH22 Flare connection Heat exchanger Linear expansion valve Strainer (#100mesh) Strainer (#100mesh) Room temparature thermistor TH21 Capacity PLFY-P32VKM-A PLFY-P50VKM-A Item PLFY-P63VKM-A PLFY-P40VKM-A Gas pipe {12.7(1/2’’) -
Page 12: Trouble Shooting
TROUBLE SHOOTING 7-1. How to check the parts PLFY-P•VKM-A Parts name Check points Room temperature Disconnect the connector, then measure the resistance using a tester. thermistor (TH21) (Surrounding temperature 10°C~30°C) Liquid pipe thermistor (TH22) Normal Abnormal Gas pipe thermistor (Refer to the next page for a detail.) (TH23) 4.3k ~9.6k... -
Page 13: Linear Expansion Valve
<Thermistor characteristic graph> Room temperature thermistor(TH21) < Thermistor for lower temperature > Thermistor for Liquid pipe temperature thermistor(TH22) lower temperature Gas pipe temperature thermistor(TH23) Thermistor R =15k' ± 3% Fixed number of B=3480k' ± 2% Rt=15exp { 3480( 273+t 15k' 9.6k' 6.3k' 5.2k'... - Page 14 <Output pulse signal and the valve operation> Output Output (Phase) Closing a valve : 1 Opening a valve : 4 The output pulse shifts in above order. 1. When linear expansion valve operation stops, all output phase become OFF. 2. At phase interruption or when phase does not shift in order, motor does not rotate smoothly and motor will locks and vibrates.
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Page 15: Function Of Dip Switch
Heat pump / Cooling only Cooling only Heat pump Set while the unit is off. Louver Available Not available <At delivery> PLFY-P32VKM-A Vane Available Not available PLFY-P40VKM-A Vane swing function Available Not available 1 2 3 4 5 6 7 8 9 10... - Page 16 Switch Pole Operation by switch Remarks Address board Ceiling height can be changed depends on SWB setting. (High ceiling) <At delivery> Ceiling (Standard) height selector (Silent) High Silent Standard ceiling Address board 4 direction 2.7m 2.7m 3.0m 3 direction 2.4m 3.0m 3.3m (Not used)
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Page 17: Disassembly Procedure
DISASSEMBLY PROCEDURE INDOOR UNIT Be careful on removing heavy parts. PLFY-P63VKM-A OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS Shaft 1. Removing the air intake grille Figure 1 PUSH (1) Press the button. (2) Open the intake grille 90°. (3) Remove the chip. (4) Slide the shaft in the hinge to the left and remove the intake grille. - Page 18 OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS 5. Removing the room temperature thermistor Photo 5 (1) Remove the fan guard. Indoor controller board (2) Remove the electrical box cover (3) Remove the holder and the room temperature thermistor by pulling the catch. (4) Disconnect the red connector, CN20, on the indoor con- Room troller board.
- Page 19 OPERATING PROCEDURE PHOTOS&ILLUSTRATIONS 9. Removing the drain pump and drain sensor Photo 9 Drain hose Drain sensor holder (1) Remove the panel. (2) Remove the fan guard. (3) Remove the electrical parts cover. (4) Remove the electrical parts box. (5) Remove the drain pan. (6) Remove 4 screws of the drain pump.
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Page 20: Parts List
PARTS LIST PANEL PARTS PLFY-P32VKM-A PLFY-P40VKM-A PLFY-P50VKM-A PLFY-P63VKM-A CENTRALLY CONTROLLED 1Hr. ON OFF ˚C CHECK CLOCK FILTER CHECK MODE ˚C TEST RUN STAND BY ERROR CODE NOT AVAILABLE FUNCTION DEFROST TEMP. ON/OFF FILTER CHECK TEST PAR-20MAA TIMER SET Q'ty/set Price... - Page 21 PANEL PARTS PLFY-P32VKM-A PLFY-P40VKM-A PLFY-P50VKM-A PLFY-P63VKM-A Part number that is circled is not shown in the figure. Q'ty/set Price Wiring Recom- Remarks PLFY-P32/P40 Diagram mended Part No. Part Name Specification /P50/P63 (Drawing No.) Unit Amount Symbol Q'ty VKM-A R01 29H 002...
- Page 22 FUNCTIONAL PARTS PLFY-P32VKM-A PLFY-P40VKM-A PLFY-P50VKM-A PLFY-P63VKM-A...
- Page 23 Part numbers that are circled are not shown in the figure. Q'ty/set Price Wiring Recom- Remarks Diagram mended PLFY- · VKM-A Part No. Part Name Specification (Drawing No.) Unit Amount Symbol Q'ty P32 P40 P50 P63 R01 29H 105 MOTOR MOUNT T7W E00 762 FAN MOTOR PAI-V30F...
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Page 24: Optional Parts
Part No. PAC-SE01AS-E HEAD OFFICE : MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU TOKYO 100-8310, JAPAN cCopyright 2001 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. New publication, effective Feb. 2001 Distributed in Feb. 2001. No. OC253 PDF 585 Specifications subject to change without notice...