Mitsubishi Electric PKFY-P20VAM-E Technical & Service Manual
  1. Manuals
  2. Brands
  3. Mitsubishi Electric Manuals
  4. Air Conditioner
  5. PKFY-P20VAM-E
  6. Technical & service manual

Mitsubishi Electric PKFY-P20VAM-E Technical & Service Manual

Wall mounted
Hide thumbs Also See for PKFY-P20VAM-E:
Table of Contents

Advertisement

Quick Links

See also: Technical & Service Manual
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
Wall Mounted
Series PKFY
Indoor unit
[Model names]
PKFY-P20VAM-E
PKFY-P25VAM-E
INDOOR UNIT
R410A
[Service Ref.]
PKFY-P20VAM-E
PKFY-P25VAM-E
2004
R407C
R22
CONTENTS
1. SAFETY PRECAUTION ·····················2
3. SPECIFICATION·································8
5. WIRING DIAGRAM···························11
7. TROUBLESHOOTING······················12
8. DISASSEMBLY PROCEDURE·········19
9. PARTS LIST ·····································22
No. OC309

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the PKFY-P20VAM-E and is the answer not in the manual?

Questions and answers

Related Manuals for Mitsubishi Electric PKFY-P20VAM-E

Summary of Contents for Mitsubishi Electric PKFY-P20VAM-E

  • Page 1: Table Of Contents

    No. OC309 TECHNICAL & SERVICE MANUAL Wall Mounted Series PKFY R410A R407C Indoor unit [Model names] [Service Ref.] PKFY-P20VAM-E PKFY-P20VAM-E PKFY-P25VAM-E PKFY-P25VAM-E CONTENTS 1. SAFETY PRECAUTION ·····················2 2. PART NAMES AND FUNCTIONS······6 3. SPECIFICATION·································8 4. OUTLINES AND DIMENSIONS ·······10 5. WIRING DIAGRAM···························11 INDOOR UNIT 6.

  • 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 seal the system. The old refrigerant and lubricant in the existing piping If gas refrigerant is used to seal the system, the composition contains 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 [3] 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.
  • Page 4 Cautions for units utilizing refrigerant R410A Use a vacuum pump with a reverse flow check Do not use the existing refrigerant piping. valve. The old refrigerant and lubricant in the existing piping Vacuum pump oil may flow back into refrigerant cycle and contains a large amount of chlorine which may cause the that can cause deterioration of refrigerant oil etc.
  • Page 5 [1] Cautions for service (1) Perform service after collecting the refrigerant left in unit completely. (2) Do not release refrigerant in the air. (3) After completing service, charge the cycle with specified amount of refrigerant. (4) When performing service, install a filter drier simultaneously. Be sure to use a filter drier for new refrigerant.

  • Page 6: Part Names And Functions

    PART NAMES AND FUNCTIONS Indoor Unit PKFY-P20VAM-E PKFY-P25VAM-E Air intake Air intake grille Filter Auto Vane Guide vane Air Outlet MA remote controller [PAR-20MAA] Once the operation of the unit is set, subsequent operations can only be performed by pressing the ON/OFF button repeatedly.
  • Page 7 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 8: Specification

    SPECIFICATION 3-1. Specification Item Unit PKFY-P20VAM-E PKFY-P25VAM-E Single phase, 220-230-240V, 50Hz [,V,Hz Power Single phase, 220V, 60Hz Cooling capacity Heating capacity Cooling 0.04 Power Supply Heating 0.04 Cooling 0.20 Starting Current Heating 0.20 Exterior <munsell symbol> — Plastic munsell : <2.60Y 8.66/0.69>...
  • Page 9 3-2. Electrical parts specifications Model Symbol PKFY-P20VAM-E PKFY-P25VAM-E Parts name Room temperature TH21 Resistance 0:/15k", 10:/9.6k", 20:/6.3k", 25:/5.4k", 30:/4.3k", 40:/3.0k" thermistor Liquid pipe thermistor TH22 Resistance 0:/15k", 10:/9.6k", 20:/6.3k", 25:/5.4k", 30:/4.3k", 40:/3.0k" Gas pipe thermistor TH23 Resistance 0:/15k", 10:/9.6k", 20:/6.3k", 25:/5.4k", 30:/4.3k", 40:/3.0k"...

  • Page 10: Outlines And Dimensions

    OUTLINES AND DIMENSIONS PKFY-P20VAM-E Unit : mm PKFY-P25VAM-E...

  • Page 11: Wiring Diagram

    WIRING DIAGRAM PKFY-P20VAM-E PKFY-P25VAM-E Legend Symbol Name Symbol Name Symbol Name Indoor controller board TH23 Thermistor Pipe temperature,detection/Gas Terminal Power supply CN32 Connector Remote switch (0:/15T,25:/5.4T) block Transmission CN41 HA terminal-A Indoor power board Circuit board Address board CN51 Centrally control Varistor SW1<A.B>...

  • Page 12: Refrigerant System Diagram

    Liquid pipe temperature thermistor TH22 Liquid pipe Heat exchanger Linear expansion valve Room temperature thermistor Strainer TH21 (#100mesh) Models PKFY-P20VAM-E PKFY-P25VAM-E Item Gas pipe {12.7 (1/2”) {6.35 (1/4”) Liquid pipe TROUBLESHOOTING 7-1. How to check PKFY-P20VAM-E PKFY-P25VAM-E Parts name Check points Room temperature Disconnect the connector then measure the resistance using a tester.
  • Page 13 <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=3480K ± 2% Rt=15exp { 3480( 273+t 15k' 9.6k' 6.3k' 5.4k'...
  • Page 14 <Output pulse signal and the valve operation> Output Output (Phase) Closing a valve : 1 Opening a valve : 4 The output pulse shift 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 lock, and vibrates.
  • Page 15 7-2. FUNCTION OF DIP SWITCH PKFY-P20VAM-E PKFY-P25VAM-E Operation by switch Switch Pole Function Remarks Thermistor<Intake temperature> Indoor unit Built-in remote controller Address board position Filter clogging Provide Not provide <At delivery> Filter sign indication 2,500 hr 100 hr 1 2 3 4 5 6 7 8 9 10...
  • Page 16 Switch Operation by switch Remarks Address board SW11 1st digit Address can be set while the address unit is stopped. SW12 SW11 setting Address setting should be done when M-NET <At delivery> SW12 remote controller is being used. SW12 SW11 2nd digit address setting...
  • Page 17 7-3. TEST POINT DIAGRAM 7-3-1. Indoor controller board PKFY-P20VAM-E PKFY-P25VAM-E CN29 Pipe temperature CN6V CN41 CN32 CN34 thermistor/Gas (TH23) Vane moter output Connector Connector Fan motor rotational (MV) (HA terminal-A) (Remote switch) frequency input (MF) CN21 CN60 Pipe temperature Linear expansion valve...
  • Page 18 7-3-2. Indoor power board PKFY-P20VAM-E PKFY-P25VAM-E Fan motor output (MF) Power supply for indoor controller board CN2M Between 1 1 to 3 3 220-240V AC Connect to the terminal block (TB5) (M-NET transmission connecting wire) 24-30V DC (non-polar) FUSE 6.3A 250V...

  • Page 19: Disassembly Procedure

    DISASSEMBLY PROCEDURE PKFY-P25VAM-E Be careful on removing heavy parts. OPERATION PROCEDURE PHOTOS & ILLUSTRATIONS 1. REMOVING THE LOWER SIDE OF THE INDOOR UNIT FROM Figure 1 Figure 2 THE INSTALLATION PLATE When there is removing plate (1) Remove the corner box at right lower side of the indoor unit.
  • Page 20 OPERATION PROCEDURE PHOTOS & ILLUSTRATIONS 3. REMOVING THE INDOOR MICRO CONTROLLER BOARD Electrical box cover Photo 2 AND INDOOR POWER BOARD (1) Remove the front panel. (Refer to 2) (2) Remove the electrical box cover (screw 4 10). (Refer to the photo 2) INDOOR MICRO CONTROLLER BOARD (1) Disconnect the following connectors on the indoor micro controller board.
  • Page 21 OPERATION PROCEDURE PHOTOS & ILLUSTRATIONS 5. REMOVING THE NOZZLE ASSEMBLY Photo 5 (1) Remove the front panel (Refer to 2). Heat exchanger Electrical box (2) Remove the electrical box cover. (3) Disconnect the connector (CN5V) on the indoor micro con Drain hose troller board.

  • Page 22: Parts List

    PKFY-P25VAM-E Part number that is circled is not shown in the figure. Q'ty / set Price Wiring Recom- Remarks No. Parts No. Parts Name Specifications PKFY-P20VAM-E Diagram mended Unit Amount (Drawing No.) Symbol Q'ty PKFY-P25VAM-E R01 22A 635 R01 22A 651...
  • Page 23 ELECTRICAL PARTS PKFY-P20VAM-E PKFY-P25VAM-E 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 TIMER SET PAR-20MAA 12 13 Q'ty / set Price...
  • Page 24 R01 E63 401 LINEAR EXPANSION VALVE HEAD OFFICE : MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU TOKYO 100-8310, JAPAN cCopyright 2004 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in Apr. 2004. No. OC309 PDF 9 New publication, effective Apr. 2004 Made in Japan...

This manual is also suitable for:

Pkfy-p25vam-e

Table of Contents

Save PDF