Mitsubishi Electric PEFY-P25VMA-E Technical & Service Manual
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Mitsubishi Electric PEFY-P25VMA-E Technical & Service Manual

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Air-Conditioners
TECHNICAL & SERVICE MANUAL
PEFY-P20VMA(L)-E, PEFY-P71VMA(L)-E
Models
PEFY-P25VMA(L)-E, PEFY-P80VMA(L)-E
PEFY-P32VMA(L)-E, PEFY-P100VMA(L)-E
PEFY-P40VMA(L)-E, PEFY-P125VMA(L)-E
PEFY-P50VMA(L)-E, PEFY-P140VMA(L)-E
PEFY-P63VMA(L)-E
For use with R410A, R407C, & R22
2009

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Summary of Contents for Mitsubishi Electric PEFY-P25VMA-E

  • Page 1 2009 Air-Conditioners TECHNICAL & SERVICE MANUAL PEFY-P20VMA(L)-E, PEFY-P71VMA(L)-E Models PEFY-P25VMA(L)-E, PEFY-P80VMA(L)-E PEFY-P32VMA(L)-E, PEFY-P100VMA(L)-E PEFY-P40VMA(L)-E, PEFY-P125VMA(L)-E PEFY-P50VMA(L)-E, PEFY-P140VMA(L)-E PEFY-P63VMA(L)-E For use with R410A, R407C, & R22...
  • Page 2 Have all electrical work performed by an authorized electri- Only use accessories (i.e., air cleaners, humidifiers, electric cian according to the local regulations and the instructions heaters) recommended by Mitsubishi Electric. in this manual. Use a dedicated circuit. Insufficient power supply capacity or improper installation of the unit may result in malfunctions of the unit, electric shock, or fire.
  • Page 3 When installing the unit in a small space, take appropriate mended by Mitsubishi Electric may result in smoke, fire, or precautions to prevent leaked refrigerant from reaching the explosion.

  • Page 4: Table Of Contents

    CONTENTS I Features [1] Features............................ 1 II Components and Functions [1] Components and Functions...................... 2 III Specfications [1] Specifications..........................4 1.Specfications .......................... 4 2.Electrical component specifications..................7 IV Outlines and Dimensions [1] Outlines and Dimensions......................8 V Wiring Diagram [1] Wiring Diagram ........................10 VI Refrigerant System Diagram [1] Refrigerant system diagram....................
  • Page 5 HWE08120...

  • Page 6: Features

    [ I Features ] I Features [1] Features Model Cooling capacity/Heating capacity PEFY-P20VMA(L)-E 2.2/2.5 PEFY-P25VMA(L)-E 2.8/3.2 PEFY-P32VMA(L)-E 3.6/4.0 PEFY-P40VMA(L)-E 4.5/5.0 PEFY-P50VMA(L)-E 5.6/6.3 PEFY-P63VMA(L)-E 7.1/8.0 PEFY-P71VMA(L)-E 8.0/9.0 PEFY-P80VMA(L)-E 9.0/10.0 PEFY-P100VMA(L)-E 11.2/12.5 PEFY-P125VMA(L)-E 14.0/16.0 PEFY-P140VMA(L)-E 16.0/18.0 - 1 - HWE08120...

  • Page 7: Components And Functions

    [ II Components and Functions ] II Components and Functions [1] Components and Functions 1. Indoor (Main) Unit (1) In case of rear inlet (2) In case of bottom inlet Air inlet Air inlet Air outlet Air outlet 2. Remote Controller [PAR-21MAA] Once the operation mode is selected, the unit will remain in the selected mode until changed.
  • Page 8 [ II Components and Functions ] (2) Remote Controller Display Current time/Timer time Louver swing Centralized control indicator Ventilation Timer OFF indicator Filter sign Timer mode indicator Sensor position Operation mode display: COOL, DRY, AUTO, Room temperature FAN, HEAT Function mode indicator Vane setting Preset temperature Fan speed...

  • Page 9: Specifications

    [ III Specfications ] III Specfications [1] Specifications 1. Specfications Model PEFY- PEFY- PEFY- PEFY- P20VMA(L)-E P25VMA(L)-E P32VMA(L)-E P40VMA(L)-E Power supply Voltage 1-phase 220-230-240 Frequency 50/60 Cooling capacity Heating capacity Power consumption Cooling 0.06(0.04) 0.06(0.04) 0.07(0.05) 0.09(0.07) Heating 0.04(0.04) 0.04(0.04) 0.05(0.05) 0.07(0.07) Current consumption...
  • Page 10 [ III Specfications ] Model PEFY- PEFY- PEFY- PEFY- P50VMA(L)-E P63VMA(L)-E P71VMA(L)-E P80VMA(L)-E Power supply Voltage 1-phase 220-230-240 Frequency 50/60 Cooling capacity Heating capacity 10.0 Power consumption Cooling 0.11(0.09) 0.12(0.10) 0.14(0.12) 0.14(0.12) Heating 0.09(0.09) 0.10(0.10) 0.12(0.12) 0.12(0.12) Current consumption Cooling 0.74(0.63) 1.01(0.90) 1.15(1.04)
  • Page 11 [ III Specfications ] Model PEFY-P100VMA(L)- PEFY-P125VMA(L)- PEFY-P140VMA(L)- Power supply Voltage 1-phase 220-230-240 Frequency 50/60 Cooling capacity 11.2 14.0 16.0 Heating capacity 12.5 16.0 18.0 Power consumption Cooling 0.24(0.22) 0.34(0.32) 0.36(0.34) Heating 0.22(0.22) 0.32(0.32) 0.34(0.34) Current consumption Cooling 1.47(1.36) 2.05(1.94) 2.21(2.10) Heating 1.36(1.36)

  • Page 12: Electrical Component Specifications

    [ III Specfications ] 2. Electrical component specifications Component Sym- PEFY- PEFY- PEFY- P20VMA(L)-E P25VMA(L)-E P32VMA(L)-E Room temperature TH21 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ thermistor Liquid pipe thermistor TH22 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ Gas pipe thermistor TH23 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ...

  • Page 13: Outlines And Dimensions

    [ IV Outlines and Dimensions ] IV Outlines and Dimensions [1] Outlines and Dimensions 1. PEFY-P20, 25, 32, 40, 50, 63, 71, 80, 100, 125, 140VMA-E Space required for service and maintenance. Provide an access door for maintenance at the bottom. Note 1 Use M10 suspension bolts.
  • Page 14 [ IV Outlines and Dimensions ] 2. PEFY-P20, 25, 32, 40, 50, 63, 71, 80, 100, 125, 140VMAL-E Space required for service and maintenance. Provide an access door for maintenance at the bottom. Note 1 Use M10 suspension bolts. (not supplied) 2 Provide an access door for maintenance at the bottom.

  • Page 15: Wiring Diagram

    [ V Wiring Diagram ] V Wiring Diagram [1] Wiring Diagram 1. PEFY-P20, 25, 32, 40, 50, 63, 71, 80, 100, 125, 140VMA(L)-E - 10 - HWE08120...
  • Page 16 [ V Wiring Diagram ] Table.1 SYMBOL EXPLANATION SYM- NAME SYM- NAME SYM- NAME I.B. Indoor controller board CN32 Connector (Remote switch) Switch (for capacity code) (I.B.) P.B. Power supply board CN41 Connector (HA terminal-A) Switch (for mode selection) (I.B.) Power source terminal block CN51 Connector (Centrally control)

  • Page 17: Refrigerant System Diagram

    [ VI Refrigerant System Diagram ] VI Refrigerant System Diagram [1] Refrigerant system diagram Gas pipe thermistor TH23 Gas pipe Liquid pipe Brazed connections Strainer (#100 mesh) Linear expansion valve Liquid pipe thermistor TH22 Heat exchanger Room temperature thermistor TH21 Capacity PEFY- PEFY-...

  • Page 18: Troubleshooting

    [ VII Troubleshooting ] VII Troubleshooting [1] Troubleshooting 1. Check methods 1. Component and check points (1) Thermistor Room temperature thermistor (TH21) Liquid pipe thermistor (TH22) Gas pipe thermistor (TH23) Disconnect the connector and measure the resistance between terminals with a tester. (Ambient temperature 10°C - 30°C) Normal Abnormal...
  • Page 19 [ VII Troubleshooting ] 1) Summary of linear expansion valve (LEV) operation The LEV is operated by a stepping motor, which operates by receiving a pulse signal from the indoor control board. The LEV position changes in response to the pulse signal. Indoor control board and LEV connection 12VDC Brown...
  • Page 20 [ VII Troubleshooting ] 2) LEV operation Close Open Fully open valve (2000 pulses) No. of pulses Extra tightning (80 - 100 pulse) Valve opening degree When the power is turned on, a pulse signal of 2200 pulses is output (valve closure signal), to bring the valve to position A. When the valve is operating normally, it is free of vibration noise.
  • Page 21 [ VII Troubleshooting ] Symptom Checking Criteria Remedy Valve closure fail- To check the LEV on the indoor unit, check the indoor unit liquid pipe temperature Replace the LEV ure (leaky valve) that appears on the operation monitor on the outdoor unit's multi control board while if the amount of operating the indoor unit in question in the FAN mode and the other indoor units in leakage is great.

  • Page 22: Dc Fan Motor (Fan Motor/Indoor Control Board)

    [ VII Troubleshooting ] 2. DC fan motor (fan motor/indoor control board) 1. CAUTION A high voltage is applied to the connector for connection to the fan motor (CNMF). Do not unplug the connector CNMF with the unit energized to avoid damage to the indoor control board and fan motor. 2.

  • Page 23: Address Switch Setting

    [ VII Troubleshooting ] 3. Address switch setting Make sure that power to the unit is turned off. Indoor unit control board Factory setting (all models) 1. When using an ME remote controller, set the address with the rotary switches (SW11, SW12). Address setting is not required when the unit remote controller is used.

  • Page 24: Voltage Test Points On The Control Board

    [ VII Troubleshooting ] 4. Voltage test points on the control board 1. PEFY-P20, 25, 32, 40, 50, 63, 71, 80, 100, 125, 140VMA(L)-E Fuse(AC 250V 6.3A) Power supply voltage (220 - CN2M 240VAC) CN2M For M-NET transmission cable connection (24 - 30VDC) Emergency operation Capacity setting CN41...

  • Page 25: Dipswitch Setting (Factory Setting)

    [ VII Troubleshooting ] 5. Dipswitch setting (Factory setting) 1. Function setting (1) SW1 Switch position Function Switch setting Active Thermistor (Intake air Built-in thermistor on the remote Indoor unit thermistor) controller Filter clogging detection Available Unavailable Filter life 2500 hr 100 hr Outdoor air intake Enabled...
  • Page 26 [ VII Troubleshooting ] 2. Capacity code setting (1) SW2 1) Indoor control board Dipswitch settings must be made while the unit is stopped. Factory setting The switches are set to correspond to the unit capacity. PEFY-P20VMA(L)-E PEFY-P25VMA(L)-E PEFY-P32VMA(L)-E PEFY-P40VMA(L)-E PEFY-P50VMA(L)-E PEFY-P63VMA(L)-E PEFY-P71VMA(L)-E...
  • Page 27 [ VII Troubleshooting ] 5. External static pressure (1) SWA, SWC 1) Indoor control board All models Factory 35Pa 50Pa 70Pa 100Pa 150Pa setting SWA SWC Note: Changes that are made to the dipswitches SWA and SWC immediately become effective regardless of the unit's operation status (RUN/STOP) or the remote controller status (ON/OFF).

  • Page 28: Disassembly Procedure

    [ VIII Disassembly Procedure ] VIII Disassembly Procedure [1] Disassembly Procedure 1. Control box Exercise caution when removing heavy parts. 1. Removing the control box cover (1) Remove the three fixing screws on the cover (A) to re- move it. Fig.1 Fig.2 - 23 -...

  • Page 29: Thermistor (Intake Air)

    [ VIII Disassembly Procedure ] 2. Thermistor (Intake air) Exercise caution when removing heavy parts. 1. Remove the control box cover according to the procedure in section [1]. 2. Remove the thermistor. (1) Pull out the thermistor holder (B) and thermistor (C) on the control box.

  • Page 30: Drainpan

    [ VIII Disassembly Procedure ] 3. Drainpan Exercise caution when removing heavy parts. 1. Removing the filter and the bottom plate (1) Push down the tab on the filter, and pull out the filter in the direction of the arrow 1. (2) Remove the fixing screws on the bottom plate (D), (E) to remove it.

  • Page 31: Thermistor (Gas Pipe) (Liquid Pipe)

    [ VIII Disassembly Procedure ] 4. Thermistor (Gas pipe) (Liquid pipe) Exercise caution when removing heavy parts. 1. Remove the drain pan according to the procedure in sec- tion [1]. 2. Removing the Heat exchanger cover (1) Remove the four fixing screws on the heat exchanger cov- er (F) to remove it.

  • Page 32: Fan And Fan Motor

    [ VIII Disassembly Procedure ] 5. Fan and fan motor Exercise caution when removing heavy parts. 1. Removing the filter and the bottom plate (1) Push down the tab on the filter, and pull out the filter in the direction of the arrow 1. (2) Remove the fixing screws on the bottom plate (J) to re- move it.

  • Page 33: Heat Exchanger

    [ VIII Disassembly Procedure ] 6. Heat exchanger Exercise caution when removing heavy parts. 1. Remove the drain pan according to the procedure in section [1]. 2. Remove the heat exchanger cover according to the proce- dure in section [4] 2. 3.
  • Page 34 Apr. 2009 HWE08120 New publication, effective Apr. 2009 Specifications subject to change without notice...

This manual is also suitable for:

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