Mitsubishi Electric CITY MULTI PFFY-P20VCM-E Technical & Service Manual
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Mitsubishi Electric CITY MULTI PFFY-P20VCM-E Technical & Service Manual

Mitsubishi Electric CITY MULTI PFFY-P20VCM-E Technical & Service Manual

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Summary of Contents for Mitsubishi Electric CITY MULTI PFFY-P20VCM-E

  • Page 2 - Forced operation of the pressure switch or the temperature switch by defeat- ing the safety features for these devices, or the use of accessories other than the ones that are recommended by Mitsubishi Electric may result in smoke, Indicates important instructions.
  • Page 3 Exercise special care when handling tools for use with R410A. - Infiltration of dust, dirt, or water into the refrigerant system may cause the refrigerator oil to deteriorate. HWE18160...

  • Page 4: Table Of Contents

    CONTENTS I Features [1] Features............................ 1 II Components and Functions [1] Components and Functions...................... 2 III Specfications [1] Specifications..........................5 1.Specfications .......................... 5 2.Electrical component specifications..................7 IV Outlines and Dimensions [1] Outlines and Dimensions......................8 V Wiring Diagram [1] Wiring Diagram ........................12 VI Refrigerant System Diagram [1] Refrigerant system diagram....................
  • Page 5 HWE18160...

  • Page 6: Features

    [ I Features ] I Features [1] Features Model Cooling capacity/Heating capacity PFFY-P20VCM-E 2.2/2.5 PFFY-P25VCM-E 2.8/3.2 PFFY-P32VCM-E 3.6/4.0 PFFY-P40VCM-E 4.5/5.0 PFFY-P50VCM-E 5.6/6.3 PFFY-P63VCM-E 7.1/8.0 - 1 - HWE18160...

  • Page 7: Components And Functions

    [ II Components and Functions ] II Components and Functions [1] Components and Functions 1. Indoor (Main) Unit - 2 - HWE18160...
  • Page 8 [ II Components and Functions ] 2. Remote Controller [PAR-40MAA] Once the operation mode is selected, the unit will remain in the selected mode until changed. (1) Remote Controller Buttons Function buttons [ON/OFF] button The functions of the function buttons change depending on the screen. Refer to the button function guide that appears at the bottom of the LCD for Press to turn ON/OFF the indoor unit.
  • Page 9 [ II Components and Functions ] (2) Remote Controller Display The main display can be displayed in two different modes: “Full” and “Basic.” The factory setting is “Full.” To switch to the “Basic” mode, change the setting on the Main display setting. ▌...

  • Page 10: Specfications

    [ III Specfications ] III Specfications [1] Specifications 1. Specfications Model name PFFY- PFFY- PFFY- P20VCM-E P25VCM-E P32VCM-E Power source ~ 220-240V 50Hz/60Hz Cooling capacity Heating capacity Power consumption Cooling 0.022 0.026 0.031 Heating 0.022 0.026 0.031 Current Cooling 0.25 0.30 0.34 Heating...
  • Page 11 [ III Specfications ] Model name PFFY- PFFY- PFFY- P40VCM-E P50VCM-E P63VCM-E Power source ~ 220-240V 50Hz/60Hz Cooling capacity Heating capacity Power consumption Cooling 0.038 0.052 0.058 Heating 0.038 0.052 0.058 Current Cooling 0.38 0.50 0.49 Heating 0.38 0.50 0.49 External finish Galvanized steel plate Dimension...

  • Page 12: Electrical Component Specifications

    [ III Specfications ] 2. Electrical component specifications Component Sym- PFFY-P20VCM-E PFFY-P25VCM-E PFFY-P32VCM-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 Fuse FUSE 250VAC 6.3A...

  • Page 13: Outlines And Dimensions

    [ IV Outlines and Dimensions ] IV Outlines and Dimensions [1] Outlines and Dimensions 1. PFFY-P20, 25, 32, 40, 50, 63VMC-E Bottom suction ꞏ wall mounting Unit: mm - 8 - HWE18160...
  • Page 14 [ IV Outlines and Dimensions ] Unit: mm - 9 - HWE18160...
  • Page 15 [ IV Outlines and Dimensions ] 2. PFFY-P20, 25, 32, 40, 50, 63VMC-E Bottom suction ꞏ floor mounting Unit: mm - 10 - HWE18160...
  • Page 16 [ IV Outlines and Dimensions ] Unit: mm - 11 - HWE18160...

  • Page 17: Wiring Diagram

    [ V Wiring Diagram ] V Wiring Diagram [1] Wiring Diagram 1. PFFY-P20,25,32,40,50,63VCM-E - 12 - HWE18160...

  • Page 18: 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 PFFY-P20, 25, 32, 40, 50VCM-E PFFY-P63VCM-E...

  • Page 19: 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 20 [ 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 Control board...
  • Page 21 [ VII Troubleshooting ] 2) LEV operation Close Open Fully open valve (2000 pulses) No. of pulses Extra tightning (0 - 200 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 22 [ 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 23: 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 (CNMF1). Do not unplug the connector CNMF1 with the unit energized to avoid damage to the indoor control board and fan motor. 2.

  • Page 24: Setting Of Address Switch

    [ VII Troubleshooting ] 3. Setting of address switch Make sure that power source is turning off. Indoor unit control board Incase using network remote controller, address is set by rotary switches. (SW11,SW12) It is not necessary setting address in case of using unit remote controller. Indoor unit do not run without address setting in field.

  • Page 25: Voltage Test Points On The Control Board

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

  • Page 26: Setting Of Dip-Switch (At Delivery)

    [ VII Troubleshooting ] 5. Setting of Dip-switch (at delivery) Models SW21 SW22 SWE PFFY- P20VCM-E 9 10 9 10 PFFY- P25VCM-E 9 10 9 10 PFFY- P32VCM-E 9 10 9 10 PFFY- P40VCM-E 9 10 9 10 PFFY- P50VCM-E 9 10 9 10 PFFY-...

  • Page 27: Selecting The External Static Pressure

    [ VII Troubleshooting ] (2) SW3 Switch position Function Switch setting Unit type Cooling only Heat pump 7. Selecting the external static pressure Four levels of external static pressure (0 Pa/10 Pa/40 Pa/60 Pa) are available for selection. Set the setting either by using the switches on the control board (SW21-1, SW21-2, and SW21-5) or from the function selection screen on the remote controller.

  • Page 28: Setting Addresses

    [ VII Troubleshooting ] 8. Setting addresses (Be sure to operate with the main power turned OFF.) There are two types of rotary switch setting available: setting addresses 1 to 9 and over 10, and setting branch numbers. 1) How to set addresses Example: If Address is “3”, remain SW12 (for over 10) at “0”, and match SW11 (for 1 to 9) with “3”.

  • Page 29: Disassembly Procedure

    [ VIII Disassembly Procedure ] VIII Disassembly Procedure [1] Disassembly Procedure 1. Control box Be careful removing heavy parts. 1. Removing the control box cover (1) Remove the fixing screws (three) of the control box, and Fixing screws remove the cover (A). (Fig.1) *At this stage, the following servicing is possible.

  • Page 30: Thermistor (Intake Air)

    [ VIII Disassembly Procedure ] 2. Thermistor (Intake air) Be careful removing heavy parts. 1. Remove the control box cover (A) according with proce- dure [1]-1. 2. Remove the thermistor. (1) Pull out the thermistor holder (B) and thermistor (C) on the control box in Fig.

  • Page 31: Drain Pan

    [ VIII Disassembly Procedure ] 3. Drain pan Be careful removing heavy parts. 1. Remove the control box cover (A) with procedure [1]-1. 2. Remove the fixing screws on the front plate (D), (E) to re- move it. (Fig. 4) Fig.4 3.

  • Page 32: Lev, Thermistor (Liquid/Gas Piping Temperature Detection)

    [ VIII Disassembly Procedure ] 4. LEV, thermistor (Liquid/Gas piping temperature detection) Be careful removing heavy parts. 1. Removing the LEV. (1) Remove the control box cover (A) with procedure [1]-1. (a) LEV (2) Remove the front plate (D) with procedure [1]-3. (3) Remove the LEV driving motor.

  • Page 33: Fan And Fan Motor

    [ VIII Disassembly Procedure ] 5. Fan and fan motor Be careful removing heavy parts. 1. Removing the LEV. (1) Push down the tab on the filter, and pull out the filter in the direction of the arrow. (Fig.11) (2) Remove the control box cover (A) with procedure [1]-1. (3) Remove the front plate (D), (E) with procedure [1]-3.

  • Page 34: Bearing

    [ VIII Disassembly Procedure ] 6. Bearing P40, P50, P63 models only. Be careful removing heavy parts. 1. Removing the bearing (1) Remove the two fixing screws on the bearing cover (M) to remove it. (Fig. 15) Fig.15 (2) Remove the two bearing retainer screws to remove the bearing.

  • Page 35: Heat Exchanger

    [ VIII Disassembly Procedure ] 7. Heat exchanger Be careful removing heavy parts. 1. Removing the control box cover, front plate, control box and drain pan (1) Remove the control box cover (A) with procedure [1]-1. (2) Remove the front plate (D), (E) with procedure [1]-3. (3) Remove the control box (F) with procedure [1]-3.
  • Page 36 [ VIII Disassembly Procedure ] Note: In order to attach and fix the heat exchanger, insert the hook (a) on the heat exchanger (Fig. 21) to (b) (Fig. 22). Fig.21 Fig.22 - 31 - HWE18160...

  • Page 37: Control Box Inside Layout

    [ VIII Disassembly Procedure ] 8. Control box inside layout AC reactor Power source (P63 model only) terminal bed Transmission terminal bed - 32 - HWE18160...

  • Page 38: Sensor Position

    [ VIII Disassembly Procedure ] 9. Sensor position PFFY-P20, 25VCM-E PFFY-P32VCM-E Gas sensor Gas sensor Liquid sensor Liquid sensor PFFY-P40, 50, 63VCM-E Gas sensor Liquid sensor - 33 - HWE18160...

This manual is also suitable for:

City multi pffy-p40vcm-eCity multi pffy-p25vcm-eCity multi pffy-p50vcm-eCity multi pffy-p32vcm-eCity multi pffy-p63vcm-e

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