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Related Manuals for Mitsubishi Electric CITY MULTI PFFY-W20VCM-A
Summary of Contents for Mitsubishi Electric CITY MULTI PFFY-W20VCM-A
- 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 Indicates important instructions. the ones that are recommended by Mitsubishi Electric may result in smoke, fire, or explosion. Consult your dealer for proper disposal method.
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Page 4: Table Of Contents
CONTENTS I Features [1] Features............................ 1 II Components and Functions [1] Components and Functions...................... 2 III Specfications [1] Specifications..........................3 1.Specfications .......................... 3 2.Electrical component specifications..................5 IV Outlines and Dimensions [1] Outlines and Dimensions......................6 V Wiring Diagram [1] Wiring Diagram ........................10 VI Refrigerant System Diagram [1] Refrigerant system diagram.................... - Page 5 HWE18170...
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Page 6: Features
[ I Features ] I Features [1] Features Model Cooling capacity/Heating capacity PFFY-W20VCM-A 2.2/2.5 PFFY-W25VCM-A 2.8/3.2 PFFY-W32VCM-A 3.6/4.0 PFFY-W40VCM-A 4.5/5.0 PFFY-W50VCM-A 5.6/6.3 - 1 - HWE18170... -
Page 7: Components And Functions
[ II Components and Functions ] II Components and Functions [1] Components and Functions 1. Indoor (Main) Unit - 2 - HWE18170... -
Page 8: Specfications
[ III Specfications ] III Specfications [1] Specifications 1. Specfications Model name PFFY- PFFY- PFFY- W20VCM-A W25VCM-A W32VCM-A Power source ~ 220-240V 50Hz/60Hz Cooling capacity Heating capacity Power consumption Cooling 0.022 0.029 0.035 Heating 0.022 0.029 0.035 Current Cooling 0.25 0.33 0.38 Heating... - Page 9 [ III Specfications ] Model name PFFY- PFFY- W40VCM-A W50VCM-A Power source ~ 220-240V 50Hz/60Hz Cooling capacity Heating capacity Power consumption Cooling 0.038 0.062 Heating 0.038 0.062 Current Cooling 0.38 0.52 Heating 0.38 0.52 External finish Galvanized steel plate Dimension Height 615 (690) Width...
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Page 10: Electrical Component Specifications
[ III Specfications ] 2. Electrical component specifications Component Sym- PFFY-W20VCM-A PFFY-W25VCM-A PFFY-W32VCM-A 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 Water inlet pipe 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 thermistor Water outlet pipe 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 11: Outlines And Dimensions
[ IV Outlines and Dimensions ] IV Outlines and Dimensions [1] Outlines and Dimensions 1. PFFY-W20, 25, 32, 40, 50VCM-A Bottom suction ꞏ wall mounting Unit: mm - 6 - HWE18170... - Page 12 [ IV Outlines and Dimensions ] Unit: mm - 7 - HWE18170...
- Page 13 [ IV Outlines and Dimensions ] 2. PFFY-W20, 25, 32, 40, 50VCM-A Bottom suction ꞏ floor mounting Unit: mm - 8 - HWE18170...
- Page 14 [ IV Outlines and Dimensions ] Unit: mm - 9 - HWE18170...
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Page 15: Wiring Diagram
[ V Wiring Diagram ] V Wiring Diagram [1] Wiring Diagram 1. PFFY-W20,25,32,40,50VCM-A - 10 - HWE18170... -
Page 16: Refrigerant System Diagram
[ VI Refrigerant System Diagram ] VI Refrigerant System Diagram [1] Refrigerant system diagram Water outlet thermistor TH23 Water outlet Water inlet Joint connection (connected on site) Water inlet thermistor TH22 Pressure sensor (inner water) PS1 (G) Pressure sensor (outlet water) PS2 Flow control valve FCV Heat exchanger Manual air purge valve... -
Page 17: Troubleshooting
[ VII Troubleshooting ] VII Troubleshooting [1] Troubleshooting 1. Check methods 1. Component and check points (1) Thermistor Room temperature thermistor (TH21) Water inlet thermistor (TH22) Water outlet thermistor (TH23) Disconnect the connector and measure the resistance between terminals with a tester. (Ambient temperature 10°C - 30°C) Normal Abnormal... - Page 18 [ VII Troubleshooting ] 1) Summary of flow control valve (FCV) operation The FCV is operated by a stepping motor, which operates by receiving a pulse signal from the indoor control board. The FCV position changes in response to the pulse signal. Indoor control board and FCV connection Limit signal (Opening...
- Page 19 [ VII Troubleshooting ] 2) FCV operation Close Open Fully open valve (85 pulses) Fully close valve (770 pulses) No. of pulses Valve opening degree (4) Pressure sensor Pressure sensor (inner water) PS1 Pressure sensor (outlet water) PS2 1) Check that the pressure sensor is connected. 2) Check the pressure sensor wiring for breakage.
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Page 20: 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 21: 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 22: Voltage Test Points On The Control Board
[ VII Troubleshooting ] 4. Voltage test points on the control board 1. PFFY-W20, 25, 32, 40, 50VCM-A 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 CN32... -
Page 23: Setting Of Dip-Switch (At Delivery)
[ VII Troubleshooting ] 5. Setting of Dip-switch (at delivery) Models SW21 SW22 SWE PFFY- W20VCM-A 9 10 9 10 PFFY- W25VCM-A 9 10 9 10 PFFY- W32VCM-A 9 10 9 10 PFFY- W40VCM-A 9 10 9 10 PFFY- W50VCM-A 9 10 9 10 The figure at left shows that the switches 1 through 5 are set to ON and 6 through 10 are set to OFF. -
Page 24: 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 25: 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 26: Instructions For Debris Removal Operation
[ VII Troubleshooting ] 11.Instructions for debris removal operation Details are described in the "Instructions for debris removal operation" section in the "Troubleshooting" chapter of the Service Handbook for the HBC or hydro unit. Refer to the figure below for the position of the air vent valve on the indoor unit. (A) Air vent valve 12.Instructions for the air vent operation Details are described in the "Instructions for the air vent operation"... -
Page 27: 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 (A), Fixing screws and remove the cover. (Fig.1) *At this stage, the following servicing is possible. -
Page 28: Thermistor (Intake Air)
[ VIII Disassembly Procedure ] 2. Thermistor (Intake air) Exercise caution when removing heavy parts. 1. Remove the control box cover with procedure [1]-1. 2. Remove the thermistor. (1) Pull out the thermistor holder (B) and thermistor (C) on the control box. -
Page 29: 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 30: Thermistor (Water Inlet / Water Outlet Temperature Detection)
[ VIII Disassembly Procedure ] 4. Thermistor (Water inlet / Water outlet temperature detection) Be careful removing heavy parts. 1. Removing the liquid pipe and gas pipe thermistor (1) Remove the front plate (E) with procedure [1]-3. (2) Remove the control box (F) with procedure [1]-3. (3) Pull out the drain pan with procedure [1]-3. -
Page 31: Fan And Fan Motor
[ VIII Disassembly Procedure ] 5. Fan and fan motor Be careful removing heavy parts. 1. Removing the filter, control box cover, front plate and control box (1) Push down the tab on the filter, and pull out the filter in the direction of the arrow 1 (Fig.10). -
Page 32: Bearing
[ VIII Disassembly Procedure ] 6. Bearing P40, P50 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. 14) Fig.14 (2) Remove the two bearing retainer screws to remove the bearing. -
Page 33: Heat Exchanger (Pressure Sensor And Fcv)
[ VIII Disassembly Procedure ] 7. Heat exchanger (Pressure sensor and FCV) 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. - Page 34 [ VIII Disassembly Procedure ] Note: In order to attach and fix the heat exchanger, insert the hook (a) on the heat exchanger (Fig. 20) to (b) (Fig. 21). Fig.20 Fig.21 5. Removing the pressure sensor (1) Debraze the brazed portion of the pressure sensors in the (Fig.22, 23) and then replace the pressure sensors with service parts.
- Page 35 [ VIII Disassembly Procedure ] 6. Removing the FCV (1) Remove the cover (Q) of the FCV (R). (Fig. 24) Fig.24 (2) Remove the clips (S) on the inlet/outlet of the FCV. (Fig. 25) (3) Remove the inlet/outlet piping connecting the FCV. (Fig.
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Page 36: Control Box Inside Layout
[ VIII Disassembly Procedure ] 8. Control box inside layout AC reactor Power source (W50 model only) terminal bed Transmission terminal bed - 31 - HWE18170... -
Page 37: Sensor Position
[ VIII Disassembly Procedure ] 9. Sensor position PFFY-W20, 25VCM-A PFFY-W32VCM-A Water outlet sensor Water outlet sensor Water inlet sensor Water inlet sensor PFFY-W40, 50VCM-A Water outlet sensor Water inlet sensor - 32 - HWE18170...