Mitsubishi Electric PEFY Series Technical & Service Manual
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Summary of Contents for Mitsubishi Electric PEFY Series
- Page 1 2021 AIR CONDITIONERS TECHNICAL & SERVICE MANUAL Series PEFY Model name <Indoor unit> PEFY-WL40VMHS-A, PEFY-WL50VMHS-A PEFY-WL63VMHS-A, PEFY-WL71VMHS-A PEFY-WL80VMHS-A, PEFY-WL100VMHS-A PEFY-WL125VMHS-A INDOOR UNIT...
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Page 2: Safety Precautions
Indicates an action that must be avoided. the ones that are recommended by Mitsubishi Electric may result in smoke, fire, or explosion. Consult your dealer for proper disposal method. - Page 3 HWE20140...
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Page 4: Table Of Contents
CONTENTS I Features [1] Features............................ 1 II Part Names and Functions [1] Part Names and Functions ....................... 2 1.Indoor (main) unit........................2 2.Remote controller ........................3 III Specification [1] Specification ..........................9 1.Specification ........................... 9 2.Electrical parts specifications....................10 IV Outlines and Dimensions [1] Outlines and Dimensions...................... - Page 5 HWE20140...
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Page 6: Features
[ I Features ] I Features [1] Features Series PEFY Ceiling Concealed Indoor unit Cooling capacity/Heating capacity Models PEFY-WL40VMHS-A 4.5 / 5.0 PEFY-WL50VMHS-A 5.6 / 6.3 PEFY-WL63VMHS-A 7.1 / 8.0 PEFY-WL71VMHS-A 8.0 / 9.0 PEFY-WL80VMHS-A 9.0 / 10.0 PEFY-WL100VMHS-A 11.2 / 12.5 PEFY-WL125VMHS-A 14.0 / 16.0 - 1 -... -
Page 7: Part Names And Functions
[ II Part Names and Functions ] II Part Names and Functions [1] Part Names and Functions 1. Indoor (main) unit Air outlet Air inlet - 2 - HWE20140... -
Page 8: Remote Controller
[ II Part Names and Functions ] 2. Remote controller Wired remote controller function * The functions which can be used are restricted according to the model. : Supported : Unsupported PAR-40MAA Function Slim City multi Body Product size H 14.5 l l u Backlight... - Page 9 [ II Part Names and Functions ] The main display can be displayed in two different modes: "Full" and "Basic". The initial setting is "Full". To switch to the "Basic" mode, change the setting on the Main display setting. <Full mode> <Basic mode>...
- Page 10 [ II Part Names and Functions ] Menu structure Main menu Operation Vane•Louver•Vent. (Lossnay) High power Comfort Manual vane angle 3D i-See sensor Timer menu Timer On/Off timer Auto-Off timer Weekly timer OU silent mode Night setback Energy saving Restriction Temp.
- Page 11 [ II Part Names and Functions ] Maintenance menu Error information Filter information Cleaning Auto descending panel Descending operation Descending adjustment Service menu Test run menu Test run Drain pump test run Maintenance information Model name input Serial No. input Dealer information input Initialize maintenance info.
- Page 12 [ II Part Names and Functions ] Main menu list Main menu Setting items Setting details Operation Vane•Louver•Vent. Use to set the vane angle. (Lossnay) • Select a desired vane setting from five different settings. Use to turn ON/OFF the louver. •...
- Page 13 [ II Part Names and Functions ] Main menu Setting items Setting details Initial Basic Clock Use to set the current time. setting setting Daylight Sets the daylight saving time. saving time Display Main Use to switch between "Full" and "Basic" modes for the Status display and the setting display Main display.
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Page 14: Specification
[ III Specification ] III Specification [1] Specification 1. Specification Model PEFY-WL40VMHS-A PEFY-WL50VMHS-A PEFY-WL63VMHS-A PEFY-WL71VMHS-A Power source ~ 220-240V 50Hz/60Hz Cooling capacity *1 Heating capacity *1 Power Cooling 0.055 0.077 0.095 0.075 consumption Heating 0.055 0.077 0.095 0.075 Cooling 0.41 0.58 0.70 0.54... -
Page 15: Electrical Parts Specifications
[ III Specification ] 2. Electrical parts specifications Model PEFY- PEFY- PEFY- PEFY- PEFY- PEFY- PEFY- Symbol WL40VMHS-A WL50VMHS-A WL63VMHS-A WL71VMHS-A WL80VMHS-A WL100VMHS-A WL125VMHS-A Parts name Room temperature TH21 Resistance 0˚C/15 kΩ, 10˚C/9.6 kΩ, 20˚C/6.3 kΩ, 25˚C/5.4 kΩ, 30˚C/4.3 kΩ, 40˚C/3.0 kΩ thermistor Water inlet TH22... -
Page 16: Outlines And Dimensions
[ IV Outlines and Dimensions ] IV Outlines and Dimensions [1] Outlines and Dimensions Unit: mm - 11 - HWE20140... - Page 17 [ IV Outlines and Dimensions ] Unit: mm - 12 - HWE20140...
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Page 18: Wiring Diagram
[ V Wiring Diagram ] V Wiring Diagram [1] Wiring Diagram - 13 - HWE20140... -
Page 19: Water System Diagram
[ VI Water System Diagram ] VI Water System Diagram [1] Water System Diagram Water outlet thermistor TH23 Water outlet Water inlet Connections Water inlet thermistor TH22 Heat exchanger (G) Manual air purge valve Room temperature thermistor TH21 PEFY-WL PEFY-WL 40, 50 63, 71, 80, 100, 125 VMHS-A... -
Page 20: 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 21 [ 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 22 [ VII Troubleshooting ] 2) FCV operation Close Open Fully open valve (85 pulses) Fully close valve (770 pulses) No. of pulses Valve opening degree 3) Drain pump Purple Black 1. Check if the drain float switch works properly. 2. Check if the drain pump works and drains water properly in cooling operation. 3.
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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 1) 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: Setting Of Dip-Switch (At Delivery)
[ VII Troubleshooting ] 4. Setting of dip-switch (at delivery) Models SW21 SW22 PEFY-WL40VMHS-A 9 10 9 10 PEFY-WL50VMHS-A 9 10 9 10 PEFY-WL63VMHS-A 9 10 9 10 PEFY-WL71VMHS-A 9 10 9 10 PEFY-WL80VMHS-A 9 10 9 10 PEFY-WL100VMHS-A 9 10 9 10 PEFY-WL125VMHS-A 9 10... -
Page 26: Disassembly Procedure
[ VIII Disassembly Procedure ] VIII Disassembly Procedure [1] Disassembly Procedure 1. Control box Be careful on removing heavy parts. FIGURES OPERATING PROCEDURE 1. Removing the control box cover Fig. 1 (1) Remove the fixing screws (three) of the control box (A), and Fixing screws remove the cover. -
Page 27: Fan And Fan Motor
[ VIII Disassembly Procedure ] 2. Fan and fan motor Be careful on removing heavy parts. Electric shock hazard. Before performing any work, shut off the power supply. FIGURES OPERATING PROCEDURE Fig. 1 1. Remove the control box cover according to the procedure Connector CNMF1 in section [1]-1. - Page 28 [ VIII Disassembly Procedure ] FIGURES OPERATING PROCEDURE 6. Precautions for reinstalling the removed motor in its Fig. 5 Stamp original position (1) WL40-80 Fix the motor in place so that the stamp printed on the motor faces front when viewed from the air inlet. (Fig. 5) (2) WL100-125 Fig.
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Page 29: Thermistor (Water Inlet/Outlet Piping Temperature Detection)
[ VIII Disassembly Procedure ] 3. Thermistor (Water inlet/outlet piping temperature detection) Be careful on removing heavy parts. FIGURES OPERATING PROCEDURE Fig. 1 1. Removing the thermistors. (1) Remove the control box cover with procedure [1]-1. (2) Remove the fixing screws (seven) of the heat exchanger covers (A) and (B), and remove the covers (A) and (B). -
Page 30: Heat Exchanger
[ VIII Disassembly Procedure ] 4. Heat exchanger Be careful on removing heavy parts. FIGURES OPERATING PROCEDURE Fig. 1 1. Removing the heat exchanger. (1) Remove the bottom plate which is air outlet side. (fixing screws: twelve) (Fig. 1) (2) Remove the drainpan. (Fig. 2) (3) Remove the covers (A), (B), (C), and (D). - Page 31 [ VIII Disassembly Procedure ] FIGURES OPERATING PROCEDURE (5) Remove the heat exchanger. (fixing screws: five) (Fig. 5, 6) Fig. 5 *Removed heat exchanger is as shown Fig. 7. Fixing screws Fig. 6 Fixing screws Fig. 7 - 26 - HWE20140...
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Page 32: Control Box Inside Layout
[ VIII Disassembly Procedure ] 5. Control box inside layout Diode bridge AC reactor Power source Transmission terminal bed terminal bed - 27 - HWE20140... - Page 33 www.MitsubishiElectric.com New publication effective Mar. 2021 Specifications subject to change without notice HWE20140...
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