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.
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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.
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..................6 IV Outlines and Dimensions [1] Outlines and Dimensions......................7 V Wiring Diagram [1] Wiring Diagram ......................... 9 VI Refrigerant System Diagram [1] Refrigerant system diagram....................
[ I Features ] I Features [1] Features Model Cooling capacity/Heating capacity PEFY-P15VMS1(L)-E 1.7/1.9 PEFY-P20VMS1(L)-E 2.2/2.5 PEFY-P25VMS1(L)-E 2.8/3.2 PEFY-P32VMS1(L)-E 3.6/4.0 PEFY-P40VMS1(L)-E 4.5/5.0 PEFY-P50VMS1(L)-E 5.6/6.3 PEFY-P63VMS1(L)-E 7.1/8.0 - 1 - HWE07120...
[ II Components and Functions ] II Components and Functions [1] Components and Functions 1. Indoor (Main) Unit 2. Remote Controller [PAR-21MAA] Once the operation mode is selected, the unit will remain in the selected mode until changed. (1) Remote Controller Buttons [Set Temperature] Button [Vane Control] Button [Timer Menu] Button...
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[ 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 Sensor position Operation mode display: COOL, DRY, AUTO, Room temperature FAN, HEAT Function Lock indicator Vane setting Preset temperature Fan speed...
[ IV Outlines and Dimensions ] IV Outlines and Dimensions [1] Outlines and Dimensions 1. PEFY-P15, 20, 25, 32, 40, 50, 63VMS1-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.
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[ IV Outlines and Dimensions ] 2. PEFY-P15, 20, 25, 32, 40, 50, 63VMS1L-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. 3 The dimensions in the table are those of the PEFY-P40, 50VMS1L-E models, which have 3 fans.
[ 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...
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[ 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...
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[ 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.
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[ 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 if ure (leaky valve) that appears on the operation monitor on the outdoor unit's multi control board while the amount of leak- operating the indoor unit in question in the FAN mode and the other indoor units in age is great.
[ 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.
[ 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.
[ VII Troubleshooting ] 4. Voltage test points on the control board 1. PEFY-P15, 20, 25, 32, 40, 50, 63VMS1(L)-E Fuse Fuse(AC 250V 6.3A) Power supply voltage (220 - Fuse 240VAC) CN2M For M-NET transmission cable connection (24 - 30VDC) Emergency operation Capacity setting Function setting...
[ VII Troubleshooting ] 5. Dipswitch setting (Factory setting) 1. Function setting (1) SW1 Switch position Function Switch setting Active Thermistor (Intake air ther- Built-in thermistor on the remote Indoor unit mistor) controller Filter clogging detection Available Unavailable Filter life 2500 hr 100 hr Outdoor air intake...
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[ 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-P15VMS1(L)-E PEFY-P20VMS1(L)-E PEFY-P25VMS1(L)-E PEFY-P32VMS1(L)-E PEFY-P40VMS1(L)-E PEFY-P50VMS1(L)-E PEFY-P63VMS1(L)-E 3.
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[ VII Troubleshooting ] 6. Connection No. setting (1) SW14 (Rotary switch) This switch is used when the unit connected to an R2 series of outdoor unit. 1) Address board Factory setting Note: Changes to the dipswitches SW11, SW12, SW14, and SW15 must be made while the unit is stopped and the remote controller is OFF.
[ 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 two fixing screws on the cover (A) to remove Fig.1 Fig.2 - 22 - HWE07120...
[ 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) Remove the two fixing screws on the metal base (B) to re- move it.
[ 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.
[ 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.
[ 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.
[ VIII Disassembly Procedure ] 6. Bearing P40, P50, P63 models only. Exercise caution when removing heavy parts. 1. Removeing the bearing (1) Remove the two fixing screws on the bearing cover (M) to remove it. Fig.14 (2) Remove the two bearing retainer screws to remove the bearing.
[ VIII Disassembly Procedure ] 7. 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.
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Aug. 2007 HWE07120 New publication, effective Aug. 2007 Printed in Japan Specifications subject to change without notice...