2004 Air-Conditioners For Building Application TECHNICAL & SERVICE MANUAL Floor Standing Type Series PFFY <Indoor unit> PFFY-P20VLEM-E,PFFY-P20VLRM-E Models PFFY-P25VLEM-E,PFFY-P25VLRM-E PFFY-P32VLEM-E,PFFY-P32VLRM-E PFFY-P40VLEM-E,PFFY-P40VLRM-E PFFY-P50VLEM-E,PFFY-P50VLRM-E PFFY-P63VLEM-E,PFFY-P63VLRM-E CONTENTS SAFETY PRECAUTIONS ·························1 1. FEATURES ···········································3 2. PART NAMES AND FUNCTIONS ········4 3. SPECIFICATION ···································6 4. OUTLINES AND DIMENSIONS············8 5.
- Inadequate strength may cause the unit to fall down, resulting in is shorted and operated forcibly, or parts other than those specified injuries. by Mitsubishi Electric are used, fire or explosion may result. • Use the specified cables for wiring. Make the connections se- curely so that the outside force of the cable is not applied to the •...
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Precautions for devices that use R410A or R407C refrigerant Caution: • Do not use the existing refrigerant piping. - The old refrigerant and refrigerator oil in the existing piping con- tains a large amount of chlorine which may cause the refrigerator oil of the new unit to deteriorate.
PART NAMES AND FUNCTIONS Indoor (Main) Unit Air outlet Air outlet Air inlet Air inlet Exposed type Concealed type Remote controller [PAR-20MAA] Once the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button. [Operation uttons] CENTRALLY CONTROLLED...
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[Display] CENTRALLY CONTROLLED 1Hr. ON OFF ˚C CLOCK CHECK FILTER CHECK MODE ˚C TEST RUN STAND BY ERROR CODE FUNCTION NOT AVAILABLE DEFROST TEMP. ON/OFF I KL J Current time/Timer Centralized control Timer ON Abnormality occurs Operation mode: COOL, DRY, AUTO, FAN, HEAT...
TROUBLE SHOOTING 7-1. How to check the parts Parts name Check points Room temparature Disconnect the connector, then measure the resistance using a tester. thermistor (TH21) (Surrounding temperature 10°C~30°C) Liquid pipe thermistor (TH22) Normal Abnormal Gas pipe thermistor (Refer to the thermistor characteristic graph (TH23) 4.3kΩ...
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<Thermistor Characteristic graph> < Thermistor for lower temperature > Room temparature thermistor(TH21) Thermistor for Liquid pipe thermistor(TH22) lower temperature Gas pipe temparature thermistor(TH23) Drain sensor(DS) =15kΩ ± 3% Thermistor R Fixed number of B=3480kΩ ± 2% Rt=15exp { 3480( 273+t 0˚C 15kΩ...
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<Output pulse signal and the valve operation> Output Output : 1 ¡ 2 ¡ 3 ¡ 4 ¡ 1 (Phase) Closing a valve Opening a valve : 4 ¡ 3 ¡ 2 ¡ 1 ¡ 4 ø1 The output pulse shifts in above order. ø2 ✻...
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7-2. Setting of address switch Make sure that power source is turning off. Indoor unit control board SW 3 S W 4 < At delivery (All models)> S W 4 < At delivery (All models)> 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 9 10...
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7-3. Function of Dip-switch Operation by switch Switch Pole Function Remarks Thermistor<Intake temperature Indoor unit Built-in remote controller Address board detection>position Filter crogging detection Provided Not provided <At delivery> Filter life 2,500hr 100hr 1 2 3 4 5 6 7 8 9 10 Air intake Effective Not effective...
DISASSEMBLY PROCEDURE 8-1 CONTROL BOX (Exposed type PFFY-P·VLEM) Be careful removing heavy parts. OPERATING PROCEDURE PHOTOS 1.Removing the front panel (A) (1)Remove the fixing screws(two) of the front panel(A).(Fig.1) (2)Hold the bottom of the front panel with your hands,and gently lift it. The front panel should fall down forward.(Fig.2) 2.Removing the control box cover (B) (1)Remove the fixing screws(two) of the cover(B) and...
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8-2 THERMISTOR (Gas and liquid piping temperature detection) Be careful removing heavy parts. OPERATING PROCEDURE OPERATING PROCEDURE PHOTOS PHOTOS 1.Removing the side casing (1)Open the control panel cover(A), remove the fixing screws(two) of the securing cover. (Fig. 1) (2)Pull up the side casing(B). (Fig. 2) Fig.1 Fig.2 2.Removing the thermistor...
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8-3 THERMISTOR (Intake air temperature detection) Be careful removing heavy parts. OPERATING PROCEDURE PHOTOS 1.Removing the thermistor (1)Remove the thermistor under the control box. Thermistor Fig.1 8-4 DRAINPAN OPERATING PROCEDURE PHOTOS 1.Removing the drainpan (1)Remove the fixing screw of the side frame by the control box.
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8-5 FAN and FAN MOTOR Be careful removing heavy parts. OPERATING PROCEDURE PHOTOS 1.Sliding the fan section (Fig.1) (1)Remove the fixing screws(two) (a). (2)Slide the fan section in direction of the arrow ➀. 2.Removing the fan motor (Fig.2) (1)Remove the fixing screws (two)(b) of the fan cas- ing(A).
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8-6 HEAT EXCHANGER Be careful removing heavy parts. OPERATING PROCEDURE PHOTOS 1.Removing the casing (1)Remove the fixing screws(six) and remove the casing. (Fig. 1) 2.Removing the cover1,2 with procedure 8-2 (Fig. 2) 3.Removing the Heat exchanger (1)Remove the fixing screws(four) and remove the heat exchanger support.
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8-7 CASING (Concealed type PFFY-P·VLRM) Be careful removing heavy parts. OPERATING PROCEDURE PHOTOS 1.Removing the casing ass’y (1)Remove the fixing screws (nine) of the plate(A) and remove the plate. (Fig. 1) 2.Removing the air diffuser ass’y (1)Remove the fixing screws (eight) of the air diffuser ass’y(B) and remove it.
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HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN Issued in June 2004 MEE04K244 New publication, effective June 2004 Printed in Japan Specifications subject to change without notice...
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Related Links Model Number: PFFY-P63VLEM-E PFFY-P20-63VL(E)(R)M(M)-E Declaration of Conformity PFFY-P20-63VL(E)(R)M(M)-E Instruction Book (WT04883X05) PFFY-P20-63VL(E)(R)M-E Installation Manual (WT04208X05) PFFY-P20-63VL(E)(R)M-E Parts Catalogue (BWE0405G) PFFY-P20-63VL(E)(R)M-E Service Manual (MEE04K244) PFFY-P20-63VLEM-E Product Information Sheet PFFY-P20-63VLEM_Parts_Catalog_(BWE0405C) PFFY-P20-63VLEM_Declaration_of_Conformity_(EU-04002A_2) PFFY-P20-63VLEM_Installation_Manual_(WT04208X02) PFFY-P20-63VLEM_Instruction_Book_(WT04187X03) PFFY-P20-63VLEM_Service_Manual_(MEE04K244)