- 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 •...
Page 3
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 G Indoor (Main) Unit Air outlet Air inlet [PAR-20MAA] G Remote controller Once the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button. [Operation buttons] 1Hr. CENTRALLY CONTROLLED ON OFF °C CLOCK CHECK...
Page 6
[Display] 1Hr. CENTRALLY CONTROLLED 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 temperature Disconnect the connector, then measure the resistance using a tester. thermistor (Sorrounding temperature 10°C~30°C) (TH21) Liquid pipe thermistor (TH22) Normal Abnormal Gas pipe thermistor (Refer to the thermistor characteristic graph) 4.3k ~9.6k Open or short...
Page 16
7-2. Setting of address switch Make sure that power source is turning off. Indoor unit control board S W 4 SW 2 SW 3 < At delivery (All models)> S W 1 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...
Page 17
7-3. Setting of Dip-switch (at delivery) Models Dip-SW S W3 S W4 SW 5 PEFY-P40VMH-E 220V 240V 1 2 3 4 5 6 7 8 910 1 2 3 4 5 6 1 2 3 4 5 6 7 8 910 1 2 3 S W 4 S W3...
DISASSEMBLY PROCEDURE Be careful on removing heavy parts. 8-1. CONTROL BOX OPERATING PROCEDURE PHOTOS Models 40~140 1.Removing the control box cover Fig.1 (1) Remove the fixing screws (two) of the control box (A), and remove the cover. (Fig. 1) *At this stage, the following servicing is possible. 1 Operation and check of the switches (listed below) which are on the control board.
Page 19
Be careful on removing heavy parts. OPERATING PROCEDURE PHOTOS · Models 200 Fig.4 1.Removing the control box cover (1) Remove the fixing screws (four) of the control box cover (C), and remove the cover. (Fig. 4) *At this stage, the following servicing is possible.(Fig. 5) 1 Operation and check of the switches (listed below) which are on the control board.
Be careful on removing heavy parts. 8-2. FAN and FAN MOTOR OPERATING PROCEDURE PHOTOS Models 40~140 Fig.1 1.Removing the control box. (1) Remove the control box cover and terminal bed cover with procedure 8-1. (2) Remove the fan motor connectors. (3) Remove the fixing screws (two) of the control box and slide the control box to remove.(Fig.
Page 21
Be careful on removing heavy parts. OPERATING PROCEDURE PHOTOS (4) Slide the motor (A) with motor base (D) in direction of allow Fig.5 1 . (Fig. 5) Arrow 1 Fig.6 Motor (A) Models 100~140 *Motor maintenance procedure is almost 40~80 models procedure.
Page 22
Be careful on removing heavy parts. OPERATING PROCEDURE PHOTOS Models 200· 250 Control box Fig.7 1.Removing the control box. cover 2 (1) Remove the control box cover1 with procedure 8-1. (2) Remove the fixing screws (four) of the control cover 2, and remove the control cover2.
Page 23
Be careful on removing heavy parts. OPERATING PROCEDURE PHOTOS (3) After removing the fixing screws (H)(as shown models Fig.11 100~140) of the front fan case(B) and remove the fan. Pull the fan case (B). (4) Remove the fixing screws (K)(three) of the bell mouse (J) attached fan case (L), and remove the bell mouse (J).
Page 24
Be careful on removing heavy parts. 8-3. LEV,THERMISTOR (Liquid/Gas piping temperature detection) OPERATING PROCEDURE PHOTOS Models 40~140 Fig.1 1.Removing the LEV. (1) Remove the control box cover with procedure 8-1. (2) Remove the fixing screws (four) of the heat exchanger cover (A), and remove the cover (A).(Fig.
Be careful on removing heavy parts. 8-4. HEAT EXCHANGER OPERATING PROCEDURE PHOTOS Models 40~140 Fig.1 1.Removing the heat exchanger. (1) Remove the heat exchanger cover with procedure 8-3-1. Bottom plate (2) Remove the bottom plate which is air outlet side.(fixing screws : ten) (Fig.
Page 26
Be careful on removing heavy parts. OPERATING PROCEDURE PHOTOS (4) Remove the maintenance cover.(fixing screws : two) (Fig. 4) Fig.4 (5) Remove the heat exchanger.(fixing screws : four) (Fig. 3,5) *Removerd heat exchanger is as shown Fig .6 Maintenance cover Fixing screws Fig.5 Fixing screws...
Page 27
Be careful on removing heavy parts. OPERATING PROCEDURE PHOTOS · Models 200 Fig.7 1.Removing the heat exchanger. (1) Remove the refrigerant piping and drain hose from main Bottom plate unit.(Be care that water is not leaking from drain hose. ) (2) Remove the power supply wire and the transmission line.
Page 28
Be careful on removing heavy parts. OPERATING PROCEDURE PHOTOS (7) Remove the fixing screws (three) of the heat exchanger Fig.10 cover, and remove the cover. Remove the fixing screws (four) of the maintenance cover, and remove the cover. (Fig. Fixing screws (7) Remove the heat exchanger.
Page 29
8-5. CONTROL BOX INSIDE LAYOUT Models 40~140 Trans Condenser (for motor) Indoor unit FAN2 CN3T STR2012 contoller board FAN3 DSA board CN52 CN60 CN81 CN27 CN82 CN62 SW14 SW12 SW11 Transmission terminal bed Power sourse Address board terminal bed Models 200· 250 Magnet contactor Trans FAN2...
Page 30
8-6. SENSOR POSITION GPEFY-P50· 63VMH-E GPEFY-P40VMH-E Liquid sensor Liquid sensor Gas sensor Gas sensor GPEFY-P71· 80VMH-E GPEFY-P100· 125VMH-E Gas sensor(100) Liquid sensor Liquid sensor Gas sensor(125) Gas sensor GPEFY-P200· 250VMH-E GPEFY-P140VMH-E Liquid sensor Liquid sensor( 200·250) Gas sensor(200) Gas sensor Gas sensor(250)
Page 31
HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN Issued in June 2004 MEE04K242 New publication, effective June 2004 Printed in Japan Specifications subject to change without notice...