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Mitsubishi Electric PEFY-P100VMM-E, Service Manual

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Mitsubishi Electric PEFY-P100VMM-E Service Manual Download Page 14

7

TROUBLE SHOOTING

7-1. How to check the parts

Room temparature
thermistor 

(TH21)

Liquid pipe thermistor

(TH22)

Gas pipe thermistor

(TH23)

Trans

Fan motor

Linear expansion
valve

Disconnect the connector, then measure the resistance using a  tester.
(Sorrounding temperature 10

°

C~30

°

C)

Disconnect the connector and measure the resistance using a tester.

Measure the resistance between the terminals using a tester.

(at 20˚C)

Disconnect the connector then measure the resistance valve using a tester.
Refer to the next page for detail. 

(Refer to the thermistor)

Normal

4.3k

Ω

~9.6k

Ω

Abnormal

Open or short

CNT(1)-(3)

Normal

App.45

Ω

CN3T(1)-(3)

App.1

Ω

Abnormal

Open or short

Motor terminal

or

Relay connector

Normal

Abnormal

Red-Black

43.1

Ω

Open or short

White-Black

53.6

Ω

Normal

(1)-(5)

White-Red

150

Ω

±

10%

Abnormal

Open or short

(2)-(6)

Yellow-Blown

(3)-(5)

Orange-Red

(4)-(6)

Blue-Brown

1
2
3

1
2
3

CNT

T

CN3T

Red

Blue

Blue

White

1

1

3

2

5

3

Red

White

Black

Relay connector

Protector

1
2
3
4
5
6

LEV

White

Yellow

Orange

Blue

Red

Brown

CN60

Parts name

Check points

1

1

3

4

5

3

7

Black

Blue

Red

C

Gray

Blue

Gray

Orange

White

Yellow
Yellow

Relay connector

Protector

1

1

3

4

5

3

7

Black

Blue

Red

C

Gray

Blue

Gray

Orange

White

Yellow
Yellow

Relay connector

Protector

PEFY 

- P20~80VMM-E

PEFY 

- P100VMM-E

PEFY 

- P125•140VMM-E

Motor terminal

or

Relay connector

Normal

Abnormal

Orange-Gray

26.7

Ω

Open or short

Black-Gray

32.5

Ω

Yellow-Gray

37.9

Ω

Blue-Gray

42.4

Ω

Motor terminal

or

Relay connector

Normal

Abnormal

Orange-Gray

11.6

Ω

Open or short

Black-Gray

13.6

Ω

Blue-Gray

15.4

Ω

Yellow-Gray

18.1

Ω

Measure the resistance between the terminals using a tester.

(at 20˚C)

Measure the resistance between the terminals using a tester.

(at 20˚C)

13

Summary of Contents for PEFY-P100VMM-E

Page 1: ... P40VMM E PEFY P125VMM E PEFY P50VMM E PEFY P140VMM E PEFY P63VMM E 2004 Models INDOOR UNIT Ceiling Concealed Series PEFY CONTENTS SAFETY PRECAUTIONS 1 1 FEATURES 3 2 PART NAMES AND FUNCTIONS 4 3 SPECIFICATION 6 4 OUTLINES AND DIMENSIONS 8 5 WIRING DIAGRAM 10 6 REFRIGERANT SYSTEM DIAGRAM 12 7 TROUBLE SHOOTING 13 8 DISASSEMBLY PROCEDURE 18 For use with R410A R407C R22 ...

Page 2: ...fety limit from being exceeded Should the refrigerant leak and cause the safety limit to be exceeded hazards due to lack of oxygen in the room could result When moving and reinstalling the air conditioner consult the dealer or an authorized technician If the air conditioner is installed improperly water leakage elec tric shock or fire may result After completing installation work make sure that re...

Page 3: ...ge amount of mineral oil Use liquid refrigerant to fill the system If gas refrigerant is used to seal the system the composition of the refrigerant in the cylinder will change and performance may drop Do not use a refrigerant other than R410A or R407C If another refrigerant R22 etc is used the chlorine in the refrig erant may cause the refrigerator oil to deteriorate Use a vacuum pump with a rever...

Page 4: ... P63VMM E PEFY P71VMM E PEFY P80VMM E PEFY P100VMM E PEFY P125VMM E PEFY P140VMM E 2 2 2 5 2 8 3 2 3 6 4 0 4 5 5 0 5 6 6 3 7 1 8 0 8 0 9 0 9 0 10 0 11 2 12 5 14 0 16 0 16 0 18 0 FEATURES 1 Indoor unit Ceiling Concealed Series PEFY Models Cooling capacity Heating capacity kW 3 ...

Page 5: ...n 6 Fan speed adjustment Button Air inlet Air outlet In case of rear inlet In case of bottom inlet 7 Up down airflow direction Button 8 Ventilation Button 9 Checking built in Button 0 Test run Button A Filter Button B ON OFF Button C Position of built in room temperature sensor Once the controls are set the same operation mode can be repeated by simply pressing the ON OFF button Never expose the r...

Page 6: ...urrent time Timer B Centralized control C Timer ON D Abnormality occurs E Operation mode COOL DRY AUTO FAN HEAT F Preparing for Heating mode G Defrost mode H Set temperature I Power ON J Louver K Not available function L Ventilation M Function setting mode N Test run mode O Error check mode P Filter sign Q Set effective for 1 hr R Sensor position S Room temperature T Airflow U Fan speed 5 ...

Page 7: ... R1 External thread 4 5 5 0 5 6 6 3 2 2 2 5 2 8 3 2 0 15 0 15 0 73 0 73 815 Note 1 Note 1 Note 1 Note 1 Note 2 Note 2 27 Sirocco fan 1 6 0 7 2 8 5 10 0 12 0 14 0 12 0 14 5 17 0 Sirocco fan 2 33 295 700 935 Airflow rate Low Middle High Power source Model PEFY P71 VMM E PEFY P63 VMM E PEFY P80 VMM E PEFY P100 VMM E PEFY P125 VMM E Item Dimension Fan Motor Refrigerant pipe dimension Power consumption...

Page 8: ...erminal bed Transmission terminal bed OFF 130 C 5 ON 90 C 20 Room temperature thermistor Fan motor an motor with Inner thermostat DC12V Stepping motor drive portdimension ø5 2 0 2000pulse DC12V Steppingmotordrive port dimension ø6 4 0 2000pulse 4 pole Output 75W D104P75MW 4 pole Output 78W D10CP95MW 4 pole Output 75W D104P85MW Symbol DC12V Stepping motor drive port dimension ø3 2 0 2000pulse PEFY ...

Page 9: ...5 56 10 81 B 365 465 18 44 75 1 2 3 4 5 6 7 Refrigerant piping flare connection liquid øF copper tube HP Refrigerant piping flare connection gas øG copper tube LP Drain R1 External thread Electrical parts box Drain Pump Option Drain Pipe Option Flexible joint VP 25 I D ø32 Filter Keep duct work length 850mm or more Be sure to apply the air filter near the air inlet grille Service space 500 or more...

Page 10: ...flare connection liquid ø9 52 copper tube HP Refrigerant piping flare connection gas ø15 88 R410A outdoor unit copper tube LP ø19 05 R22 or R407C outdoor unit Drain R1 External thread Electrical parts box Drain Pump Option Drain Pipe Option Flexible joint VP25 I D ø32 Filter Keep duct work length 850mm or more Be sure to apply the air filter near the air inlet grille Service space 500 or more 81 1...

Page 11: ...on terminal bed Power source terminal bed Fuse AC250V 6 3A F FB1 2 SYMBOL EXPLANATION NAME NAME Surge absorber board S B Connector Heater Connector Humidifier Connector Remote switch CN51 Connector Centrally control Connector Remote indication CN52 Connector Vane CN23 CN24 CN25 Connector Damper CN27 CN32 Connector HA Terminal A CN41 Switch option parts SWA A B SWC A B Switch option parts SW5 A B T...

Page 12: ...LANATION NOTE 1 TB2 TB5 shown in dotted line are field work 2 Mark indicates terminal bed connector board insertion connector or fastening connector of control board F AC250V 6 3A F Ferrite core Thermistor piping temp detection Connector Vane Switch for mode selection Switch for capacity code Switch 2nd digit address set Switch connection No set Switch for mode selection Switch for model selection...

Page 13: ...r expansion valve Gas pipe Flare connection Gas pipe PEFY P20 25 32 40VMM E ø12 7 1 2F PEFY P50VMM E ø12 7 1 2F R410A ø15 88 5 8F R22 R407C ø 6 35 1 4F R410A ø 9 52 3 8F R22 R407C Liquid pipe ø6 35 1 4F Capacity Item Gas pipe ø15 88 5 8F R410A ø19 05 3 4F R22 R407C PEFY P63 71 80VMM E ø15 88 5 8F Liquid pipe ø9 52 3 8F PEFY P100 125 140VMM E ø9 52 3 8F Capacity Item 12 ...

Page 14: ... 53 6Ω Normal 1 5 White Red 150Ω 10 Abnormal Open or short 2 6 Yellow Blown 3 5 Orange Red 4 6 Blue Brown 1 2 3 1 2 3 CNT T CN3T Red Blue Blue White 1 1 3 2 5 3 Red White Black Relay connector Protector 1 2 3 4 5 6 LEV White Yellow Orange Blue Red Brown CN60 Parts name Check points 1 1 3 4 5 3 7 Black Blue Red C Gray Blue Gray Orange White Yellow Yellow Relay connector Protector 1 1 3 4 5 3 7 Blac...

Page 15: ...or TH22 Gas pipe temparature thermistor TH23 Drain sensor DS Thermistor R0 15kΩ 3 Fixed number of B 3480kΩ 2 Rt 15exp 3480 0 C 15kΩ 10 C 9 6kΩ 20 C 6 3kΩ 25 C 5 2kΩ 30 C 4 3kΩ 40 C 3 0kΩ Thermistor for lower temperature Linear expansion valve Operation summary of the linear expansion valve Linear expansion valve open close through stepping motor after receiving the pulse signal from the indoor con...

Page 16: ...ed all the way It is not necessary to exchange the linear expansion valve if the leakage is small and not making any trouble Thermistor TH21 Linear expansion valve Motor will idle and make ticking noise when motor is operated while the linear expansion valve is locked This ticking sound is the sign of the abnormality Check the color of lead wire and missing terminal of the con nector Exchange the ...

Page 17: ...fective Effective ON OFF 1 2 3 4 ON OFF 1 2 3 4 5 6 ON OFF 1 2 3 4 5 6 MODELS SW2 MODELS SW2 MODELS SW2 PEFY P20VMM E PEFY P25VMM E PEFY P40VMM E PEFY P50VMM E PEFY P80VMM E Address board Indoor controller board Indoor controller board Indoor controller board At delivery SW4 Unit Selection SW3 Function Selection SW2 Capacity code setting SW1 Mode Selection Switch Pole Function Built in remote cont...

Page 18: ...ng should be done when network remote controller PAR F25MA is being used This is the switch to be used when the indoor unit is operated with R2 series outdoor unit as a set Address board 2 SW5 Voltage Selection If the unit is used in the 230V or 240V range set the voltage to 240V If the unit is being used in a 220V area set the voltage to 220V Address can be set while the unit is stopped Note 1 No...

Page 19: ...s two fixing screws A and remove the the covers three fixing screws B and remove the cover cover 8 1 CONTROL BOX Be careful on removing heavy parts fig 1 fig 2 8 2 THERMISTOR Liquid piping temperature detection OPERATING PROCEDURE PHOTOS 1 Removing the pipe fixing cover 1 Remove 2 Removing the thermistor 1 Remove the thermistor from the thermistor holder which is installed on the copper tube fig 1...

Page 20: ...arts fig 1 fig 2 View from the opposite side 8 4 DRAINPAN OPERATING PROCEDURE PHOTOS 1 Removing the drainpan 1 Remove the drainpan E fixing screw 2 Slide the drainpan in the direction of the arrow1 and remove in the direction of the arrow2 Note The bottom plate can remain in position during this procedure fig 1 fig 2 2 Re fit 1 Re fit in reverse order 2 Re fit 1 Re fit in reverse order 19 C D C D ...

Page 21: ...nd FAN MOTOR OPERATING PROCEDURE PHOTOS 1 Removing the bottom plate 1 I 1 Remove the fixing screws eight of the bottom plate 1 I and remove plate 2 Sliding the fan section 1 Remove the fan motor cable connector in control box 2 Remove the fixing screws four of the fan base plate 3 Slide the fan section in direction of the arrow1 fig 1 fig 2 Note The bottom plate and drain pan can remain in positio...

Page 22: ... PROCEDURE PHOTOS 1 Remove the drainpan with procedure 8 4 2 Remove the bottom plate 2 with procedure 8 5 3 Removing Heat exchanger 1 Remove the fixing screws four of the heat exchanger M and remove the heat exchanger fig 1 fig 2 Remove the motor clamps L two clamps secure the motor capacitor cable K 2 on each side over the rubber bushing 5 Re assemble 1 Re assemble in reverse order Note Piping pi...

Page 23: ......

Page 24: ...in April 2004 MEE03K223 Printed in Japan New publication effective April 2004 Specifications subject to change without notice HEAD OFFICE MITSUBISHI DENKI BLDG 2 2 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN ...

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