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Mitsubishi Electric PCFY Series, Technical & Service Manual

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Mitsubishi Electric PCFY Series Technical & Service Manual Download Page 15

TROUBLE SHOOTING

7

15

7-1. How to check the parts 

PCFY-P40VGM-A , PCFY-P63VGM-A , PCFY-P100VGM-A , PCFY-P125VGM-A

Parts name

Check points

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

:

~30

:

)

Disconnect the connector then measure the resistance valve using a tester.

Measure the resistance between the terminals using a tester.
(Surrounding temperature 20

:

~30

:

)

Measure the resistance after 3 minutes have passed since the power supply was intercepted.
(Surrounding temperature 0

:

~60

:

)

Linear expansion
valve

Drain-up machine
(Optional)

Drain sensor
(Optional)

(Refer to the next page for a detail.)

Room temperature
thermistor       (TH21)

Liquid pipe temperature 
thermistor       (TH22)

Gas pipe temperature 
thermistor       (TH23)

1

3

Gray

Gray

1
2

3

Normal

4.3k

"

~9.6k

"

Abnormal

Open or short

Abnormal

Open or short

Normal

0.6k

"

~6.0k

"

Abnormal

Open or short

Normal

150k

"

 

i

10%

(1)-(5)

White-Red

(2)-(6)

Yellow-Brown

(3)-(5)

Orange-Red

(4)-(6)

Blue-Brown

Normal

Abnormal

92

"

Open or short

Orange

Red

White

Blue

Brown

Yellow

3

6

1

5

4

2

M

Measure the resistance between the terminals using a tester.

Fan motor

1

1

3

3

5

5

Red

White

Black

Relay connector

Protector

P40VGM-A

70.6

"

69.6

"

P63VGM-A

45.0

"

44.8

"

P100VGM-A

43.7

"

53.3

"

P125VGM-A

20.4

"

20.7

"

Abnormal

Open or short

Red-Black

White-Black

Motor terminal

or

Relay connector

Normal

PCFY-

Measure the resistance between the terminals using a tester.
(Surrounding temperature 20

:

~30

:

)

Vane motor

Normal

PCFY-P40VGM-A PCFY-P63VGM-A

Connector

Abnormal

186~214

"

140~160

"

Open or short

Brown — Yellow

Brown — Blue

Brown — Orange

Brown — Pink

Normal

PCFY-P100VGM-A, PCFY-P125VGM-A

Connector

Abnormal

140~160

"

Open or short

Red — Blue

Red —Yellow 

Red — Pink

Red — Orange

(Refer to the next 
 page for a detail.)

Blue

Yellow Brown

Orange

Red

Pink

2

3

Yellow

3

4

5

Orange

Red

Pink

2

4

5

6 1

Blue

1

Connector
Pin No.

Connector
Pin No.

M

M

OC249.qxp  3/8/01 4:37 PM  Page 15

Summary of Contents for PCFY Series

Page 1: ...G DIAGRAM 13 6 REFRIGERANT SYSTEM DIAGRAM 14 7 TROUBLE SHOOTING 15 8 DISASSEMBLY PROCEDURE 20 9 PARTS LIST 24 10 OPTIONAL PARTS 31 PCFY P40VGM A PCFY P40VGM A PCFY P63VGM A PCFY P63VGM A PCFY P100VGM A PCFY P100VGM A PCFY P125VGM A PCFY P125VGM A No OC249 INDOOR UNIT Ceiling Suspended Series PCFY R407C R22 2001 Indoor unit Model name Service Ref OC249 qxp 3 8 01 4 37 PM Page 1 ...

Page 2: ...brazing Store elbows and other joints in a plastic bag If dust dirt or water enters the refrigerant cycle deterioration of the oil and compressor trouble may result Use ESTR ETHER or HAB as the lubricant to coat flares and flange connection parts Use liquid refrigerant to seal the system If gas refrigerant is used to seal the system the composition of the refrigerant in the cylinder will change an...

Page 3: ...ol name Specifications 1 Gauge manifold Only for R407C Use the existing fitting SPECIFICATIONS UNF7 16 Use high tension side pressure of 3 43MPa G or over 2 Charge hose Only for R407C Use pressure performance of 5 10MPa G or over 3 Electronic scale 4 Gas leak detector Use the detector for R134a or R407C 5 Adapter for reverse flow check Attach on vacuum pump 6 Refrigerant charge base 7 Refrigerant ...

Page 4: ...ectronic dry dehumidify automatic and heater modes OPERATION SWITCH button This sets the room temperature The temperature setting can be performed in 1 units Setting range Cooler 19 to 30 Heater 17 to 28 TEMP ADJUSTMENT button This switches between continuous operation and the timer operation TIMER button This switches between the operation and stop modes each time it is pressed The lamp on this b...

Page 5: ...n a malfunction has occurred in the unit which should be checked CLOCK display The current time start time and stop time can be displayed in ten second intervals by pressing the time switch button The start time or stop time is always displayed during the timer operation Display In this display example on the bot tom left a condition where all dis play lamps light is shown for expla nation purpose...

Page 6: ...g capacity F a n Dimensions Height Width Depth Electric characteristic Input Cooling Heating Cooling Heating Current PCFY P40VGM A PCFY P63VGM A PCFY P100VGM A PCFY P125VGM A Single phase 220 230 240V 50Hz 220V 60Hz 4 5 5 0 0 10 0 10 0 46 0 46 7 1 8 0 0 13 0 13 0 60 0 60 11 2 12 5 0 16 0 16 0 73 0 73 14 0 16 0 0 24 0 24 1 10 1 10 1310 18 16 14 12 0 07 15 88 5 8 9 52 3 8 39 37 34 32 34 Unit Munsell...

Page 7: ...pacitor Vane motor Linear expansion valve PCFY P40VGM A PCFY P63VGM A PCFY P100VGM A PCFY P125VGM A Room temperature thermistor Liquid pipe temperature thermistor Gas pipe temperature thermistor Fuse Indoor controller board Fan motor with inner thermostat Power supply terminal block Transmission terminal block MA remote controller terminal block DC12V Stepping motor drive 3 2 0 2000pulse 4 Pole Ou...

Page 8: ... A Hi NOTCH Mi1 Mi2 Lo 37 SPL dB 36 34 32 LINE 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 002 MICRO BAR BAND CENTER FREQUENCIES Hz PCFY P100VGM A Hi NOTCH Mi1 Mi2 Lo 39 SPL dB 37 35 33 LINE 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 800...

Page 9: ...nage pipe connection 26mm I D 5 Refrigerant pipe connection liquid pipe side flared connection 2 Drainage pipe connection for the left arrangement 6 Knock out hole for upper drain pipe arrangement 3 Knock out hole for left drain piping arrangement 7 Knock out hole for left drain pipe arrangement 4 Refrigerant pipe connection gas pipe side flared connection 8 Knock out hole for wiring arrangement N...

Page 10: ...tion 26mm I D 5 Refrigerant pipe connection liquid pipe side flared connection 2 Drainage pipe connection for the left arrangement 6 Knock out hole for upper drain pipe arrangement 3 Knock out hole for left drain piping arrangement 7 Knock out hole for left drain pipe arrangement 4 Refrigerant pipe connection gas pipe side flared connection 8 Knock out hole for wiring arrangement NOTES 1 Use M10 o...

Page 11: ...n 26mm I D 5 Refrigerant pipe connection liquid pipe side flared connection 2 Drainage pipe connection for the left arrangement 6 Knock out hole for upper drain pipe arrangement 3 Knock out hole for left drain piping arrangement 7 Knock out hole for left drain pipe arrangement 4 Refrigerant pipe connection gas pipe side flared connection 8 Knock out hole for wiring arrangement NOTES 1 Use M10 or W...

Page 12: ...on 26mm I D 5 Refrigerant pipe connection liquid pipe side flared connection 2 Drainage pipe connection for the left arrangement 6 Knock out hole for upper drain pipe arrangement 3 Knock out hole for left drain piping arrangement 7 Knock out hole for left drain pipe arrangement 4 Refrigerant pipe connection gas pipe side flared connection 8 Knock out hole for wiring arrangement NOTES 1 Use M10 or ...

Page 13: ...indication Centrally control Remote switch Legend I B Indoor controller board Connector CN32 CN51 CN52 Switch SW2 SW3 SW4 CNP Voltage selection Address setting 2nd digit Connection No Address setting 1st digit Mode selection Address Power supply Vane motor Circuit board Switch Terminal block SW5 A B SW1 SW11 SW12 SW14 TB2 MV Capacitor fan motor C1 FUSE 6 3A Pipe temperature detection Gas Pipe temp...

Page 14: ...ermistor TH23 Liquid pipe temperature thermistor TH22 Linear expansion valve Gas pipe Liquid pipe Flare connection Gas pipe PCFY P40VGM A 12 7 1 2 PCFY P63VGM A 15 88 5 8 PCFY P100VGM A PCFY P125VGM A 19 05 3 4 Liquid pipe 6 35 1 4 9 52 3 8 9 52 3 8 Capacity Item PCFY P40VGM A PCFY P63VGM A PCFY P100VGM A PCFY P125VGM A OC249 qxp 3 8 01 4 37 PM Page 14 ...

Page 15: ...k 6 0k Abnormal Open or short Normal 150k i10 1 5 White Red 2 6 Yellow Brown 3 5 Orange Red 4 6 Blue Brown Normal Abnormal 92 Open or short Orange Red White Blue Brown Yellow 3 6 1 5 4 2 M Measure the resistance between the terminals using a tester Fan motor 1 1 3 3 5 5 Red White Black Relay connector Protector P40VGM A 70 6 69 6 P63VGM A 45 0 44 8 P100VGM A 43 7 53 3 P125VGM A 20 4 20 7 Abnormal ...

Page 16: ...pansion valve open close through stepping motor after receiving the pulse signal from the indoor controller board Valve opening can be changed in proportion to the number of pulse signal Connection between the indoor controller board and the linear expansion valve 4 4 3 6 2 5 3 2 2 1 1 4 3 2 1 Controller board Drive circuit Relay connector Connector CN60 DC12V Brown Red Blue Orange Yellow White 5 ...

Page 17: ...res Exchange the indoor con troller board at drive circuit failure Linear expansion valve mechanism is locked Valve doesn t close completely thermis tor leaking Wrong connection of the connector or contact failure To check the linear expansion valve operate the indoor unit in fan mode and at the same time operate other indoor units in cooling mode then check the pipe temperature liquid pipe temper...

Page 18: ... effective Heater 4degrees up Not effective Effective Target Superheat setting w5 9degrees 6degrees Target Subcool setting 15degrees 10degrees ON OFF ON OFF 1 2 3 4 5 1 2 3 4 5 ON OFF 1 2 3 4 5 6 7 8 9 10 ON OFF 1 2 3 4 5 6 7 8 9 10 ON OFF 1 2 3 4 5 6 ON OFF 1 2 3 4 5 6 ON OFF 1 2 3 4 5 6 ON OFF 1 2 3 4 5 6 MODELS SW2 MODELS SW2 MODELS SW2 PCFY P40VGM A PCFY P63VGM A PCFY P100VGM A PCFY P125VGM A ...

Page 19: ...igit address setting Rotary switch SW14 Connection No setting Rotary switch When the optional high performance filter ele ments filter casement is attached to the unit be sure to set switch to the option side in order to prevent the airflow reducing Address setting should be done when M NET remote controller is being used This is the switch to be used when the indoor unit is operated with R2 serie...

Page 20: ...nsion valve CN60 Room temperature thermistor CN20 Liquid pipe temperature thermistor CN21 Gas pipe temperature thermistor CN29 5 Remove the screws from the electrical box and pull out the electrical box Electrical parts in the electrical box Terminal block for power supply Terminal block for transmission Terminal block for MA remote controller Indoor control board Address board Power board Capacit...

Page 21: ... motor guard 4 Unscrew screws for removing the fan guard 5 Remove the lower casing while pressing the stoppers at upper side of the casing 6 Loosen the set screws at the connecting joint 7 Remove the sirocco fan and shaft together by sliding the shaft to the left Note Make sure that the upper side casing is snapped to the fan plate securely with catch 5 Removing the side panel 1 Remove the air int...

Page 22: ... the air intake grille 2 Remove the beam 3 Remove the side panel right and left 4 Unscrew the screws of the under panel then remove the lower panel Weight of the lower panel Approx 2kg 6 Removing the vane motor 1 Remove the air intake 2 Remove the left side panel 3 Remove the relay connector of vane motor 4 Remove the electrical box 5 Remove the screws of vane motor then remove vane motor Note Con...

Page 23: ...e the drain pan 11 Removing the Auto vane 1 Remove the intake grille 2 Remove the left side panel 3 Remove the left side box 4 Remove the under panel 5 Remove the screw from the auto vane 6 Slide the auto vane to the right side and pull the auto vane out Photo 8 Screw Screw Screw Guide vane Auto vane Drain pan Screw Drain pan Screws Insulation Photo 9 Photo 10 10 Removing the guide vane 1 Remove t...

Page 24: ...L BOX ADDRESS BOARD ADDRESS CABLE POWER BOARD BOX COVER BOX COVER BOX COVER REMOTE CONTROLLER 3 440V 4 440V 6 440V 250V 6 3A 3P L N 3P M1 M2 S 2P 1 2 PAR 20MAA 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 BG00N015G21 BG02A804G20 BG02A804G21 BG02A804G22 C1 C1 C1 I B TB2 TB5 TB15 A B P B 11 5 9 8 7 12 1 ELECTRICAL PARTS PCFY P40VGM A PCFY P63VGM A P...

Page 25: ...J 691 R01 17J 054 R01 A14 500 R01 17J 669 T7W E00 070 T7W B06 665 R01 17J 808 R01 17J 668 R01 17J 661 R01 17J 067 R01 17J 085 R01 17J 651 R01 17J 002 R01 18J 086 R01 17J 676 R01 17J 068 R01 29J 223 R01 17J 809 R01 17J 662 R01 17J 523 S PLATE L L L FILTER GRILLE HINGE GRILLE ASSY GRILLE ASSY GRILLE CATCH L L FILTER REAR SUPPORT UNDER PANEL BEAM GA W BOARD CASE S PLATE R RIGHT LEG R SERVICE PANEL RI...

Page 26: ...68 R01 18J 668 R01 17J 067 R01 35J 067 R01 29J 651 R01 36J 651 R01 29J 002 R01 35J 002 R01 17J 085 R01 37J 085 R01 29J 087 R01 37J 087 R01 18J 086 R01 37J 086 R01 17J 068 R01 35J 068 R01 29J 223 R01 35J 223 R01 17J 523 BG02H454G01 BG17H464H08 BG02R321G07 BG02R805G05 LEFT SIDE PANEL LEFT SIDE PANEL LEFT LEG S PLATE L S PLATE L REAR PANEL REAR PANEL GRILLE HINGE GRILLE CATCH GRILLE ASSY L L FILTER U...

Page 27: ...J 669 T7W E00 070 R01 35J 661 R01 17J 808 R01 18J 668 R01 35J 067 T7W B07 665 R01 41J 651 R01 41J 002 R01 41J 085 R01 43J 087 R01 42J 086 R01 35J 068 R01 35J 223 R01 17J 809 R01 17J 523 LEFT SIDE PANEL S PLATE L REAR PANEL L L FILTER GRILLE HINGE GRILLE ASSY GRILLE CATCH GRILLE ASSY L L FILTER UNDER PANEL W BOARD CASE REAR SUPPORT BEAM GA RIGHT SIDE PANEL RIGHT LEG SERVICE PANEL RIGHT SIDE BOX S P...

Page 28: ...2 R01 17J 524 T7W 17J 675 R01 17J 529 T7W 18J 675 R01 E27 202 R01 P21 401 R01 17J 202 R01 77W 480 T7W E00 072 MOTOR LEG CASING SIROCCO FAN FAN GUARD ROOM TEMPERATURE THERMISTOR PIECE MOTOR FAN MOTOR DRAIN PLUG FAN GUARD DRAIN PAN ASSY FAN GUARD LIQUID PIPE TEMPERATURE THERMISTOR LINEAR EXPANSION VALVE GAS PIPE TEMPERATURE THERMISTOR HEAT EXCHANGER DRAIN HOSE COVER Part number that is circled is no...

Page 29: ...W 24J 675 T7W B06 110 T7W B07 110 R01 33J 114 R01 39J 114 R01 E27 202 R01 P21 401 R01 P25 401 R01 17J 202 R01 81W 480 R01 87W 480 T7W E00 072 MOTOR LEG MOTOR LEG PIECE MOTOR FAN MOTOR FAN MOTOR FAN JOINT SIROCCO FAN SIROCCO FAN FAN GUARD FAN GUARD ROOM TEMPERATURE THERMISTOR SHAFT FAN GUARD FAN GUARD SLEEVE BEARING BEARING SUPPORT BEARING SUPPORT DRAIN PLUG DRAIN PAN ASSY DRAIN PAN ASSY FAN GUARD ...

Page 30: ... R01 17J 524 T7W 24J 675 T7W B07 110 R01 705 103 R01 35J 145 R01 E27 202 R01 P25 401 R01 17J 202 R01 89W 480 T7W E00 072 SHAFT MOTOR LEG PIECE MOTOR SIROCCO FAN ROOM TEMPERATURE THERMISTOR FAN GUARD FAN GUARD FAN MOTOR SIROCCO FAN DRAIN PAN ASSY FAN JOINT FAN GUARD SIROCCO FAN DRAIN PLUG FAN GUARD CASING SLEEVE BEARING BEARING SUPPORT LIQUID PIPE TEMPERATURE THERMISTOR LINEAR EXPANSION VALVE GAS P...

Page 31: ...40VGM A PCFY P63VGM A PCFY P100VGM A PCFY P125VGM A PAC SE84DMA E PAC SE85DMA E PAC SE86DMA E Part No Applied Service Ref PCFY P40VGM A PCFY P63VGM A PCFY P100VGM A PCFY P125VGM A PAC SE80KF E PAC SE81KF E PAC SE82KF E 10 2 HIGH EFFICIENCY FILTER OC249 qxp 3 8 01 4 38 PM Page 31 ...

Page 32: ...IYODA KU TOKYO100 8310 JAPAN cCopyright 2001 MITSUBISHI ELECTRIC ENGINEERING CO LTD Distributed in Mar 2001 No OC249 PDF 810 Made in Japan New publication effective Mar 2001 Specifications subject to change without notice OC249 qxp 3 8 01 4 38 PM Page 32 ...

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