Mitsubishi PKH-2.5FKA1-E, PKH-3FKA1-E, PKH-4FKSA1-E Service Manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

TECHNICAL & SERVICE MANUAL

2001

No.OC271

Wall MountedSeries PKH

Indoor unit
[Model names] [Service Ref.]

PKH-2.5FKA PKH-2.5FKA1-E
PKH-3FKA PKH-3FKA1-E
PKH-4FKSA PKH-4FKSA1-E

CONTENTS

1. TECHNICAL CHANGES·······················2

2. TROUBLESHOOTING··························3

3. PARTS LIST··········································4

This service manual describes
change points and parts list.
Please refer to the OC190 as
to excluding this manual.

INDOOR UNIT

FILTER
CHECK MODE
TEST RUN

REMOTE CONTROLLER

1 TECHNICAL CHANGES

PKH-2.5FKA-E ➔ PKH-2.5FKA1-E

PKH-3FKA-E ➔ PKH-3FKA
PKH-4FKSA-E ➔ PKH-4FKSA1-E

● NOSE has changed by changing its shape.

● UNDER PLATE has changed by changing its shape.

● DRAIN PAN has changed by changing its shape.

● BOX ASSEMBLY has changed by changing its shape.

1-E

2

2 TROUBLESHOOTING

0

10

20

30

40

50

-20 -10 0 10 20 30 40 50

< Thermistor for lower temperature >

Temperature (:)

Resistance (K")

• How to check the parts PKH-2.5FKA1-E, PKH-3FKA1-E, PKH-4FKSA1-E

Parts name Check points

Room temperature
thermistor (RT1)
Pipe temperature
thermistor (RT2)

Disconnect the connector, then measure the resistance using a tester.
(Surrounding temperature 10°C~30°C)

Normal

4.3k'~9.6k'

Abnormal

Open or short

Trans

CNT T CN4T

WHT

1
2
3

YLW

BRN

RED

Fan motor

Relay connector

1

White

3

5

Black

Protector

Vane motor

Orange

4

Red

5

Pink

2

Yellow

Connector

3 6 1

1
2
3
4

Red

M

Brown

1
3
5

Blue

Disconnect the connector and measure the resistance using a tester.

Normal

CNT(1)-(3)
CN4T(1)-(2)

CN4T(3)-(4)

Measure the resistance between the terminals using a tester.

WHT. Approx. 135'

BRN. Approx. 0.5~2.0'

RED. Approx. 1.0~2.0'

Abnormal

Open or short

Normal

Motor terminal

or

Relay connector

Red-White

White-Black

Measure the resistance between the terminals using a tester.
(Surrounding temperature 20°C~30°C)

2.5, 3FKA-E

2.5, 3FKA1-E

99.5'i10%

103.5'i10%

Normal

PKH-

4FKSA-E
4FKSA1-E

62.6'i10%

74.0'i10%

Abnormal

Abnormal

Open or short

Brown-Yellow

Brown-Blue

Red-Orange

186~214'

Open or short

Red-Pink

<Thermistor Characteristic graph>

Thermistor for
lower temperature

Thermistor R0=15k' ±3%
Fixed number of B=3480k' ±2%

Rt=15exp { 3480( ) }

0: 15k'
10: 9.6k'
20: 6.3k'
25: 5.4k'
30: 4.3k'
40: 3.0k'

Room temperature thermistor(RT1)
Pipe temperature thermistor(RT2)

1

273+t

1

273

3

3 PARTS LIST

Part No.

Specification

No.

Wiring

Diagram

Symbol

Recom-

mended

Q,ty

Price

Unit

Amount

Remarks

(

Drawing No.

)

Q,ty/set

PKH-2.5

PKH-4PKH-3

FKA-E

R01 12G 220
T7W 571 762
R01 12G 105
R01 16G 105

—
—
—

—
R01 13G 115
R01 17G 115
R01 13G 114
R01 17G 114
R01 005 103
R01 12G 103

Part Name

1

2

1
1
1

1

1

1
1

FKA1-E

FKA-E

FKA1-E

FKSA-E

FKSA1-E

1

2

1
1
1

1

1

1
1

1

2

3
4

5

6

7

8
9

1

2

1
1
1

1

1

1
1

1

2

1
1
1

1

1

1
1

1

2
1
1

1

1

1
1
1

1

2
1
1

1

1

1
1
1

MF
MF

(

BG02H065H01

)

(

BG02H178H01

)

(

BG02A534H16

)

(

BG02A534H17

)

D10A4P70MS

FAN MOTOR
FAN MOTOR
RUBBER MOUNT
RUBBER MOUNT
MOTOR BAND
MOTOR BAND
MOTOR LEG
MOTOR LEG
RIGHT LINEFLOW FAN
RIGHT LINEFLOW FAN
LEFT LINEFLOW FAN
LEFT LINEFLOW FAN
SLEEVE BEARING
SLEEVE BEARING

FILTER
CHECK MODE
TEST RUN

ELECTRICAL PARTS
PKH-2.5FKA-E PKH-3FKA-E PKH-4FKSA-E
PKH-2.5FKA1-E PKH-3FKA1-E PKH-4FKSA1-E

10

22

14

16

19

8

37·38

34

39

5

7

11

9

12

13

6

1

3

31
25

26

18

17

16

4

2

35
28
27

322033

29

21

15 36

4

30 23 24

Part No.

No.

Price

Remarks

(

Drawing No.

)

Q,ty/set

PKH-2.5

PKH-3 PKH-4

FKA-E FKA-E

FKSA-E

R01 Z61 102
R01 KV5 102

—

—
R01 12G 529
T7W E13 529
R01 16G 529
T7W E14 529
R01 12G 223

—

—

—
R01 12G 002
R01 16G 002
R01 12G 621
R01 12G 063
R01 KV5 527
T7W 585 480
T7W 587 480
T7W 589 480
T7W 71J 310
T7W 520 239

—

—
T7W 509 716
T7W 517 716

—
R01 588 255
R01 576 255
T7W 50J 799
R01 06A 202
R01 22A 202
T7W 53J 200
T7W 512 716
T7W 556 305
T7W 53J 675
T7W 71J 675
R01 08K 049

Part Name

Specification

250V 6.3A

3P(L/N/;)
3P(1/2/3)

2.0µF 440V

3.0µF 440V

2P(1/2)
12m

1
1
1
1
1

1

20

4
3
2

1
1
1
1

1
2
1
1
1
1
1
1

1
1
1
1
1
1
2

1

10
11
12
13

14

15

16

17

18

19
20
21

22

23
24
25
26
27
28
29

30

31
32
33
34
35
36
37
38
39

1
1
1
1
1

1

20

4

3
2

1
1
1

1

1
2
1
1
1
1
1
1

1
1
1
1
1
1
2

1

1
1
1
1

1

1

26

4
4

2
1
1
1

1
1
2
1
1
1
1
1

1
1
1
1
1
1
1

2
1

FKA1-E FKA1-E

FKSA1-E

1
1
1
1

1

1

20

4
3
2

1
1
1
1

1
2
1
1
1
1
1
1

1
1
1
1
1
1
2

1

1
1
1
1

1

1

20

4

3
2

1
1
1

1

1
2
1
1
1
1
1
1

1
1
1
1
1
1
2

1

1
1
1
1

1
1

26

4
4

2
1
1
1

1
1
2
1
1
1
1
1

1
1
1
1
1
1
1

2
1

MV

I.B

F1.2<I.B>

TB2
TB4

C
C

T
RT1
RT2

R.B

TB5

(

BG02L462H02

)

(

BG00R259G07

)

(

BG25J821H02

)

(

BG25J821H02

)

(

BG00R259G07

)

(

BG25B573H06

)

(

BG02A648G02

)

(

BG02J608H07

)

Wiring

Diagram

Symbol

Recom­mended

Q,ty

Unit

Amount

BEARING MOUNT
BEARING MOUNT
BEARING BAND
CENTER SUPPORT
DRAIN PAN
DRAIN PAN
DRAIN PAN
DRAIN PAN
VANE MOTOR
GUIDE VANE
GUIDE VANE(WITH HANDLE)
ARM
AUTO VANE
AUTO VANE
CENTER COVER
JOINT SHAFT
DRAIN HOSE
HEAT EXCHANGER
HEAT EXCHANGER
HEAT EXCHANGER
INDOOR CONTROLLER BOARD
FUSE
CONTROLLER CASE
CONTROLLER COVER
TERMINAL BLOCK
TERMINAL BLOCK
TERMINAL COVER
FAN MOTOR CAPACITOR
FAN MOTOR CAPACITOR
TRANSFORMER
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR
REMOTE CONTROLLER BOARD
TERMINAL BLOCK
REMOTE CONTROLLER CABLE
FAN GUARD
FAN GUARD
REMOTE CONTROLLER COVER

5

Part No.

No.

Price

Remarks

(

Drawing No.

)

R01 12G 661
R01 12G 662
R01 12G 691
R01 16G 692
R01 A17 500
R01 12G 811
R01 E00 811
R01 16G 811
R01 E01 811
R01 E01 812
R01 E00 812
T7W E01 641
T7W E00 641
R01 12G 523
R01 12G 808
R01 16G 808

—
—
—
—

Part Name

Specification

Q,ty/set

PKH-2.5 PKH-3 PKH-4

FKA-E FKA-E

FKSA-E

1
1
2

4
1

1

1

1
1

1

FKA1-E

1
1
2

4

1

1

1

1
1

1

1
2
3
4
5

6

7

8

9

10

11

1
1
2

4
1

1

1

1
1

1

FKA1-E

1
1
2

4

1

1

1

1
1

1

1
1
2
1
5

1

1

1
1

1

1

FKSA1-E

1
1
2
1
5

1

1

1
1

1

1

(BG00A593GM3)
(RG00A734G29)
(BG00A593GM4)
(RG00A734G30)

Wiring

Diagram

Symbol

Recom­mended

Q,ty

Unit

Amount

RIGHT SIDE PANEL
LEFT SIDE PANEL
INTAKE GRILLE
INTAKE GRILLE
AIR FILTER
NOSE
NOSE
NOSE
NOSE
UNDER PLATE
UNDER PLATE
TOP PLATE
TOP PLATE
DRAIN SOKET
BACK PLATE
BACK PLATE
BOX ASSEMBLY
BOX ASSEMBLY
BOX ASSEMBLY
BOX ASSEMBLY

STRUCTURAL PARTS
PKH-2.5FKA-E PKH-3FKA-E PKH-4FKSA-E
PKH-2.5FKA1-E PKH-3FKA1-E PKH-4FKSA1-E

11

108

2

7

6

3

5

Part number that is circled is not shown in the figure.

6

1

HEAD OFFICE : MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN

cCopyright 2001 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD
Distributed in Sep. 2001. No.OC271 660
Made in Japan

New publication, effective Sep. 2001.

Specifications subject to change without notice