Friedrich MR24Y3F, MW24Y3F, MR24C3F Service Manual

SPLIT TYPE
ROOM AIR CONDITIONER

WALL MOUNTED

Models

Indoor unit Outdoor unit

MW24C3F MR24C3F
MW24Y3F MR24Y3F

type

CONTENTS

SPECIFICATIONS ................... 1

DIMENSIONS ....................... 2

REFRIGERANT SYSTEM DIAGRAM .... 3

CIRCUIT DIAGRAM ................. 4

5INDOOR PCB CIRCUIT DIAGRAM .....

8OUTDOOR PCB CIRCUIT DIAGRAM . . .

ERROR CONTENTS ................

DISASSEMBLY ILLUSTRATION ....... 14

PARTS LIST ....................... 20

STANDARD ACCESSORIES

..........

13

22

SPECIFICATIONS

INDOOR UNIT

OUTDOOR UNIT

COOLING CAPACITY

HEATING CAPACITY

MW24C3F MW24Y3F

MR24C3F MR24Y3F

24,200 BTU/hr 24,200 BTU/hr

- 27,600 BTU/hr

NOISE LEVEL

INDOOR UNIT

HIGH

MED

LOW

QUIET

47 dB

41 dB

36 dB

32 dB

C47dB / H45dB

C41dB / H41dB

C36dB / H36dB

C32dB / H32dB

ELECTRICAL DATA

POWER SOURCE

FREQUENCY

COOLING

RUNNING CURRENT

HEATING

COOLING

INPUT WATTS

HEATING

SEER

MOISTURE REMOVAL

AIR CIRCULATION -High

COMPRESSOR

TYPE

208 V / 230 V 208 V / 230 V

60Hz 60Hz

10.1 A 10.1 A

- 10.8 A

2,310 W

- 2,470 W

18.0 18.0

6.3 Pts/hr
(3.0 L/hr)

647 cfm

(1,100 m

3

/hr)

Hermetic motor compressor,

4 poles, Involute scroll type

2,310 W

6.3 Pts/hr
(3.0 L/hr)

647 cfm

(1,100 m3/hr)

OUTDOOR UNIT

52 dB

C52dB / H53dB

REFRIGERANT CHARGE (R410A)

Pipe Length

FULL CHARGE
AMOUNT

ADDITIONAL CHARGE

15 m

20 m

25 m

30 m

3 lb. 8 oz. (1,600 g)

3 lb. 12 oz. (1,700 g)

3 lb. 15 oz. (1,800 g)

4 lb. 3 oz. (1,900 g)

0.2 oz./ft. (20g/m)

DISCRIMINATION

POWER SOURCE

REFRIGERANT R410A

FAN MOTOR

POWER SOURCE

INDOOR UNIT

OUTDOOR UNIT

DIMENSIONS

INDOOR UNIT HxWxD

OUTDOOR UNIT

HxWxD

HIGH

MED

LOW

QUIET

COOL

HEAT

5CS160 XAA23

208 V / 230 V 60Hz

3 lb. 8 oz ( 1,600 g )

208 V / 230 V

1,310 r.p.m.

1,120 r.p.m.

940 r.p.m.

830 r.p.m.

1,000 r.p.m.

-

12-5/8 x 39-1/4 x 9 inch

320 x 998 x 228 mm

22-3/4 x 31-1/8 x 12-3/8 inch

578 x 790 x 315 mm

1,000 r.p.m.

1,050 r.p.m.

WEIGHT

INDOOR UNIT

OUTDOOR UNIT

Gross / Net

Gross / Net

2006.03.14 1

40 / 31 lbs. (18 / 14 kg )

106 / 97 lbs. (48 / 44 kg )

OUTLINE AND DIMENSIONS

Unit : inch (mm)

INDOOR UNIT

12-5/8"

(320)

OUTDOOR UNIT

39-1/4" (998)

13-11/16" (347)

1-7/8" (48)

23-1/4" (540)

31-1/8" (790)

20" (508)

3/4" (20)

9" (228)

12-5/8" (320)

4-15/16" (125)

2-3/8"
(60)

11-13/16" (300)

2006.02.23

22-3/4" (578)

3/8"

(10)

2

REFRIGERANT SYSTEM DIAGRAM

Models :

Muffler

MW24C3F / MR24C3F
MW24Y3F / MR24Y3F

3-Way

valve

Compressor

4-Way valve

Heat exchanger

( INDOOR )

2-Way

valve

Strainer

Sub-accumulator

Strainer

Cooling
Heating

Refrigerant pipe diameter
Liquid : 1/4" (6.35 mm)
Gas : 5/8" (15.88 mm)

Heat exchanger

( OUTDOOR )

Expansion valve

Strainer

2006.02.23 3

CIRCUIT DIAGRAM

2004.11.09 4

INDOOR PCB CIRCUIT DIAGRAM

Models :
MW24C3F
MW24Y3F

TERMINAL BOARD

N

N

OUTDOOR

UNIT

L

SERIAL

EARTH

THERMAL

L

FUSE 103

3

EARTH TERMINAL

GREEN

W4 TM2

22007

RED WHITE BLACK

TM4

TM1

22007

22007

CONTROL UNIT
MW24C3F : EZ-005CWSE
MW24Y3F : EZ-00523HSE

INDICATOR PCB ASSY

K05CY-0500HSE-D0

LOUVER
( RIGHT / LEFT )

LOUVER
( UP / DOWN )

DIFFUSER

FAN MOTOR

M

M

M

F. M .

CN2-1 RED

CN2-2 ORANGE

CN2-3 YELLOW

CN2-4 PINK

CN2-5 BLUE

CN5-1 RED

CN5-2 ORANGE

CN5-3 YELLOW

CN5-4 PINK

CN5-5 BLUE

CN8-1 RED

CN8-2 ORANGE

CN8-3 YELLOW

CN8-4 PINK

CN8-5 BLUE

CN10-6 RED

CN10-4 BLACK

CN10-3 WHITE

CN10-2 YELLOW

CN10-1 BLUE

CN6
5P-SAN

1

2

3

4

5

CN2
SJH20-05WS

1

2

3

4

5

CN5
SJH20-06WS

1

2

3

4

5

CN8
B06B-PASK

1

2

3

4

5

CN10
B06B-XARK

1

2

3

4

5

6

CONTROLLER PCB ASSY

MW24C3F : K05CX-0507WSE-C1

MW24Y3F : K05CX-0506HSE-C1

CN11

B07B-9ASK

CN3

2P-SCN

CN1

2P-SAN

CN13

B5P-SHF-1AA

CN201
JB20-07HG

1

2

3

4

5

6

7

CN11-1 RED

CN11-2 WHITE

CN11-3 WHITE

CN11-4 WHITE

CN11-5 WHITE

CN11-6 WHITE

CN11-7 WHITE

1

2

3

4

5

6

7

PIPE TEMPERATURE THERMISTOR

BLACK

CN3-1

1

CN3-2 BLACK

2

ROOM TEMPERATURE THERMISTOR

CN1-1 BLACK

1

CN1-2 BLACK

2

CN13-1

1

2

CN13-2

3

CN13-1

CN13-1

4

CN13-1

5

TEST

2006.02.23 5

Models :
MW24C3F
MW24Y3F

ROOM TEMPERATURE

PIPE TEMPERATURE

REMOTE CONTROL UNIT

1

3

<RED>
<WHITE>

<BLACK>

JP SWITCHING

K1-4

T1-12

TM4

C19
330/
25V

CN1

(2)

TM1

CN3

CONTROLLER PCB ASSY

MW24C3F : K05CX-0507WSE-C1

MW24Y3F : K05CX-0506HSE-C1

C33
33/
35V

D4
D1FL20U

CS

(75)

C34

0.1

<F>

15V

4

3

(100)

MY064

6
5
4
3
2
1

0.01 <F>

VA2

470V

<TNR>

4

3

PS2501L-1

I C1-76
I C1-75
I C1-74
I C1-73

I C1-6

I C1-4
I C1-64
I C1-63

R113 47

<1/10W>

R51 1.0K

<1/4W>

1%

<1/4W>

5V

R47 10K

<1/10W>

4

3

PS2501L-1

<KD / KE>

T2

D12 D2F20U
D10 D1FL20U

8
9

10

C35

VA3

470V

<TNR>

1

2

R64

1.8K

<1/10W>

I C15

<KD / KE>

uLN2003

I C1-43
I C1-42
I C1-41
I C1-40
I C1-39
I C1-38

R1
100K
<1/10W>

3

2

1

X1

8.38MHz

<CSTLS>

R9

0R0

RESET

R110 10K

<1/10W>

THE CIRCUIT FOR FAN MOTERS

C36

100/36V

+

R55

820

A

A

15V

1

2

I C14

R56

4.7K

<1/10W>

R63 6.8K

<1/4W>

R67
150

<1/10W>

3

0.1 <F>

C

C37

1

+

820/

REF

A

2

25V

I C19
TL431 I LPR

I C18-5

512

IC1

uPD780148

44

P00

VDD

P01

43

EVDD

P02

42

P50

P03

41

P51

P04

P52

40

P05

39

P53

38

P06

P54

18

P10

P55

P11

19

P56

P12

20

P57

P13

21

P60

P14

22

P61
P62

P15

23
24

P63

P16

25

P17

P64

80

P20

P65

79

P21

P66

P22

78

P67

P23

77

P70

P24

76

P71

75

P25

P72

74

P26

P73

73

P27

P74

7

P30

P75

6

P31

P76
P77

5

P32

4

P33

P120

64

P130

P40

63

P140

P41

62

P141

P42

P142

61

P43

60

P143

P44

59

P144

P45

58

P46

P145

57

P47

AVREF

14

RST*

IC

X1

12

REGC

13

X2

GND

AGND

15

XT1

16

XT2

EGND

C53

1000P

<R>

C1

0.1

15V

<HCP>

1.2K

<1/10W>

C38

R65 330
<1/10W>

9
31
56
55
54

53
52
51
50
49
33
32
29
28

48
47
46
45
72
71
70
69
68
67
66
65

3
17
26
27

34
35
36
37

1

8
10
11

2
30

LED

(15)

(14)

A

(13)

(12)

R70

R53

5.6K

<1/10W>

5V

1

2

5V

C40
100/
16V

340V

(11)

12V

R48
34K
<1/10W>

R76 7.87K
<1/10W>
1%

I C17

PS2501L-1

<KD / KE>

ALAM
RC

I C1-28

I C1-47
I C1-46

I C1-3
CS

VPP

5V

(65)

(66)
(67)

(68)
(69)
(70)
(71)

+

T1-12

20V

(18)

C39
100/
35V

4

3

R72 100K <1/10W>

A

BEN

5V

R7 100K
<1/10W>

CN11

7

6

5

4

3

2

1

C41

0.01
<B>

DC FAN

CN10

6

5

4

3

2

1

R79, R81 - R84

10K <1/10W> x 5

I C1-76

I C1-42

I C1-41

I C1-75

I C1-74

15V LINE ON-OFF CONTROL

C25

0.1

<F>

+

JM9

132123IO

R77 10K
<1/10W>

R78 10K
<1/10W>

6

1

16

2

C59 0.1 <F>

C47 0.1 <F>
C48 0.1 <F>
C49 0.1 <F>

I C1-4

MANUAL AUTO SWITCH

5V

R32 10K
<1/10W>

(74)

(73)

SW1

THE SWITCH FOR OPENING
AND CLOSING OF A PANEL

5V

R115

(79)

10K

1

<1/10W>

2

(78)

CN20

5V

JM5

JM6

JM7

JM8

JM10

JP SETTING

I C20

78M15

G

Q9

C42
330/
25V

2SA1036(R)

R8 1.0K <RS - 2W>

11

I C18-6 uLN2003

I C18-1 uLN2003

15

I C18-2 uLN2003

314

4

R33 1.0K

<1/10W>

R116 1.0K

<1/10W>

AUTO RESTART / PLUG ON

TEMPERATURE CORRECTION-1

TEMPERATURE CORRECTION-2

REMOTE CONTROL SWITCHING-1

REMOTE CONTROL SWITCHING-2

C56

0.1
<F>

POWER RELAY

15V

+

(20)

(19)

I C18-3 uLN2003

I C18-4 uLN2003

13

413

12

5

611

I C16-4 uLN2003

710

5V

R90 - R93
330 <1/10W> x 4

OUTSIDE COMMUNICATION

I C1-40

C28

0.01
<B>

I C1-64

I C1-63

I C1-39

C55

0.01
<B>

OFGERING POWER

K1-4

DW12D1

4

1

14

3

I C7-6 uLN2003

10

7

1

I C16-3 uLN2003

I C16-5 uLN2003

I C16-6 uLN2003

R95 10K <1/10W>
R97 10K <1/10W>
R98 10K <1/10W>
R99 10K <1/10W>

(31)

1

(32)

2

(33)

3

4

(34)

5

(35)

CN13

R88 1.0K

<1/10W>

I C7-2

uLN2003

2

15

(3)

TM2

I C1-6

C50

0.01
<B>

<1/10W>

I C1-47
I C1-46

W3

(4)

12V

K1

3

2

I C7-3 uLN2003

4

I C7-4 uLN2003

51312

I C7-7 uLN2003

16

I C16-1 uLN2003

215

I C16-7 uLN2003

TEST

G5N-1A

243

18

8

<TNR>

5V

R105
10K
<1/10W>

R103

390

ABNOMAL VOLTAGE DETECTOR

I C1-38

I C7-5 uLN2003

6

I C16-2 uLN2003

14

3

(101)

PS2561L-1-V

4

32

R94 330
<1/10W>

K10

1

POWER SUPPLY CIRCUIT

280V

W5

TH1

5D-11

150/

315V

1

2

4

D6

FH1

F1

<TNR>

I C26-14

FH2

VA1

470V

I C26-10

C8 0.47
275V

C14 0.01

250V

C13 0.01
250V

L1

4

3

T1

0.7A - 5.0MH

GS I B460L

1

2

(1)

VA4

C12

0.1
<F>

470V

<TNR>

<TNR>

C17

+

330/
25V

VA5

470V

5V

(76)

C21

C20

C18

+

10/
25V

0.1
<F>

0.1
<F>

(97)

C22

+

0.1
<F>

JM3

(96)

7V

IC2

NJM7805

123

IO

G

R45 100K

C6

<RS - 2W>

3

+

IC8

TOP243

6

D
F

5

S

43

R34 6.8K

<1/10W>

A

1

C

2

L
X

<ECQE>

R46

47

<1/2W>

R38
15K

<1/10W>

D7

1NH42

C32

0.01

Q7

2SA1037AK

<Q>

C27

+

47/

16V

20V

C4

100P

<D>

1SS355

1

2

3

C29

0.1

<F>

R42
270

<1/10W>

D9 D1FL20U

D8

+

R49 10K <1/10W>

(77)

(91)

1

2

3

4

5

6

5V

0.1

12V

IC5

5V

(92)
(93)

(94)

R35

R39 10K <1/10W>

8
4
7
5

8

4

I C1-28

I C1-73

CN9

5V

1

2

1

2

(37)

(36)

<BD102>

BLm18

<BD102>

L7

BLm18

R2 10K

<1/10W>

1%

L6

R6 49.9K

<1/10W>

R13 1.0K

<1/10W>

12V

CN6

D1F60

(86)

1

(87)

2

(88)

5V

3

(89)

4

R4 10K

5

<1/10W>

JP5

DAN217U

12V

ROOM TEMP. PIPE TEMP. THERMISTOR

R14 1.0K

<1/10W>

C15

0.1
<F>

C16

0.1

<F>

12V

R21 15.4K

<1/10W>

1%

12VD2

R22 28K

<1/10W>

1

3

D3

2

<1/10W>

R17
10K

1%

R20 1.0K <1/10W>

C26

<F>

REMOTE CONTROL COMMUNICATION

6

-

5

+

2

-

3

+

I C5-2
BA10393F

7

I C5-1
BA10393F

1

R31 390

<1/4W>

1%

5V

R30
10K
<1/10W>

C23

0.1

<F>

16 1

I C7-1
uLN2003

RESET

VCC
DO
NC

GND

VPP

5V

CS
SK
DI
NC

5V

IC6
BR93LC46

1
2
3
6

C31

0.1

<F>

EEPROM

5V

R37 10K <1/10W>
R40 10K <1/10W>

RESET

R54 10K
<1/10W>

2

4

VDD

NC

1

VOUT

GND

53

NC

IC11

BD4842

R57 330 <1/10W>
R60 330 <1/10W>
R58 330 <1/10W>
R59 330 <1/10W>

I C1-3

R52
100K
<1/10W>

LED FOR INDICATOR & REMOTE CONTROL UNIT

I C10

5V

PS2501L-1

<KD / KE>

R43 330

1

<1/10W>

2

2

3

Q6
DTC124EUA

1

C30

1000P

<R>

R44

1.0K

<1/10W>

I C1-43

H I C FOR SERIAL COMMUNICATIONS

IC26

14

VA6

27

(95)

</2W>8

I C26-14

3

2

1

Q10
DTC124EUA

R106

1.0K

I C26-10

470V

5V

R108

10K

(90)

<1/10W>

C52

R107

1000P

1.0K

<R>

<1/10W>

12V

(48)

(49)

(50)
(51)

(52)

(53)
(54)
(55)

(56)

(57)

(58)

(59)

12V

9

IC7

8

I C18-7
uLN2003

7

5V

R101 330

L3

<1/10W>

BLm11

<A601>

I C25

1

L3

BLm11

<A601>

12V

I C22

PS2561L-1-V

1

4

3

2

10

6

3

3

2

1

1

Q11
DTC124EUA

5V

3

4

3

2

PS2501L-1

1

Q12

DTC144EUA

CN8

6

5

4

3

2

1

6

5

4

3

2

1

CN5

12V

9

I C18

8

<KD / KE>

12V

I C16

BUZZER

10

(72)

CN14

(43)

3

2

(44)

1

C51

0.01
<B>

R102 390 <1/10W>
R104 10K <1/10W>

(42)

CN16

(45)

2

1

(46)

4

21

321

R114 390
<1/10W>

C54

0.01
<B>

543

5

D14
DAN202K

2

280V

R111 330K

R111 330K
<1/2W>

<1/2W>

D15

MTZJ30B

I C27

R112 62K

1

<1/2W>

2

A

LUVER OPERATING CIRCUIT

DIFFUSER

CN2

5

4

RIGHT / LEFT

3

2

1

UP / DOWN

9

8

12V

BZ1

BZ

R109 10K

<1/10W>

OUTSIDE COMMUNICATION
INPUT

OUTSIDE COMMUNICATION
OUTPUT

5V

2006.02.23 6

Models :
MW24C3F
MW24Y3F

INDICATOR PCB ASSY

K05CY-0500HSE-D0

5V

SLR-325

SLR-325

SLR-325

D201

D202

D203

I C201

GP1UM261R

2

VCC
OUT

1

GND

3

C201

0.1

<F>

5V

R201

<1/4W>

+ C202

5V

CN201

1

2

3

4

5

6

7

47

47/

10V

2006.02.23 7

OUTDOOR PCB CIRCUIT DIAGRAM

Models :
MR24C3F
MR24Y3F

UL1015

EMI FILTER

AWG14

WHITE

POWER SOURCE
AC220 - 240V
50 / 60Hz

INDOOR UNIT

N

L

3

2

1

UL1015
AWG14

BLACK

UL1015
AWG20

RED

UL1015
AWG20

BLACK

UL1015
AWG20

WHITE

EMI FILTER

TLC 25A - 250V, B

UL1015
AWG14

BLACK

F200

UL1015
AWG16

GREEN

B2P3-VH-B-Y

B

W4

SERIAL

RED

B

W1

B

W2

B

W17

B

W18

FSL 3.15A - 250V (EM)

W3

B

B

W19 W20

UL1015 AWG20 BLACK

CN110

31

YELLOW

AC VOLT I N

F100

UL1015 AWG20 WHITE

CT I N / OUT

BB

B

W21EARTH

W9

UL1015 AWG14 BLACK

UL1015 AWG14 GRAY

TM600

TM601

CT I N / OUT

POWER SUPPLY PCB
K05CW-0500HUE-FL0

B2B-XH-AM BLK

CN1

BLACK

POWER RELAY CONTROL

CN100

2

UL1007 AWG24 WHITE

2

1

UL1007 AWG24 WHITE

1

W28

W29

INVERTER ASSY

EZ-0050AHUE

EMI FILTER

B

UL1015 AWG14 ORANGE

B

UL1015 AWG14 BROWN

UL1015 AWG14 RED

CHOKE COIL

L = 0.3MH 30A

UL1015
AWG14

WHITE

L1

ACTPM

SACT32010F1

I C 404

UL1015
AWG14

WHITE

L2

N1

N2

IO

CAPACITOR PCB ASSY

K05DG-0500HUE-P0

+

-

UL1015
AWG14

WHITE

UL1015
AWG14

VIOLET

W12

B

W13

B

P

UL1015 AWG14 BLACK

UL1015
AWG14

YELLOW

B

UL1015
AWG14

BLUE

B

EMI FILTER x 2

432

56

1

TM101

+

TM102

W16

B

W17

B

D100

D25XB60

-

TR PCB ASSY ( I P M )

K05CZ-0500HUE-TR0

TM301

TM302

B10B-XASK-1

I PM CONTROL

1

23456

CN301

WHITE

7

W307

B

W306

B

8910

TM305

TM304

TM303

CN303

B2B-XH-AM

WHITE

PEAK LOAD CURRENT

21

EMI FILTER

RED

WHITE

BLACK

UL1015 AWG14 x 3

C. M.

COMPRESSOR

DC FAN MOTOR

EXPANSION VALVE

F. M .

M

4-WAY VALVE

DISCHARGE TEMP. THERMISTOR

PIPE TEMP. THERMISTOR

OUTDOOR TEMP. THERMISTOR

RED

BLACK
WHITE
YELLOW
BROWN

RED
BROWN
BLUE
ORANGE
YELLOW

WHITE

BLACK

BLACK

BROWN
BROWN

BLACK
BLACK

BLUE
BLUE

CN801

1

B5P6-VH-B-L

2

WHITE

3
4

DC FAN MOTOR

5
6

1
2

CN700

3
4

B6B-XARK-1-A

5

RED

6

CN500

1

B2P3-VH-B-C

3

WHITE

CN60
B2B-XH-AM YEL

1

YELLOW

2

CN61

1

B2B-XH-AM RED

2

RED

CN62

1
2

B2B-XAEK-1-A

BLUE

CONTROLLER PCB ASSY

K05CU-0507HUE-C1

CN400

B4B-XASK-1-A

WHITE

UL1007 AWG24 YELLOW

UL1007 AWG24 ORANGE

UL1007 AWG24 RED

432

ACTPM CONTROL

UL1007 AWG24 BROWN

1

CN200

B2P4-VH-B-M

WHITE

UL1015 AWG20 BLACK

03VH/SIN 1015 L250

4

DC VOLT I N

UL1015 AWG20 WHITE

11

B10B-XASK-1

CN40

WHITE

UL1007 AWG24 BROWN

UL1007 AWG24 RED

UL1007 AWG24 RED

UL1007 AWG24 ORANGE

23456

I PM CONTROL

UL1007 AWG24 YELLOW

UL1007 AWG24 GREEN

UL1007 AWG24 BLUE

UL1007 AWG24 PURPLE

7

UL1007 AWG24 BLACK

UL1007 AWG24 GRAY

8910

UL1007 AWG24 WHITE

B2B-XH

PEAK LOAD CURRENT

C42

WHITE

UL1007 AWG24 BROWN

UL1007 AWG24 RED

1

2

2006.02.23 8

Models :
MR24C3F
MR24Y3F

CONTROLLER PCB ASSY

K05CU-0507HUE-C1

C64
10K
<1/10W>

C64
10K
<1/10W>

2006.02.23 9

Models :
MR24C3F
MR24Y3F

K05CW-0500HUE-FL0

POWER SUPPLY PCB

2006.02.23 10

Models :
MR24C3F
MR24Y3F

TR PCB ASSY ( I P M )

K05CZ-0500HUE-TR0

2006.02.23 11

Models :
MR24C3F
MR24Y3F

CAPACITOR PCB ASSY

K05DG-0500HUE-P0

W12

WHITE

W13

VIOLET

YELLOW

B

BLUE

B

SMOOTHING CIRCUIT

B

R200
220K

<2W>

C200

++

660/

450V

C201

660/

450V

+

C202

660/

450V

B

P

N

W7

YELLOW

B

W8

BLUE

B

POWER_G

2006.02.23 12

ERROR CONTENTS

Error

Operation
LED

Display

Timer LED

Error

Serial signal error Normal

Indoor unit thermistor error 2 flash

Outdoor unit thermistor error 3 flash

2 flash

3 flash

4 flash

5 flash

8 flash

2 flash

3 flash

2 flash

3 flash

4 flash

8 flash

2 flash

Serial signal (reverse) error, at operation start up

Serial signal (reverse) error, during oeration

Serial signal (forward) error, at operation start up

Serial signal (forward) error, during operation

Wired remote controller error

Indoor temperature thermistor open / short

Heat exchanger middle thermistor open / short

Discharge thermistor open / short

Heat exchanger thermistor open

Outdoor temperature thermistor open / short

Compressor temperature thermistor open / short

Forced automatic SW welded

Indoor unit control error 4 flash

Outdoor unit control error

Indoor fan motor error 6 flash

Refrigerant cycle error 7 flash

5 flash

3 flash

4 flash

7 flash

8 flash

2 flash

3 flash

5 flash

6 flash

2 flash

3 flash

2 flash

3 flash

Main relay welded

Power interruption error

VDD permanent stop protection

reverse VDD permanent stop protection

Current trip error

CT abnormal

Compressor location detection error

Outdoor unit fan drive system abnormal

Abnormal lock

Abnormal rotation

Discharge Temperature abnormal

Cooling high pressure abnormal rise

5 flash

2 flash

Optional function error

Model error

2006.01.20 13

8 flash

Blinking Blinking

3 flash

4 flash

Pressure switch trouble

Active filter voltage trouble (second time)

Active filter voltage trouble (first time)

PFC circuit error

Model error

DISASSEMBLY ILLUSTRATION

Models : MW24C3F, MW24Y3F

5

5

4

6

4

2

2

1

2006.02.23 14

2006.02.23 15

32

35

31

Models : MW24C3F, MW24Y3F

34

36

33

28

27

9

29

30

8

2006.03.14 16

Models : MW24C3F, MW24Y3F

26

22

23

10

Models : MW24C3F, MW24Y3F

38

37

39

53

41

40

42

55

46

48

52

47

2006.06.13

17

Models : MR24C3F, MR24Y3F

14

12

13

33

24

11

37

32

38

10

50

8

5

22

53

21

54

51

39

52

20

35

3

1

6

2

18

34

36

16

2006.03.14 18

7

4

Models : MR24C3F, MR24Y3F

44

43

40

46

45

55

41

42

25

2006.03.14 19

PARTS LIST

0

INDOOR UNIT

Ref. Ord.

No MW24C3F MW24Y3F Q'ty

1 Front Panel Total Assy 67201500 67201540
2 Intake Grille Assy 67201501 67201501
4 Air Filter 67201502 67201502
5 Clamper Grille 67200936 67200936
6 Receiver Window 67201503 67201503
8 Crossflow Fan Assy 67201504 67201504

9 Bearing C Assy 67200922 67200922
10 Casing Assy 67201541 67201541
22 R and L Louver 67201506 67201506
23 SpacerB 67201507 67201507
26 Drain Cap 67201509 67201509
27 EvaporatorAssy 67201542 67201542
28 EvaporatorAssy B 67201511 67201511
29 Connection Pipe Assy 67201543 67201543
30 Distributor Assy 67201544 67201544
31 Water Seal 67201514 67201514
32 Evaporater Holder R 67201515 67201515
33 Evaporater Holder L 67201516 67201516
34 RearBracket 67201517 67201517
35 Filter Guide 67201518 67201518
36 Filter Guard 67201519 67201519
37 Controller PCB Assy 67201545 67201546
38 Control Box 67201521 67201521
39 ControlCover 67201522 67201522
40 MotorCase 67201523 67201523
41 TerminalEarth 67201524 67201524
42 DC Brushless Motor 67201525 67201525
46 Motor, Step 67201526 67201526
47 Motor, Step 67201527 67201527
48 Motor, Step 67201528 67201528
52 GearA 67201206 67201206
53 Terminal 67201529 67201529
55 Display PCB Assy 67201530 67201530

- Remote Controller 67201532 67201547

Description

Part No.

2006.02.23 2

OUTDOOR UNIT

Ref. Ord.

No MR24C3F MR24Y3F Q'ty

Description

Part No.

1 Top PanelAssy 67201400 67201400

2 Seal(Top) 67201401 67201401

3 CabinetSub Assy 67201440 67201440

4 Blow Grill 67201403 67201403

5 Cabinet Right Assy 67201441 67201441

6 Fan Ring 67201405 67201405

7 Grip 67201406 67201406

8 Switch Cover Assy 67201407 67201407
10 4-Way Valve 67201442 67201442
11 Pulse Motor Valve 67201443 67201443
12 CondenserAssy B 67201444 67201444
13 CondenserAssy 67201445 67201445
14 Thermistor Spring A 67206400 67206400
16 PropellerFan 67201413 67201413
18 Motor Bracket Assy 67201446 67201446
20 Base Assy 67201447 67201447
21 3-Way Valve Assy 67201448 67201448
22 2-Way Valve Assy 67201449 67201449
24 Cord Clamp 67201419 67201419
25 Terminal, 5 Pin 67201450 67201450
32 Expansion Valve Coil 67201422 67201422
33 Outdoor Temp. Thermistor 67201451 67201451
34 DC Brushless Motor 67201452 67201452
35 Compressor Assy 67201453 67201453
36 Emblem Rear 67201425 67201425
37 HeatExchangerThermistor 67201454 67201454
38 Discharge Thermistor 67201455 67201455
39 Solenoid 67201456 67201456
40 InverterPCB Assy 67201457 67201457
41 PowerPCB Assy 67201458 67201458
42 PowerPCB Assy 67201459 67201459
43 TR PCB Assy 67201460 67201460
44 ACTPM 67201627 67201627
45 Fuse Holder 67201461 67201461
46 Fuse 67201462 67201462
50 Pulse Motor Valve Assy 67201463 67201463
51 JNT PIPE(3WV)AS 67201464 67201464
52 PIPE(COND OLT)AS 67201465 67201465
53 PIPE(COND ILT)AS 67201466 67201466
54 Discharge Pipe Assy 67201467 67201467
55 Chock Coil 67201633 67201633

2006.06.13 21

STANDARD
ACCESSORIES

Name and Shape Part No.

Wall hook bracket

9315023018

Remote control unit

Remote control
unit holder

Battery (penlight)

Cloth tape

Tapping screw (big)

9315027160

(for cooling only)

9315027153

(for heat and cool)

9305642045

0600185534

9310519004

2006.02.23

0700076046

Tapping screw (small)

0700019036

Drain pipe

9301102000

(for heat and cool)

22

0602G3029