Friedrich MR24C3F User manual

SPLIT TYPE
ROOM AIR CONDITIONER
WALL MOUNTED type
CONTENTS
SPECIFICATIONS ................... 1
DIMENSIONS ....................... 2
REFRIGERANT SYSTEM DIAGRAM .... 3
CIRCUIT DIAGRAM ................. 4
ERROR CONTENTS ................
5INDOOR PCB CIRCUIT DIAGRAM .....
8OUTDOOR PCB CIRCUIT DIAGRAM . . .
13
DISASSEMBLY ILLUSTRATION ....... 14
PARTS LIST ....................... 20
22 STANDARD ACCESSORIES ..........
Models
Indoor unit Outdoor unit
MW24C3F MR24C3F
MW24Y3F MR24Y3F

SPECIFICATIONS
INDOOR UNIT
MW24C3F MW24Y3F
OUTDOOR UNIT
MR24C3F MR24Y3F
COOLING CAPACITY
24,200 BTU/hr 24,200 BTU/hr
HEATING CAPACITY
- 27,600 BTU/hr
POWER SOURCE 208 V / 230 V 208 V / 230 V
FREQUENCY
60Hz 60Hz
RUNNING CURRENT COOLING
10.1 A 10.1 A
HEATING - 10.8 A
INPUT WATTS COOLING
2,310 W 2,310 W
HEATING - 2,470 W
SEER 18.0 18.0
MOISTURE REMOVAL
6.3 Pts/hr
(3.0 L/hr)
6.3 Pts/hr
(3.0 L/hr)
AIR CIRCULATION -High 647 cfm
(1,100 m3/hr)
647 cfm
(1,100 m3/hr)
ELECTRICAL DATA
COMPRESSOR
FAN MOTOR
DIMENSIONS
TYPE
Hermetic motor compressor,
4 poles, Involute scroll type
DISCRIMINATION
POWER SOURCE
5CS160 XAA23
208 V / 230 V 60Hz
REFRIGERANT R410A
3 lb. 8 oz ( 1,600 g )
POWER SOURCE 208 V / 230 V
HIGH
1,310 r.p.m.
1,120 r.p.m.
940 r.p.m.
830 r.p.m.
1,000 r.p.m.
-1,050 r.p.m.
1,000 r.p.m.
INDOOR UNIT MED
COOL
HEAT
LOW
QUIET
OUTDOOR UNIT
INDOOR UNIT HxWxD
HxWxD
12-5/8 x 39-1/4 x 9 inch
OUTDOOR UNIT
WEIGHT
INDOOR UNIT Gross / Net
Gross / Net
40 / 31 lbs. (18 / 14 kg )
OUTDOOR UNIT
106 / 97 lbs. (48 / 44 kg )
320 x 998 x 228 mm
22-3/4 x 31-1/8 x 12-3/8 inch
578 x 790 x 315 mm
NOISE LEVEL
REFRIGERANT CHARGE (R410A)
HIGH
47 dB
41 dB
36 dB
32 dB
C47dB / H45dB
C41dB / H41dB
C36dB / H36dB
C32dB / H32dB
52 dB C52dB / H53dB
INDOOR UNIT MED
LOW
QUIET
15 m
20 m
25 m
30 m
OUTDOOR UNIT
FULL CHARGE
AMOUNT
Pipe Length 3 lb. 8 oz. (1,600 g)
0.2 oz./ft. (20g/m)
ADDITIONAL CHARGE
3 lb. 12 oz. (1,700 g)
3 lb. 15 oz. (1,800 g)
4 lb. 3 oz. (1,900 g)
2006.03.14 1

11-13/16" (300)
2-3/8"
(60)
31-1/8" (790)
23-1/4" (540)
20" (508)
3/4" (20)
4-15/16" (125)
12-5/8" (320)
1-7/8" (48)
13-11/16" (347)
22-3/4" (578)
3/8"
(10)
2006.02.23
OUTLINE AND DIMENSIONS
Unit : inch (mm)
OUTDOOR UNIT
INDOOR UNIT
2
39-1/4" (998) 9" (228)
12-5/8"
(320)

REFRIGERANT SYSTEM DIAGRAM
2-Way
valve
Strainer
Strainer
Strainer
3-Way
valve
Muffler
4-Way valve
Expansion valve
Heat exchanger
( INDOOR )
Heat exchanger
( OUTDOOR )
Sub-accumulator
Compressor
Cooling
Heating
MW24C3F / MR24C3F
MW24Y3F / MR24Y3F
Models :
Refrigerant pipe diameter
Liquid : 1/4" (6.35 mm)
Gas : 5/8" (15.88 mm)
2006.02.23 3

CIRCUIT DIAGRAM
2004.11.09 4

2006.02.23 5
CN11
B07B-9ASK
CN201
JB20-07HG
CN11-1 RED
CN11-2 WHITE
CN11-3 WHITE
CN11-4 WHITE
CN11-6 WHITE
CN11-7 WHITE
CN11-5 WHITE
1
2
3
4
5
6
7
1
2
3
4
5
6
7
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
6
1
2
3
4
5
CN6
5P-SAN
CN2
SJH20-05WS
CN5
SJH20-06WS
CN8
B06B-PASK
CN10
B06B-XARK
CN3
2P-SCN
CN1
2P-SAN
CN13
B5P-SHF-1AA
1
2
1
2
1
2
3
4
5
CN3-1 BLACK
CN3-2 BLACK
CN1-2 BLACK
CN1-1 BLACK
CN13-1
CN13-1
CN13-1
CN13-1
CN13-2
TEST
PIPE TEMPERATURE THERMISTOR
ROOM TEMPERATURE THERMISTOR
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
CN10-1 BLUE
CN10-2 YELLOW
CN10-3 WHITE
CN10-4 BLACK
CN10-6 RED
FAN MOTOR
DIFFUSER
LOUVER
( UP / DOWN )
LOUVER
( RIGHT / LEFT )
OUTDOOR
UNIT
W4 TM2
22007
TM4
22007
TM1
22007
GREEN RED WHITE BLACK
THERMAL
FUSE 103
EARTH TERMINAL
SERIAL
EARTH
L
NN
L
3
TERMINAL BOARD
INDICATOR PCB ASSY
K05CY-0500HSE-D0
CONTROLLER PCB ASSY
MW24C3F : K05CX-0507WSE-C1
MW24Y3F : K05CX-0506HSE-C1
M
M
M
F. M.
CONTROL UNIT
MW24C3F : EZ-005CWSE
MW24Y3F : EZ-00523HSE
INDOOR PCB CIRCUIT DIAGRAM
Models :
MW24C3F
MW24Y3F

5V
VA6
470V
<TNR>
R106
1.0K
</2W>8
TM2
(3)
D14
DAN202K
Q11
DTC124EUA
12
3
3
2
1
2
3
1Q10
DTC124EUA C54
0.01
<B>
R114 390
<1/10W>
10 54321
14
18
827 654
I C26-14
I C26-10
321
I C1-6
I C1-47
I C1-46
R105
10K
<1/10W>
5V
C50
0.01
<B>
(95)
R103
390
<1/10W>
280V
5V
(90)
I C27
PS2501L-1
<KD / KE>
D15
MTZJ30B
5V
R111 330K
<1/2W>
R111 330K
<1/2W>
R112 62K
<1/2W>
A
2
1
4
3
1
3
2
I C1-38
C52
1000P
<R>
Q12
DTC144EUA
R107
1.0K
<1/10W>
R108
10K
<1/10W>
12V
W3
(4)
12V
12V
12V
IC7 I C18 I C16
88
8
999
(59)
(58)
(57)
(56)
(55)
(54)
(53)
I C7-3 uLN2003
I C7-4 uLN2003
I C7-5 uLN2003
I C7-6 uLN2003
(52)
(51)
(50)
(49)
(48)
12V
I C7-7 uLN2003
I C16-1 uLN2003
I C16-3 uLN2003
I C16-2 uLN2003
3
4
14
5
13
12
6
710
116
215
314
I C18-6 uLN2003
I C18-1 uLN2003
I C18-2 uLN2003
I C18-3 uLN2003
I C18-4 uLN2003
I C16-4 uLN2003
I C16-5 uLN2003
I C16-6 uLN2003
I C16-7 uLN2003
611
116
215
314
413
413
512
611
710
710
12V
I C18-7
uLN2003
(72)
R109 10K
<1/10W>
BZ
BZ1
(101)
5V
(43)
(44)
R101 330
<1/10W>
L3
BLm11
<A601>
I C25
PS2561L-1-V
L3
BLm11
<A601>
4
32
1
3
2
1
C51
0.01
<B>
CN14
R102 390 <1/10W>
R104 10K <1/10W>
CN16
(42)
(45)
(46)
1
2
2
1
3
4
2
4
3
1
12V
K10
G5N-1A
R94 330
<1/10W> I C22
PS2561L-1-V
R88 1.0K
<1/10W>
I C7-2
uLN2003
215
I C1-64
I C1-63
R79, R81 - R84
10K <1/10W> x 5 5V
I C1-76
I C1-42
I C1-41
I C1-75
I C1-74
JM5
JM6
JM7
JM8
JM10
AUTO RESTART / PLUG ON
TEMPERATURE CORRECTION-1
TEMPERATURE CORRECTION-2
REMOTE CONTROL SWITCHING-1
REMOTE CONTROL SWITCHING-2
13
2
1
2
3
IO
G
+
+
(20)
15V
C56
0.1
<F>
I C20
78M15
(19)
C42
330/
25V
R77 10K
<1/10W>
R78 10K
<1/10W>
R8 1.0K <RS - 2W>
20V
(18)
C25
0.1
<F>
C39
100/
35V
I C17
PS2501L-1
<KD / KE>
5V
R72 100K <1/10W>
A
2
1
3
4
I C18-5
uLN2003
R65 330
<1/10W>
IC1
uPD780148 5V
512
I C1-43
I C1-42
I C1-41
I C1-40
I C1-39
I C1-38
ALAM
RC
I C1-28
I C1-47
I C1-46
I C1-3
CS
VPP
BEN
5V
5V
R7 100K
<1/10W>
44
43
42
41
40
39
38
18
19
20
21
22
23
24
25
80
79
78
77
76
75
74
73
7
6
5
4
64
63
62
61
60
59
58
57
14
12
13
15
16
2
1
3
30
2
11
10
8
1
37
36
35
34
27
26
17
3
65
66
67
68
69
70
71
72
45
46
47
48
28
29
32
33
49
50
51
52
53
54
55
56
31
9
P00
P01
P02
P03
P04
P05
P06
P10
P11
P12
P13
P14
P15
P16
P17
P20
P21
P22
P23
P24
P25
P26
P27
P30
P31
P32
P33
P40
P41
P42
P43
P44
P45
P46
P47
RST*
X1
X2
XT1
XT2 EGND
AGND
GND
REGC
IC
AVREF
P145
P144
P143
P142
P141
P140
P130
P120
P77
P76
P75
P74
P73
P72
P71
P70
P67
P66
P65
P64
P63
P62
P61
P60
P57
P56
P55
P54
P53
P52
P51
P50
EVDD
VDD
(75)
X1
8.38MHz
<CSTLS>
C34
0.1
<F>
R9
0R0
R110 10K
<1/10W>
RESET
4
53
2
1
NC
NC
VDD
VOUT
GND
5V R54 10K
<1/10W>
IC11
BD4842
C31
0.1
<F>
R57 330 <1/10W>
R60 330 <1/10W>
R58 330 <1/10W>
R59 330 <1/10W>
R113 47
<1/10W>
I C1-3
C53
1000P
<R>
C40
100/
16V
+C41
0.01
<B>
SW1
(74)
(71)
(70)
(69)
(68)
(67)
(66)
(65)
CN11
7
6
5
4
3
2
1I C1-40
5V
(73)
C28
0.01
<B>
R33 1.0K
<1/10W>
R32 10K
<1/10W>
MANUAL AUTO SWITCH
(79)
R115
10K
<1/10W>
5V
CN20 (78)
1
2I C1-39
C55
0.01
<B>
R116 1.0K
<1/10W>
(13)
(12)
(11)
R63 6.8K
<1/4W>
15V
15V (14)
(15)
340V
C1
0.1
<HCP>
A
6
5
4
3
2
1
4
32
1
A
A
(100)
+
2
1
3
4
15V
5V
R43 330
<1/10W>
I C10
PS2501L-1
<KD / KE>
5V
Q6
DTC124EUA
I C1-43 2
1
3
R51 1.0K
<1/4W>
1%
R47 10K
<1/10W>
R55
820
<1/4W>
C36
100/36V
I C14
PS2501L-1
<KD / KE>
R44
1.0K
<1/10W>
C30
1000P
<R> R56
4.7K
<1/10W>
I C7-1
uLN2003
R31 390
<1/4W>
1%
R30
10K
<1/10W>
5V
I C5-1
BA10393F
I C5-2
BA10393F
-
-
C23
0.1
<F>
IC5
I C1-28
I C1-73
16 1
+
+
3
21
5
67
4
8
12V
R1
100K
<1/10W>
R52
100K
<1/10W>
5V
5V
R35
IC6
BR93LC46
R39 10K <1/10W>
C26
0.1
<F>
VCC
DO
NC
GND
CS
SK
DI
NC
5
7
4
8
6
3
2
1
I C1-76
I C1-75
I C1-73
I C1-74
I C1-6
I C1-4
I C1-64
I C1-63
VPP
RESET
1
2
3
4
5
6
5V 5V
R37 10K <1/10W>
R40 10K <1/10W>
CN9 (91)
(92)
(93)
(94)
CS
C15
0.1
<F>
R14 1.0K
<1/10W>
5V
R2 10K
<1/10W>
1%
CN1
ROOM TEMPERATURE
2
1
R6 49.9K
<1/10W>
C16
0.1
<F>
R13 1.0K
<1/10W>
12V
12V
CN6
JP5
12V
R4 10K
<1/10W>
5V
12VD2
D1F60
D3
DAN217U
(86)
(87)
(88)
(89)
R17
10K
<1/10W>
12
3
R20 1.0K <1/10W>
R22 28K
<1/10W>
1%
R21 15.4K
<1/10W>
1%
REMOTE CONTROL UNIT
<RED>
<WHITE>
<BLACK>
JP SWITCHING
1
2
3
4
5
RESET
LED FOR INDICATOR & REMOTE CONTROL UNIT
LED
CN10
DC FAN
THE CIRCUIT FOR FAN MOTERS
I C1-4
C59 0.1 <F>
C47 0.1 <F>
C48 0.1 <F>
C49 0.1 <F>
5V
R90 - R93
330 <1/10W> x 4
R95 10K <1/10W>
R97 10K <1/10W>
R98 10K <1/10W>
R99 10K <1/10W>
TEST
CN13
(31)
(32)
(33)
(34)
(35)
1
2
3
4
5
OUTSIDE COMMUNICATION
OUTSIDE COMMUNICATION
OUTPUT
OUTSIDE COMMUNICATION
INPUT
BUZZER
LUVER OPERATING CIRCUIT
ABNOMAL VOLTAGE DETECTOR
OFGERING POWER
IC26
H I C FOR SERIAL COMMUNICATIONS
POWER RELAY
JP SETTING
15V LINE ON-OFF CONTROL
12V
R76 7.87K
<1/10W>
1%
R48
34K
<1/10W>
I C19
TL431 I LPR
C37
820/
25V
+
A
C
REF
2
3
1
2
3
1
4
2
1
3
T1
0.7A - 5.0MH
TH1
5D-11
280V
D6
GS I B460L
C6
150/
315V
+
IC8
TOP243
R34 6.8K
<1/10W>
R38
15K
<1/10W>
+
C27
47/
16V
R42
270
<1/10W>
+
C29
0.1
<F>
Q7
2SA1037AK
<Q>
R45 100K
<RS - 2W> C32
0.01
<ECQE>
D7
1NH42
R46
47
<1/2W>
R49 10K <1/10W>
D8
1SS355
20V
C4
100P
<D>
D9 D1FL20U
C35
0.01 <F>
VA2
470V
<TNR>
VA3
470V
<TNR>
T2
MY064
R64
1.8K
<1/10W>
I C15
PS2501L-1
<KD / KE>
D4
D1FL20U
C33
33/
35V
4
32
1
8
9
10
6
5
4
3
2
1T1-12
D12 D2F20U
D10 D1FL20U
C38
0.1 <F>
R53
5.6K
<1/10W>
R70
1.2K
<1/10W>
R67
150
<1/10W>
6
5
43
2
1
D
F
S
C
L
X
A
C8 0.47
275V
L1
(76)
5V
12
43
7V
(96)
(97)
JM3
+C22
0.1
<F>
(1)
(77)
C19
330/
25V
T1-12
TM1
(2)
FH1 FH2
F1
VA1
470V
<TNR>
K1-4
I C26-14 I C26-10
IC2
NJM7805
VA4
470V
<TNR>
VA5
470V
<TNR>
C21
0.1
<F>
C20
0.1
<F>
C12
0.1
<F>
C18
10/
25V
+
C17
330/
25V
+
IO
G
1
2
3
EEPROM
ROOM TEMP. PIPE TEMP. THERMISTOR
THE SWITCH FOR OPENING
AND CLOSING OF A PANEL
POWER SUPPLY CIRCUIT
REMOTE CONTROL COMMUNICATION
K1
DW12D1
K1-4
4
1
3
2
6
5
4
3
2
15
4
3
2
1
6
5
4
3
2
1
CN8
DIFFUSER
CN2
RIGHT / LEFT
UP / DOWN
CN5
W5
TM4
C13 0.01
250V
C14 0.01
250V
PIPE TEMPERATURE CN3
1
2
(36)
(37)
1
3
L6
BLm18
<BD102>
L7
BLm18
<BD102>
JM9
Q9
2SA1036(R)
2006.02.23 6
CONTROLLER PCB ASSY
MW24C3F : K05CX-0507WSE-C1
MW24Y3F : K05CX-0506HSE-C1
Models :
MW24C3F
MW24Y3F

CN201
5V
C201
0.1
<F>
5V
+ C202
47/
10V
R201
47
<1/4W>
I C201
GP1UM261R
5V
D201
SLR-325
D203
SLR-325
D202
SLR-325 5
4
6
1
2
3
7
2
1
3
VCC
OUT
GND
INDICATOR PCB ASSY
K05CY-0500HSE-D0
Models :
MW24C3F
MW24Y3F
2006.02.23 7

UL1007 AWG24 RED
TM101
TM102
W16
D100
D25XB60
+
B
W17
B
B
B
B
B
B
B
BB
B
B
B
B
B
B
W3
W18
B
W17
W19 W20 W9 W21EARTH CN100
W28
W29
TM301
TM302
B
B
W12
W13
W307
W306
+
L1 L2
P
N1
N2
IO
CHOKE COIL
L = 0.3MH 30A
TM600
TM601
B
W4
COMPRESSOR
EMI FILTER
EMI FILTER
W1
W2
F200
TLC 25A - 250V, B
EMI FILTER
EMI FILTER
N
L
3
2
1
UL1015
AWG14
WHITE
UL1015
AWG14
BLACK
UL1015
AWG20
RED
UL1015
AWG20
BLACK
UL1015
AWG20
WHITE
UL1015
AWG16
GREEN
UL1015
AWG14
BLACK
POWER SOURCE
AC220 - 240V
50 / 60Hz
INDOOR UNIT
DC FAN MOTOR
EXPANSION VALVE
4-WAY VALVE
DISCHARGE TEMP. THERMISTOR
PIPE TEMP. THERMISTOR
OUTDOOR TEMP. THERMISTOR
BROWN
BROWN
BLACK
BLACK
BLUE
BLUE
1
2
1
2
1
2
CN60
B2B-XH-AM YEL
YELLOW
CN61
B2B-XH-AM RED
RED
CN62
B2B-XAEK-1-A
BLUE
CN500
B2P3-VH-B-C
WHITE
CN700
B6B-XARK-1-A
RED
CN801
B5P6-VH-B-L
WHITE
DC FAN MOTOR
BLACK
BLACK
WHITE
YELLOW
ORANGE
BLUE
BROWN
RED
RED
BLACK
WHITE
YELLOW
BROWN
1
3
1
2
3
4
5
6
1
2
3
4
5
6
31
SERIAL
RED
CN110
B2P3-VH-B-Y
YELLOW
AC VOLT I N CT I N / OUT
CN1
B2B-XH-AM BLK
BLACK
POWER RELAY CONTROL
21
4321
CN400
B4B-XASK-1-A
WHITE
ACTPM CONTROL DC VOLT I N
CN200
B2P4-VH-B-M
WHITE 411
2345678910
CN40
B10B-XASK-1
WHITE
I PM CONTROL PEAK LOAD CURRENT
C42
B2B-XH
WHITE 21
12345678910 21
CN301
B10B-XASK-1
WHITE
I PM CONTROL
CN303
B2B-XH-AM
WHITE
PEAK LOAD CURRENT
UL1007 AWG24 BROWN
UL1007 AWG24 RED
UL1007 AWG24 BROWN
UL1007 AWG24 RED
UL1007 AWG24 ORANGE
UL1007 AWG24 YELLOW
UL1007 AWG24 GREEN
UL1007 AWG24 BLUE
UL1007 AWG24 PURPLE
UL1007 AWG24 GRAY
UL1007 AWG24 BLACK UL1007 AWG24 WHITE
UL1015 AWG20 BLACK
UL1015 AWG20 WHITE
UL1015 AWG14 BLACK
UL1015 AWG14 GRAY
UL1007 AWG24 WHITE
UL1007 AWG24 WHITE
21
UL1007 AWG24 YELLOW UL1007 AWG24 ORANGE
UL1007 AWG24 RED
UL1007 AWG24 BROWN
4321
56
UL1015 AWG20 WHITE
UL1015 AWG20 BLACK
03VH/SIN 1015 L250
TM305
TM304
TM303
UL1015 AWG14 x 3
BLACK
WHITE
RED
UL1015
AWG14
WHITE
UL1015
AWG14
WHITE
UL1015
AWG14
WHITE
UL1015
AWG14
VIOLET
UL1015
AWG14
BLUE
UL1015
AWG14
YELLOW
UL1015 AWG14 RED
UL1015 AWG14 BLACK
-
UL1015 AWG14 ORANGE
UL1015 AWG14 BROWN
CT I N / OUT
F100
FSL 3.15A - 250V (EM)
F. M.
M
C. M.
EMI FILTER x 2
-
CONTROLLER PCB ASSY
K05CU-0507HUE-C1
POWER SUPPLY PCB
K05CW-0500HUE-FL0
ACTPM
I C 404
SACT32010F1
CAPACITOR PCB ASSY
K05DG-0500HUE-P0
TR PCB ASSY ( I P M )
K05CZ-0500HUE-TR0
2006.02.23 8
INVERTER ASSY
EZ-0050AHUE
OUTDOOR PCB CIRCUIT DIAGRAM
Models :
MR24C3F
MR24Y3F

C64
10K
<1/10W>
C64
10K
<1/10W>
2006.02.23 9
CONTROLLER PCB ASSY
K05CU-0507HUE-C1
Models :
MR24C3F
MR24Y3F