Circuit diagrams
56 Domestic air conditioner
13.2 Outdoor unit control board circuit diagrams
PTC1
400N/PSB400W
SA1
RA-362M
STCOM
A
B
C
D
+5V
COM
GND
ERROR
+5V
GND
+15V
+12V
17V~ 20V
+12V
250mA
1000mA
11
12
8
7
1
2
4
6
5
T301
BCK-25-2252
VDC
+5VD
+5V
+5V
+5V
1-6-RST
1-6-RST
1-6-RST
+5V
1-5-MODE
1-5-MODE
1-21-VSP
1-22-PG-BACK
1-21-VSP
1-22-PG-BACK
PC 通讯TXD
PC TXD
+5V
TXD
RXD
TXD
RXD
TEST-EN
TEST-EN
+5V
故障灯
SW-1
SW-2
+5V
SW-1
SW-2
+5V
1-18-SCL
1-17-SDA
EEPROM
+5V
1-18-SCL
1-17-SDA
STEPA
STEPB
STEPC
STEPD
COM
+12V
STEPA
STEPB
STEPC
STEPD
PTC
ST
DJR1
COM
+12V
+310V
+310V
PC 通讯RXD
PC RXD
PTC
ST
POWER
P
N
+310V
DGND
+310V
COMA
+5V
AC-N
COMA
HEAT1
COM-TXD
COM-RXD
+5V
TXD-PC
TEST/SS
RXD-PC
+5V
+5V
+5V
DRM1
DRM2
DRM3
GND
DRM1
DRM2
DRM3
0Ω
J1
ON
J1
NORDIC
OFF
10Hz UP
J2
ON
ON
ON
OFF
10Hz DN
OFF
OFF
OTHER AREA
1
D250/63824-1
CN1
AC-N
1
D250/63824-1
CN2
AC-L
PE
1
D250/63824-1
CN3
COM
1
D250/63824-1
CN4
AC-N
1
D250/63824-1
CN7
AC-L
1
D250/63824-1
CN6
AC-L OUT
1
D250/63824-1
CN9
AC-N OUT
1
D250/63824-1
CN8
1
2
B2P3-VH(
CN10
1
D250/63824-1
CN26
1
D250/63824-1
CN24
1
2
3
B3B-XH-BL-
CN23
1
2
3
B3B-XH-B-
CN22
1
2
3
4
B4B-XH-A-
CN33
1
2
3
4
5
6
6-1971798-
CN20
1
2
3
4
5
6
6-1971798-3-
CN16
1
2
3
4
5
B5B-XH-W-
CN19
1
2
3
4
5
B5B- XH-W-
CN29
MMSD4148T1G
D5
MMSD4148T1G
D6
MMSD4148T1G
D8
MMSD4148T1G
D9
MMSD4148T1G
D13
MMSD4148T1G
D14
MMSD4148T1G
D15
US1M(1A-1000V-75ns)
D301
US1M(1A-1000V-75ns)
D302
1
2
B2P3-VH(
CN48
SML-210MT
LED1
SML-210MT
LED2
SML-210MT
LED3
TVS1
PTVS5V0S1UR-5V-400W- 单向
2SC2412K
N1
2SD1781KT146R
N2
2SC2412K
N5
2SA1037AK
P2
2SA1037AK
P1
2SC2412K
N3
2SC2412K
N6
2SC2412K
N7
1
2
4
3
8mH-20A
L1
RV4
TVR14621KB251Y
R27
220K-2W
R23
220K-2W
1M-1/4W
R1
1M-1/4W
R2
R12
100Ω-1W
4.3K±1%
R309
15K± 1%
R310
5.1K±1%
R311
20K±1%
R308
560-0805
R306
20K±1%
R76
20K±1%
R78
47K±1%
R82
560-0805
R14
560-0805
R26
560-0805
R24
560-0805
R18
15-0805
R304
2Ω-1206
R302
2Ω-1206
R303
33K-0805
R312
100-0805R30
100-0805
R31
2K-0805
R75
2K
R59
2K
R61
10K
R60
10K
R62
10K
R48
10K
R49
10K
R51
10KR68
10KR80
10KR81
10K
R65
10K
R95
10K
R88
10K
R39
1K
R97
1K
R9
1KR10
1K
R11
1KR22
1KR28
10K
R19
10KR17
10KR13
10KR74
FUSE1
T25A250VAC
1K-0805
R55
1K-0805
R50
1K-0805
R98
330-0805
R43
R4
2K-2W
82
0U F-450V -
105
℃
E1
820U
F -450 V
-
105
℃
E2
470uF-35V-105℃-
E305
1000uF-25V-105℃-
E303
0.1uF
C311
0.1uF
C312
0.1uF
C306
0.1uF
C309
0.1uF
C308
0.1uF
C304
0.1uF
C307
0.1uF
C19
0.1uF
C23
0.1uF
C25
0.1uF
C26
0.1uF
C12
0.1uF
C13
0.1uF
C33
0.1uF
C34
0.1uF
C35
0.1uF
C10
0.1uF
C11
0.1uF
C7
1uFC8
1nF
C9
1nF
C20
1nF
C14
1nF
C5
1nF
C6
0.01uF-630V
C3
472/250V/275V
CY1
0.1uF
C1
2.2uF/275V
CX1
2.2uF/275V
CX2
103/275V
CX4
470pF-100V-0805
C305
BV
1
FBB
2
CS
3
NC
4
Drain
5
GND
8
VCC
7
ICE3AR2280VJZ-DIP-7
IC301
A0
1
A1
2
A2
3
GND
4
SDA
5
SCL
6
WP
7
VCC
8
IC6
M24C16
INPUT
1
GND
2
OUTPUT
3
IC305
L7805CV
INPUT
1
GND
2
OUTPUT
3
IC306
L7805CV
INPUT
1
GND
2
OUTPUT
3
IC303
L7815
P01/TO00
61
P27/ANI7
49
P26/ANI6
50
P25/ANI5
51
P24/ANI4
52
P23/ANI3
53
P22/ANI2
54
P21/ANI1/AVREFM
55
P20/ANI0/AVREFP
56
P130
57
P04/SCK10/SCL10
58
P03/ANI16/SI10/RXD1/SDA10
59
P02/ANI17/SO10/TXD1
60
P00/TI00
62
P141/PCLBUZ1/INTP7
63
P140/PCLBUZ0/INTP6
64
P120/ANI19
1
P43
2
P42/TI04/TO04
3
P41/TI07/TO07
4
P04/TOOL0
5
RESET
6
P124/XT2/EXCLKS
7
P123/XT1
8
P137/INTP0
9
P122/X2/EXCLK
10
P121/X1
11
REGC
12
VSS
13
EVSS0
14
VDD
15
EVDD0
16
P147/ANI18
48
P73/KR3/SO01
26
P72/KR2/SO21
27
P71KR1/SI21/SDA21
28
P70/KR0/SCK21/SCL21
29
P06/TI06/TO06
30
P05/TI05/TO05
31
P30/INTP3/RTC1HZ/SCK11/SCL11
32
P50/INTP1/SI11/SDA11
33
P51/INTP2/SO11
34
P52/(INTP10)
35
P53/(INTP11)
36
P54
37
P55/(PCLBUZ1)/(SCK00)
38
P17/TI02/TO02/(SO00)/(TXD0)
39
P16/TI01/TO01/INTP5/(SI00)/(RXD0)
40
P14/RXD2/SI20/SDA20/(SCLA0)/(TI03)/(TO03)
42
P12/SO00/TXD0/TOOLTXD/(INTP5)/(TI05)/(TO05)
44
P10/SCK00/SCL00/(TI07)/(TO07)
46
P60/SCLA0
17
P61/SDAA0
18
P62
19
P63
20
P75/KR5/INTP9/SCK01/SCL01
24
P74/KR4/INTP8/SI01/SDA01
25
P76/KR6/INTP10/(RXD2)
23
P146
47
P31/TI03/TO03/INTP4/(PCLBUZ0)
21
P77/KR7/INTP11/(T XD2)
22
P11/SI00/RXD0/TOOLRXD/SDA00/(TI06)/(TO06)
45
P15/SCK20/SCL20/(TI02)/(TO02)
41
P13/TXD2/SO20/(SDAA0)/(TI04)/(TO04)
43
R5F100LEAFA
IC5
3
5
4
1 2
HF33F/012-ZS(310)(335)
K1
3 4
1 2
12V-25A-891P-1A-S
K5
0.01uF-630V
C310
10K
R29
10K
R53
10K
R54
10K
R56
1nF
C302
4.7nF
C303
RV2
TVR14621KB251Y
RV3
TVR14621KB251Y
RV1
TVR14621KB251Y
472/250V/275V
CY2
472/250V/275V
CY3
472/250V/275V
CY4
472/250V/275V
CY8
472/250V/275V
CY9
2.2nF/250V/275V
CY5
2.2nF/250V/275V
CY10
AC-N
1
2
4
3
8mH-20A
L2
FUSE2
T3.15A/250VAC
4 3
1 2
K3
HF32F-012-HS(310)
（
335
）
4 3
1 2
K2
HF32F-012-HS(310)
（335）
ER2D/MURS220T3G
D304
3
1
2
REF
K
A
IC304
AZ431SANTRG1-SOT23
51-1206
R305
51-1206
R313
+5V
+15V
+15V
+5V
1
2
3
4
6
CN21
B5P6-VH-
2.7K-0805
R37
390-0805
R38
10K-0805
R34
10K-0805
R35
10K-0805
R33
10K-0805
R36
0.1uF-0805
C15
NC4
NC5
NC6
4.7nF/630V
C301
R301
47K-3W
SB5100(5A-100V)
D303
1
2
3
4
B4B- XH-A-
CN28
1
2
3
4 5
6
7
8
1 K
1 K
1 K
1 K
RA1
1K
1
2
3
4
5
6
7
8
10K
10K
10K
10K
RA3
10K
1
2
3
4 5
6
7
8
10K
10K
10K
10K
RA7
10K
1
2
3
4
5
6
7
8
10K
10K
10K
10K
RA8
10K
1
2
3
4 5
6
7
8
1 0 K
1 0 K
1 0 K
1 0 K
RA6
10K
1
2
3
4 5
6
7
8
1 0 K
1 0 K
1 0 K
1 0 K
RA5
10K
10K-0805
R64
1K-1206
R41
DRM1
DRM2
DRM3
10K
R66
1K-1206
R79
4.7K
R5
4.7K
R3
4.7K
R8
4.7K
R7
4.7K
R21
4.7K
R25
4.7K
R47
4.7K
R40
10K
R45
10K
R44
1K-0805
R77
1K
R83
DJR1
COM-TXD
COM-RXD
0ΩJ2
1K-1206R15
1K-1206
R16
10K-0805
R96
PC817A-
IC10
PC817A-
IC8
PC817A-
IC9
TLP628/PC851-
IC3
PC817A-
IC302
0.1uF
C21
1.2K-0805
R307
RV5
TVR14621KB251Y
RV6
TVR14621KB251Y
R20
4.7K-0805
+5V
+12V
E8
100uF-16V-105
℃
E308
100uF-16V-105
℃
E307
100uF-16V-105
℃
E302
22uF-35V-105
℃-
E9
47U F-50V -105
℃
E306
220uF-25V-105
℃-
C18
10nF-0805
R6
1K-0805
S1M/MRA4007 (1A-1000V)
D17
S1M/MRA4007 (1A-1000V)
D10
ZD1
SM4746A
ZD2
SM4746A
R32
270K-0805
C4
1nF-1206
+5V
N8
2SC2412K
R46
10K
R63
10K
R42
10K
+5V
1
2
3
4
5
6
7
8
10K
10K
10K
10K
RA2
10K
I1
1
I2
2
I3
3
I4
4
I5
5
I6
6
I7
7
GND
8
COM
9
O7
10
O6
11
O5
12
O4
13
O3
14
O2
15
O1
16
ULN2003
IC7
To Next Page
Loading...
Need help?
General
