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14 Circuit diagrams
14.1 Outdoor unit control board Circuit Diagrams
CN2
FUSE1
1
T25A250VA C
AC-L
R1
RV1
CN1
1M
S14K350
1
AC-N
RV2
RV3
CN3
SA1
S14K350
S14K350
1
PE
RA-362M
RXD2
RXD2
TXD2
TXD2
RXD1
RXD1
TXD1
TXD1
J66
MC14052
R93
0
+5V
R73
R76
CN21
20K/1%
20K/1%
XG-A
4
R74
5V
E18
J62
3
5V
4.7U/16V
1K
2
CG-A
E19
1
R75
4.7U/16V
CN20
1K
XG-B
4
5V
E16
R70 1K
3
5V
4.7U/16V
2
CG-B
E17
1
R71
4.7U/16V
CN19
1K
5V
3
C28 C27
E15
2
HW
4.7U/16V
104/50V
1
CN18
4.7U/16V
C26
5V
E14
2
R68
CS
1
1K
CN17
R66
4.7U/16V
3
1K
5V
E13
2
R64
TC
1
1K
+5V
R89
R88
10K
1K
CN45
+5V
CN33
C16
GND
1
4
104/50V
1
5V
2
R91
3
2
+5V
RST
J29
0
2
3
R37
MODE
1
4
10K
J28
CN35
FL ASH
AC-L
AC-N
D4
D3
D2
D1
IN 4007
IN 4007
IN 4007
IN 4007
NTC1
SCK -4R72
E10
47U/450V
CY11
472/1K V
D5
CX5
IN 4937\ER106
104/275V
ZD1
IN 5948B
R19
5.1K/1%
IC1
R18
1
8
AD J
HV
10K
2
7
FB
NC
R92 0
3
6
CS
VCC
J8
4
5
GND
DRV
NCP1200P100
R20
R22
1K
15
R21
M 1
20K/1%
IRFUC20
C4
103/50V
R9
2/1W
IC12
C14
3
102/50V
R38
4
RXD2
1K
TLP421/PS2561
R39
+5V
2K
IC11
R40
1
1K
2
TXD 2
TLP851/PC851
IC10
C15
3
102/50V
R41
4
RXD1
1K
TLP421/PS2561
R42
+5V
2K
IC9
R43
1
1K
2
TXD 1
TLP851/PC851
CN7
CN6
AC-LOUT
AC-NOUT
L1
L2
R2
CX1
CX2
1M
225/275V
225/275V
8MH/20A
8MH/20A
472/250V/275V
CY5
CY6
472/250V/275V
CN8
1
J12
J15
J27
IC13
+5V
PE
Y0
VDD
Y2
X2
Y
X1
J49
Y3
X
J39
Y1
X0
INH
X3
VEE
A
J48
VSS
B
IC5
+5V
49
4052-A
Y0
VDD
50
CG
Y2
X2
51
HW
Y
X1
52
CS
Y3
X
53
XG
Y1
X0
54
TC
INH
X3
55
NC
VEE
A
56
NC
VSS
B
57
58
MC14052
59
VSS/AVSS
C23
60
104/50V
61
VREF
62
VCC
63
64
PT C
C30
C29
104/50V
104/50V
C25
C24
104/50V
E12
+5V
104/50V
4.7U/16V
C13
C12
104/50V
VCC
VO
IC14 T600D
D11
RLS4148
R15
47
C3
+12V
E22034
102/100V
1
T1
D8
1
10
M BR3100\ER302
E7
C8
R16
470U/25V
1K/0.5W
104/50V
3
9
D7
L3
20UH/1A
6
M BR1100
R23
E5
47
470U/25V
100U/16V
7
CN39
R11 47
C2
102/100V
D6
4
M UR115\ER106
E4
C6
470U/25V
104/50V
5
E9
47U/25V
IC2
PC817A
4
1
R26
1K
3
2
2
1
J64
R5
1.8K
CY8
222/250V
R3
4
D9
IN 4007
2K/2W
3
2
1
J65
R6
1.8K
CY10
222/250V
R4
4
D10
IN 4007
2K/2W
3
CN9
CN10
AC-NOUT
AC-LOUT
PT C1
400N/PSB400
CX3
225/275V
J1
K6
K5
AC-L
AC-L
+12V
AC-N
AC-N
12V-5A-892H(N)-1A C-C
12V-25A-891P-1A-C
30
J40
J43
J57 J59
R90 0
+5V
J9
J10
J16
J38
J41
J44
J56
+5V
+12V
32
NC
31
J11 J14
NC
30
NC
+12V
29
NC
28
NC
27
J61
TXD0
26
RXD0
25
NC
24
HEAT -E N
23
COOL -EN
IC17
22
TE ST-EN
R5F212A 8SNFA
21
NC
20
NC
19
NC
18
A2
17
B2
ERRO R
+5V
R36 2K
LE D1
J53
R77
J45
J55 J21
5.1K/1%
IC6
AT24C04
XT1 4M
5
4
SDA
GND
6
3
SCL
GND
7
2
GND
GND
R35
R60
8
1
VCC
GND
10K
10K
C21
104/50V
IC4
L7805CV
+5V
3
Vin
Vo ut
E8
C9
100U/16V
104/50V
+5V D
CY12
E6
222/250V AC
220 220
CN23
+15V
1
2
3
R12
330/1W
R27
5.1K/1%
IC3
C5
TL431C
R25
104/50V
1K
CN4
1
CY7
222/250V
CN5
1
CN36
COM B
1
2
COM A
3
4
N
5
1
CN46
CY9
222/250V
80
COM
ST
H
M
L
C
COM COM L
J4
J2
R7
CX4
100/1W
103/275V
J3
K2
K4
K3
12V-5A-892H(N)-1A C-C
12V-5A-892-1CC-C
12V-5A-892H(N)-1A C-C
+12V
IC8
IC7
C17
ULN2003
ULN2003
104/50V
R28
5.1K/1%
C11
2SA1037AK
102/50V
1
C10
2
102/50V
CN44
3
TE ST/SS
4
1
5
2
CN34
R85
J20
+5V
R80 1K
1K
R79
E11
10K
47U/25V
IC15
PC817A
1
4
2
3
R8
IC16
PC817A
4
1
330/1W
R78
3
2
330
N1
8050
CN37
CX7
CN38
1
1
105/275V AC
CN31
CX6
CN32
1
1
P
105/275V AC
N
CN29
E3
CN30
1
1
P
820U/400V
N
CN28
E2
CN26
1
1
P
820U/400V
N
CN27
E1
CN25
1
1
P
820U/400V
N
LED 2
R17
220K/2W
POWE R
Domestic air conditioner
Circuit diagrams
CN14 CN13
H
C
C
2U/450V
C1
+12V
CN16
K1
6
5
A2
4
B2
3
C2
2
D2
1
12V-5A-892-1CC-C
CN15
6
5
A1
4
B1
3
C1
2
D1
1
+12V
C18
C22
104/50V
104/50V
+5V
CN24
R29
R87
5V
10K
3
COM
10K
2
GND
R30
1
1K
P1
J60
CN41
CN40
CN42
R84 1K
CX8
104/275V
R81
C31
2.2K
103/50V
10V/0.5W
CN22
ZD2
310V
1
R82 1K
2
0V
3
15V
ZD3
4
5.1V/0.5W
5
6
R83 330
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