Haier HSU-18HEA03/R2(DB)-I Service Manual page 111

1
CN2
FUSE1
1
D
T25A 250VAC
AC -L R1
RV1 CX1
CN1 1M
S14K350 225/275V
1
AC -N
RV2 RV3
CN3 SA1
S14K350 S14K350
1
PE RA-362M
RXD2 RXD2 IC13
TXD2 TXD2
Y0 VDD
RXD1 RXD1
Y2 X2
TXD1 TXD1 J66
Y X1
Y3 X
Y1 X0
C
INH X3
VEE A
VSS B
MC14052
R93 IC5
0
Y0 VDD
+5V
R73 R76 Y2 X2
CN21
4.7K/1% 4.7K/1% Y X1
XG-A
4 Y3 X
R74
5V E18 J62
3 Y1 X0
5V 4.7U/16V
1K
2 INH X3
CG-A E19
1 VEE A
R75
4.7U/16V
VSS B
CN20
1K
XG-B MC14052
4
5V E16
R70 1K
3 C23
5V 4.7U/16V
2 104/50V
CG-B E17
B 1
R71
4.7U/16V
CN19
1K
5V
3
C28 C27 C30 C29
E15
2
HW 4.7U/16V
104/50V 104/50V 104/50V
1
C26 C25 C24
CN18 4.7U/16V
5V E14
104/50V
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
A GND 1 4
104/50V
1
5V 2 R91 3
2 +5V
RST J29 0 2
3 R37
MODE 1
4 10K
J28 CN35
FLASH
1
1
AC-L
AC-N
D4 D3 D2 D1
IN4007 IN4007 IN4007 IN4007
NTC1
E22034
SCK-4R72
T1
E10
47U/450V 1
CY11
472/1KV
3
D5
CX5 IN4937\ER106
104/275V
ZD1
IN5948B R19
5.1K/1%
IC1
R18
1 8
ADJ HV
10K
2 7
FB NC
R92 0
3 6
CS VCC
J8 4 5
GND DRV
NCP1200P100
R20
R22
1K
15
E9
R21
M1 47U/25V
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
TXD2
TLP851/PC851
IC10
C15
3
102/50V
R41
4
RXD1
1K
TLP421/PS2561
R42
+5V
2K
R43 IC9
1
1K
2
TXD1
TLP851/PC851
HSU-18HEA03/R2(DB)-I
Outdoor Unit control board Circuit Diagrams
2
CN7 CN6 CN9
AC -L OUT AC -N OUT AC-N OUT
L1 L2
R2
CX2 CX3
1M
225/275V 225/275V
8MH/20A 8MH/20A J1
472/250V/275V
CY5 CY6
AC -L AC -L
472/250V/275V AC -N AC -N
CN8
1
J12 J15 J27 J30 J40 J43 J57 J59
+5V
PE
J49
J39
J48
+5V
49
4052-A
50
CG
51
HW
52
CS
53
XG
54
TC
55
NC
56
NC
57
58
59 IC17
VSS/AVSS
60 R5F212A7SNFA
61
VR EF
62
VC C
63
64
PTC
J53
E12
+5V 104/50V 4.7U/16V
C13 C12
104/50V
XT1 4M
VC C VO
IC14 T600D R35 R60
D11 10K 10K
RLS4148
2
2
R15
47
C3
+12V IC4 L7805CV
102/100V
1
Vin
D8
10 MBR3100\ER302
E7 C8
R16
470U/25V
1K/0.5W
104/50V
9
D7 L3
20UH/1A
6 MBR1100
R23
E5 E6
47
470U/25V 100U/16V
7
CN39
R11 47
C2
+15V
102/100V
D6
4 MUR115\ER106
R12
E4 C6
330/1W
470U/25V 104/50V
5
IC2 PC817A
4 1 C5
R26 R25
104/50V
1K 1K
3 2
2
1 J64 R5
1.8K
CY8 CY7
222/250V 222/250V
R3
4 D9
IN4007
2K/2W
3
2
1 J65 R6
1.8K
CY10 CY9
222/250V 222/250V
R4
4 D10
IN4007
2K/2W
3
3
CN10
AC -L OUT
COM ST
PTC1
J4
J2
470N
R7
CX4
100/1W
103/275V
K6 K5 K4
+12V
12V-5A-892H(N)-1AC-C 12V-5A-892H(N)-1AC-C
12V-25A-891P-1A-C 12V-5A-892H(N)-1AC-C
R90 0
+5V
J9 J10 J16 J38 J41 J44 J56
IC8
ULN2003
+5V
+12V
32
NC
31 J11 J14
NC
30
NC +12V
29
NC
28
NC
27 J61
TXD0
26
RXD0
25
NC
24
HEAT-EN
23
COOL-EN
22
TEST-EN
21
NC CN44
20
NC TEST/SS
19
NC
18 1
A2
17 2
B2
+5V
R79
10K
ERR OR +5V
1
R36 2K LED1
2
4
R78
3
330
R77
J45 J55 J21
5.1K/1%
IC6 AT24C 02B N1
5 4 2SC2412K
SDA GND
6 3
SCL GND
7 2
GND GND
8 1
VC C GND
C21
104/50V
3
+5V
3
Vout
E8 C9
100U/16V 104/50V
+5VD
CN37
CY12
1
222/250VAC
220 220
CN23 CN31
1 1
2
P
3
CN29
1
R27 P
5.1K/1%
IC3
TL431C
CN28
1
P
CN27
CN4
1
1
P
CN5
1
CN36
R17
COMB
1
220K/2W
2
COMA
3
4
N
5
1
CN46
66
109
4
CN14 CN13
H M L C COM COM L H
C C
2U/450V
C1
J3 +12V CN16
K2 K1
K3
6
5
A2
4
B2
3
C2
2
D2
1
CN15
12V-5A-892-1CC-C 12V-5A-892-1C C-C
6
5
A1
4
B1
3
C1
2
D1
1
+12V +12V
IC7
C17 C18 C22
ULN2003
104/50V 104/50V 104/50V
+5V
CN24
R29
R87
5V
10K 3
COM
10K
2
GND
R30 1
1K
R28
4.7K/1%
P1 J60
C11
2SA1037AK
102/50V
1
C10
2
102/50V
3
CN41 CN40 CN42
4
5
CN34
R85 R84 1K
J20 CX8
104/275V
R80 1K 1K
R81
C31
2K
103/50V
E11
47U/25V
IC15 PC817A
10V/0.5W
4 CN22
310V
ZD2
1
3
R82 1K
2
0V
R8
3
IC16 PC817A
1 330/1W ZD3 15V
4
5.1V/0.5W
5
2
6
R83 330
4
3
CX7 CN38
1
105/275VAC
CX6 CN32
1
105/275VAC N
E3 CN30
1
820U/400V N
E2 CN26
1
820U/400V N
E1 CN25
1
820U/400V N
LED2
POWER
Domestic Air Conditioner
Appendix
D
C
B
A