Midea MSE-18CR Technical & Service Manual

15
6. Schematic diagram and wiring diagram
6.1 Schematic diagram
1 2 3 4 5 6 78
A
B
C
D
8
7654321
D
C
B
A
C1
104
Vin
1
GND
2
Vo ut
3
IC 3 7 8 0 5
+5V
E3
470uF/16V
E1
2200uF/25V
C4
104
D4
D3
D2
D1
Vin
1
GND
2
Vo ut
3
IC 1 7 8 1 2
+12V-a
E2
1000uF/16V
C3
104
X1
4M
R7
1M
A0
1
A1
2
A2
3
GND
4
SDA
5
SCL
6
WC
7
VCC
8
IC 2
24C04
+5V C2
104
R2
10K
R1
10K
SDA
SDA
SCL
SCL
C5
104
+5V
R4 12K
1
2
3
IC 5 KIA 7 0 4 2
RST
RST
BUZ1
BUZZER1
R5
1K
+12V
R27
2K
Q3
9014
BUZ
BUZ
E4
10uF/16V
R8
8.1K/1%
C6
104
R10 2K
D6
IN4148
D5
IN4148
+5V
1
2
CN2
T1_room
T1_room
T1_room
E5
10uF/16V
R9
8.1K/1%
C7
104
R11 2K
D8
IN4 1 4 8
D7
IN4 1 4 8
+5V
1
2
CN3
T2_I.p ipe
T2_ I.p ip e
T2_ I.p ip e
CT1
0057h
D1 0
1N4148
R14
1.4K/1%
R6
1K/1%
R13
16K
E6
10uF/16V
D9
1N4148
R12 2K
C8
104
+5V
Current
C u rren t
Q2
9014
R15
12K
C9
104
D1 1 1 N414 8
D1 2 1 N414 8
R16 12K
R17
12K
R18 10K
+5V ZERO
ZERO
A
B
B
A
E7
10uF/16V
C10
102
R19 150
+5V
R20 1K
C11
104
REC
REC
R215.1K
D1 3
IN4 1 4 8
C12
103
+5V
1
2
3
CN4
FAN_BACK
+12V-a
FANSP_ FEEDBACK
FANSP_ FEEDBACK
REC
V
GND
REC1
RECEIVER_V
JR7
10K
C13
104
R23 2K
+5V
AUTO_ SELECT
AUTO_ SELECT
C14
1.2uF/450V
IC 6 P C 81 7
T1T2
G
TR1
BT131
L2
?
C15
333
R242K
+12V-a
R26
1K
E9
470uF/25V
R28
11K/2W
Z1
12V
D1 5
IN4 0 07
R29
11K/2W
L1
N
R25 51/1W
FAN_I N '
FAN_IN
IN1
1
IN2
2
IN3
3
IN4
4
IN5
5
IN6
6
IN7
7
VSS
8
VDD
9
OUT7
10
OUT6
11
OUT5
12
OUT4
13
OUT3
14
OUT2
15
OUT1
16
IC 7
UJN2003
STEP_I2
STEP_I1
STEP_I3
STEP_I4
STEP_I2
STEP_I1
STEP_I3
STEP_I4
+12V-a
C19
104
1
2
3
4
5
CN12
SWING
FAN_IN '
FAN_I N
BUZ '
BUZ '
COMP
COMP
COMP '
COMP '
RY2
RELAY-SPST
+12V-a
D21
IN4148
R33
2K
Q5
9014
RY3
RELAY-SPST
+12V-a
D2 2
IN4 1 48
R34
2K
Q6
9014
RY4
RELAY-SPST
+12V-a
D23
IN4148
R35
2K
Q7
9014
RY5
RELAY-SPST
+12V-a
D24
IN4148
C20
333
R36
51/1W
VALVE
VALVE
FAN_OUT
FAN_OUT
HEAT
HEAT
RY6
COMP
C21
333
R37
51/1W
+12V-a
1
CN14
N
L(POWER_IN PORT)
LOAD_C OMP
N
FUSE1
3.15A/250V
L1
L1
FRESH
FUSE2
10A
LOAD_VA LVE
LOAD_ FAN OUT
LOAD_HEAT L
LOAD_HEAT N
1
CN11
N
1
CN10
HEAT_L
1
CN9
HEAT_N
1
2
CN13
ZR1
10D471K
C23
0.1uF/275VAC
1
2
CN15
TRANS_IN
SW1
t
PTC
82RM
R39
5.1K
C22
104
R38
10K
+5V
SW_TEST
SW_TEST
Onl y For Hea t Pump
Dsa
1
Dsb
2
Q0
3
Q1
4
Q2
5
Q3
6
GND
7
CP
8
MR
9
Q4
10
Q5
11
Q6
12
Q7
13
Vcc
14
IC 8
74HC164
+5V
+5V
COM1
COM2
COM3SEG1
SEG2
SEG3
SEG4
R60
10K
R59
10K
+5V
C24
104
SEG3
SEG4
Q8
9012
Q9
9012
Q1 0
9012
R44
330
R45 330
R46 330
R47 330
R48 330
R49 330
R54 330
R55 330
R41
2K
R42
2K
R43
2K
LED6
自动
LED7
化霜
LED8
定时
+5V
a
b
c
d
e f
g h
com1 com2
DIS1
WT4021BG
COM1 COM2 COM3
LED9
运行灯
1
2
3
4
5
CN6
FAN_I N
+12V-a
COM1
COM2
COM3SEG1
SEG2
SEG3
SEG4
SCL
SDA
T1
T2
CURRENT
AUTO_SELECT SW
STEP_I1
STEP_I2
STEP_I3
STEP_I4
FAN_I N
BUZ
COMP
VALVE
FAN_OUT
ZERO
FANSP
REC
HEAT
FRESH
RST
X2
X1
C25
104
+5V
IN4 0 0 7 * 4
VSS0
1
VDD0
2
P25
3
P26
4
P00
5
P01
6
P02
7
P03
8
P04
9
VSS1
10
P05
11
P50
12
P51
13
P52
14
P53
15
AVDD
16
AVREF
17
AN1 0
18
AN1 1
19
AN1 2
20
AN1 3
21
AN1 4
22
AN1 5
23
AVSS
24
P10
25
P11
26
P30
27
P31
28
P32
29
P33
30
P20
31
VDD1
32
P21
33
P22
34
P23
35
P24
36
Vp p/IC
37
XT2
38
XT1
39
RESET
40
X2
41
X1
42
IC 4
UPD78 9 166
+5V
C26
104
JR1
10K
JR3 10K
JR2
10K
JR5 10K
JR4
10K
+5V
C16
102
C17
102
JR6
10K
JR8
10K
JR9
10K
+5V
R41
10K
R41
10K
R41
10K
+5V +5V
FRESH
R61
2K
Q1 1
9014
R62
1K
IC 9
PC817
SW2
+12V-a +12V-b
R63
5.1K
Q1 2
9014
GNDB
+12V-b 1
2
CN16
C23
104
E10
2200uF/25V
D1 9
D1 8
D1 7
D1 6
Vin
1
GND
2
Vo ut
3
IC10 7812
+12V-b
E11
1000uF/16V
C24
104
C
D
IN4 0 0 7 * 4
1
2
3
4
CN1
TRANS
GNDB

Midea MSE-18CR Specifications

General

Brand	Midea
Model	MSE-18CR
Category	Air Conditioner
Language	English