27
The main controller terminals
The main controller terminals
28
7.1 The main controller terminals
2
4
V
A
C
2
4
V
A
C
R
O
1
1
R
O
1
0
R
O
0
9
R
O
0
8
R
O
0
7
R
O
0
6
R
O
0
5
R
O
0
4
R
O
0
3
R
O
0
2
R
O
0
1
L
N
CN8
POWER
G
N
D
G
N
D
G
N
D
G
N
D
G
N
D
G
N
D
G
N
D
G
N
D
G
N
D
G
N
D
G
N
D
G
N
D
G
N
D
G
N
D
G
N
D
G
N
D
G
N
D
G
N
D
G
N
D
G
N
D
G
N
D
G
N
D
G
N
D
G
N
D
G
N
D
G
N
D
G
N
D
G
N
D
+
1
2
V
+
5
V
0
-1
0
V
_
O
U
T
2
0
-1
0
V
_
O
U
T
1
P
W
M
_
O
U
T
2
P
W
M
_
O
U
T
1
P
W
M
_
IN
0
-5
V
_
IN
3
0
-5
V
_
IN
2
0
-5
V
_
IN
1
A
I
1
8
(5
0
K
)
A
I
1
7
(5
0
K
)
A
I/
D
I
1
6
A
I/
D
I
1
5
A
I/
D
I
1
4
A
I/
D
I
1
3
A
I/
D
I
1
2
A
I/
D
I
1
1
A
I/
D
I
1
0
A
I/
D
I
0
9
A
I/
D
I
0
8
A
I/
D
I
0
7
A
I/
D
I
0
6
A
I/
D
I
0
5
A
I/
D
I
0
4
A
I/
D
I
0
3
A
I/
D
I
0
2
A
I/
D
I
0
1
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1
9
1
8
1
7
1
6
1
5
1
4
1
3
1
2
1
1
1
0
0
9
0
8
0
7
0
6
0
5
0
4
0
3
0
2
0
1
J1
CN9
N
L
CN1
CN2
CN5
1
2
V
4
8
5
_
A
4
8
5
_
B
G
N
D
1
2
V
4
8
5
_
A
4
8
5
_
B
G
N
D
0
1
0
2
0
3
0
4
0
1
0
2
0
3
0
4
1
2
3
4
5
1
2
3
4
5
1
2
1
2
3
4
1
2
V
R
T
A
B
G
Sign
Meaning
V
R
T
A
B
G
7.1.1 Wire control interface diagram and definition
12V
(
power +
)
No use
No use
485A
485B
GND(power-)
7.1.2 Controller interface diagram and definition
CN4
PC4002
AI/DI01
AI/DI02
AI/DI03
AI/DI04
AI/DI05
AI/DI06
AI/DI07
AI/DI08
AI/DI09
AI/DI10
AI/DI11
AI/DI12
AI/DI13
AI/DI14
AI/DI15
AI/DI16
AI17
(
50K
)
AI18
(
50k
)
0~5V_IN1
0~5V_IN2
0~5V_IN3
PWM_IN
PWM_OUT1
PWM_OUT2
Overload switch of electric heater
预 留
12V output
5V
输出
0~10V OUT1
0~10V OUT2
+12V
+5V
CN2
CN4
CN5
CN8
CN9
Electronic expansion valve of EVI in system 1
J1
RO11
RO10
RO09
RO08
RO07
Electromagnetic three-way valve 2
Electromagnetic three-way valve 1
Hot water pump
Alarm output
AUX superheat
CN1
Communication ports on the expansion board
Temperature of the EVI outlet of system 1
No use
5V output
Temperature of the EVI inlet of system 1
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Water output temperature
Water intput temperature
System 1 coil temperature
Ambient temperature
System 1 suction temperature
Water flow switch protection
Mode switch
No use
No use
No use
System Exhaust temperature 1
Emergency switch iutput
Fan control output
Electronic expansion valve 1
Number
Sign
Meaning
pressure sensor 1
System 1 compressor current detection
Main board of the input and output interface instructions below
The high-preesure switch 1
The low-preesure switch 1
Color line controller
System1 Antifreeze 1 Temperature /
Syetem 1 Coil temperature 2
System1 Antifreeze 2 Temperature
Water tank Temperature
System1 Antifreeze 4 Temperature
Centralized control port
Transformer primary voltage
Transformer secondary voltage
System flow meter (reserved)