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6.APPENDIX
1.Connection of PCB illustration
OUT3
OUT4
OUT5
AC-N
CN1 CN2
Connections explanation：
No.
Symbol
1
2
3
4
5
6
7
NET GND 12V
DI01 GND
8
9
DI02 GND
10
DI03 GND
11
DI04 GND
12
DI05 GND
13
DI06 GND
14
AI01 GND
15
AI02 GND
16
AI03 GND
17
AI04 GND
18
AI05 GND
19
AI06 GND
20
21
22
23
24
5V CN16 GND
OUT1
OUT2
3
3
4
PC1001
Compressor of system1（220-230VAC）
OUT1
Water pump（220-230VAC）
OUT2
4way valve （220-230VAC）
OUT3
High speed of fan motor（220-230VAC）
OUT4
Low speed of fan motor（220-230VAC）
OUT5
AC-N
Neutral wire
Wire controller
On/Off Switch(input)(no use)
Flow switch (input)( normal close)
Low pressure protect
High pressure protect
No use
No use
Suction temp.(input)
Water in temp.(input)
Water out temp.(input)
Temp. Of coil ( input)
Ambient temp.(input)
Adjustable fan speed/Exhaust temperature
Primary transformer
CN1
Secondary transformer
CN2
Without use
CN6
Electronic expansion valve
CN19
Flow meter
CN19
CN6
CN4
4
GND
AI06
GND
AI05
GND
AI04
GND
AI03
GND
AI02
GND
AI01
+5V
CN16
GND
CN3
Meaning
19
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