ENG
1) PCB B, Main control board
Coding
1
Output port N to PCB A(CN27)
2
Reserved(CN3)
3
Port for ground wire(CN31)
4
Port for IC programming(CN32)
5
Port for ground wire(CN37)
64
Input port for neutral wire(CN10)
7
Input port for live wire(CN11)
8
DIP switch(SW3)
9
Input port for +12V/5V(CN24)
Port for low pressure switch and
10
high pressure switch(CN13)
Port for discharge
11
temp.sensor(CN8)
Port for outdoor ambient
12
temp. sensor and condenser
temp.sensor(CN9)
13
Port for sunction temp.sensor(CN1)
14
Port for TF temp.sensor(CN14)
Assembly unit
Coding
15
Port for pressure sensor(CN4)
16
Reserved(CN2)
Port for communication with hydro‐
17
box control board (CN29)
18
Reserved(CN30)
Port for communication with PCB
19
A(CN17)
20
Port for electrical expansion value(CN33)
21
Digital display(DSP1)
Port for chassis electrical heating
22
tape(CN16)(optional)
23
Port for SV6 value(CN5)
24
Port for 4‐way value(CN6)
Port for compressor eletric heating tape
25
1(CN7)
Port for compressor eletric heating tape
26
2(CN8)
27
Ourput port L to PCB A(CN28)
29
-
VIVAX
Assembly unit