Wellea Monobloc
34
Table 4-2.2:
5/7/9kW
outdoor unit main PCB for refrigerant system
Label in Figure
4-2.2
Code
Content
1
CN27
Output port N for invert module PCB
2
CN3
Output port N for hydro-box control board
3
CN31
Port for ground wire
4
CN32
Port for IC programming
5
CN37
Port for ground wire
6
CN10
Input port for neutral wire
7
CN11
Input port for live wire
8
SW3
DIP switch
9
CN24
Input port for +12V/5V
10
CN13
Port for low pressure switch and high pressure switch
11
CN8
Port for Tp temp. sensor
12
CN9
Port for outdoor ambient temp. sensor and condenser temp. sensor
13
CN1
Port for Th temp. sensor
14
CN14
Port for TF temp. sensor
15
CN4
Port for pressure sensor
16
CN2
Reserved
17
CN29
Port for communication with hydro-box control board
18
CN30
Reserved
19
CN17
Port for communication with invert module PCB
20
CN33
Port for electrical expansion value
21
DSP1
Digital display
23
CN5
Port for SV6 value
24
CN6
Port for 4-way value
25
CN7
Port for compressor electric heating tape1
26
CN8
Port for compressor electric heating tape2
27
CN28
Output port L for invert module PCB
28
RL2
Output port L for hydro-box control board
29
IC23
EEPROM
