Bosch BOVB 18 Series Installation Instructions Manual page 30

3 0 | Bosch IDS BOVB 18
Main Control Board for 48/60 ODU Model
24
25
26
27
28
29
30
Figure 46
Data subject to change
19
18
17
16
21
15
23
22 20
No. Function description
1 Pressure equalizer valve port
2 Compressor crankcase heater port
3 Reversing valve port
4 Thermostat wire connections
5 EEV port
14
6 Reserve
13
7 Reserve
12
8 T3 T4 sensor port
11
9 Pressure transducer port
10
10 T5 sensor port
9
11 Reserve
8
12 Reserve
7
13 Reserve
14 High pressure switch port
6
5
15 USB port
16 SW2 FORCE BUTTON
4
17 SW3 CHECK BUTTON
18 J2 Dip SWITCH: Select capacity
3
19 SW5 Dip SWITCH:Defrost logic settings
20 SW4 Dip SWITCH:Control logic settings
21 Reserve
22 IC20 ： EEPROM Chip
23 LED
24 IC14 ： Drive EEPROM Chip
25 ECM motor port
26 Compressor: W port
27 Compressor: V port
2
28 Compressor: U port
1
29 Power input
30 Power input
10.2020 | Bosch Thermotechnology Corp.
Installation Instructions