Wiring Diagrams; Odu Pcb & Ipm - Bosch Climate 5000 Series Service Manual

2 2 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit

7 Wiring Diagrams

7.1 ODU PCB & IPM
7.1.1 PCB: Regular 115V Single Zone 12K
BMS500-AAS012-0CSXRB
Figure 12
Number Name
1 Power Supply
2 S
3 HEAT1
4 4-WAY
5 AC-FAN
6 TP T4 T3
7 HEAT2
8 PMV
9 DC-FAN
10 FAN_IPM
11 TESTPORT
12 EE_PORT
13 MCUPORT
W
14 V
U
15 COMP_IPM
16 BR1
Table 16
Data subject to change
CN# Description
CN3 Earth: connect to Ground
CN1 N_in: connect to N-line (100-130V AC input)
CN2 L_in: connect to L-line (100-130V AC input)
CN16 S: connect to indoor unit communication
CN17 connect to compressor heater, 100-130V AC when is ON
CN60 connect to 4 way valve, 100-130V AC when is ON.
CN25 connect to AC fan
CN21 connect to pipe temp. sensor T3, ambient temp. sensor T4, exhaust temp. sensor TP
CN15 connect to chassis heater, 100-130V AC when is ON
CN31 connect to Electric Expansion Valve
CN7 connect to DC fan
IPM 501 IPM for DC fan
CN6 used for testing
CN505 EEPROM programmer port
CN507 connect to PC communication
CN28 connect to compressor
CN29 0V AC (standby)
CN30 10-230V AC (running)
IPM 301 IPM for compressor
BR1 Bridge
Service Manual
04.2020 | Bosch Thermotechnology Corp.