Bosch Climate 5000 Series Service Manual page 31

7.3.3 PCB: Max Performance Single Zone 18K
BMS500-AAS018-1CSXHC
Figure 25
Number Name
1 Power Supply (CN3)
2 S
3 4-WAY
4 HEAT1
5 AC-FAN
6 HEAT2
7 PMV
8 T5 T4 T3
9 DC-FAN
10 TESTPORT
11 FAN_IPM
12 EE_PORT
U
13 V
W
14 COMP_IPM
Table 17
Bosch Wall Mounted Ductless Split Air Conditioner / Heat Pump IDU-ODU - BTC 769102301 A (11.2022)
CN# Description
CN6 Earth: connect to Ground
CN7 N_in: connect to N-line (208-230V AC input)
CN8 L_in: connect to L-line (208-230V AC input)
CN2 S: connect to indoor unit communication
CN60 connect to 4 way valve, 208-230V AC when is ON.
CN16 connect to compressor heater, 208-230V AC when is ON
CN5 connect to AC fan
CN19 connect to chassis heater, 208-230V AC when is ON
CN18 connect to Electric Expansion Valve
CN17 connect to pipe temp. sensor T3, ambient temp. sensor T4, exhaust temp. sensor T5
CN41 connect to DC fan
CN6 used for testing
IPM2 IPM for DC fan
CN505 EEPROM programmer port
CN28 connect to compressor
CN29 0V AC (standby)
CN30 10-200V AC (running)
IPM 301 IPM for compressor
Service Manual
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