Bosch Climate 5000 Series Service Manual page 32

Service Manual
7.3.4 PCB: Regular Single Zone 18K & 24K
BMS500-AAS018-1CSXRC, BMS500-AAS024-1CSXRC
Figure 27
Number Name
1 Power Supply (CN3)
2 S
3 4-WAY
4 AC-FAN
5 HEAT2
6 T5 T4 T3
7 PMV
8 HEAT1
9 DC-FAN
10 TESTPORT
11 FAN_IPM
12 COMP_IPM
U
13 V
W
14 EE_PORT
Table 18
3 2 |
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.
CN5 connect to AC fan
CN19 connect to chassis heater, 208-230V AC when is ON
CN17 connect to pipe temp. sensor T3, ambient temp. sensor T4, exhaust temp. sensor T5
CN18 connect to Electric Expansion Valve
CN16 connect to compressor heater, 208-230V AC when is ON
CN414 connect to DC fan
CN23 used for testing
IPM501 IPM for DC fan
IPM1 IPM for compressor
CN27 connect to compressor
CN28 0V AC (standby)
CN29 10-200V AC (running)
CN505 EEPROM programmer port
Bosch Climate 5000 Series Ducted Type (Medium & High Static) Air Conditioner / Heat Pump (11.2022)