Bosch Climate 5000 Series Service Manual page 23

Service Manual
7.1.2 PCB: Regular Single Zone 9K & 12K
BMS500-AAS009-1CSXRA, BMS500-AAS009-1CSXXA, BMS500-AAS012-
1CSXRA, BMS500-AAS012-1CSXXA
Figure 13
Number Name
1 Power Supply
2 S
3 HEAT1
4 4-WAY
5 HEAT2
6 AC-FAN
7 TP T4 T3
8 TP T4 T3
9 PMV
10 DC-FAN
11 FAN_IPM
12 TESTPORT
13 EE_PORT
14 MCUPORT
W
15 V
U
16 COMP_IPM
17 CN9
18 CN32
Table 17
Bosch Thermotechnology Corp. | 04.2020
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Outdoor Unit | 23
CN# Description
CN3 Earth: connect to Ground
CN1 N_in: connect to N-line (208-230V AC input)
CN2 L_in: connect to L-line (208-230V AC input)
CN16 S: connect to indoor unit communication
CN17 connect to compressor heater, 208-230V AC when ON
CN60 connect to 4 way valve, 208-230V AC when ON.
CN15 connect to chassis heater, 208-230V AC when ON
CN25 connect to AC fan
CN22 connect to pipe temp. sensor T3, ambient temp. sensor T4, exhaust temp. sensor TP
CN21 connect to pipe temp. sensor T3, ambient temp. sensor T4, exhaust temp. sensor TP
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 10-200V AC (running)
IPM 301 IPM for compressor
CN9 connect to reactor
CN32 connect to reactor
Data subject to change