Bosch Climate 5000 Series Service Manual page 53

Service Manual
DC fan motor(control chip is inside fan motor)
Power on and when the unit is in standby, measure the voltage of pin1-pin3,
pin3-pin4 in fan motor connector. If the value of the voltage is not in the range
showing in below table, the PCB must have problems and need to be replaced.
Figure 60
Figure 61
Bosch Thermotechnology Corp. | 08.2020
Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units | 53
Vs
Vsp
DC motor voltage input and output
NO. Color Signal
1 Red Vs/Vm
2 ---
3 Black GND
4 White Vcc
5 Yellow Vsp
6 Blue
Table 26
Vcc
FG
Voltage
200~380V
--- ---
0V
13.5~16.5V
0~6.5V
FG 13.5~16.5V
Data subject to change