Bosch Climate 5000 Series Service Manual page 42

4 2 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units
Note:
Use a multimeter to test the DC voltage between 2 (old: L2) port and 3
port of outdoor unit. The red pin of multimeter connects with 2 (old: L2)
port while the black pin is for 3 port. When AC is normal running, the
voltage will move alternately between positive value and negative value.
Figure 42
IPM board (18K & 27K Models):
Figure 43
Data subject to change
IPM board - Regular: 36K & 48K Models / HyperHeat: 27K & 36K Models:
Figure 44
Figure 45
Opera ng
Standby
Service Manual
Opera ng Opera ng
Standby
Power
Check point
button, press
1 time to
check how
many indoor
units are
connected.
08.2020 | Bosch Thermotechnology Corp.