Bosch Climate 5000 Series Service Manual page 68

6 8 | Bosch Climate 5000 Series Ductless Air Conditioner / Heat Pump Multi Zone Outdoor Units
3. IPM continuity check
WARNING: ELECTRICAL HAZARD
Electricity remains in capacitors even when the power
supply is off. Ensure the capacitors are fully discharged
before trouble shooting.
Turn off the power, let the large capacity electrolytic capacitors discharge completely, then dismount the IPM. Use a digital tester to measure the resistance between P and
UVWN; UVW and N.
Digital tester
(+)Red (-)Black
N
U
P
V
W
Table 37
Figure 75
Data subject to change
Normal resistance value
(Several M )
Digital tester
(+)Red (-)Black
U
V
N
W
(+)Red
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Service Manual
Normal resistance value
(Several M )