Bosch SHI4302 Manual page 74

VIII. Troubleshooting
VIII. Troubleshooting
Circulation Pump
Circulation Pump
Terminal located on motor.
NOTE: Motor terminals 2 -
3 and one
terminals are tied together.
- Checking PTC Pump Motor Starter (2)
- Checking PTC Pump Motor Starter (2)
3 2 4
1
of the PTC
PTC
TECH
measurements:
Between terminals 1 - 2 is ~
7 Ω (one of the main run
windings).
Won't
terminals
winding, a run winding & the
motor starter).
starter can't be measured
Apexx
model
since
shown
always connected.
disconnect
measure its continuity.
Terminal located
on motor starter.
2
3 2 4 1
NOTE: Apexx (SH_99)
models shown.
colors will change for
other models.
NOTE: Unlike standard two-winding pump
motors, these three-winding pump motors
have four terminals instead of three.
72
Resistance
TIPS:
help between
2 - 4 (start
The motor
the windings
Must
PTC 1st
Wire
are
to