Control Module - Modules Displaying “1” - Bosch SHI4302 Manual

VIII. Troubleshooting
VIII. Troubleshooting
Control Module
Control Module
Occasionally dishwashers will run for hours, not finish washing & show a "1"
in the display. This means the module has timed out due to an unidentified
heating problem -- all heating related parts must be checked until the
problem is found.
If no, module
is working
fine.
The heating
NOTE:
problem must be fixed
before the module will
reset and stop showing
a "1" in the display.
Replacing
NTC's
replaces
Limit's.
NTC (~ 55kΩ
@72ºF)
Replacing heaters also
replaces
switches & Hi-Limit's.
- Modules Displaying "1"
- Modules Displaying "1"
NO
stopped washing
and is showing a
also
Hi-
Control
module
(heater
Heater (~ 11Ω)
NTC's, flow
IMPORTANT:
module display, the module must be reset (after the
heating problem has been fixed) by running the
dishwasher. The module resets after the 1
START
Has dishwasher
"1" in the
display?
relay)
Flow Switch
(~ 0.4Ω)
68
Whenever a "1" shows in the
If yes, control
YES
module has timed
out showing
there's an
unidentified heater
problem.
Have these
parts been
checked??
High Limit
Harness
(~ 0.3Ω)
Check module heater
HINT:
relays, wire harnesses
connections & heaters before
checking NTC's, flow switches
& high limits.
run.
st
Wire
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