Bosch SHI4302 Manual page 68

VIII. Troubleshooting
VIII. Troubleshooting
The following parts can't be serviced from the front of the dishwasher (the
NOTE:
dishwasher must be pulled out and the tank removed or tilted/blocked up to replace them):
•·
Heater
•·
Circulation motor
•· Aqua sensor – can be reached without blocking up tank
•· NTC (temperature probe)/Hi-Limit (185ºF) thermostat
On electronic models, run test program to identify dishwasher problems. The test
NOTE:
can run 20 minutes or more (to get temperature up to 150ºF), but tests can be cancelled to
shorten testing time. The test program allows draining, filling, circulating and heating to be
checked more quickly than running a standard wash cycle.
To use test program for troubleshooting, measure voltages/currents as parts come on. For
example, run heating test and measure current coming into dishwasher – if current ≈ 11A, Hi-
Limit, heater and flow switch are OK. If not, check each part to see which one failed. This test
saves time since you can't get to these parts without removing the tank and can't run resistance
checks from front of dishwasher because flow switch stays open.
Jumpers aren't included with SHU/I 43/53 replacement modules – take jumper off
NOTE:
old module and put it on new module.
An "F" fault code in the display shows there's a filling problem (not filling,
NOTE:
overfilling, underfilling or water in the base). The fault code can't be reset manually – it will
reset itself 15 minutes after the dishwasher has been turned on (after testing how it fills).
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