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Shu 43/53/68 Dishwasher Test Programs - Bosch SHI 4302 Troubleshooting Tips

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SHI/U 43/53/68 Dishwasher Test Programs
TEST*
Draining
Aqua Sensor
Calibration
("Sensotronic")
Filling
Heating & Circulating
Draining
* To skip a test:
SHI/U 43—MODELS
To start test program, press and hold both POWER SCRUB PLUS and REGULAR WASH program buttons, then turn unit
on by pressing ON/OFF button. When program buttons are released, lights above them will flash. To end test program,
press ON/OFF button.
To check each program indicator light, press its button.
To start testing, press both POWER SCRUB PLUS and REGULAR WASH buttons a second time. When testing has
ended and a fault was detected, the following indicator lights will be lit:
=
Heater fault
WASH
=
Water filling fault (over or under filling)
RINSE/DRY
=
NTC (temperature sensor) fault – note circulation motor stops shortly after it started during an
CLEAN
To check for heater, high limit or flow switch problems, start testing until heating starts. Using a meter with a current coil,
measure current going into dishwasher. If current is ~ 11 A, then heater, high limit and flow switch are OK. If current stays
at ~ 1.5-2 A, then heater, high limit or flow switch are faulty.
If water level switch (f 1 ) has failed (opened), RINSE/DRY light will come on and unit will continually fill and drain where
testing won't be completed. If flow switch (e 5 ) has failed (opened), water won't heat (to 150
circulating. If NTC probe (f 2 / f 4 ) has failed (opened), CLEAN light will come on immediately and testing will end shortly
after water has started circulating.
If more than one fault occurs, more than one light will be lit.
SHU 43 models program buttons & indicator lights:
Power
Scrub
Plus
See page F-
1B for SHU
4322/4326
models, F-1C
for SHU 53
models and
page F-1D
for SHI/U 68
models
st
1
Edition/Revision 2
30 seconds
65 seconds
Until Water Level Switch (f1) closes
Until water temperature reaches 150
60 seconds
SHI/U 43 models
SHI/U 53/ 68 models
NTC fault
Scrub
Regular
Wash
Wash
¢ ¢ ¢ ¢
¢ ¢ ¢ ¢
¢ ¢ ¢ ¢
l l l l
l l l l
Cancel
Drain
TIME
º
º
F (65
C)
Rinse
& Hold
¢ ¢ ¢ ¢
Page F-1A
NOTES
Not on SHI/U 43-- models
Can't skip this test
Dispenser actuator comes on
Press SCRUB WASH button.
Press REGULAR WASH button.
º
F) and water won't stop
Wash
Rinse/
Dry
¢ ¢ ¢ ¢
¢ ¢ ¢ ¢
Tuesday, June 27, 2000
Clean
¢ ¢ ¢ ¢

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