Bosch SHI 4302 Troubleshooting Tips page 33

B
SHU 99 Dishwasher Test Program
TEST*
Draining
Filling
Heating & Circulating
(water circulates before unit stops filling)
Draining
*To skip Heating & Circulating test:
SHU 991x UC/06 & UC/11 (Integra) MODELS
To start test program, press and hold both POWER SCRUB PLUS and QUICK 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 program indicator lights (POWER SCRUB PLUS, REGULAR WASH, QUICK WASH and RINSE & HOLD),
press and hold each program button. When REGULAR WASH program button is pressed, CLEAN light also comes on
and an audible tone ("beep") also occurs.
To start testing, press both POWER SCRUB PLUS and QUICK WASH buttons a second time. When testing has ended
and a fault was detected, the following indicator lights will be lit:
POWER SCRUB PLUS
REGULAR WASH
QUICK WASH
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), REGULAR WASH 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), QUICK WASH 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 991x UC/06 & UC/11 (Integra) models program buttons & indicator lights:
See page F-3A for SHU 9902/9905/9906 (Millennium) Models, F-3C for SHU 991x UC/12 (Integra) Models
st
1 Edition/Revision 1
30 seconds
Until Water Level Switch (f1) closes
Until water temperature reaches
º
150 F (65
60 seconds
SHU 9902/9905/9906 (Millennium) models
SHU 991x (Integra) models
SHU 992x (Integra) models
= Heater fault
= Water filling fault (over or under filling)
NTC (temperature sensor) fault – note circulation motor stops shortly after it started
=
during an NTC fault
¢ ¢ ¢ ¢
Clean
& F-3D for SHU 992x UC/12 (Integra) Models
TIME
º
C)
¢ ¢ ¢ ¢
¢ ¢ ¢ ¢
Regular
Power
Wash
Scrub
Plus
Page F-3B
NOTES
Input current < 1 A
Input current ~ 11 A and
dispenser actuator comes on
Press SCRUB WASH button.
Press REGULAR WASH button.
Press REGULAR WASH button.
º
F) and water won't stop
¢ ¢ ¢ ¢ ¢ ¢ ¢ ¢
Quick Rinse
Wash & Hold
Thursday, October 12, 2000