Bosch Dishwasher Diagnostic Procedures; dishwasher repair

by Samurai Appliance Repair Man on October 12, 2005

in Dishwasher Repair

And now, a special treat for you Bosch dishwasher owners out there…

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:

WASH = Heater fault

RINSE/DRY = Water filling fault (over or under filling)

CLEAN = NTC (temperature sensor) fault ? note circulation motor stops shortly after it started during an NTC fault

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 (f1) 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 (e5) has failed (opened), water won’t heat (to 150?F) and water won?t stop circulating. If NTC probe (f2/f4) 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 4322 & 4326 MODELS

To start test program, press and hold both REGULAR WASH and RINSE & HOLD program buttons, then turn unit on by pressing ON/OFF button. Initially, control module version # will be displayed (e.g./ ?20? = version 0 without jumper). When wash 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 check Cycle Countdown display, Refill Rinse Agent light and REGULAR WASH light, press REGULAR WASH button (press Delay Start button to test Cycle Countdown display alone). Cycle Countdown display will show “88″ when REGULAR WASH button is pressed and “8h” when Delay Start button is pressed.

To start testing, press both the REGULAR WASH and RINSE & HOLD buttons a second time. When testing has ended, Cycle Countdown display will show a fault using codes below. If more than one fault occurs, code numbers will be added together, (e.g./ ?6? = faults 2 + 4).

0 = No faults detected 2 = Heating fault 8 = NTC (temperature sensor) fault

1 = Aqua Sensor (“Sensotronic”) fault 4 = Filling fault F = Filling fault (display occurs during wash, not test)

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 (f1) has failed (opened), display will show fault code “4″ and unit will continually fill and drain where testing won’t be completed. If flow switch (e5) has failed (opened), display will show “0″, water won’t heat (to 150?F) and water won?t stop circulating. If NTC probe (f2/f4) has failed (opened), display will show fault code “8″ immediately and testing will end shortly after water has started circulating.

SHU 53 MODELS

To start test program, press and hold both SCRUB WASH and DELICATE/ECONO program buttons, then turn unit on by pressing ON/OFF button. Initially, control module version # will be displayed (e.g./ ?21? = version 1 with jumper). When wash 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 check Cycle Countdown display, Refill Rinse Agent light and REGULAR WASH light, press REGULAR WASH button (press Delay Start button to test Cycle Countdown display alone). Cycle Countdown display will show “88″ when REGULAR WASH button is pressed and “8h” when Delay Start button is pressed.

To start testing, press both the SCRUB WASH and DELICATE/ECONO buttons a second time. When testing has ended, Cycle Countdown display will show a fault using codes below. If more than one fault occurs, code numbers will be added together, (e.g./ ?6? = faults 2 + 4).

0 = No faults detected 2 = Heating fault 8 = NTC (temperature sensor) fault

1 = Aqua Sensor (“Sensotronic”) fault 4 = Filling fault F = Filling fault (display occurs during wash, not test)

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 (f1) has failed (opened), display will show fault code “4″ and unit will continually fill and drain where testing won’t be completed. If flow switch (e5) has failed (opened), display will show “0″, water won’t heat (to 150?F) and water won?t stop circulating. If NTC probe (f2/f4) has failed (opened), display will show fault code “8″ immediately and testing will end shortly after water has started circulating.

SHI/U 68– MODELS

To start test program, press and hold both SCRUB WASH and DELICATE/ECONO program buttons, then turn unit on by pressing ON/OFF button. Initially, control module version # will be displayed (e.g./ ?20? = version 0 without jumper). When wash 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 check Cycle Countdown display, Refill Rinse Agent light and REGULAR WASH light, press REGULAR WASH button (press Delay Start button to test Cycle Countdown display alone). Cycle Countdown display will show “88″ when REGULAR WASH button is pressed and “8h” when Delay Start button is pressed.

To start testing, press both SCRUB WASH and DELICATE/ECONO buttons a second time. When testing has ended, Cycle Countdown display will show a fault using codes below. If more than one fault occurs, code numbers will be added together, (e.g./ ?6? = faults 2 + 4).

0 = No faults detected 2 = Heating fault 8 = NTC (temperature sensor) fault

1 = Aqua Sensor (“Sensotronic”) fault 4 = Filling fault F = Filling fault (display occurs during wash, not test)

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 (f1) has failed (opened), display will show fault code “4″ and unit will continually fill and drain where testing won’t be completed. If flow switch (e5) has failed (opened), display will show “0″, water won’t heat (to 150?F) and water won?t stop circulating. If NTC probe (f2/f4) has failed (opened), display will show fault code “8″ immediately and testing will end shortly after water has started circulating.

SHV 43/48 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. NOTE: TO ENABLE LIGHTS TO COME ON, DOOR MUST BE OPENED.

To check program indicator lights (POWER SCRUB PLUS, SCRUB WASH, REGULAR WASH and RINSE & HOLD), press and hold each program button. When SCRUB WASH program button is pressed, CLEAN and REFILL RINSE AGENT lights also come on (for SHV 4803 models) or CLEAN light also comes on (for SHV 4303 models). NOTE: TO ENABLE LIGHTS TO COME ON, DOOR MUST BE OPENED.

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:

POWER SCRUB PLUS = Heater fault

SCRUB WASH = Water filling fault (over or under filling)

REGULAR WASH = NTC (temperature sensor) fault ? note circulation motor stops shortly after it started during an NTC fault

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 (f1) has failed (opened), SCRUB WASH light will come on and unit will continually fill and drain where testing won’t be completed. If flow switch (e5) has failed (opened), water won’t heat (to 150?F) and water won?t stop circulating. If NTC probe (f2/f4) has failed (opened), REGULAR WASH light will come on immediately and testing will end shortly after water has started circulating. NOTE: TO ENABLE LIGHTS TO COME ON, DOOR MUST BE OPENED.

If more than one fault occurs, more than one light will be lit.

SHU 9902/9905/9906 (Millennium) 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 program indicator lights (POWER SCRUB PLUS, SCRUB WASH, REGULAR WASH and RINSE & HOLD), press and hold each program button. When SCRUB WASH program button is pressed, CLEAN light also comes on.

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:

POWER SCRUB PLUS = Heater fault

SCRUB WASH = Water filling fault (over or under filling)

REGULAR WASH = NTC (temperature sensor) fault ? note circulation motor stops shortly after it started during an NTC fault

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 (f1) has failed (opened), SCRUB WASH light will come on and unit will continually fill and drain where testing won’t be completed. If flow switch (e5) has failed (opened), water won’t heat (to 150?F) and water won?t stop circulating. If NTC probe (f2/f4) has failed (opened), REGULAR 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/992x (Integra) 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 program indicator lights (POWER SCRUB PLUS, SCRUB WASH, REGULAR WASH and RINSE & HOLD), press and hold each program button. When SCRUB WASH program button is pressed, CLEAN light also comes on andan audible tone (?beep?) also occurs.

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:

POWER SCRUB PLUS = Heater fault

SCRUB WASH = Water filling fault (over or under filling)

REGULAR WASH = NTC (temperature sensor) fault ? note circulation motor stops shortly after it started during an NTC fault

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 (f1) has failed (opened), SCRUB WASH light will come on and unit will continually fill and drain where testing won’t be completed. If flow switch (e5) has failed (opened), water won’t heat (to 150?F) and water won?t stop circulating. If NTC probe (f2/f4) has failed (opened), REGULAR 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 33 MODELS

To start test program, press and hold both POWER SCRUB PLUS and RINSE & HOLD 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 and RINSE & HOLD), press and hold each program button. When REGULAR WASH program button is pressed, CLEAN light also comes on.

To start testing, press both POWER SCRUB PLUS and RINSE & HOLD buttons a second time. When testing has ended and a fault was detected, the following indicator lights will be lit:

POWER SCRUB PLUS = Heater fault

REGULAR WASH = Water filling fault (over or under filling)

RINSE & HOLD = NTC (temperature sensor) fault ? note circulation motor stops shortly after it started during an NTC fault

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 (f1) 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 (e5) has failed (opened), water won’t heat (to 150?F) and water won?t stop circulating. If NTC probe (f2/f4) has failed (opened), RINSE & HOLD 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.

To learn more about your dishwasher, or to order parts, click here.


Find Appliance Parts & Diagrams Here
Enter a model number, part number, type of appliance, brand, or even a part description.
 

365-day return policy on all parts ordered through this site!

{ 9 comments… read them below or add one }

Surge March 3, 2010 at 12:54 am

Thank you for this post, but please help. I ran the test cycle, and at the end, the Regular Wash light was flashing (about 1x per second). What does this mean?

I have the SHX43P15UC model. It’s brand new and seems to be the current “entry level” model without a display.

Thank you

Samurai Appliance Repair Man March 3, 2010 at 1:14 am

That indicates a fault with the NTC temperature sensor. We can get into details of what this means, how to test it, and how to fix it in the repair forum– start a new topic in the Kitchen Forum.

Masque May 27, 2010 at 1:00 am

I ran the test but my fault code is not listed here 9.9. What does this mean?

finiteresource November 26, 2010 at 3:33 am

If you have a Hotpoint DWF 31 or simiar, see the PDF below, as it appears to be the same controller & procedure, but the buttons have different names – you can work it out from the diagrams in the PDF.

http://fixitnow.com/wp/2010/09/01/bosch-dishwasher-test-programs-diagnostic-mode-and-error-codes/

mkopser May 24, 2011 at 11:17 pm

I have a Bosch SHU 53 model dishwasher. I cannot begin a test sequence — no matter what control buttons I press, when press the power button, the same lights/indications are always displayed:

’0′ time left on the cycle
‘Power Scrub Plus’ cycle selected (light on)
‘Sanitized’ indicated (light on)
‘Refill Rinse Agent’ light dimly lit

So it ‘appears’ that the dishwasher is at the end of a ‘Power Scrub Plus’ cycle. But no event will change the status (power on or off ,door latched/unlatched, other cycle buttons pressed.)

Is there any way to ‘reset’ the control panel? (I tried unplugging the unit for several minutes and plugging it back in — same lights remain on.)

jpvrla October 3, 2012 at 12:57 pm

I own a SHE4AM16UC which jumps from ACTIVE to CLEAN prematurely.
By accident I discovered the following work around which just requires a good ear.

Power off dishwasher for a few seconds.
Push ON then START and listen for what sounds like water being pumped out.
When this pumping sound ends immediately open the door and hit OFF.
Close the door, push ON again, listen for a few clicks, then push START right away.
You should then hear:
the sound of water filling (about 8-10 secs)
silent pause of about (8-10) seconds
sloshing sound indicating success
You may have to try it a couple of times to get it right but be patient.
I tried a conventional start a few times but I always have to go back to this work-around.

mollusk January 17, 2013 at 5:51 pm

I have a Bosch SHE6AF02UC/05 dishwasher and by trial and error have found the key to running the test program. Push both the “” buttons and then the “On/Off”. To run the program then push the “<" button.

Unfortunately my machine is throwing e24 errors early in each cycle, but the test program ran and showed no errors. The drain lines are clear, the filters have been thoroughly cleaned, I installed a new drain pump, and I even installed a new reverse flow valve just in case the old one was leaking. Yes, I do have a proper high loop in the drain line. Still no joy. I can sometimes get it to run a full wash cycle if I totally drain the system first, but that is no way to do dishes every day.

mollusk January 17, 2013 at 5:53 pm

No edit feature?

For some reason “” was contracted to “” in my post. WTF?

mollusk January 17, 2013 at 5:54 pm

This is very weird. I am trying to type in (in effect) the “less than” button and the “greater than” button and it gets shrunk. ?????

Previous post:

Next post:

Real Time Web Analytics