Question about Bosch SHU9915UC Dishwasher

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Shx43a09uc/46 will not heat water

Bosch shx43a09uc/46 will not heat water& runs over three hours before ending a normal cycle. The other three wash programs have the same problem. Where is the temp. control modual and the heater on this model?

Thanks, ****

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Found wire diagram next to left front leveling screw with instructions for checking out the no-heat problem. Solved by finding a overheated solder joint on the control printed circuit board which caused loss of signal from the control to the heater.
Use caution when removing the control from the door position as the plastic snap locks break quit easily.
Obviously this solder joint had developed enough heat to melt the solder and finally was destroyed by electrical arcing; if this is true and the excessive heat continues, resoldering may not be the final answer to the problem but may require a new circuit board design.
RAR

Posted on Oct 03, 2009

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6ya6ya
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Posted on Jan 02, 2017

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Dishwasher takes 3 hours to run through programme


3 hours isn't "extremely" long. If you run a normal cycle, it should run about 2-2:30 hours normally with the drying cycle. Now if it's over 3 hours, that would be a problem. Make sure that when you open the door that there is a lot of steam coming out, because that is the only thing that can extend the cycle is if the dishwasher isn't heating the water. Unfortunately this is a very common issue and it means that your control board inside the door has failed. There is a relay on the board that shorts out. This relay sends power to the heater, so when it fails the dishwasher doesn't wash well and it will run forever trying to heat the water which will never happen.

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How to run self test on bosche dishwasher


Here is an excerpt from "Bosch Dishwasher Troublesoooting".

Running a Test Cycle
Bosch dishwashers have a test cycle which can be run as a troubleshooting measure. The method to run this test cycle is similar across the Bosch dishwasher range so if your dishwasher features seems different from those described below then try experimenting, as the process is fairly straight forward and will be very similar. Bosch dishwasher model numbers are usually found around the top or lip of the door. One of the most common differences between dishwasher models is simply the names of the buttons. For example in the first example below, POWER SCRUB PLUS and REGULAR WASH may be called WASH and ECO depending on your dishwasher model and the country you are in. The other key difference is whether your dishwasher has a display panel (which can display error codes) or not (in which case a program light will illuminate to tell you the fault.
To run the test cycle hold down the POWER SCRUB PLUS and REGULAR WASH buttons. Whilst held down press the ON/OFF button. The lights above them should flash. Now you can check the status of each dishwasher program by pressing its button. Now you can run the full test cycle = Press the POWER SCRUB PLUS and REGULAR WASH buttons again. The dishwasher will start up and when the cycle has ended one, if you have no display panel on your dishwasher model the indicator lights will illuminate if a malfunction was detected as follows -
CLEAN - A temperature sensor fault. If this is the case then the test cycle will be very short as the dishwasher will terminate the test once it's been detected.
RINSE/DRY - A water sensor/filling fault. If this is the problem then the test cycle will not complete as the dishwasher cannot detect the right level of water, the dishwasher will just keep filling and draining again.
WASH - A heating fault. Check your heating element.
If you do have a display panel on your Bosch dishwasher then after the cycle is complete an error code will be shown if a fault has been detected. The error codes are as follows -
0 - No errors have been detected.
1 - A water sensor/filling fault.
2 - A heating fault.
4 - A water filling fault. This can also appear as F on the display during a normal cycle.
8 - A temperature sensor fault.
When troubleshooting your Bosch dishwasher, running the above test cycle is a good start in diagnosing the problem and should give you an idea of where the problem lies with your Bosch dishwasher and what fixes and repair are in order. Our general troubleshooting page will give you some ideas on other things to check on your dishwasher. Good luck!

Mar 29, 2013 | Bosch 24 in. SHU5305UC Built-in Dishwasher

1 Answer

The washing cycle runs for hours. It does not


I have a simular model SGU43 - that too goes for hours. There is a slight difference between the cycles in regards to water & electrical consumption...

Feb 25, 2010 | Bosch 24 in. SHU66C05 Stainless Steel...

1 Answer

I have a bosch dishwasher shu6805uc/u06 to long to wash.


Well not going into the dry cycle could be a timing issue or a EOC (control panel) issue and will need to be addressed. But most dishwashers these days have a active run time during normal cycle of 110 to 120 mins, and thats not including the heated dry feature. I would let the unit run and see if it will finish on its own, and if I say it pushes two and half hours then something is wrong. A tech would most likely have to look at it, also a power reset could help but thats like a 30% chance.

DrakeTech

Dec 30, 2009 | Bosch 24 in. SHU66C02 / SHU66C06 Built-in...

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I have a Bosch dishwasher Model number SHU4302UC. The dishwasher takes about four hours to wash dishes. During the rinse cyle it can be running for over an hour and I will open it to look in side and find...


possibilities are that of an inefficient heating element ie..scaled up if hard water area especially. whilst the cycle is being completed then the components are working... so other than the element check the drainage for blockages (slow draining adds time) & also water pressure as low pressure adds time to the filling..

Dec 21, 2009 | Bosch Dishwashers

1 Answer

Year old Bosch SHU33A0UC won't start. Lights on


Light's on mean you have power.

Initiate the self test program by doing the following -

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 150ºF) 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.

Let me know what you figure out. I can repair these boards most of the time.

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1 Answer

Bosch SHU 6800 Water hot at sink only luke warm at the washer


BAD CONTROL BOARD TO TEST TO SEE IF THIS IS THE ISSUE RUN TEST PROGRAM
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
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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,
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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 150ºF) 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

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3 Answers

Dishwahser rinse cycle running for hours


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