Hello,
Welcome to FixYa.
Based on your description I'd say the issue actually is with the control...unfortunately. This is commonly associated with a heating fault as you suspected, hence the odor and poor cleaning on Bosch built dishwashers ( various models including Bosch, Thermador, Siemens, Gaggenau, and Neff ).
Since the issue is likely within the electronic timer/control, specifically the heater relay solder joint. ( a faulty flow switch, ntc or heater can also cause this, but not very probable ). These are the steps you'll need to follow to resolve it or at least investigate.
If you feel capable of checking this on your own, there`s a way to visually inspect the control yourself...it really isn't very complicated.
It will require you to remove the control from the unit and then remove the control from it`s plastic housing and look for a burnt solder contact on the printed circuit board.
The culprit will 99% of the times be one of the pins from the heater relay,
**Flip this over and inspect the solder joints, it will be obvious when you see it.**
This ones new, but it's where to look...
I have a Bosch dishwasher - 9119d99.jpg>
...hence the unit sit`s and takes longer & longer to finish because it can`t heat to advance or unless the 2 buttons for "cancel" are pressed...this can also manifest as a long cycle time as I mentioned and eventually display's "1" on units with a display and usually very poor cleaning, no heating ( don't be fooled by the homes inlet hot water temperature ) as a result.
You can also run the unit through a regular or econo cycle ...any cycle with the exception of rinse & hold, and with the door panel removed place an ammeter on the gray/black wire it should draw 11 amps during the wash cycle...after it fills and the flow switch indicates it has adequate water to engage the heater.
i.e. ( this may differ from your specific model, but thI have a Bosch dishwasher - f57273b.jpgs apply )
**My Opinion - if you or someone you know is proficient at soldering, a lot of times it can be remedied by simply repairing the solder...but it has to be done well...or it will not last. Bosch recommend`s replacing the control and I don`t pretend to speak on their behalf nor do I profess to know better. This is just my experience (it work`s) and my opinion (why buy new if one can repair ?)**
**Please disconnect the power or turn off the breaker before attempting any service to the dishwasher.**
If you do not feel comfortable attempting this service, call a local pro, preferably one familiar with Bosch/Thermador/Gaggenau/Siemens, to service your machine.
Thank`s for visiting "FixYa" for your repair inquiries. Please take a moment and rate this solution to it's helpfulness.
Good luck.
Regards,
Macmarkus :)
Hi Brian,
They do indeed have a heating element, just not like most north american style machines. Bosch has what they refer to as an "instantanious heating system" and it is well out of site unleas a complete tear-down was done...not necessary in this case I wouldn't think. I would certainly look into the solder joint possibility, however the running all night and just "humming" while displaying "0" and full of water sounds now like an obstructed pump/drain.
I'll post more info ( if you look behind the toe plate there should be tech sheet with a diagnostic you can perform...if not I'll walk you through it ) when I can but I'm presently on my iphone without access to my files. Good luck until then.
Regards,
Macmarkus :)
P.S.
I should have also asked ( so I will now ) if the unit will drain if you perform a "cancel" command ?
Regards,
Macmarkus :)
There is actually a Bosch recall on some of these boards. They told me my unit was not on the recall list, but when I sent them a picture of the burned spot on the board, Bosch sent a repair tech and replaced the board free of charge. Google "bosch dishwasher recalls"
The recall for the Bosch is well documented and if you check here on FixYa, and my profile particularily, the recall is mentioned when applicable to the model being mentioned. I have seen almost ALL models affected, though Bosch only issue recalls on a fraction of them for whatever reason. Gald you got looked after.
Regards,
Macmarkus :)
Bingo! Same problem with a newer model. Thank you for posting, saved me a truckload of money and may have saved my house from catching on fire.
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Make sure the disposal is not blocked with gunk.
Also your drain waste line under the sink.
The heater in the dishwasher may have failed causing extended was times.
Hi,
I
have an older dishwasher also and recently my wife also complained
about it not cleaning right... so me being the man I am tried in vain
to clean the things... Bought new spray arms online and installed
them in minutes...now the thing works like new... However I have also
found that if the heating element goes bad then that also can mess
things up bad... So I would buy new spray arms, and also check out
the heating element to make sure it is working... Here is a tip that
will help you with the online buying...
Dishwasher
Residue and Film on Dishes
Dishwasher
Spray
Arms not Spinning
How
to Buy Appliance
Parts Online
A
bad heating element causes many problems in
dishwashers...
Dishwasher Problems The Heating
Element not Working
Dishwasher
Maintenance
heatman101
Asker's Testimonial "explanation very clear. will give
it a go and see how simple it was. thanks Ronnie " -
ronnieshomes
2,471 views
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I don't think this dishwasher has a heating element. I'm pretty sure it heats the water as it goes through the pump. I checked the pump last night and it didn't have to have anything stuck around the impeller. I ran it last night and now it's full of water. The time left read 0 minutes but the diswasher was humming and still hadn't powered off. It ran all night. I've read about the control board wire needing re-soldered. I guess I will pull that apart next.
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