Question about Bosch SHU43C05 Stainless Steel Built-in Dishwasher

2 Answers

Bosh dishwasher SHU43C05UC won't finish the cycle. won't drain and keeps running for ever when gets to 1 min left.Hoses checked and not clogged. I was able to drain the water by doing the test run and punching the rinse and hold button .what is the problem?

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  • pascalevann Nov 15, 2010

    The cycle goes to the last minute and goes back to 40 min .never stops. is it the same problem . the one didn't display when I tested .

  • pascalevann Nov 15, 2010

    Could you please send me a PDF copy of the Bosch service manual?
    pascalevann@msn.com
    Thanks

  • SANDI FOSTER Aug 25, 2013

    Having the same problem and would also like to know where to get a copy of the Bosch service/repair manual? Please contact me at 1slfoster@gmail.com Thanks

  • SANDI FOSTER Aug 25, 2013

    By the way, mine is not under a recall as stated below as my machines Serial # is FD8612 00039

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  • Bosch Master
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Hello,

Welcome to FixYa.

Based on your description " won\'t finish the cycle. won\'t drain and keeps running for ever when gets to 1 min left.Hoses checked and not clogged. I was able to drain the water by doing the test run and punching the rinse and hold button"
I'd say the issue is most likely with the control...unfortunately. The "1" being displayed is actually an error code associated with a heating fault.

Bosch has had a history of this exact problem I'm about to lay out for you and this is the first thing I'd be looking for if called out to service the unit with the symptoms you've described.
**B/S/H/ also issued a recall on certain models between 1999 - 2006 depending on the model & serial number, and it does apply to yours....based on just the model number, but check the serial number. It applies to serial numbers betweenFD7905 - FD8505 The issue was directly related to the heating circuit (specifically the heat relay on the control) Here`s the link if you want to see for yourself **

http://microsites.boschappliances.com/safetyrecall/dishwasher/


As I've alluded to 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 ).

My first suggestion would be contacting Bosch re: the recall or calling in an authorized bosch service tech. if that is an option for you and your budget however, If you feel capable of checking this on your own, there`s a way to visually inspect the control yourself.

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.


Bosh dishwasher SHU43C05UC  won't - dabfa62.jpg


The culprit will 99% of the times be one of the pins from the heater relay,

9f1823d.jpg

**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...



...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...or takes a long time as I mentioned and eventually display's "1" on units with a display.

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 Bosh dishwasher SHU43C05UC won't - f57273b.jpgheater.

i.e.

f57273b.jpg
**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, although Bosch recommend`s replacing the control and I don`t pretend to speak on there 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.

Hope this answer`s your question, let me know if I can assist you further. I would recommend you contact Bosch regarding this recall, perhaps the repair will be free...but I don't speak for them.

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 :)

Posted on Nov 15, 2010

  • Mark MacDonald
    Mark MacDonald Nov 15, 2010

    Hi,



    The error code will only be displayed in the wash cycle, whereas in the diagnostic cycle ( provided it is done correctly ) will display the number "2" for a heating fault.



    I would still inquire regarding your machine being part of the "recall" as it is possible this problem could manifest in the manner you've described, yes. The machine is simply continuing to attempt a heating cycle.



    You could still remove the control and visually inspect it or perform the test program again place the ammeter as described in my initial post, this will confirm or dismiss a heater circuit fault.



    Let me know how you make out or if indeed you need further assistance. If you'd like to post your email address I can send you a "pdf" copy of the Bosch service manual.



    Good luck.



    Regards,



    Macmarkus :)


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I have a SHU66C05UC which decided to run for 4 hours before I noticed there was shut off problem. I tried Mark McDonald's fix. It worked like a charm and my wife thinks I'm a genius. It took awhile to figure out how to get the board out. The dishwasher apparently is too old for Bosch to have a repair video about this model so I had to use some brain power to get the board out. Basically you have to take the whole front control panel completey out. The newer versions of the control board assembly just pop out from the back of the control panel after you remove the screws holding the front and back of the door together. I quickly found the burned up solder joint on the board and soldered the connection again. Anyway the job took about an an hour and a half. If you know how to solder electronics, this is an easy fix compared to a $325.00 replacement board from Bosch plus labor. Hint: Take a photo of the wire connections. It stops the "Did I do this right?" voice in your head.

TAP

Posted on Jun 29, 2015

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