Question about Bosch SHU43C05 Stainless Steel Built-in Dishwasher
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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 **
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.
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...
...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.
**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.
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Posted on Nov 15, 2010
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.
Posted on Jun 29, 2015
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Posted on Jan 02, 2017
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Have you tried canceling the cycle? To cancel, turn the on/off switch to on, then press and hold for three seconds the two buttons labeled "Cancel Drain". Keep the door closed for the next minute so that the dishwasher can complete the cycle. During this time the pump will remove any water from the washer. Also you will notice that Bosch dishwashers always leave a little water in the system to keep the seals from drying out and going bad.
Hope this helps
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