Question about Bosch SMS63E Dishwasher

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Bosch Dishwasher SMS4602eu is not heating up. I have tested the heating element for continuity and this seems to be fine. Any other suggestions would be greatly appreciated?

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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  • 213 Answers

SOURCE: test bosch heating element

remove the kick plate at bottom of dishwasher, at the left leg there will be a wiring diagram. remove console and test element from there. diagram will show which wires to test

Posted on Nov 20, 2007

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  • 49 Answers

SOURCE: Fills with water, sounds like it starts to pump water then stops, then start again

you have a wash pump problem. can be 1 of 3 things. most likely something is caught in the pump impelor if not the wash pump motor may be faulty or ceized or it could be the capacitor for the wash pump motor is faulty. you can try removing the wash pump yourself and check the impelor if it spins freely then you will have a motor problem.
hope this helped

Posted on Feb 19, 2008

  • 1462 Answers

SOURCE: Whirlpool Dishwasher ADG7540/1

an ntc is very reliable. have you checked continuity thro the heater? other common fault is a dry joint devoloped on the control card - take it out and check for dry joints

Posted on Oct 03, 2008

Macmarkus
  • 2605 Answers

SOURCE: Bosch dishwasher SHU3032UC/U12: Gets

Hello,

Welcome to FixYa.

Based on you description of the timer not advancing you`re on the right track when you said "Thought it might be the timer (control unit), but now am wondering if it could be the heating element or thermostat"


I suspect the thermostat isn't satisfied when heating the water, hence it get`s hung up trying to heat in the part`s of the cycle it`s called for.

It very well could be caused by a faulty flow switch, NTC or heater as well but not very likely.

The SHU 30** series Bosch dishwashers with a rotary dial timer have very few if any, issues with the actual timer or element but they do with the thermostat within the door panel.

If it ( the thermostat ) is not satisfied the water may heat but not be indicated via the thermostat, hence timer will not advance.

Here`s what you can try. If you have any hesitation or reluctance to service this yourself please call in an authorized B/S/H/ appliance technician.

**Turn off the breaker at the service panel before attempting any service suggested **

  1. You will require a #20 torx screwdriver to remove the door panel by taking out the screws around the panel, except the ones along the top ( watch the edges they are very sharp )

  2. Once the panel is removed you should see the thermostat over by the detergent dispenser clipped to the inner door, remove it and test it. You`ll need a ohm meter/multi-meter plus a lighter or match to heat it up to see if it open`s & closes.
Example...

5e74230.jpg
**NOTE** it can occur the thermostat can become loose and detach from the bracket which holds it in place, this too can manifest in the sysmptom of the timer not advancing.


Let me know how you make out and what you find.

Thank you for choosing FixYa and Good luck.

Regards,

Macmarkus :)

Posted on Sep 10, 2010

Testimonial: "Wow, loads of good inf to try to fix my dishwasher! I appreciate the very detailed answer to my question."

Macmarkus
  • 2605 Answers

SOURCE: Bosch dishwasher shx46b02uc has stopped

Hello,

Welcome to FixYa.

Based on your description
I'd say the issue actually with the control...unfortunately.
Bosch has had a history of this exact problem I'm about to lay out for you and it is rarely the element...maybe 1%. 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, you can check with yours but you'll need the serial number too. 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 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.


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...

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

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.
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 26, 2010

Testimonial: "I appreciate the fast response. Makes a lot of sense and will start exploring next steps. Nice work."

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Hi there,

Unfortunately, it seems that the heating element has failed. The dishwasher uses steam to heat the tub to dry the dishes. I suspect your dishes are also being washed in cold water.

To check this, please run a regular full wash cycle. Allow the washer to fill with water and run for about 10 minutes, then open the door and feel the water temperature in the bottom of the washer. If the water is cold, it's more than likely the heating element has failed.

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That could either be a problem with the control module or the heating element...my first guess would be the heating element... as it is looking to sense it working and does not...

A bad heating element causes many problems in dishwashers…

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