Bosch Dishwasher SGV43A03GB Water does not heat. Checked heating element and that is OK. What else could be wrong?

Douglas Henry

• 175 Answers
• Posted on Aug 16, 2007

SOURCE: bosch dishwasher

I'm probably sounding like a broken record, but id f its got buttons on the front and not a knob, its probably the control board. Unplug the unit or flip the breaker.Take off the outer door and the control panel by removing all those torx screws down each side, then pop that control board with all the wires out of the housing. once you have that in your hand, open the control assembly itself (should open like a book, into 2 halfs) once you spot the half without the buttons and lights, take that half out of the plastic housing and look on the back. If there is a burnt solder joint there (it will be obvious if it is) you will need to have that joint repaired, or get a new control board..bout $150 if memory serves. that joint that burns powers the heater, so its likely thats your problem. It can also cause some other isuuse as well, such as the time display freaking out (if you have one) Good Luck!

SOURCE: My DX302 dishwasher wont heat the water, the

The heater relay n/c leg had melted the solder off the board, I re soldered the leg laying it on a bit thicker. cheap fix.

SOURCE: Whirlpool dishwasher heating element overheating

Same thing just happened to my yesterday on my Kenmore. Expert help needed.

SOURCE: I have a Zanussi ZSF 6160 dishwasher which is not

measure the heating element resistance it should be around 25 ohm.
otherwise it is the problem.

You can replace the relay, sometimes it stop working with no external damage signs

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.




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 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.


**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 :)

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