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 Moderated by: RegUS_PatOff, Pegi Tell a friend about this page... all your other friends are doing it! Page:  First Page Previous Page  1  2   
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Bosch SMU 4000 dishwasher gets stuck in cycle  Rate Topic 
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 Posted: Tue Jun 30th, 2009 10:06 pm
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RegUS_PatOff
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It would be better to do some voltage tests when the Timer stops ..



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 Posted: Fri Jul 3rd, 2009 12:31 am
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FlatlandDan
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Another idea: I realized that the f4 thermostat (I found it via a diagram from repairclinic.com) isn't connected to anything. It has 2 prongs and a slot on one end, like it should go somewhere in particular.

The diagram from repaircenter.com shows the thermostat floating to the right of the dispenser unit, but it doesn't show where it goes. But it stands to reason that it wouldn't trip unless it's in close proximity to the heated water.

My question is where the heck does it go?

Attachment: Thermostat.jpg (Downloaded 18 times)

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 Posted: Fri Jul 3rd, 2009 01:08 am
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denrayr
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it goes here, that white dot is thermal conductive paste. If it is in place and doesnt trip, look for poor water circulation inside the dishwasher.

 

 

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 Posted: Fri Jul 3rd, 2009 01:38 am
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FlatlandDan
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Does the copper clip serve a purpose? And can I use electrical tape to keep it in place to test it? Or use a multimeter to check for resistance? If so, what should measurements be? Or is there a safe way to bypass this thermostat to test it?

UPDATE: I figured out where it went...would still like to know about testing. Thanks!


Last edited on Fri Jul 3rd, 2009 01:46 am by FlatlandDan

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 Posted: Fri Jul 3rd, 2009 01:47 am
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denrayr
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if i recall the clip slides in between the dispenser and the door to hold the thermostat firmly against the door. to test if its the thermostat you should verify the inner door gets as hot as the rating on the thermostat. if it gets that hot but doesnt trip then its a thermostat problem. if it doesnt get hot enough then you have a water heating/circulation problem.



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 Posted: Fri Jul 3rd, 2009 02:09 am
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FlatlandDan
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Are the thermostats directional? If I reverse the contacts, will it make a difference?

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 Posted: Fri Jul 3rd, 2009 03:16 am
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denrayr
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nope its like a switch, either open or closed.



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 Posted: Fri Jul 3rd, 2009 06:48 am
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FlatlandDan
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I put that thermostat back into place (still no glue, but bent it slightly to make good contact with the metal above the soap dispenser) and THE DISHWASHER WORKED. It went all the way through the cycle. Incredible.

So it looks like the thermostat, by coming loose or being dislodged from it's spot on the door caused the cycle sticking problem, just as if it had failed.

Hopefully this problem is solved.

Thank you!

Last edited on Fri Jul 3rd, 2009 06:48 am by FlatlandDan

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