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Bunn coffee maker trips the breaker

Recently our Bunn coffee maker suddenly started tripping the breaker as the water heats up. It will power on and the water will start to heat and then about 60 secs. into it the breaker will trip. Could this be due to the limit thermostat or the solenoid? Thanks

Posted by ChiefDan on

  • 1 more comment 
  • Myrnabahamas Dec 16, 2007

    Ours does that, too. We thought it might have been the breaker, but when we moved it to another curcuit it still tripped the breaker. The coffe maker is only 1 year old and I didn't think it would die this soon!

  • hsbsms Jun 28, 2008

    I have commercial ST-15 Bunn and it trips the GFI after about 30 seconds.

    Any recomendations?

  • Anonymous Oct 11, 2008

    Same thing happened to us.  It was about a year old. tried multiple outlets, popped them all.   Had to buy another...



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Gord Thurston

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  • 131 Answers

It is possible that you have a short in your limit thermostat, but most likely this is caused by small holes in your main heating element. these units start to split length ways down the element, causing a short to ground through the water. These elements are readily available at your local Bunn repair shop.

Posted on Feb 13, 2009


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Number one make sure you have nothing else added recently on that circuit, where you have had your machine plugged in. If something was added on that circuit, something that is always running like a fridge, that could be overloading the circuit, sense coffee machines use a huge amount of power at start up. If your sure nothing of that sort has changed then next is:

Number two, make sure you have cleaned the machine, you know descaling and making sure there is no restrictions. If this is good, then next is:

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What i have done is located the manual on your machine, that besides gives you a lot of information, it also gives you trouble shooting tips and schematics of the parts and wiring diagram for you machine. Here is the link to copy and paste in your browser to download the manual.

Please if this helped you, rate my free solution and a pleasant testimony would be nice to help me and others on my efforts of helping you. Thanks So Much, Mike from Fixya.

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