Question about Bunn GR10 Coffee Maker

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My Bunn coffee maker boiles over the top vent

As soon as the water gets heated up (apprx. 5 min) It starts to boil out the top of the coffee maker where the vents are. If you turn the back tank off it stops. I have cleaned it, but it has not helped.

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  • 131 Answers

Try taking the top off the unit (3 screws) and remove the pour-in tray (1 bolt) and turn the thermostat down. Replace the tray - making sure you put the silicone washer in - put the lid on, and try it again. If this doesn't cure it, your thermostat is bad, and you need to replace the unit.

Posted on Feb 12, 2009

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Posted on Jan 02, 2017

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Month Old Bunn smells hot


Bunn machine smells hot
* Check for unusual sounds from brewer (other than sizzling from warmer plates). There should be a gradual boiling sound accompanied by some steaming at the top of brewer. This will turn off and ready light indicating the brewer is ready to brew.
* You may sometimes hear a slight boiling sound from time to time (about 15-30 mins apart). Notify your vendor as the warmer blanket may be out. (your brewer will still work but call them anyway.)
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