Bunn -O-Matic Corp. 2 Warmer Auto Brewer Black Logo
Posted on Oct 02, 2008
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Bunn omatic model F20 doesn't stop dripping

We have a bunn omatic Model F20. It consistantly leaks by after the brewing is done, or the coffee maker is shut off. Its like a check valve is stuck slightly open, constantly dripping into the coffee pot. What can I do beside shut the water line off into the maker? We have it here at the firestation and we need our coffee. Thanks Mark

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Steve

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  • Master 3,290 Answers
  • Posted on Dec 02, 2008
Steve
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Joined: Dec 02, 2008
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Check out:

http://whles.com/General%20Mtx%20Knowledge%20%20Tony%20Roach/BunnOMatic%20F35%20F20%20F15%20x.pdf

This is the free full service manual F15, F20 & F35 complete with troubleshooting section at the rear. This section has easy, plain english steps to follow to solve this very problem (others, too).

Good luck!

  • Steve Dec 02, 2008

    BTW - I just repaired our F-20 due to overflowing decanter. It turned out to be a deposit that was lodged in the solenoid valve. After running a continuity check (about 180 ohms) and determining there was 120 volts present out of the timer (with the lower warmer switch on and the brew start switch actuated) I shut off the water supply & removed the solenoid valve assembly. I was able to blow air thru the solenoid, so I knew it was the problem. I attached a 120 plug to the solenoid coil and used compressed air to blow air in the opposite direction that the water normally flows thru it. Yours *may* be a similar problem. Follow the troubleshooting guide in the back of the manual.

  • dpaul272 Jan 16, 2011

    sounds like the water valve is bad you can get them on ebay

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