Question about Bunn -O-Matic Corp. 2 Warmer Auto Brewer Black

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Coffee Brewer comes out warm not hot

I have a older Bunn Commerical Coffee brewer with one burner on top and the other where the brewing unit is. When I make the coffee it comes out warm and not hot. Is there something I can replace in this unit or is there a temp regularator.

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Re: Coffee Brewer comes out warm not hot

I have the same problem. After checking the thermostats, as described in the service manual, the only other problem I can think of is that the capillary bulb is too close to the heater element. I adjusted it so that it is hopefully hanging straight down as prescribed.

Posted on Sep 25, 2008

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Re: Coffee Brewer comes out warm not hot

Look at the top of the coffee maker you'll see two screws and the warmer tray and the cover for adding water. remove the two screws and lift the top off. the warmer has two push on spade terminals. pull the wires off them. below is a tray where the water goes and you'll see a brass bushing. this is screwed into a fitting on the water tank. use a piece of steel as a spanner and unscrew this fitting. don't lose the gasket that's under it. the main wires for the burner element and thermostat are also under this tray. look at the top. there's nine screws that hold the top on the water tank. two white wires go to the tank warmer and two wires go to the tank heater inside. you can try turning up the thermostat setting to a higher range and see what happens. there's a copper pipe that comes from the tank to the sprayhead the tank holds approx three urn fulls of water. if you have an analog meter you can check the element for continuity on the RX1 range. Do the same with the tank warmer element. Bunn-o-matic has a web site you can buy replacement parts or nelson appliance can get you parts too.

Posted on Nov 19, 2007

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Bummer Bun

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The limit thermostat isn't the same as the thermostat. It is a ceramic and metal item that senses if the tank gets too hot from having the unit plugged in without any or enough water in it. It is inexpensive and relatively simple to change.

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