20 Most Recent
Questions & Answers
Bunn coffee brewer brews too slow?
lime builds up on the metal surfaces where the hot water cools down or evaporates, such as the sprayhead, the waterline to the sprayhead, the reservoir inlet, or the insides of the tank. the sprayhead and reservoir inlet buildup will restrict flow and extend brew time and may even not brew through all of the grounds. to fix:
1. remove the top of the brewer. the reservoir is right on top and the drain looks like a nut with a hole in it. lime will plug this up. using a deliming spring or even a philipshead screwdriver, push through and twist to get rid of the lime.
2. unscrew and remove the sprayhead and bore the lime out of the holes with a small flathead screwdriver or a paperclip.
3. if necessary, unscrew the reservoir drain nut, place it and the sprayhead in a cup of straight vinegar. for more stubborn lime, use CLR, but wash and rinse thoroughly.
4. if you have a deliming spring, push it through the outlet waterline to the sprayhead all the way past the 2 elbows and pull in and out, removing any lime buildup.
5. rinse parts, reassemble the reservoir, and brew a little without the sprayhead first to get rid of any loose lime. then put sprayhead on and run a test brew. if it brews short or too much, see tip for recallibrating
Bunn coffee maker heating element wont turn off
thermal fuse is blown. it is located in the top, right rear of the machine in what is now browned tubing. you can either bypass the fuse with a jumper, or get a new part through bunn (800) 352-BUNN (2866)
Bunn F15 not brewing
Might be a bad solenoid. Check voltage going through the fill solenoid. If voltage is there at around 110, check if water is filling the fill pan. If no water is filling and you have the correct voltage. its a bad solenoid.
Just installed a Bunn cwtf15-3
Remove the front panel and make sure the pressure stat is turned up to max and back it up 1/4 way. If you have done that already then remove the top and check the thermostat and the inline fuse.
Our Bunn CW series three burner is over filling.
needs service tech to adjust.
(Do it yourselfers can adjust the black knob down from 2.5 to about 2 mins. Digital timers have instructions in back of the front panel. CAUTION!! There is high voltage present. Pull out the plug! Safer to just have it serviced.)
Have a Bunn CWTF, when the switch is pushed and water begins to flow thru the basket, there is a small amount of water that begins to puddle on top of the left tank (right does it also, but less).
Leaking from top of tank; Call for service as this is an electrical hazard.
*** the following is for information only. ***
* Replace any worn gaskets and silicone tubes.
* There may be cracks in the metal pipes. Hard to see, but there, if you remove the lime deposits.
* check the top tray nut if the gasket to the tank is missing. It's about an 1-1/4" round washer with about a 3/4" hole. Usually made of white silicone rubber. It seals the fill tray to the tank. Leaks often.
* Bunn equipment can last quite a few years (decades?) but the gaskets do get hard and the tank needs to be water tight to work properly. Since this is already an old brewer and you've saved money rebuilding it. Suggest going further by replacing all gaskets. Yes they do need to be snug with no cracks.
How to descale Bunn CW15-APS coffee maker
delime the sprayhead and reservoir drain (in the top) with a deliming spring or a screwdriver. to delime the tank, put a half gallon of vinegar in the top and catch the hot water as it comes out of the sprayhead. leave it sit for about 20 minutes and brew at least 8 times (w/o coffee) or until you can no longer taste vinegar
Bunn water level
What about Bunn water level? Too high? Too low? Not filling? Leaking?
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