20 Most Recent Bunn CWTF 15-TS Coffee Maker Questions & Answers

The water tube is the tray filler (for brewing). This is the output from the water fill valve which is usually set at a timed interval just enough to fill the tray with water to make a desired brew. There are other units that will automatically sense the proper water amount and fill as needed.
* All of these are on demand systems and should not be filling excess water when not in use. Call your vendor for service.
* Excess water is usually caused by a leaking water fill valve which will need to be replaced. Tip: click the brew switch on and turn off the brewer to stop. Do this several times. You should hear a 'click' then a whine as water fills the brewing tray. Place an empty pot or metal decanter to catch the hot water from empty funnel (no coffee needed) The brew will be higher and will overfill the decanter so keep an eye on it and dump water as needed. What you are doing is possibly dislodging a bit of sand that may have got stuck in the valve thus causing a small leak. Snapping the valve several times may clear it. If not then call for service.
* Some time the timer can get scrambled as the newer units are all digital and get out of calibration or blown out. Especially after a blackout or Electrical storm. Call your vendor for service.
* Auto level probes can get dirty and will need service to clean as it's usually located inside the machine and tank.. Call a tech to be safe.
* Sometimes constant running of Hot water is a sign of a bad heater and/or thermostat. Thermostat may be shorted and boil all water off. Heater could have ruptured and short to ground which boils off water. Both cases will cause the brewer to boil vigorously (Gallop!) then run completely dry. Over heat and trip out breakers and or thermal fuses. Hopefully it shuts down before catching fire. (There are safe guards in place as Bunn equipment are well designed.)
* Finally: Leaks in any form, especially from the body of the brewer will cause an electrical hazard. Call your vendor for service and replacement.
Aloha! ukeboy57

Bunn CWTF 15-TS... | Answered on Jan 18, 2018

see deliming tip for bunn cwtf

Bunn CWTF 15-TS... | Answered on Jan 28, 2015

The amount of powder required depends upon how strong or weak you like your coffee. I would suggest you start with around two thirds of a basket for a full brew and see how you find the flavour. Adjust the amount of powder used according to your taste. More powder = stronger coffee.
I can supply a manual if you need it but it doesnt specify an amount of powder to use.

Bunn CWTF 15-TS... | Answered on Nov 01, 2013

If its a new brewer out of the box, first thing I would do is check the mechanical switch in the back if one is installed on your model. Then I would remove the front panel and check the thermostatto make sure it is set to maximum then back 1/4 of a turn.

Bunn CWTF 15-TS... | Answered on Jun 28, 2011

There is multiple reasons for this. I could be that the thermostat is bad and kicking off prematurely or not letting enough power through. Also the heater and tank could be corroded or "limed" up. I would start by unpluggin the machine and allowing it to cool. Take the top or panel behind the container off then check if the thermostat, which will have a black knob on it, and make sure it is turned all the way to the right. While you have the top off you can pull the thermostat out of the tank, it will have a rubber grommet and a metal line coming out. Make sure it is not limed up if it is you can use a scouring pad or sand paper to clean it. Hope this helps

Bunn CWTF 15-TS... | Answered on Feb 10, 2011

Adjust the thermostat, located behind the front panel, there will be a knob, turn all the way on then back about 1/4 turn.

Bunn CWTF 15-TS... | Answered on Dec 07, 2009

The solenoid needs to be replaced.

Bunn CWTF 15-TS... | Answered on Nov 05, 2009

Have you tried resetting the brew volume(make sure board is not set to lock).
The only other thing I can think of is replacing the timer board, because its not telling the solenoid to stop brewing.

Bunn CWTF 15-TS... | Answered on Apr 28, 2009

If this problem started after moving the machine, pull the machine out a little & look behind it for a kink in the tubing coming to the brewer. These brewers time the water coming through them, so if a kink is restricting the water flow, running the same amount of time equals much less coffee in the airpot.

Bunn CWTF 15-TS... | Answered on Apr 26, 2009

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.
Aloha, ukeboy57

Bunn CWTF Coffee... | Answered on Jan 20, 2018

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 CWTF Coffee... | Answered on Jan 28, 2015

What about Bunn water level? Too high? Too low? Not filling? Leaking?

Bunn CWTF Coffee... | Answered on Nov 25, 2014

Most likely cause is that the seal between the water reservoir and the tank is leaking. Not uncommon. If you can find a replacement seal go for it, otherwise the old one can be made serviceable by coating both sides with a thin bead or layer of clear silicone. Allow to cure for 24 hours before powering the coffee maker back up.

Bunn CWTF Coffee... | Answered on Nov 23, 2014

If its been changed to 220V plugging it into 120V won't damage anything, it just won't work. Replace the plug with a 120V plug end and plug it in. If it works its120 if it doesn't, its either a 220V setup, or you have a blown fuse in the unit/power supply or some other defect.

Bunn CWTF Coffee... | Answered on Nov 05, 2014

the plunger for ur solenoid valve assembly might be stuck in open position ... ur click sound maybe came from ur funnel lock during brewing. water shots from the fill or oveflow cup due to contoniuos supply of water , try to close ur main water and c if water will also cease

Bunn CWTF Coffee... | Answered on Oct 02, 2014

google item and error code, if no owners manual try:

Bunn Coffee... | Answered on Aug 20, 2020

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