20 Most Recent Bunn CWTF15-TC Questions & Answers


If you have a hot water tap on the brewer, then most likely the thermal fuse is blown. You can get one from www.bunn.com. It's above and almost behind the tank, and most likely brown by now

Bunn CWTF15-TC | Answered on Oct 30, 2015


you'll have to recallibrate. use a 64 ounce measuring cup and follow the instructions on the inside of the front panel.

Bunn CWTF15-TC | Answered on Jan 15, 2015


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 CWTF15-TC | Answered on Jan 15, 2015


your thermal fuse has blown. it's in what is now brown tubing and is located in the top right rear of the machine. remove the top lid, remove the trough drain nut and trough to get to it. you can either bypass it with a jumper, or call (800) 352-BUNN (2866)

Bunn CWTF15-TC | Answered on Jan 15, 2015


use a measuring cup or bucket that goes up to 64 ounces in order to accurately callibrate. also, delime the sprayhead with a flathead screwdriver or paperclip first to ensure proper flow

Bunn CWTF15-TC | Answered on Jan 15, 2015


first delime the inlet drain and the sprayhead with vinegar or at least physically with a small flat head screwdriver. the inlet valve is in the top of the machine. next, recallibrate the brew flow. if you open the front panel, the instructions are on the inside of the plate

Bunn CWTF15-TC | Answered on Dec 06, 2014


inlet valve is stuck open. remove the front plate and locate the inlet valve in the front at the bottom. shut off the water supply and unplug the brewer. remove the nut and solenoid, and, using a crescent wrench, remove the valve shaft. take out the small metal plunger with the spring and stretch out the spring a bit. clean out any residue and put it all back together.

Bunn CWTF15-TC | Answered on Dec 06, 2014


yes there is clogged inside its either the hose or the keypad / connection of the control is corroded.

Bunn CWTF15-TC | Answered on Nov 27, 2014


There is a switch on the back of the unit that disables the heater. Make sure it is in the on position.

Bunn CWTF15-TC | Answered on Nov 27, 2014


To adjust the brew volume/batch size you will need to access the main circuit board behind the front panel. Isolate the machine before removing panels.

NOTE: Check that the brewer is connected to water supply, the tank is properly filled and a funnel and server or decanters are in place prior to setting or modifying batch sizes.
  1. Modifying batch sizes: To modify a batch volume, first check that the SET/LOCK switch is in the "SET" position on the circuit board. If the brewer has a batch selector switch, position it to the size to be changed. To increase a batch size: Press and hold the START or BREW switch until three clicks are heard. Release the switch (Failure to release the switch within 2 secs after the third click causes the volume setting to be aborted and previous volume setting will remain in memory) and press it again one or more times. Each time the switch is pressed, 2 secs are added to the brew time period. Allow the brew cycle to finish in order to verify that the desired volume has been achieved. To decrease a batch size: Press and release the START or BREW switch once for every 2 sec interval to be removed from the total brew time period; then immediately press and hold down the START or BREW switch until three clicks are heard. Release the switch. (Failure to release the switch within 2 secs after the third click causes the volume setting to be aborted and previous volume setting will remain in memory). Allow the brew cycle to finish in order to verify that the desired volume has been achieved.
  2. Setting batch sizes: To set a batch volume, first check that the SET/LOCK switch is in the "SET" position on the circuit board. Press and hold the START or BREW switch until three clicks are heard (this will take approx. 10 secs) and then release the switch. (Failure to release the switch within 2 secs after the third click causes the volume setting to be aborted and previous volume setting will remain in memory). View the level of the liquid being dispensed. When the desired level is reached, turn the ON/OFF switch to "OFF". The brewer remembers this volume and will continue to brew batches of this size until the volume setting procedure is repeated. Empty server(s), turn selector switch to positions that have yet to be set and repeat batch setting procedure until all batch sizes are set.
    NOTE: When brewing coffee, batch volumes will decrease due to absorption by the coffee grounds.
  3. Setting programming disable feature: If it becomes necessary to prevent anyone from changing brew times once
    programmed, you can set the SET/LOCK switch to the "LOCK" position. This will prevent any programming to be done.
    NOTE: If the clicks cannot be heard, lightly grip the incoming water line to feel when the valve cycles on and off.
24680777-5fyec3sitw1tjv0jktfwuexb-3-0.jpg

Bunn CWTF15-TC | Answered on Nov 25, 2014


The solenoid is leaking, replace and the problem will be gone.

Bunn CWTF15-TC | Answered on Nov 22, 2014


There are several reasons why it could overflow. Check to make sure you still have the spray head on the unit. If you do, the level might be set wrong. Reset the level and see if that corrects your problem.

Bunn CWTF15-TC | Answered on Jun 05, 2014


While holding down the switch you will hear the solenoid start and stop 3 times. You should have to hold down the switch for about 10 seconds to get the program started. Make sure the white lever on the board is not on the L.

Bunn CWTF15-TC | Answered on Sep 30, 2011


If pot used to fill all the way then check the filter if one is installed and the restrictor on the back of the tank, you can also run the deliming spring through the brew tube.
If the pot never filled all the way then remove the front panel and use the instructions to reprogram the brewer.

Bunn CWTF15-TC | Answered on Sep 25, 2010


Sounds like the solenoid or the liquid level control board is not working.

Bunn CWTF15-TC | Answered on Sep 23, 2010


It is best to wait for the machine to return to full temperature. It shouldn't be more than a minute or two after the last pot is done dripping. It will brew though and the water will be fairly hot for one more pot. Too many in succession will not brew well at all since the temp is and important factor in GOOD coffee.

Bunn CWTF15-TC | Answered on Sep 13, 2010

Not finding what you are looking for?
Bunn CWTF15-TC Logo

27 questions posted

Ask a Question

Usually answered in minutes!

Top Bunn Coffee Makers & Espresso Machines Experts

Kelley Hopper

Level 2 Expert

67 Answers

gbob59

Level 3 Expert

3063 Answers

Marvin
Marvin

Level 3 Expert

85239 Answers

Are you a Bunn Coffee Maker and Espresso Machine Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

View Most Popular

CWTF Bunn

  • CWTF Bunn

Most Popular Question

pot only filling half way

  • Coffee Makers & Espresso Machines
Loading...