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I have a cwtf15 that will brew the first pot perfect, but on every brew after that the water comes out lukewarm. What goes?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 5 Answers

SOURCE: does not brew a full pot of coffee

I had the same issue, poured in 8 and out came 6. Here's what I did to clean and fix.
1) Unplug the NHB
2) Remove accessories like the pot and basket
3) Bring NHB over to the sink
4) Snap off the entire top cover (not the swing lid) by starting at the front and lifting upward (the top cover is about 1/4" thick). The back of the top cover will pivot a bit and then pop off exposing the pour reservoir. Remove the flow stopper inside the pour reservoir by lifting it straight up.
5) Place the top cover and flow stopper aside.
6) Remove the brew diffuser (located underneath the top where the brew basket goes. Twist counterclockwise gently but forcefully enough to snap it past the lock tabs which hold it in place. You'll know that it you've done this correctly when it just falls out.
7) Still over the sink, tip the NHB in a fashion where the back side is facing upward and the brew side is facing down into the sink. You'll be holding the NHB horizontally by the top and bottom of the unit. This will allow any water in the tank to pour out the brew spout. Begin to tip the unit as if tipping upside down as this will allow any remaining water to drain out. If this does not work the brew spout hose may be clogged and you can just tip the unit entirely upside down to empty it from the fill hole in the pour reservoir.
8) Return the NHB to the upright position in the sink.
9) Using a scotch brite sponge and some baking soda, clean the inside of the pour reservoir and rinse.
10) Using the tool Bunn provided, clean out the brew spout hose which is located under the brew hat. This is the little hole where the water comes out. If you don't have the tool Bunn provided you could use something like a plastic tie-wrap. Don't use anything metal as the hose you're cleaning is made of plastic tube and could become punctured. Clean this hose for just a minute or two to ensure that there are no significant obstructions.
11) With the NHB upright in the sink, pour a slow stream of hot water from the faucet, about two cups, directly into the fill hole located in the pour reservoir.
12) Tip the unit horizontally, as in step 7, and place the tip of your finger over the pour reservoir fill hole covering it completely.
13) Shake the unit back and forth horizontally so the water in the tank splashes around and frees anything which may be built up in the tank. Some water may splash out of the brew spout hose.
14) Tip the unit as in step 7 to drain the tank water out.
15) Fill a 16 ounce glass with hot water and 2tbsp baking soda, mix and pour into the pour reservoir fill hole.
16) Repeat steps 13 and 14 once.
17) Repeat steps 11 through 14 three times.
18) Clean the pour reservoir cover, swing lid and flow stopper.
19) Put the flow stopper back in place.
20) Attach the top cover.
21) Clean the exterior of the NHB.
22) With the boil and warmer switches off, plug the NHB into the electrical outlet.
23) Turn the boil and warmer plate switches on.
24) Fill the NHB with one pot of cold water and close the swing lid. Wait one minute.
25) Fill the NHB with another pot of cold water. Place the pot on the warmer plate and close the swing lid. If water does not yet come out, fill with one more pot of water.
26) Allow water to drain from brew spout until it stops draining.
27) Empty pot.
28) Fill pot to 10 cup line and pour into the NHB. You should find that the NHB now delivers 10 cups back to the pot. Empty the pot.
29) Clean brew spout diffuser and replace back in the brew hat.
30) Clean the pot, pot lid and brew basket.
31) Wait ten minutes for the water in the tank to boil.
32) Brew your coffee as you normally would.

The only issue I experienced during this process was with the warmer plate switch. It appeared that the light in the switch blew although the warmer plate still warmed normally. Shortly after the water in the tank started boiling the warmer switch light started operating again.

Posted on May 23, 2008

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  • 1 Answer

SOURCE: Won't brew a full pot.

well I hope this helps some, i was having a similar problem with my brewstation and decided to take it apart ( why not, it's already broken! ) this machine has seen a year of very heavy use and I could not bring myself to just throw it away. It would take forever to brew and I would have to turn it off and on several times to brew a full pot. I unplugged the machine, emptied out the water and turned it on it's back. Remove the 4 phillipshead screws and the two torx screws from the bottom ( if you dont have torx handy like me just gently pry the two halves apart till the screws pull through- after you have removed the phillips heads!) at this point the bottom will just come right off, no special tricks. You will now see a horseshoe shaped aluminum tube with orange silicone tubes at either ends of it, this is the heatime element. slide the small hose clamps back away from the element on the hoses and pull the hoses off both sides of the element end only, this will require a little elbow grease to do. Now carefully remove the two phillips screws securing the heating element to the maker BE OBSERVANT AS TO HOW THE WASHERS AND SPACERS ARE SECURED and remove them. To give yourself a little room for the element to come further out of the machine also remove the wiring clamp from the inside, it is a white half "c" plastic piece with 2 screws holding it, it is securing about 7 wires down with wire nuts on them. Once this is removed it will give you enough play to pull the heating element several inches away from the machine, do so. Now look inside the tubes of the element and you should see one side looks clear and clean and the other end is probably going to be clogged solid with tan colored gunk, the water could not pass through!. I took a piece of metal coat hangar (all i had around at the time) and bent it to the conture of the element and used it to **** out the element, uncloging it. this takes a little time because the buildup is very hard to break up. Once that is done carefully wash out the element getting all the build up that was broken up out, CLEAN IT GOOD!. The next step is to dry the exterior and make sure all the wiring is dry, try not to wet the wires at the wiring nuts or it may short out. Now re assemble the machine, run cleaner through and enjoy a cup of coffee !!

Posted on Oct 13, 2008

  • 2 Answers

SOURCE: Bunn Coffee Pot Leaks Water

I obtained Bunn washer seal repair kit from buy-it-now-store.com for $6 plus $7 S&H and it solved the problem.

Posted on Mar 08, 2009

ThaMp3Doctor
  • 8596 Answers

SOURCE: Cuisinart Grind and Brew will not emply all the water

The two most common reasons for overflow or underflow have to do with the carafe lid and the filter basket - they key to smooth flow with this coffee maker is making sure the filter basket and carafe lid are making the proper contact with each other so that the center knob on the carafe lid pushes slightly up on the filter basket spring. Make sure the carafe lid is completely closed. Make sure the filter basket is pushed all the way down. Make sure you are not using the gold tone filter and a paper filter at the same time. For some reason, I get better results when the handle of the carafe is resting against the right side wall. If everything is in place, I would suspect a problem with either the filter basket being clogged or some problem with the carafe lid - call Cuisinart as they should be able to order these parts for you.

Posted on Sep 29, 2009

EsWorld
  • 1618 Answers

SOURCE: Bunn cwtf15 coffee isn't hot enough

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

Posted on Dec 07, 2009

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1 Answer

My Bunn CWTF15 coffee maker will not brew a pot when the brew button is pushed. The unit will dispense hot water from the spigot Is the a potential blockage or is it more complex


You should call your vendor for service on any commercial brewer. (Especially if it's on loan from them)
*** the following is for information only as all repairs should be performed by a qualified tech.***

The CWTF has a start switch activates the timer (analog or digital) board which turns on the water feed to the brew tank. This forces previously heated water out and sprayed over the ground coffee in the brew funnel. Coffee then drips into the decanter.
* It's not often this momentary brew switch goes bad even though it's pressed many times a day.
* Check the on/off switch. Most models will light up when switched on.
* Check the timer. Digital timers tend to be sensitive to electrical storms. Analog timers have a dial and are more tolerant of electrical surges.
* Check the water fill solenoid. Should be a definite click when activated. Water filling sound should be very clear.
* No water flow then check the water supply line if it's on.
* Final; this brewer needs service. Call your coffee vendor for advice.
Aloha, ukboy57

Jan 30, 2018 | Bunn Coffee Makers & Espresso Machines

2 Answers

CWTF15 WILL NOT STOP WATER FLOW WHEN POT IS MADE.


The coffee dispensing valve is stuck open. It may be due to Calcium deposits.
Descale the machine or manually clean the dispensing valve and the diffuser disc that unscrews to be removed. This diffuser is visible just above the coffee pot.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edward_bbd2c7ff4ee1828a

Oct 16, 2014 | Bunn CWTF15

1 Answer

Bunn cwtf15 3L pf


You should call your vendor for service on any commercial brewer. (Especially if it's on loan from them)
*** the following is for information only as all repairs should be performed by a qualified tech.***
* There is an on/off heater switch located in the back of the brewer. This should be on when the brewer is needed. There will be a 20 minute wait for the "ready" to brew light comes on. If you brew before the light comes on then the coffee will be only warm.
* If everything is on and looks okay but it takes forever to light the ready light then the main heater is not working. Call your vendor for service.
Aloha, ukboy57

P.S. The 3 liter brewer has a much larger tank than the regular 2.5 brewer. So expect it to take a bit longer to reheat a full brew. Some customers will request the 'Airpot' or 'Pump pot' to be filled to the top which means even more water is needed to be heated. Expect at least a 20-30 minute wait on reheating. I've found that customers that use this large a pump pot will brew +3 pots in a row. (Regular, Decafe, and a 2nd regular or 'flavored' coffee.) Often brewing without waiting for the ready light. If this is the case then mention this to your vendor. You may need a 2nd brewer, larger brewer, or have the brewer hooked up to the 'Hot' water line to get pre-heated water to the brewer (though they may need to modify the water valve to one that is rated for hot water inlet line.). If your using larger 3L decanters then having pre-heated decanters and using the 'pour over' function can aid with faster brews. Though this method is a lot of work for the operator.

May 07, 2014 | Bunn Coffee Makers & Espresso Machines

1 Answer

Pot only filling half way


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.

Sep 24, 2010 | Bunn CWTF15-TC

1 Answer

Does the light have to turn green before we can brew coffee?


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.

Sep 13, 2010 | Bunn CWTF15-TC

2 Answers

I have a Bunn CWTF15. Water does not fill the coffee pot full anymore. Is there a float that needs to be adjusted? Would descaling help this problem? Thank you.


If u haven't cleaned it out using 3/4 vinegar to 1/4 water, some times this will happen. after running this thru ur coffee maker, (u won't believe the junk that comes out), then run full pots of water to rinse out (2x's). This should help it perform better.

Sep 12, 2010 | Bunn Automatic Coffee Brewer CWTF15 1

2 Answers

Pot overflows before shutting off


The brew volume needs to be programmed, remove the 6 screws on the front panel and you will find the instructions to do this.

Sep 07, 2010 | Bunn Automatic Coffee Brewer CWTF15 1

1 Answer

After brewering the level in the pot is a little low .


We could have 2 things going, the easiest is to remove the spray head, and using the deliming spring clean out the brew tube.
The hard way is to check the water level, brew 2 pots to check level, if you get the exact amount in both pots, then wee will program the brewer. Depending the model you might have a timer knob behind panel or a circuit board.
If timer knob then turn to a longer time settings.
If a circuit board the settings and instruction are pasted on the front label.

Jun 01, 2009 | Bunn Automatic Coffee Brewer CWTF15 1

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