Question about Bunn CWTF15

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CWTF15 WILL NOT STOP WATER FLOW WHEN POT IS MADE.

Water flow continues to run and will not stop when pot is full. Water flow will continue until second pot is filled?

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2 Answers

Mark Cheong

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  • 791 Answers

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. Overfilling is caused by un-calibrated timer or interment timing.
* The timer comes in two types; Dial (old) and Digital. If it's the dial then a simple turn of the dial will make less or more water flow to decanter. You MUST re-brew (no coffee, but use funnel) into the decanter or pot that you plan to use. Don't mix up different size pots as the timer is only good for 1 setting. Turn dial and brew once to check. Keep checking with a brew after each adjustment. Do a final brew just to be sure.
* The digital timer is a bit more complicated to adjust. Sorry, too many switches and options to go into it here. Check Bunn.com for a manual (FREE download) on line. Several methods are listed. The fill and stop is the easiest one.
* If it does not adjust or won't keep the set time then. Replace 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

P.S. I'm assuming the brewer does eventually stop brewing. If water flows with no stopping then the fill valve is stuck open and needs to be replaced. Yes, others have mentioned to clean it but it will fail again and again. Better to replace.

Tip, Older timers usually are reliable. It may have been set for a larger decanter or pump pot. The pump pots come in 2.5L and 3L for the big boys. Decanters are 10 cup and standard 12 cup. Check your office as there may be an unused 3L pump pot in a cupboard that got put away for making "too much" coffee. Try a brew in this larger pump pot.

Posted on Jan 31, 2018

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Edward Harris

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  • Expert
  • 78 Answers

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

Posted on Oct 18, 2014

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5 Related Answers

Anonymous

  • 42 Answers

SOURCE: It fills the pot very slow - how do you clean it?

there is also some chemical to flush thriufh a cycle called C.L.R. IT IS FOR CALCIUM LIME AND RUST ALOT OF HARD WATER DEPOSITS COME IN OUR DRINKINK WATERS.THE USE DISTILLED WATER AFTER YOU ARE FINISHED AND IT WILL NOT CLOG AS FAST

Posted on Nov 12, 2008

Anonymous

  • 124 Answers

SOURCE: The water starts flowing for about a minute then

This sounds like normal operation of this type of unit.

Look at the brew funnel. is coffee coming out of it all the time during the brew cycle?

If so, then what you are hearing is the water supply solenoid cycling.

Posted on Jan 03, 2010

Anonymous

  • 12 Answers

SOURCE: I have a Bunn CWTF15. Water does not fill the

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.

Posted on Sep 12, 2010

Anonymous

  • 23 Answers

SOURCE: cleaned my pot but the water is running very slow.

First thing to check is that there is no blockage in the funnel. Next thing is check the spray head and make sure that it is not limed up. After removing the funnel there will be a round silver head that screws in above the funnel, it can be removed by hand but usually you need a pair of channel locks. If so you can clean the spray head with a wire brush. Also if that is not an issue you can purchase a deliming spring from http://www.google.com/imgres?imgurl=http://ecx.images-amazon.com/images/I/21IeXJoqjnL._SL500_AA300_.jpg&imgrefurl=http://www.amazon.com/Bunn-Commercial-Deliming-Spring/dp/B0032QNRH2&usg=__mJkJExy1qExfrZEEbtxW6EAQGSw=&h=300&w=300&sz=5&hl=en&start=4&zoom=1&itbs=1&tbnid=tHf1BPtEJIafsM:&tbnh=116&tbnw=116&prev=/images%3Fq%3Ddeliming%2Bspring%26hl%3Den%26gbv%3D2%26tbs%3Disch:1
WIth the deliming spring you need to remove the spray head and simply run the spring through the hole til you hit the water in the tank and pull it back and forth about 4 or 5 times. Also something siple make sure there is only one coffee filter it is easy to put two in. Hope this helps.
www.midstatebeverage.com

Posted on Dec 01, 2010

Anonymous

  • 91 Answers

SOURCE: WE HAVE A BUNN VLPF SERIES COFFEE MAKER. WHEN YOU

Sounds like your timer part #32400.0002.This is the new type timer which replaces the dial timer.Another thing is does this happen when you turn on the on/off switch? I would also check your liquid level probe in top of tank.Always a possibility bad liquid level board.If it only does this when you push the brew button the timer is bad.

Posted on Feb 11, 2011

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1 Answer

I just bought the Bunn VLPF series, double burner. My other Bunn coffee pot had the option of make a half pot of coffee but this one does not Is there a tip to follow for half a pot?


Sorry this brewer is usually set up for a full pot brew. I have reset this for a small (but not half) pot brew as the customer wanted to use a metal carafe (with their own logo). I also tried once to get it to half pot brew but it can get tricky if you actually brew twice to get a full pot (in the same pot).
* there is a siphon action that starts once the boiler tank gets filled to a certain point. From that point it will continue to flow until the boiler is emptied to the level that stops the siphon action and leaves enough water in boiler to reheat for the next brew. Achieving the siphon point may be a larger volume of water for 1/2 a pot but may work for 3/4ths a pot. The 1/2 way mark may be affected by the brewers "level" while placed on a table or sagging in the middle of a weak table.
* Usually if you want a smaller brew then go with a smaller brewer. Though there is a hot water tap that will give you 2-4 cups of hot water (it gets tepid after that) which you can use for the "Mug" style brew. But it does get messy.ukeboy57
* Final, If you don't mind a little more than 1/2 pot brews then ask your vendor to adjust the machine for you. Though a reminder NOT the double brew in the same pot as it will overflow.
Aloha, ukeboy57

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Water overfill


The A10 has a semi-sealed tank that keeps +1 pot of water heated and ready to brew. Pouring in a full pot of cold water will fill the top tray and allow a slow trickle of cold water into the top which forces hot water to over flow into the brew basket. This continues until all the cold water drains into the heater tank. So the brew is matched volume per volume. UNLESS the tank was empty or not filled prior to brewing. Follow the brewing instructions from Bunn (on line for *FREE* download at Bunn.com)
* If it leaks (from the bottom) only when you pour in water. Then your pouring it too fast and over flowing the fill tray. slowdown, watch the level in the tray. do not fill past the lid.
* If it leaks just sitting (not brewing) then there is a hole in the tank. Call for service.
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* Final; Leaks are always bad around electrical equip. Best to unplug and call for service to be safe.
Aloha, ukeboy57

PS. Check your using the correct size decanter for this brewer. If it's a 10 cup brewer then make sure all the decanters in the office is also 10 cup. Pouring a 12 cup pot into brewer will have 12 cups of coffee come out (over flowing the 10 cup pot.) Note that not all decanters are made the same size. Other brands may be different. Test by filling a pot with water (from faucet) then pouring directly into pot in question. It should match and not under fill nor over fill.

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Sounds like your timer part #32400.0002.This is the new type timer which replaces the dial timer.Another thing is does this happen when you turn on the on/off switch? I would also check your liquid level probe in top of tank.Always a possibility bad liquid level board.If it only does this when you push the brew button the timer is bad.

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