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Bunn coffee pot makes loud whistling noises when making coffee

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6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: TAKE 45 MIN TO MAKE A POT OF COFFEE

you said you clean it you use vinegar or decalcifier vinegar remove calcium in piece it might block the orifise if you use decalcifier it melt the calcium 1part solution to 1 part water dont forget to rinse very good that stuff is nasty cheers

Posted on Jan 26, 2008

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  • 5 Answers

SOURCE: Bunn coffee drips slow

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

  • 60 Answers

SOURCE: Bunn VPS 3

Are you leaving the machine plugged in all of the time? If not, you need to. The machine takes approximately 10 minutes to get to full temperature the first time then the water should stay hot from then on. Or it could be that you just need to turn up the thermostat. No, the water won't get hotter sitting on the burner and the coffee won't taste as good if the water you are brewing with isn't hot enough.

To get to the thermostat, unplug the machine and take the two screws on the top lid off. You should see a box that has a knob or a T sticking out of it. Turn it up a little bit, put the lid back on and let the heat up for a little while (10 - 15 minutes). Try brewing with just plain water. If it still isn't hot enough, repeat the steps above. Make sure you don't turn up the thermostat so much that the water boils.

Posted on Nov 06, 2008

  • 131 Answers

SOURCE: Water supply for Bunn coffee maker

open the cover on the brewer- depending on your model, it could be the front or the back cover. look for a brew timer dial. turn this up slowly, running a brew each time to see if you now have a full pot

Posted on Feb 10, 2009

  • 131 Answers

SOURCE: Bunn coffee maker reservoir makes a gurgling noise

THis sound is usually caused by the water being low in the tank. This can be because the machine is left on for long periods without being used. If this is not the case, then it would probably be your heating element getting small holes in it.

Posted on Feb 12, 2009

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1 Answer

Coffee is in water is in nothing happens


You may not have enough water in the tank.
Follow these steps

1. With the coffee pot unplugged, fill your resevoir/tank until water begins pouring out of your sprayhead and brew basket.
2. Wait for the water to finish dripping then plug in your Bunn.
3. Let your Bunn warm up for at least 8 minutes.
4. Run a test cycle with clean water, remembering to use the water pitcher provided for this purpose, while leaving your empty pot on the burner beneath the brew basket.
5. If your cycle completed, and your coffee pot is filled to the desired level you are ready to make coffee.

Remember that these Bunn models have no water filter2_bing.gif installed, so, the cleaner the water the better tasting the coffee.

Jan 04, 2010 | Bunn VPR Coffee Maker

1 Answer

My bunn coffee maker is making loud noises when it heats, I know it needs cleaning but I lost the book that tells me what to put into it. I did it once and it was quiet. I can't find that book now. Thank...


The noise can occur when there is a heavy buildup of calcium on the heater coil. This causes the coil to get much hotter since the layer of calcium acts as an insulator and the water may come to a boil because the coil rises to a high temperature trying to heat the water.
Unless it is too clogged, this may help; empty the water out completely, then put two cups of regular vinegar in the water chamber and turn on the power for a half-minute or until liquid appears in the pot.
Let it sit overnight and then let the remaining vinegar pump through. You will have to run several pots of water through the machine or have some really strange-tasting coffee.
There are commercial products that act more quickly and thoroughly than vinegar but also much more caustic.

Nov 18, 2009 | Bunn Coffee Makers & Espresso Machines

1 Answer

My bunn coffee pot is leeaking water out the


Please get the model and date code located on the bottom of the brewer. The machine has a 3 year limited warranty. If the machine is 3 years or less, the machine will be replaced at no cost. If it is over 3 years, then it can be replaced at a reduced cost.

Nov 08, 2009 | Bunn NHB Coffee Maker

1 Answer

I have a bunn coffee maker, BT10-13. The reserve water takes very long to reheat after making a pot of coffee. Thus I can't make a second pot of coffee for a long time.


Are you rapid firing your coffee maker?Not designed to do that.. If the water heated that fast it would boil dry if you ever left it unattended and on. The reservoir is heated with the time it takes to drink a full pot taken into consideration for reheating.. If you are serving 20 cups with a 10 cup machine, Expect a delay, especially if you are refilling with cold tap water. Sorry.

Jun 30, 2009 | Bunn B10 Coffee Maker

2 Answers

Bunn coffee pot blows water out top of basket


Check the grind on the coffee, brew a pot without coffee and if it overflows, then the machine has a problem. If it doesn't then try a coarser grind on the coffee.

Jun 14, 2009 | Bunn Coffee Pots: Thermal Carafe

1 Answer

Bunn coffee maker makes a noise empty just like it does after the


Hello. What your hearing is the water being heated in the tank, these machines hold a couple pots of water at brewing temp all the time, unless you unplug it from the wall, or turn off the heater switch if you have one. So, as the day goes on, it will intermittently have to heat the water in order to keep it at the proper temp. I would not worry about it too much, unless water is spitting out when it does this.

Hope that helped, and thank you.

Jan 25, 2009 | Bunn NHB Coffee Maker

1 Answer

Bunn coffee maker reservoir makes a gurgling noise


THis sound is usually caused by the water being low in the tank. This can be because the machine is left on for long periods without being used. If this is not the case, then it would probably be your heating element getting small holes in it.

Jan 12, 2009 | Bunn Pour-Omatic Coffeemaker, 10 Cup White

2 Answers

Bunn Coffee machine only makes 1/2 pot


What's happening is that it isn't leaking, it's boiling over. You need to turn down the thermostat under the top lid. Also, before you brew coffee, add water to the tank and let it pour into an empty pot. Once it stops brewing, let it heat up for a few minutes then make your pot of coffee.

Jan 02, 2009 | Bunn Pour-Omatic Coffeemaker, 10 Cup White

1 Answer

Bunn Cooffee Maker is not making full pots of coffee


I would ask if this machine has been moved lately- for cleaning or has anyone put anything new around the brewer? If someone has moved this brewer, they might have caused a kink in the line coming to the back of the brewer. this will restrict the water flow to the brewer. this will cause the brewer to brew only part pots of coffee.

Nov 13, 2008 | Bunn NHB Coffee Maker

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