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Ninja Coffee Bar CF086 Troubleshooting

Diagnose problems with the Ninja Coffee Bar CF086 using this troubleshooting page.

Brew Will Not Start ¶ 

Your coffee maker does not initiate a brew.

Faulty Power Supply ¶ 

Check to make sure the display is illuminated. If there are no lights on the coffee-maker, it has no power. Press the Power button, and if that doesn't work, try a different outlet. Otherwise, try replacing the power cord.

Empty Water Reservoir ¶ 

Refill the water reservoir, and reselect your brew size and type to restart the brew cycle.

Closed Drip Stop ¶ 

Check to make sure the drip stop is open. If the machine beeps five times, either the Drop Stop is closed or the water reservoir holds insufficient water.

Misaligned Brew Basket ¶ 

Remove the brew basket and reinsert it by aligning it with the rails, then slide it into the brewer until it clicks into place.

Cleaning Needed ¶ 

If all else fails, run the Clean Cycle.

Brew Basket Dripping After Brew ¶ 

Your coffee maker drips after use.

Open Drip Stop ¶ 

Once the brew cycle is complete, move the drip stop to the closed position (denoted by the image of a water droplet with a slash through it) before removing your brewing vessel.

Overflowed Cup, Travel Mug, or Carafe ¶ 

Brew basket is overflowing and water and grounds are coming out the sides.

Incorrectly-Sized Cup ¶ 

Make sure cup or carafe is the right size.

Cup: 9.5 oz

Travel mug: 14 oz

Half carafe: 19 oz

Full carafe: 38 oz

If you need to install a replacement carafe lid, refer to this guide.

Cleaning Needed ¶ 

If spilling persists despite correct vessel size, then perform a Clean Cycle, using coffee-maker descaling solution.

Water Reservoir is Leaking ¶ 

Your machine is leaking coffee or water from the brew basket.

This May Not Be a Problem ¶ 

If water drips from the reservoir when it is removed, this is normal, don’t worry. Simply use a dry cloth to wipe away the water droplets from the machine after it has cooled.

Faulty Tube Connectors ¶ 

If the coffee maker is leaking coffee or sputtering, inspect the tube connectors for leaks. If you find the leak is in an elbow, clean the surfaces before you replace it. If the tube connector leaks, replace both the tube and the elbow so that you can be sure the pieces will both fit together properly.

Overfilled Water Reservoir ¶ 

Fill the water up to, but not exceeding, the Max Fill line. If necessary, replace the water reservoir lid.

Sediment in Coffee ¶ 

Unwanted sediment appears at the bottom of your brewed coffee.

Finely Ground Coffee in Permanent Filter ¶ 

To reduce the amount of sediment in your coffee, try using a slightly coarser grind or a paper filter.

Excess Grounds in Brew Basket ¶ 

If you’re still finding sediment in your coffee, make sure the brew basket did not overflow. If there are too many grounds in the brew basket, the grounds will flow into an overflow channel designed to make sure overflow is captured in the brew vessel.

Opened brew basket to fill with coffee, now it is stuck in the open position.

REGINA PRIZNAR Michael - Reply

Mine is brand new and won't close either.


Mine won't close either and is brand new.


Maker will not make a full pot. Runs for about 20 seconds and shuts off. It doesn’t appear to be clogged up. You can keep hitting the button every time it goes off and eventually the pot will be made. Tried unplugging to reset and that didn’t work. Maker is about 6 months old.

Laura Woolam - Reply

Did you get and answer to your question. Mine is doing the same thing.

Rosemary Morgan -

Did you get an answer to your question? Mine is doing the same thing

Rosemary Morgan -

This happened to me this morning. Brewed for 10 seconds, then beeped and shut off. Couldn’t find a solution online and since I’ve always been one to push any button just to see what it does, I decided to brainstorm. This is what I’ve come up with and it is working well for me.

Inside the water reservoir, at the bottom, is a small plastic bubble that feeds the air/water exchange, so as to avoid vapor lock. On the top of that bubble is a very small, thin flap. I noted that this flap was not readily flapping to allow water to flow from the reservoir to the coffee maker. I carefully took a sharp knife and moved the flap so it is now in a half open position.

I ran 3 pots of plain water through to test my theory and it works like a charm. 2 pots of coffee later, and it’s still a success.

Cindy L -

Thanks Cindy P for your solution I now get a full coffee pot of water. I had this for almost a year and was getting ready to throw it literally away. I brew coffee for family and friends so a half of pot was really laughable.

Jennifer L -

I have the same issue mine is only two months old

Pam williamson - Reply

Having same issue with mine. Drips about shoot glass worth of coffee and stops.

Anyone have any suggestions??

Stephen s moreno - Reply

Same issues here.

Drips about shoot glass size worth of coffee than stops.

Anyone have any ideas??

Stephen s moreno - Reply

Any responses to this? Mine drips like this too. Not sure how you create a “drip stop” but it still drips.

Schawn Pritchett -

I have run the cleaning cycle 3 times with vinegar and water, but still the light is on. I have previously used descaler, but the same problem occurred. There is also a long solid beep at the end of a regular coffee cycle (just since the light went on). I only use bottled water.

Linda McDonald - Reply

Brew basket keeps overflowing, even if I only run water through. I’ve cleaned the coffee pot more than once to no avail. It’s obviously not an issue with too much coffee or finely ground coffee if it continues to overflow with no coffee in the filter. I haven’t even had it 6 months!

KatRuthNov26 - Reply

Brew basket keeps overflowing, even with no coffee in the filter. Have cleaned the machine multiple times, both with vinegar and water and a rescaled, to no avail. Too much coffee or too finely ground coffee obviously isn’t the issue since it overflows without coffee added. I only use bottled water, so that isn’t the problem, either. Haven’t had the machine 6 months and can’t get a single cup of coffee!

KatRuthNov26 - Reply

Thanks Cindy P for your solution on December 3rd. Moving the thin plastic flap over finally gave me a full coffee pot of water. I’ve had this for about a year and was getting ready to get rid of it. Have not used it in a long time just got tired of inviting family and friends for coffee and got only an half a pot of water. It was collecting dust. Thought I tried researching and finally came across your solution. Ninja customer service service had no solutions. Again, thanks.

Jennifer L - Reply

Got this 2 days ago, did the clean cycle x 2 before use, but it only went 1/2 carafe both times, even when the setting was full. I thought maybe that was normal for clean. But first full pot I brewed kept stopping after a couple of minutes and I had to keep pushing the button to restart. I came to this forum, and noticed the frequent advice to clean again. I did a total of 3 cycles, brewed normally, a complete carafe as expected. I highly suggest doing this often, doesn't hurt it any, and cleans your coffee maker, I love the coffee from this Ninja, by the way!!

Nancy Hubler - Reply

I just got this coffee maker for Christmas, and I can brew a pot of coffee no problem, but when it comes to the travel mug or cup option, I get a few drops and then it stops! I have to hit the brew button twice every single time. I’ve tried everything including pressing on the little plastic bubble but nothing seems to fix it, i’m ready to throw it in the trash!! Anyone have a suggestion to fix this? Thanks!


Brittany - Reply

Never finished dripping what’s in the basket. Have to swirl around the grinds to get rest of coffee out. Help!

Cheryl - Reply

I’ve had the same problem with it working for about 30 seconds then beeping and stopping. This is my second Ninja Coffee Bar; the 1st one did the same thing, both after about 6mo of use. We clean it regularly, we’ve used descaling solution and vinegar and water. Frankly, I think there is something wrong with these machines. I like the look of them and the coffee they make, but I’m tired of all the maintenance and them not working after 6ish months. I’m getting a different machine. Now that I see other people have the same problem, I’m even more convinced they are junk.

Hanna Martin-McArron - Reply

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