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🔧 Owner's Guides · 202616 oz of white vinegar, water to the line, press CLEAN and leave it about an hour. Each Ninja family's steps from its guide, plus CLn, CLOG and the clean light.
Fill the reservoir to the Travel Mug line (16 oz) with white vinegar, top it up with water to the Max line, put the empty carafe under the basket and press CLEAN. On the DualBrew and Pods & Grounds machines, press CLEAN and then the brew button. The cycle pauses and restarts on its own and takes about an hour, or about 75 minutes on DualBrew and single-serve models. Do not remove the carafe. When it finishes it beeps, shows End and the CLEAN light goes off. Then wash the reservoir and run one full Classic brew with water only. A commercial coffee-maker descaler works in place of vinegar.
The clean cycle in Ninja's guides. The carafe stays in place for the whole cycle, and plain water alone does not descale.
On a Ninja coffee maker, the clean cycle is a descaling cycle. Ninja's CM400 guide says the CLEAN button lights when a cleaning cycle is recommended for your unit, as calcium scale buildup could be affecting the flavor of your coffee.
On the DualBrew and Pods & Grounds machines it is an orange Intelligent Clean Cycle Indicator.
Hard water brings it on sooner. Ninja's guides say hard water builds scale faster and the brewer will ask for cleaning more often; none of the guides we read has a water-hardness setting.
The light resets itself. When a clean cycle completes, it goes off; there is no button combination to clear it without cleaning. If it comes back on soon after, Ninja's troubleshooting tables say you may need a second cycle to remove more of the build-up.
From the CM400 guide, which the CM360/CM371 guide follows almost word for word:
Fill the water reservoir to the Travel Mug line (16 oz.) with white vinegar, then fill the rest of the reservoir with water up to, but not exceeding, the Max Fill line.Or use a coffee-maker descaling solution, following its package. Ninja asks for white vinegar only, not other kinds.
DO NOT remove the carafe at any time throughout the clean cycle.
CE251. The Fresh Brew has a clean function you can run whenever you like; its guide suggests running it when a full carafe starts taking longer than 12 to 15 minutes. Make sure Small Batch is off, add 16 oz of white vinegar and fill with water to the 12-cup line (60 fl oz), then press CLEAN. Its guide gives about 25 to 35 minutes, then a 12-cup Classic brew with water only.
The DualBrew machines clean each mode separately. The CFP300 guide says Each mode that you use will eventually need to be cleaned with a clean cycle.
When the indicator first lights, clean the mode you use most; the next time, clean the other. If you use Hot Water mode at all, give it its own cycle too.
The solution is the same: 16 oz of white vinegar to the Travel Mug line, water to the Full line. Press CLEAN, then START BREW to confirm; it takes about 75 minutes. Afterwards, flush with a Full Carafe Classic brew for Grounds, a 12 oz Classic brew for Pods, or a Full Carafe on Boil for Hot Water.
Pods & Grounds single-serve (PB051). You need a vessel that holds at least 56 oz, such as a 2-quart bowl, under the spout. Ninja's US FAQ fills the reservoir to the CLEAN line with white vinegar or descaling solution, then to MAX with water; press CLEAN, then BREW. The cycle takes 75 minutes; flush afterwards with a 24 oz Classic water-only brew.
CFN601. The grounds side cleans like a DualBrew, started with the Grounds button then CLEAN. The capsule side has its own cycle, which Ninja's Canadian guide says can take up to 2 hours; run it when capsules start taking noticeably longer to brew.
If the clock shows CLn (CM401, DualBrew, CFN601) or CLOG (CM371), Ninja's guides say there is heavy scale build-up on the heater and you need to run a clean cycle before brewing again. On the DualBrew, ignoring the orange indicator long enough can stop the machine mid-brew with CLn.
Two things the guides are clear on. Running a water-only clean cycle will not descale the brewer properly.
And cancelling a cycle partway leaves the machine not properly descaled, so if you do cancel, still wash the reservoir and run the water-only flush to clear the vinegar out.
Ninja's guides ask for the system to be cleaned weekly, and the reservoir washed weekly. On the CM401, the glass carafe, brew-through lid, permanent filter, filter holder, water reservoir, flip-top lid, frother whisk and scoop are dishwasher safe; on the DualBrew Pro, the sliding lid and the pod adapter are not. Rinse the frother whisk after every use. Do not use a wire brush on the carafe.
Overflowing basket. Usually coffee ground too fine or too much of it; Ninja recommends medium grind. Do not use the permanent filter and a paper filter together: the CM400 guide says Using both the permanent filter and a paper filter can cause grounds to clog and water to back up in the brew basket.
Pod side brewing short or sputtering. The Pods & Grounds guide says grounds can build up in the top needle and clears it with a flat wire or a paper clip. The needle is sharp: unplug the machine first.
If a leak comes from the bottom of the machine, Ninja's guide says to call its customer service rather than open it. Choosing a new machine? See which Ninja coffee maker to buy.
Ninja does not sell a descaler for these machines; its guides accept white vinegar or any descaling solution made for coffee makers. The descaler below states its own compatibility with drip coffee makers. Each product fact is the listing's own statement, read on the date shown on the card.
One of the two descalers Moccamaster itself recommends. Listing states a universally compatible descaler for Keurig, Nespresso, Breville, Jura, De'Longhi and other drip coffee makers, in a 2 pack.
Check price on Amazon →
Ninja's plain 12-cup drip machine, and the cheapest way into the range. Listing states Classic or Rich brew styles, a 12-cup glass carafe, a small batch function for 1 to 4 cups, 24-hour delay brew, a warming plate that keeps coffee up to 4 hours, a 60-oz removable reservoir, mid-brew pause and a clean setting.
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Single cups to a 10-cup pot from grounds, with a frother for milk drinks. Listing states Classic, Rich, Over Ice and Specialty brew styles, a Specialty concentrate for lattes and cappuccinos, 6 sizes from a cup to a full carafe, a built-in fold-away frother, a 50-oz (10-cup) glass carafe and top-rack dishwasher-safe parts including the reservoir.
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Pods, a pot, a frother and a hot water spout in one machine. Listing states grounds and K-Cup pods in 13 sizes, Classic, Rich, Over Ice and Specialty styles, a separate hot water system with hot and boil settings, a fold-away frother, a 60-oz multi-position reservoir and a 12-cup glass carafe.
Check price on Amazon →Fill the reservoir to the Travel Mug line (16 oz) with white vinegar, add water to the Max or Full line, put the empty carafe in place and press CLEAN, then START BREW or BREW on DualBrew and single-serve models. Leave the carafe in place for the whole cycle. When the CLEAN light goes off, wash the reservoir and run one full Classic brew with water only.
About 60 minutes on the Specialty CM401, about 75 minutes on the DualBrew and Pods & Grounds machines, and about 25 to 35 minutes on the Fresh Brew CE251, per Ninja's guides. The capsule side of the CFN601 can take up to 2 hours.
Run a clean cycle to the end. Ninja's guides say the CLEAN light turns off when a cycle completes; none we read gives a way to clear it otherwise. If it comes back on soon, run a second cycle.
Heavy scale build-up on the heater. Ninja's guides say to run a clean cycle before brewing again. The Hot & Iced XL CM371 shows CLOG for the same thing.
Yes. Ninja's guides accept a descaling solution specifically formulated for coffee makers, used as its package directs, as an alternative to white vinegar. Plain water alone will not descale the machine.
Run a clean cycle when the CLEAN light comes on, which happens sooner with hard water. Ninja's guides also ask for the system to be cleaned weekly. Its warranty excludes failure to run regular cleaning cycles.
Sources for this page: Ninja CM400 Series Owner's Guide (CM401), CM360/CM371 Owner's Guide, CFP300 Series DualBrew Pro Owner's Guide, PB040C Owner's Guide (Canadian edition) and CFN600C Series Owner's Guide (Canadian edition); Ninja's support sites refused our requests, so each was read from its web.archive.org copy of support.ninjakitchen.com, 2026-10-30 · Ninja CE200 Series Owner's Guide (CE251), Ninja's PDF as hosted by the retailer P.C. Richard, static.pcrichard.com, read 2026-10-30 · PB040 / PB050 Series Ninja Pods & Grounds Coffee Maker FAQs, support.ninjakitchen.com, read via web.archive.org 2026-10-30 We have not lab-tested brewers; where a figure is a manufacturer's, the page names the manufacturer, and machine capabilities come from our own published review records.
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