Ninja Hot & Cold Brewed System™ with Thermal Carafe Series | Official Ninja® Product Support & Information

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Product support & information

Product series

Ninja Hot & Cold Brewed System with Thermal Carafe

Model #s

CP307, CP307C

Ninja Hot and Cold Brew System
Ninja Hot and Cold Brew System
Ninja Hot and Cold Brew System
I turned the warming plate off by pressing STAY WARM, but the HOT SURFACE light is still on.
On the glass carafe version, the HOT SURFACE indicator is a safety feature that illuminates when the warming plate is hot. The HOT SURFACE indicator will remain on until the warming plate has cooled to a safe temperature. Do not touch the surface when this light is illuminated.

There is no warming plate on the thermal carafe version.
Did this solve your problem? Yes NoGreat! We're happy to hear it.Please call Customer Care at 1-866-826-6941
If my unit comes with a permanent coffee filter, do I need to also use a paper filter?
No, a paper filter and the permanent filter should NOT be used together when brewing coffee. Using both the permanent filter and a paper filter may result in clogging or water and/or coffee backing up in the brew basket.
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What grind size of coffee and what size paper filter should I use?
A medium grind coffee is recommended. The brew basket is designed to fit a #4 cone paper filter.

Note: Some models come with a permanent filter and should not be used with a paper filter.
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Why are my Over Ice Brew or Cold Brew beverages not brewed cold?
Ensure your cup, travel mug, or carafe is filled all the way to the top with ice cubes before brewing. Your Ninja Hot & Cold Brewed System will brew at elevated temperatures to lock in the best flavor, then the ice will cool the brewed coffee or tea to the perfect temperature.
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Why are there instructions on both sides of the Ninja Smart Scoop?
One side of our Ninja Smart Scoop is used for coffee and the other for tea. COFFEE measurements are on top, and TEA measurements on the bottom. The numbers beside the icons show the number of scoops recommended for each brew size.

COFFEE (on TOP): Use the LARGE scoop for Half Carafe, Full Carafe, or a Specialty coffee; use the SMALL scoop for all other coffee sizes.

TEA (on the BOTTOM, in GREEN): Use the LARGE scoop for Specialty tea; use the SMALL scoop for all other tea sizes.
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Why did the brewing cycle produce less coffee/tea than expected?
Each size and brew type produces a different amount of coffee to optimize strength and taste. For example, Rich brew will yield less coffee than Classic brew. Over Ice produces a concentrated amount of coffee that drips over ice to create an iced coffee that's never watered down. Specialty brew will always produce 4 oz. for coffee and 6 oz. for tea.
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Why do I have to select a Tea Type?
Tea can be made from hard, dense ingredients like spices and dried fruit, or soft, delicate ingredients. Each tea type requires different brewing temperatures to yield the best flavor. The system is expertly calibrated to brew each of the major types of tea—Herbal, Black, White, Oolong, Green—at the ideal temperature, bringing out their freshest flavors and complex nuances.
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Why does it take over 10 minutes to make Cold Brew?
Cold Brew is a slow extraction process that brews at an accelerated lower temperature. Because it is brewing at a lower temperature, the brew takes longer to completely extract the flavor.
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Why is my green tea brewed at a cooler temperature?
Green tea is delicate, and therefore requires a lower brewing temperature (about 170°F–175°F). If brewed with water that is too hot, it becomes bitter. If you would like your green tea stronger, we recommend using the Rich setting, which results in a stronger taste.
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Why is my Over Ice/Cold Brew tea sometimes cloudy?
When hot tea comes in contact with ice, antioxidants bind together and create a cloudy appearance. This is harmless, and indicates that the tea is fresh and high quality. The following tips may improve clarity:
  1. Use filtered or spring water.
  2. Use high-quality loose-leaf tea that isn't powdery.
  3. If your tea leaves are small and dense, try using a little less of them.
Did this solve your problem? Yes NoGreat! We're happy to hear it.Please call Customer Care at 1-866-826-6941
Why is there no warming plate on the thermal carafe model?
The thermal carafe has double-walled insulation, which keeps heat locked inside. The insulation barrier means the heat from the warming plate will not reach the inside of the carafe or affect the temperature of the coffee.
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Why is there water left in the reservoir after a brew?
The water reservoir markings are minimum fill lines that indicate the amount of water needed for that brew size. However, all brew styles use different amounts of water to create the proper flavor and concentration, so occasionally some water may remain in the reservoir.
Did this solve your problem? Yes NoGreat! We're happy to hear it.Please call Customer Care at 1-866-826-6941
Why are there two filter holders? Can I use the Coffee and Tea filter holders interchangeably?
Both Coffee and Tea filter holders are specifically designed for optimal brewing. The system will detect if the Coffee or Tea filter holder is inserted when the brew basket is closed, and will brew accordingly. If you place tea in your Coffee filter holder, it will not steep properly. Placing coffee in your Tea filter holder will result in your coffee going through the steeping process, and it will be brewed at incorrect temperatures.
Why are there two filter holders? Can I use the Coffee and Tea filter holders interchangeably?
Did this solve your problem? Yes NoGreat! We're happy to hear it.Please call Customer Care at 1-866-826-6941