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  • 01/06/2025
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Ninja Slushi (FS300/FS301) flashing upward lights and beeping every minute?
That means your mix has too much sugar or alcohol to freeze — a common issue with syrups, juices, or cocktails.

This video shows how to fix it by diluting your drink and restarting the cycle.

📌 Applies to: Ninja Slushi FS300 / FS301
📌 Ninja Support: https://support.ninjakitchen.com/hc/en-us

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Transcript
00:00Ninja slushy beeping with upward flashing lights?
00:03Here's what it means.
00:05If your ninja slushy beeps once every minute and the temperature lights flash upward in
00:09a spiral, your drink won't freeze.
00:11And here's why.
00:13This is the machine's high sugar or high alcohol alert.
00:17It means your mix is too rich to freeze properly.
00:19Here's how to fix it.
00:21Step 1.
00:22Check what you added to the mix.
00:24Cocktail mixers, syrup concentrates, sugary juices, or alcohol can push sugar and alcohol
00:29levels too high.
00:30Even juice blends with added sweeteners can cause this problem.
00:34Step 2.
00:35Dilute the mix before trying again.
00:37Add 60 to 120 ml of cold water, sparkling water, or another low-sugar liquid.
00:43Then stir or shake well to reduce the sugar or alcohol concentration evenly.
00:48Step 3.
00:49Reset and restart the cycle.
00:51Press the preset button once to cancel the alert.
00:54Then press it again to start a fresh cycle.
00:56If the mix was diluted enough, the machine should begin freezing normally.
01:00If the alert comes back, dilute a bit more next time, or use a different mix with lower
01:05sugar content.
01:06Subscribe to NoFillerFixes for clear, tested appliance tips.
01:11And if you want consistent results, we've linked a measuring cup set in the description
01:15to help adjust your mix every time.

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