Ninja OS401 the time is counting down slowly
Cause 1 of 2Hours were set instead of minutes. While you set the time, the display shows HH:MM and the time changes in minute increments. Source: Troubleshooting Guide: Why is the time counting down so slowly?, p. 22
First checkRead the time on the display as HH:MM and check that the set time is the one you intended.
Causes and checks
Hours were set instead of minutes. While you set the time, the display shows HH:MM and the time changes in minute increments. Source: Troubleshooting Guide: Why is the time counting down so slowly?, p. 22
- Read the time on the display as HH:MM and check that the set time is the one you intended.
A pressure cook time over 1 hour counts down by minutes only. Under 1 hour, the clock counts down by minutes and seconds. Source: Using the Cooking Functions with the Pressure Lid: Pressure Cook, note, p. 15
- Check whether the set cook time is longer than 1 hour.
All 2 causes checked. Contact SharkNinja Customer Service: 1-877-646-5288.
Service
If the checks above do not clear it, contact SharkNinja Customer Service: 1-877-646-5288, ninjakitchen.com/support. North America. Source: Troubleshooting Guide; Warranty, pp. 23, 25
Other OS401 problems
- The unit takes a long time to come to pressure3 causes in the manual. First: the time to build pressure varies with the selected temperature, the current temperature of the cooking pot, and the temperature and quantity of the ingredients.
- The pressure lid will not come off2 causes in the manual. First: the unit is not completely depressurized. As a safety feature, the pressure lid will not unlock until it is.
- The unit is hissing and not reaching pressure2 causes in the manual. First: the pressure release valve is not in the SEAL position.
- The unit takes a long time to depressurizeThe release time depends on the quantity of food in the unit and varies from recipe to recipe.
Sources
- OS401 Owner's Guide: Foodi 10-in-1 8-QT XL Pressure Cooker. SharkNinja Operating LLC. Document OS401_IB, revision MP_REV_Mv12, 25 pages, en. ninjakitchen.com. Listed on the manufacturer's support page. Retrieved 13 November 2026.
Page numbers are the numbers printed in the manual. Where this page and the manual differ, follow the manual.