Troubleshooting your coffee warmer

My coffee warmer is stuck in Fahrenheit/Celsius.

To change temperature units, press and hold the up arrow and down arrow simultaneously for 3 seconds. The unit will change from °F to °C. Repeat to switch back.

My coffee warmer only shows a red power button.

This means the unit has power and is in standby mode. To turn it on, tap the red power button. For pressure-activated models, it must be weighed down by at least 10.4 ounces.

If you still have additional questions, please email us at support@cosori.com or call 1-888-402-1684. Our phone line is open Monday - Friday, 9:00 AM - 5:00 PM (PST). For the quickest assistance, please have your model number ready and provide a brief description of your experience.