What can trigger a carbon monoxide alarm?
What can trigger a carbon monoxide alarm?

What to do if carbon monoxide detector goes off and then stops?

Call 911 immediately and report that the alarm has gone off. Do not assume it is safe to reenter the home when the alarm stops. When you open windows and doors, it helps diminish the amount of carbon monoxide in the air, but the source may still be producing the gas.

How do you know if carbon monoxide is false alarm?

Possible false alarm causes Fossil fuel-burning appliances may not be burning fuel completely. Check pilot lights/flames for blue color. Appearance of yellow or orange flames indicates incomplete combustion—a source of carbon monoxide.