A carbon monoxide detector false alarm should not occur if your alarm is in working order. Remember, CO is an odorless, colorless gas. If your carbon monoxide alarm went off, it detected potentially harmful amounts of CO. After the professionals have evaluated the situation, make sure no one has any symptoms of CO poisoning. Here are a few situations that may cause a carbon monoxide detector "false alarm:"
• The CO alarm needs to be relocated. Carbon monoxide alarms should be located 15-20 feet away from all fossil fuel burning sources like furnaces and stoves. Alarms should be located 10 feet away from sources of humidity like showers.
• 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.