![]() ![]() Photoelectric smoke detectors are best at detecting the large particles typical of smoky, smoldering fires but poor at detecting fast, flaming fires. Ionization units are prone to false alarms from burnt food and steam, so don’t mount them near a kitchen or bathroom. ![]() But in our tests, all tested poorly for detecting smoky, smoldering fires. Ionization smoke detectors are best at detecting the small particles typical of fast, flaming fires. You’ll find three types of smoke detectors on the market, but only one is effective against both types of fire. In most cases, you will have to replace the detector.Fires burn differently: Some flare, some smolder. If the error comes back, verify that there is not any carbon monoxide in your home, and then contact the manufacturer of the device for additional assistance. If you are sure that there's isn't a dangerous buildup of carbon monoxide present, try cleaning the inside of the detector with canned air or a vacuum. These apps sometimes allow you to view error messages, which can help narrow down the problem. Smart carbon monoxide detectors typically include a connected app that you can install on your smartphone. Carbon monoxide detector manufacturers require you to contact them with your error code to receive more information. You can usually retrieve error codes by pressing the test or peak level button, but you can't do much with one of these codes on your own. Some units will perform a double chirp every 30 seconds instead of a single chirp. Some units have an LED that lights up if an error is detected, and others have a display that will show a message like ERR or ERROR. When a carbon monoxide detector malfunctions, it may provide an error indication or message. Consult your owner's manual or contact the manufacturer for more information. Some carbon monoxide detectors include a battery light that will turn yellow or red when the battery is weak. ![]()
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