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CO dector went off then stopped


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If this carbon monoxide alarm is a Fireangel CO9D alarm with digital display, it records peak carbon monoxide (also shortened to 'CO') levels which can be queried by pressing the Test button. It displays the highest recording and then resets itself. Your alarm is telling you that it recorded 227ppm which is high.

I would avoid using the gas dryer until you have found out whether it is leaking any CO gas into the building.


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