This is kind of an odd one. Recently, my alarms have been going off. It started a couple weeks ago where my neighbor said the carbon monoxide alarm was going off for 10-15 minutes then stopped. Last Saturday, it seemed like only one of the carbon monoxide alarms was going off, so I changed the battery and everything was fine. Last night, everything started going off, carbon monoxide and fire alarms. I unplugged all the carbon monoxide alarms in the house ( excluding the one in the basement above the boiler ).
I checked the manufacture date, January 2015. They were probably installed by the fire department when I bought the house last year.
How can I debug this? I was planning on trying to clean them and change all the batteries. I can't imagine they need to be replaced they're still too new.