I have to go look at a smoke detector that chirps and the customer said he already replaced the battery. (there may be more than one, not sure yet). I have seen this before in a house that had several SD tied together, and if I remember right, that one had a connection problem. Has anyone had them chirp when the power was ok and the Battery had been replaced?
The Golden Rule - "The man with the gold makes the rule"
i run across this frequently...just this last week as a matter of fact...this is a low battery warning..replace with a good battery..if that doesnt work, check wiring, replace detector..if that doesnt work..
We had a problem with the Red interconnect wire on one of the smokes. It wsa knicked and was touching ground. It was enough to make the smoke det. chirp. We cleared the ground, replaced the detector, and things were fine. I think the Red wire actually carries a low voltage signal to the others. Good luck.
Run in to this all the time, either batt. bad connection or if there are more then one on the system and they are not all the same brand that will do it. For exp i install brk smokes all the time if you have one first alert in the system somewhere it will churp. check them all look every where attic's crawl included you'd be surprised where peiple put them. good luck
Check all conections. I hate firex ones you have to unplug it to change the battery, and So i turned off the CB and unplugged in the whole thing comes down (Cheap rental apt) when I got it back up with a new battery turned back on the CB and it would not shut it, so I take it down and come to find out the neutral wire came out of the wire nut. So I fix it with the propper size wire nut and its fine
Theres always enough room in the junction box.You just need a bigger hammer