I have a 2 year old house with Firex hard wired 120v smoke detectors
that have a 9v battery for backup. My problem is that the detectors only
work individually. I was told by the fire inspector that when any individual
detector is tripped, all the others should beep simultaneously. I checked
the wiring and everything appears correct. The interconnect wire is wired to
all the detectors. I changed all the batteries. Then I removed some of the
detectors and actually wired them together on the floor and I still can't
get them all to beep. I tried all different combinations and no two
detectors will beep together.
The house passed the initial smoke detector inspection with no problems.
Is it possible that all my smoke detectors have gone bad possibly from
lightning or a power surge? I don't know what else it could be.
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