All categories
Smoke alarms
Chirping, false alarms, and interconnect faults.
Smoke alarms
Smoke alarm chirping / beeping intermittently
A smoke alarm chirps every minute or so — the classic low-battery or end-of-life signal, but can also be dust or a backup-battery issue on mains alarms.
4 causes2 test steps
ApprenticeMedium risk
Smoke alarms
Smoke alarm going off for no reason (false alarms)
A smoke alarm sounds with no fire — often from cooking/steam, dust/insects, location, or an aging alarm. Must be resolved without disabling the alarm.
4 causes2 test steps
ApprenticeMedium risk
Smoke alarms
Interconnected smoke alarms all sounding / not interconnecting
Interconnected alarms all sound when one triggers (by design), but you need to find which one, or they aren't interconnecting when they should — a wiring/wireless link issue.
4 causes2 test steps
QualifiedMedium risk
Smoke alarms
Mains (hardwired) smoke alarm not working / no light
A hardwired smoke alarm's power indicator is off or it isn't functioning — points at the alarm's supply (often a lighting circuit), the alarm itself, or end of life.
4 causes2 test steps
QualifiedHigh risk