Fault-finding 🇮🇪 Ireland
Why is my smoke alarm chirping?
Here are the usual causes, most likely first, and how an electrician would track it down.
Likely causes
- Low or failed backup battery
- Alarm past its 10-year life
- Dust/insects in the chamber
- Interconnect fault
How you'd find it
- Check the date on the back of the alarm
- Replace battery and reset (hold test button)
- Check mains is present at the base
Usual fix
Replace the battery, clean the alarm, or replace the alarm if it's over 10 years old (like-for-like for interconnect).
⚠️ Safety: Stop and safely isolate before touching anything. If you're not qualified, leave it to a Safe Electric Registered Electrical Contractor.
Regulation: I.S. 3218; TGD B.
Study aid in plain English, not the text of the standard. Always check the current I.S. 10101 and your local rules. Electrical work must be done by a licensed or registered electrician.
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