Smoke Alarm help

[brucyboy]

I fit hundreds of aico alarms. If its a short beep every 5 mins its a low battery. If its going off randomly then it's gone faulty. Does happen but not very often. They are good units. If the indicator lights are round then it's optical (the better one) if they are oblong then it's ionisation
Also check the replacement date on the sticker on the main unit.

 

[RyanCheetham]

Yeah nothing else has changed on the circuit. Trying without the flouro cant hurt. I am still fairly sure it needs changing