Hello: Can you kindly advise if there is a known problem with this alarm (batch: 17110-17326J). Supplied/fitted by a Brigade c one year ago, it's intermittently sounding full alarm (replace end Jul 2028), with no evidence of smoke and no other smoke/carbon monoxide alarms in the house sounding (inc another identical model - two were supplied). After the first false alarm it has been vacuumed of dust but is still sounding intermittently. This is NOT the low battery signal.
Have asked FireAngel for replacement.