Hi All,
I have a garage with a Cooper Scantronic 9651 unit and two Pyronix Deltabell box's mounted on each end of the garage along with two control panels. It is all hardwired and was installed 10-12 years ago and has worked perfectly until recently.
One Tuesday afternoon one of the Deltabells went off i.e. Strobe and Bell, I tried to reset it via the control panel but the panel was showing no alarm of any sort and would not stop the bell sounding. Finally after 15mins the bell stopped but the strobe continued. The strobe continued until the following Saturday when it reverted back to alternating LED's. The next day Sunday the bell box went off again for another 15min spell and again no alarms or logs in the control unit.
Both bell box's are wired in parallel so I am certain it is not being triggered by the control unit?
Any ideas on the cause or other actions please? I have both a user code and engineers code for the system.
At the moment I have disconnected the bell within the box but whilst in the box I could see nothing obviously wrong i.e. it was reasonably clean, dry and still firmly attached to the wall. The fault has not re-occurred as yet.
I am planning to replace the bell box as a precaution unless anyone else has any other suggestions?
Thanks in advance,