A bit of a story, but trying to provide full background info.
My Veritas 8 system has performed well since it was installed new about 5 years ago. It was then 'upset' by a power cut a few months ago. I replaced the main battery, and all seemed fine for a while until it was 'upset' again by another power cut. My attempts to reset it again left me with a flashing 'set' light but it functioned well in all other respects for a while until it started to chime every minute. This served to nag me into fitting a new sounder battery. However, the flashing/chiming symptoms remained. I discovered that although no zones were set to chime I could silence the chiming issue by one simple press of the chime button on the remote keypad - but it would revert to chiming again each time the system was 'unset'.
Yesterday I removed power, disconnected the system battery, returned power, reconnected the battery (in that order, because I had read that on a forum). The periodic chiming (at one minute intervals) had ceased but I was left with the flashing set light which I believe indicates a battery/charging issue.
THEN, reading through the manual again I saw that it said at 3.7:
Power should always be connected in the following order:
Connect the red battery lead to the positive terminal of the battery and then connect the black battery lead to the negative terminal.
Connect the AC mains.
So I did exactly that. And I am back to flashing and chiming. I notice too that the power LED on the main panel is flashing, (the panel is above door height in a cupboard, so hard to see) but there has to be power or the battery would have gone flat ages ago - and anyway, nothing would work, would it? If fuse F5 has gone, (I haven't checked it) could the panel still function and maintain charge?
There has to be a simple solution to this. Do I need to try reverting to factory default settings? I think the default engineer and boss codes are unchanged, but is there a simple way to check that without changing anything?