Seen this happen loads, usually down to a power problem or floating zero. Only once or twice I've had to resort to replacing STUs for missfiring, it nearly always turns out to be something simple.

dont suppose the gals outputs are inverted are they.

Unsure on a 2, but on a rio if it looses comms it will put the outputs to 'normal state' and not respect the programming from the panel (the rio isnt that bright)

SO if your panel powers down or restarts all channels would fire.

Nothing at all in the logs? and was the clock accurate.

Any other pins wired in?

Could anyone please explain how these redcare diallers work in regards to the pins? do they operate like normally open/closed contacts or do they operate when vltage applied. Having problem with one, fire signal on pin 1 wont restore,fire panel is reset, got monitoring station to poll it, didnt work, noticed continunity between pin 1 and 0 volts?? any help would be appreciated havent worked on these before.

Applied and removed 12v/(24v if a 24v stu) to the pin

Voltage.

Neg applied or Removed, you can invert on the Gals. Not the best idea though as you have just seen.

ok so a voltage applied activates pin and when removed pin should restore?

Or visa versa.

But yes.

thanks

normally on a insurance spec they used to give a min height of the bell of 3m

rather than security it was to deter Alterego from gobbing on your sounder

lol

I would guess the channel is not programmed for restore ?

A simple job to change if you have a 7300