Cheers, doin my head in that, tested every single point on every single zone to try and clear it... Last engineers buggered off with engineers manual and it says NOTHING at all about how to deactivate that light anywhere in the user manual. Many thanks.
Access code: 8737. It's written in guidelines of Fike on the internet. Jesus Christ, it happened yesterday and it was ringing for 15 mins straight cuz we didn't know the access code