Risco Lightsys 2 keeps triggering every morning

[gooyster]

I have a Lightsys 2 installed and it has been working fine for a few years. Two weeks ago it started triggering every morning around the same time (but not exactly it could be within 2-3 minutes different) at the same zone every time.

Eventually I have disconnected the sensors (volume sensors) but it still keeps triggering. any thoughts what could be the cause?

Thanks.

 

[telectrix]

what does it showon the event log?

 

[gooyster]

It shows:
06:19 Alarm - 'the name of the zone'

 

[telectrix]

possibly RF interference from central heating if you have wireless stat. does the alarm coincide with the c/h firing up in the morning?

edit: is the zone wireless or hard wired?

 

[gooyster]

Thanks for the response. No, I do not have anything firing up in the morning, and as I said, I disconnected all the sensors and still the alarm is triggered. I can bypass the zone, but I want to uncover the problem.

The sensors are wireless, but I have other wireless sensors in the house that are not causing any problem.