Tks for the help but the problem now is not in some instance running. I formatted the sd card twice (in Mac and Windows erasing data) and installed again Ubuntu Mate but before installing (while my raspberry pi 3 has just turning on) the trigger started again!!! So, I can see that is nothing related ...

Using "top" command I didn´t see any other domoticz instance running. Is there another way to check it?

I have an event that should trigger after 20:00 and it was working well when I noticed some days after it started running also in the mornings. I checked the blocky event and it was ok. To be sure what was going on I deleted the event but I realized the trigger was still working, without event. I ...