andytpickering

thanks, i'll check it again this weekend and hopefully i'll discover something!

checked for corrosion and there doesn't appear to be any. it's more of a summer house than a shed so it is fully insulated and heated as it get used a few times a week. what I can't understand is why it happened just when I entered the code, if there had been some kind if break in the PA circuit I could have happened at anytime whilst it was set.

been through them all again today, but no joy. the system has worked flawlessly for the last couple of years so I can't figure out what could have happened.

Having searched numerous forum posts I'm at a total loss, so I thought I'd try asking... I have a Honeywell Optima Alarm system (8EP396A panel with a 8EP417A LCD Keypad and a single PIR sensor) for my shed. When I entered this morning and entered the code the alarm sounded but every time I entered the correct code the alarm would briefly stop and then sound again. the only way I found to stop it is power it down and remove the battery. I only have about a second to see the fault, which is coming up as a PA fault. but the PA connection on the panel has a link cable closing the system (I assume this means it's not in use?) I've tried doing a reset of the system, but nothing seems to work. As soon as I power it back up the alarm sounds again Any help would be greatly apreciated