See Doug L.'s response below. It's probably F=any trouble...like AC fail too.
| >> So would that me mean the foil is tired? I have to see if they have any | >> foil installed | >
| > Day trouble or day zone feature is a feature that monitors a zone for | > trouble when the system is in the disarmed mode. Usually used in | > commercial | > applications so that if there is a trouble, the store owner gets a | > notification, locally, through central station or both, of the trouble | > prior to trying to arm the system at closing time. The reason for the foil | > mention is that it is a common application in older commercial locations | > and | > is easily damaged, either intentionally or unintentionally. Gives the | > owner | > a chance to get it fixed prior to closing. | >>
| Thanks for the reply back...it is a residence and the only thing I know for | sure is there are frequent power outages, it area.. I understand the foil | suggestion but I asked and they don't have it. for now I had them replace | the battery since it was tired anyway and we will see how it goes, if they | continue to have problems I will go out an meter each zone. | | |