c-tec addressable fire panel

[Guest alarm eng]

Bean called out to one wich keeps showing a pre-alarm on two detectors in two diffrent parts of the building and now one keep going in to fire had to disable the two detectors tryed new detectors no look any idears

[Eamonn]

Try looking at an earth fault. If you get the Positive side going down to earth this will cause problems.

[Guest alarm eng]

looked in to that no look

[Guest ALARMO]

what detectors is the panel useing