How can I fix an EF fault (exit fault)?

Have tried pushing various keys to fix above fault but to no avail.

The alarm now goes on when I am exiting hose with the usual beeping noise. Unfortunately it is not staying on as when I re-enter house there is no alarm.

Advice requested on resetting Scantronic 9800+.

Thank you.
Marjory, November 2016


done
door contact jammed on ,replace it

gts, November 2016
link Click here to see other fixes for Scantronic 9800.