you may not be able to isolate that sensor only ,you will have to omit the whole zone,eg zone 1 downstairs ,zone 2 upstairs etc .find out which zone its on and omit that zone , just remember that there won't be any intruder protection..try slipping some aluminum foil between the contacs.also trace wire back from magnetic switch to user box and inspect wire for damage especially if it runs under floofing.press omit ,enter zone eg 1 press enter.
killerdanny, October 2011