hi steve you can reset the alarm to facrory set but first you will need a peice of wire about 12 inches long a peice of tellephone or alarm wire well do first turn the power off and remove the cover and remove the battery then locate the SET on the control board and fit one end of the wire to it and take the other end and fit it to the P on the PA if it has a link wire in remove it for now or if it has wires in remove the wire from the P and connect the wire to it now refit the battery and you canthen remove the wire and refit the origanal wires in the PA and put the cover on now the alarm should work on 0123 if it doese then you might have to re program it to your reqirements i have the manual if you have not got one or you can download one from the honneywell web site good luck baz26
baz26, February 2010