I have installed a second 5501-433 Keypad on a security system. When I enrole the pad it works for about 2 mintues then seems to fail. No key works and only the time is displayed. I have installed one several weeks ago and it failed. I purchased another keypad and installed it on a different DSC
832 board. The new keypad did the same thing as the original pad. Anyone have any idea what I may be doing wrong. I have checked to make sure that the wiring is correct. I have a LED pad installed with the 5501 and it works fine.Thanks, Billy Correll