Sounds like the rechargeable battery has gone caput, test the battery and replace if needed. There is a battery in the unit and in the bell box? which may have gone? Failing this get the installer to look at it their number should be affixed to the bell box and inside the drop down panel to your key pad. All the best and Merry Christmas.-
Steven Howard
December 2008
howtomendit.com for free repair help, information and advice.
