I found on another post that by entering 4321 the system might clear the error. Just tried putting in my own user code and the beeping has now stopped and the original display is back saying "Call alarm co. quote code 72146". I can live with this! At least it isn't making a noise any more...
I have an ADT alarm which is not monitored. There was a recent telecoms failure and a message with an error number came up telling me to contact the alarm receiving centre for a reset code. I can't do this. I tried putting in 4321 and now I have a display reading ALARM IS ACTIVE and a...