We may have found other answers which could help you.
Success
Message
Key pad 9827 with control panel 9800 suddenly went off showing bF?
Replacement parts?
How to silent set my alarm at night?
how to get my security system back up ?
Alarm goes off when electricity gives off?
replacing new batttery in 9450 alarm system ?
which is the enter key?
Missing battery/system reset?
"aux dc fail " ?
Keeps going off,,,when NOT set?
Reset alarm without knowing code?