Press prog
enter code or vice versa,it's been I while since I've touched one,
press 9
press 1 (zone number)
press reset
When you've pressed 9 the zone lit is the zone in chime,so press the corresponding numbered button to toggle the chime off.
Have you thought about upgrading to something better?,
I don't want to appear rude but it's a load of rubbish,sorry had to say.
e manno, February 2013