Can someone assist please have gen 4 system installed manual says if engineer has set up I can use programme 1 ,2, or 3. When I press. My code then p the key tones are supposed to silence then i can chose which programe , only programme 1 appears. Sand key tones do not silence when I press 2 for programme 2 nothing happens, the manual says if engineer has set up. I have engineers annual and canst see where to set thisnup