I am neither an electrician nor an installer but would be grateful for help and advice with a Texecom “Premier” system that was professionally installed in July 2013 and has had annual maintenance ever since. The problem arose about 6 months ago when although being armed before leaving the house, we would then return home and on opening the front doors, the internal sounder would emit a warning tone and a fault message would appear on the keypad to the effect than an area was not fully armed. I then have to go through a series of key presses to clear the fault, all of which is beyond my wife and that of the cleaner, who enters the house in our absence. The problem is compounded by the fact that we have a door into the lobby before reaching the outside door, and hence on leaving the house we cannot hear if the alarm has armed or not; I know that an external sounder could be fitted, but that still leaves the question of why doesn’t the system sometimes fully arm as it should and why has it taken 6 years before coming up with this fault. Our alarm engineer has tried to rectify the fault on 3 recent visits and on the last visit fitted a new sensor on the external door, which has still not cleared the fault. I would be grateful for any suggestions that might remedy this fault as at the moment we are left with a system that does not give the protection that it should. Finally, I have noticed that when arming the system, either one of the following messages is displayed “Area in Exit A” or “Zone 10 Active”.