What's on Zone 11?
At this point it sounds like it may be a good idea to leave it in Installer Mode until the engineer comes out lol
Sounds like there are alot of faults on the system.
You could try looking in the log (key in 90 and tick from the "Installer Mode" banner. 1 will scroll backwards in time, 3 will scroll forwards, X will exit the log) and find out what's happened that way.
At this point it sounds like it may be a good idea to leave it in Installer Mode until the engineer comes out lol
Sounds like there are alot of faults on the system.
You could try looking in the log (key in 90 and tick from the "Installer Mode" banner. 1 will scroll backwards in time, 3 will scroll forwards, X will exit the log) and find out what's happened that way.