Thanks Curly for your speedy response and your time...
It is not a new AC we have had it since moving in 10+ old...hubby away atm so unable to answer 'what sort of system is it'? -
It runs for a while particularly first thing in the morning for about 3 hours then once it gets hotter in then 'trips'....I go outside to re activate it and then within 20m it begins again.....
As I mentioned it is a 'New Box' outside so whether it is more of an 'electrical' fault or something with my AC...?
BTW it is all on a separate circuit -
I really appreciate you answering my questions!!
Cheers