thanks hopefully thats what it is, installer is coming back in a few hours to look at it which is awesome!

but my 1hp units are still working 3 times better than this one so hopefully your right.

Also it is MY mistake about the breaker - they have connected one up but its a 20amp (one from the 2.5hp splits just taken out) & ive been told it should be a 40amp.

so my mistake there, but seems its too small?

thanks

edit: apparently 20 is ok for these daikins.