Hi we just installed a brand new daikin heat pump of 11kw which is doing only underfloor heating only the system was on gas before which is 12 years old the new client who has brought the house has never used it, we have flush the old water out and a cleaner and added new water also have no leaks we got all the air out pressure on bar is 2,5 bar the running temperature is 45 degrees all the mainfolds are heating up and pipes to each room this runs for 3 to 4 hours then cuts of with water flow on the display can any one help