hello all , just had a look at a big hitachi utopig g7 ducted unit using r404a gass,cust reported not cooling, our door temp approx 30 deg , suction 445kpa , liq 1670kpa.

unit was not cooling at all when arived, i made a boo boo checking voltages on control board on 12v reg ( i shorted to ground and reset unit), when unit came back on seamed to be cooling a bit ,( as per above readings).
but just not got the grunt behind it. as though it is set on low speed ( fans inside to vary with selected speed on controler), water draing on inside unit (went in roof and seen).

used inside a 15 meter by 15 meter shop for butcher/takeaway shop windows down one side and door open.

any idears why this unit not preforming ?