Hi All....

Our H2, A/C blows cold in the morning 38 Degs,max air 4 (hi) then in the afternoon when its 95 Degs,it cools to 60s,at max air,at speed 3 then cools to the 45s and does not want to cool any further.......the A/C Comp is going off/on ........goes up to the 55-60 degs and comp. comes back on and cools down to 45,shuts off comp till it goes up an comes on again......

Everything has been tested,full of Freon,low Freon sensor replaced,orfice tube replaced.....comp meets all pressure/suction tests,no obc alarms....

The A/C shop I took It too, is Stumped on whats wrong...

I called Hummer, they said they don't know,but will be happy to look at it and see what they can find wrong......(I bet,lol)

Suggestions........Thanks

South Florida
2004/H2
2006/H3

 

At 95f max air temp discharge depending on humidity is 72 to 79f, in the morning when ambient temp is lower it will cool more. if your discharge temp is lower than 72f when its 95f outside system is within spec

 

as outside air temp rises, ac system max cool temp also rises