Which model?1 ton or 1.5?
I also have 1 ton 12CITH2 installed on 1st floor,room's one side walls & roof are exposed to direct sunlight,walls are very hot when I touch them.i can't get such readings as yours in 1-2 hours plus when AC turns OFF due to load shedding cooling ends in 5-10 minutes due to heat of walls,roof.
My experience readings depends upon location of AC,different readings on ground floor & upper floors,different readings if room is exposed to sunlight or not,Humidity factor etc
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