My brother has the 80 litre dual zone waeco.

He was at my house the other day when we had that hot 38 degree day and he had it set at -10 which "In his words" holds the beer temp in the fridge department perfectly.

Long story short it could only get to -3 with the fridge in the shade under the carport. When the sun set it came back up.

I know in my 60 litre I can set it to whatever and whenever and it will easily reach desired temp.

Is this is a regular problem with the larger fridges struggling on hot days or is something wrong with it?

Never had this problem with my 60 and had it inside locked up in the gq on similar days with no issue, even set at -10.

Larger area to cool and can't handle it or?