Central air conditioning units question
(Waterford, MI, USA)
I have a Ducane central air conditioner unit. When it was installed the unit would blow air out the top. The last 2 summers, it now "sucks" air in and blows it downward (ie the cooling fan on the unit has somehow reversed itself).
I have not done anything to it. I don't even pull the safety fuses in the winter. I leave them in. Should I be concerned with this? Is this "normal" operation? Any help would be appreciated!!