How are these supposed to work? When it's 90's outside it cranks up the wattage and cools well, 73 degrees When it's 80 it lowers the wattage and it doesn't. 76 degrees. Settings mean nothing. This is a Midea window mini split. I have another coming today for my bedroom, but I'm afraid it wont cool during a 77 degree Florida summer night. I will say it does a great job at lowering the humidity.Thanks in advance.