I'm at a loss and need help :(

Well...the temps are still in the 60's so needless to say something isn't right. I couldn't believe when I heard about flipping it upside down, but with all these people saying it might work i might have to give it a try.

Also read some stuff on the thermistor? Possibly could this be bad? Not sure what the signs might be, but strange it would go at the same time we had those super cold nights.