A man came with a universal remote control. 
The AC in one of the rooms would not work.
He clambered on to a stool and pointed the remote at the air conditioner. It did not come on.
He pressed the button again and again. And then,some more.The air conditioner remained off. 
With a furrowed brow, he opened up the control panel and jiggled around with some switches.Then he pointed the remote yet again.It did not come on.
Forty-five minutes later, the man kept jabbing at the remote con...