After I thawed out my heat pump - it sounded like a machine gun when it ran.....I turned it off....and when I looked this morning three of the four bolts that hold the fan and the fan motor to the grill on the top of the unit are GONE. I found two of them.....the technician is coming this afternoon to fix it....
I turned it off of course, and am using the fireplace and my space heaters to keep us warm.....