Came home tonight to no AC. Have a heat pump/AC unit outside, it is running but fans in basement unit are not turning on. Went downstairs and found the refridgerant line from the outside unit to basement unit is frozen solid. It is an old unit, over 20 years old.
As you can probably guess I am clueless on these things. Currently have it turned off but any ideas what it might be? Anything I can do?