[turbo6bar]

Don't see how reversing the two 115V hots will cause the fan to reverse direction, but there's a first time for everything, I suppose.

As jhc states, you want the air pulled up through the condenser and out the top. Causes for a freezing evaporator and suction line (large pipe) include insufficient airflow across the evaporator (heat exchanger above your heating unit), dirty air filter, bad blower motor (beneath your heating unit), and low freon charge.

It sounds like you have a closet unit, and the evaporator coils can get extremely dirty without regular filter changes. If this is the case, you will need to have the system pulled down and have the evaporator pulled and cleaned. Check your filter. Otherwise, I would expect the system to be undercharged.

The stove and A/C condenser really do need to be on separate circuits.