Recent content by JerseyHarold

Some manufacturers claim that their systems work to about 20 degrees, but the colder you get the more the efficiency drops off. I wouldn't use one below about 28 degrees.

If the system starts and runs first thing in the AM and then blows the breaker on re-start, the refrigerant pressures aren't equalizing fast enough. You may have a stuck TXV on the evaporator coil.

If both compressor and condenser fan are not running, I would check for power to the outdoor unit first, and then see if the contactor is closed, since many units power up both the compressor and fan at the same time via the contactor. If the contactor isn't closed, I'd check the outdoor unit...