How does a tech know the a/c compressor he or she is diagnosing is actually failed and that the problem is not a crankcase heater, condenser fan, or rubbed out wire? According to the contractors The ...

Acceptable ohm reading for a good current relay. One type of starting relay used on fractional-horsepower compressors is the current relay. This type of starting relay uses the initial high inrush ...

Article 440 applies to electrically driven air-conditioning (A/C) and refrigeration equipment. Each equipment manufacturer has the compressor motor built to its own specifications. The motors are ...