Master-Bilt has announced patent approval for its reverse-cycle process. The proprietary technology involves a reverse-cycle valve that is added to the condensing unit which reverses the direction of refrigerant flow during defrosts. The reverse cycle is automatically activated by the Master Controller electronic control system, saving the user energy, according to the company.
When the demand defrost feature determines defrost is necessary, the reverse-cycle valve is automatically activated and the high temperature refrigerant flow is reversed through a multistep process. Once triggered, the refrigerant flows back through the evaporator coil, heating it along its entire length and eliminating frost buildup, said the company.