Takes advantage of electronic expansion valve to precisely Manage the movement of R290 refrigerant in to the evaporator as well as a four-way valve to divert the refrigerant circulation to the defrost Procedure Working with electric power, the pump compresses the liquid to extend its temperature. It then condenses back https://tornadosocial.com/story6064145/5-simple-techniques-for-r290-propane-heat-pump