Refrigerators and freezers; air-conditioned wine cabinets, comprising of refrigerated cabinets containing racks for wine bottles and storage shelves; refrigerating cabinets for beverages, in particular beer; heating and ventilating apparatus, namely, air conditioners for industrial purposes; cooling devices and installations, namely, de-icing systems comprising of anti-icing valve, outflow valve, overheat sensor, reheater, pressure sensor, pressure switch, duct overheat sensor, air humidifica...