... Operating environment: temperature -20°C~50°C, humidity≤85%4,Relay contact capability: 8A/250VAC (pure resistive load)5,Temperature ... accumulative running time is over probation time, and the controller can not work.3,The temperature of the evaporator ... sensor displayWhen displaying current temperature, press “6” key, the controller will display evaporator temperature. Loose “6” key, then return ...