| 摘要 |
t is disclosed herein an electronic control device regulating by means of a water level sensor the freezing and preservation function of refrigerators. During defrosting, the ice melts, the water drains into a container controlled by the water level sensor, while a resistance is actuated for the water evaporation so that no drainage of water is needed. The 230 V voltage relay constantly supplies with power the heating system at the door's elastics. When the device cuts off the operation of therefrigerator-freezer, the voltage supplied for the heating of the door's elastics is, simultaneously, interrupted. The refrigerator-freezer has, additionally, the defrosting resistance relay, the fan relay, and the second heating element. |
