Automatic water level controller

The utility model discloses an automatic water level controller which pertains to an automatic liquid level controlling device, and comprises a relay. The relay is connected with a normally open contact I and a normally open contact II in series; a normally closed switch I of the relay is connected with a power supply and a motor in series; the normally open contact I is connected with a low liquid level probe in series; the normally open contact II is connected with a high liquid level probe in series; and the normally open contact II is connected with a normally closed switch II and a water tank case in series. As for the automatic water level controller, the normally open contact II is connected with the high liquid level probe, and simultaneously connected with the normally closed switch II and the water tank case, thus guaranteeing that the water tank can not be dried up when in working, and prolonging the service life of the motor, and leading operation to be reliable.