Toilet and method of operation

A flush valve assembly for a toilet, the flush valve assembly comprising:

• an electrically-operated flush valve for opening and closing a passage to a waste receiving area;
• a controller communicating with a water inlet valve and the flush valve, the controller opening and closing the water inlet valve and controlling a position of the flush valve in accordance with a position of a flush actuating mechanism;
• wherein the flush valve is displaceable between a sealed position and a full open position, and wherein the controller controls the position of the flush valve through a programmed cycle from the sealed position to the full open position and back to the sealed position in accordance with a signal from the flush actuating mechanism;
• wherein the flush valve comprises an open limit switch that detects when the flush valve is in the full open position and a closed limit switch that detects when the flush valve is in the sealed position;
• and
• wherein the flush valve is mounted on a valve shaft, and wherein the flush valve further comprises a first cam lobe that engages the open limit switch when the flush valve is in the full open position and a second cam lobe that engages the closed limit switch when the flush valve is in the sealed position.

A flush valve assembly for a toilet, the flush valve assembly comprising:

• an electrically-operated flush valve for opening and closing a passage to a waste receiving area;
• a controller communicating with a water inlet valve and the flush valve, the controller opening and closing the water inlet valve and controlling a position of the flush valve in accordance with a position of a flush actuating mechanism;
• wherein the flush valve is displaceable between a sealed position and a full open position, and wherein the controller controls the position of the flush valve through a programmed cycle from the sealed position to the full open position and back to the sealed position in accordance with a signal from the flush actuating mechanism;
• wherein the programmed cycle carried out by the controller opens the flush valve for a predetermined period of time during a flush cycle;
• and
• wherein the programmed cycle carried out by the controller begins opening the flush valve for a first predetermined period of time, then stops opening the flush valve for a second predetermined period of time, then continues opening until the flush valve reaches the full open position.

A toilet comprising:

• a bowl;
• a flush valve that opens and closes a passage from the bowl to a waste receiving area;
• a water level switch having a first state and a second state;
• a water inlet valve connected to admit water into the bowl;
• flush controller connected to operate the flush valve and the water inlet valve, wherein at least one of the water inlet valve and the flush valve are controlled to a fill the bowl to a first water level when the water level switch is in the first state and at least one of the water inlet valve and the flush valve are controlled to fill the bowl to a second water level when the water level switch is in the second state.

A method of operating a toilet comprising the steps of:

• detecting a state of a water level switch having at least two states;
• operating at least one of the flush valve and the water inlet valve to fill the bowl to a first water level when the water level switch is in a first one of the states;
• and
• operating at least one of the flush valve and the water inlet valve to fill the bowl to a second water level when the water level switch is in a second one of the states.