Encoder position detection using led driver fault detection

A method for controlling an appliance, comprising:

• providing an appliance having
• a cabinet, the cabinet comprising a user interface panel, the user interface panel comprising a display and an input selector,
• an operational component configured to perform a cycle,
• a controller communicatively coupled to the operational component, and
• a matrix driver operably coupled to the input selector and communicatively coupled to the controller,
• receiving a user input at the input selector for operating the operational component;
• and
• using the matrix driver to detect a rotational position of the input selector corresponding with a cycle selected by the user input, and to output to the controller a signal corresponding to the user input.

A laundry appliance, comprising:

• a cabinet, the cabinet comprising a user interface panel, the user interface panel comprising a display and an input selector;
• an operational component configured to perform a cycle;
• a controller communicatively coupled to the operational component, the controller configured to receive a user input for operating the operational component;
• and
• an LED matrix driver operably coupled to the input selector and communicatively coupled to the controller, and configured to receive a user input for operating the operational component and to provide to the controller a signal corresponding to the user input;
• wherein the input selector is configured to assume a rotational position based on the user input, and includes a position encoder with selected pins configured to output open or short fault detection voltages on the selected pins depending on the rotational position based on the user input;
• and
• the LED matrix driver is configured to read voltages on the selected pins of the position encoder to detect respective open or short conditions, and to output a grey code based on the detected conditions, which grey code indicates a unique rotational position corresponding with a selected cycle to be performed.