Patent ID: 9404287
Filing Date: 2016-08-02
CPC Classification: A47L,D06F,E05B,F24C

Claim Text:
1. A control system for an appliance, the control system comprising: a door lock latch movable between a locked position and an unlocked position, the door lock latch configured to prevent opening of an appliance door when in the locked position; a latch motor configured to drive the door lock latch between the locked position and the unlocked position; a motor feedback associated with at least one motor switch providing a signal indicative of a state of the latch motor; a door switch coupled in series with the motor feedback; and a controller which detects a change in an output signal from the door switch coupled in series with the motor feedback, determines whether the change in the output signal was caused by the motor feedback associated with the at least one motor switch or the door switch coupled in series with the motor feedback based at least in part on at least one latch command associated with the latch motor, and determines a state of the appliance door based at least in part on whether the change in the output signal was caused by the motor feedback or the door switch.