Patent ID: 11905643
Assignee: HAIER US APPLIANCE SOLUTIONS, INC.
Field: Other consumer goods (Other fields)
Classification: CPC D | IPC D

Claim 12:
13. A method for operating a washing machine appliance, the washing machine appliance comprising a sump positioned at a bottom of a wash tub for collecting wash fluid, a drain pump assembly in fluid communication with the sump for selectively draining the wash fluid collected within the sump, a measurement device configured for measuring movement of the wash tub, and a water level detection system comprising a pressure sensor fluidly coupled to the sump, the method comprising:
operating the drain pump assembly to drain the wash fluid from the sump;
measuring the movement of the wash tub using the measurement device;
measuring a water level within the sump using the water level detection system;
determining that the measured movement indicates that the sump is empty;
determining that the measured water level indicates that the sump is not empty; and
identifying a fault condition in the water level detection system in response to determining that the measured movement indicates that the sump is empty and the measured water level indicates that the sump is not empty.