Method for detecting a low water pressure in a washing machine appliance

A method of operating a washing machine appliance, the washing machine appliance comprising a cabinet, a wash tub mounted within the cabinet and configured for containing fluid during operation of the washing machine appliance, and a wash basket rotatably mounted within the wash tub, the wash basket defining a wash chamber configured for receiving laundry articles, the method comprising:

• receiving a command to commence an operating cycle;
• filling the wash tub with wash liquid from a fluid circulation system configured for providing fluid to the wash tub via an inlet of the fluid circulation system;
• obtaining one or more images of the inlet of the fluid circulation system during the filling step using a camera mounted within the cabinet, the camera positioned and oriented with the inlet within a field of vision of the camera;
• and
• determining whether a water pressure provided to the fluid circulation system is above a predetermined minimum water pressure based on the one or more images, wherein determining whether the water pressure provided to the fluid circulation system is above the predetermined minimum water pressure based on the one or more images is based at least in part on a geometric property of a fluid stream flowing from the inlet in the one or more images, wherein the geometric property of the fluid stream is analyzed by determining one or more dimensions of the fluid stream based on a number of pixels in the one or more images along one or more lines across or through the fluid stream.