A washer pumps used water into a standpipe or utility sink. The manufacturer specifies how high the discharge should be and how the hose should sit. An installation that allows water to siphon can cause the washer to lose water while filling, while a restricted standpipe can spill during discharge.
Record which phase causes trouble
Note whether the water level falls during filling or water rises out of the standpipe when the washer pumps out. Share a photo of the visible hose route and installation height without pulling on the hose. Stop using the washer if it is overflowing.
Compare the setup with the manual
Share the washer model and mention any recent move or hose replacement. The technician can check hose placement against the installation instructions and assess whether the receiving drain is restricted.
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