Samsung Linear Wash DW80R9950 dishwasher will not fill with water

The checks in more detail

Look at the supply line behind the unit for kinks, and check that the house water pressure is normal by running a nearby tap. In cold weather, check for a frozen line. If water arrives slowly and then the machine stops, the flow is restricted. Make sure the door is latched, since the machine will not fill unless it registers the door as closed. Then clean the inlet. Switch off the power and the water, disconnect the supply line at the inlet valve and look at the small mesh screen for sediment, scale or rust; rinse it clean and reconnect, making sure the fitting is tight. New plumbing and old galvanised pipes often send debris to the screen.

Restore the water and power, run a short cycle and listen for water entering. If the machine still does not fill, the inlet valve solenoid, the water level sensor or the control may have failed. The valve is a modest part, but replacement involves the water connection and the electrics, so a technician should do it with the model number DW80R9950 and the serial number from the label. While you wait, do not run the machine, because a half-filled tub can cause the heater to run dry. Check the filter and the drain too, since a tub that holds water from the last cycle can confuse the fill sensor. The DW80R9950's filling is helped by a few features you should know.

The machine has a leak sensor in the base, and a tub that fills while the sensor reports water in the base will stop the cycle with an LC message, so check that the base is dry. A Samsung dishwasher may refuse to fill if the door is not fully shut, so listen for the latch. If the dishwasher runs the filling stage but the water level looks low, the water may be being used for a quick pre-wash, and the main fill follows. A low-pressure supply or a half-open valve produces a slow fill that the control may judge as a fault, so test the supply with a bucket and a timer if the symptom is intermittent.