SAMSUNG WASHER WA50R5400 Won T Fill

Water Inlet Valve Assembly

This assembly contains the solenoids that control water flow. Mechanical failure occurs when the internal diaphragms perish or the solenoid coils fail electrically, preventing the valve from opening even when the control board provides 120V. This is the primary cause for '4C' or 'nF' fill errors.

SKU: DC97-15459G

Water Level Pressure Sensor

If this sensor fails or the associated air tube is blocked, the machine may incorrectly detect that it has already reached the target water level or detect a false leak. This causes the control board to withhold power from the inlet valves as a safety precaution, resulting in a 'Won't Fill' state.

SKU: DC96-01703G

Inlet Mesh Filters

As identified in Source 6, debris or sediment in the water supply can clog the fine mesh screens located at the valve's intake. This physical blockage prevents water from entering the machine even if the solenoids are operating correctly. These can be cleaned, but if damaged or heavily calcified, they require replacement of the valve connection or thorough descaling.