Quick answer: On a Samsung Washer, the nF error code (sometimes written as nF or nF1) means the machine could not fill with water within the expected time. Samsung Washer nF is closely related to the 4C and 4E codes — all three indicate a water supply problem. The most common causes are closed or partially closed water supply valves, kinked inlet hoses, clogged mesh filters at the inlet, or insufficient water pressure. Open supply valves fully, check hoses, and clean the inlet filters to resolve most Samsung Washer nF errors.
Samsung Washer nF stands for No Fill. The machine attempted to fill the drum with water at the start of a wash cycle but did not detect the water level rising within the expected time window. The Samsung Washer stops and displays nF to prevent the motor and drum from running dry.
Samsung Washer nF, 4C, and 4E all refer to the same category of water supply fault. Which code is displayed depends on the model generation and firmware. All three codes share the same diagnostic approach and fixes.
The hot and cold water taps behind the Samsung Washer must be fully open for normal filling. Even a valve that is only three-quarters open can restrict flow enough to trigger nF, particularly on cycles that require fast filling.
Pushing the Samsung Washer against the wall can kink the inlet hoses, severely restricting water flow. This is one of the most common causes of nF after the machine has been moved or reinstalled.
The small mesh screens inside the Samsung Washer inlet ports catch sediment and debris from the water supply. Over time these screens become blocked, reducing flow and triggering nF errors. Cleaning the filters every 6–12 months prevents this issue.
Insufficient supply pressure means the Samsung Washer fills too slowly, and the fill time-out window expires before the drum reaches the required water level. Minimum recommended pressure for most Samsung Washer models is 0.5 bar.
If the internal solenoid inlet valve has failed, it will not open when commanded by the Samsung Washer control board. No water can enter regardless of supply pressure, causing an immediate nF error at the start of every fill cycle.
Follow the steps below one at a time — many error codes can be fixed faster than they look.
Locate and fully open both water supply valves behind the Samsung Washer by turning them counterclockwise. Verify both valves are open before trying any other fix.
Pull the Samsung Washer forward and inspect both inlet hoses for kinks or compression. Straighten any bent sections. Push the machine back carefully to avoid re-kinking the hoses.
Turn off the supply valves. Unscrew the inlet hoses from the back of the Samsung Washer. Look inside the inlet ports and remove the mesh screens with long-nose pliers. Rinse the screens under running water and brush away mineral deposits. Reinstall, reconnect hoses, and restore water supply.
Use a tap pressure gauge to check household supply pressure. If pressure is below 0.5 bar, contact your water utility or consider a booster pump installation. Running the Samsung Washer at off-peak hours when demand is lower may also help.
If supply, hoses, and filters are all clear but Samsung Washer nF persists, test the water inlet valve solenoid coils with a multimeter. Replace the valve if any coil shows no continuity or incorrect resistance.
Yes. Samsung Washer nF, 4C, and 4E all indicate water supply failure. The code displayed depends on the model. All diagnostic steps and fixes are identical for all three codes.
If nF appears only on cycles that use hot water, the hot water supply valve or hot water inlet valve may be restricted or closed. Check the hot water valve specifically and confirm it is fully open.
Samsung Washer nF means the machine cannot fill with water. Open supply valves, check for kinked hoses, and clean inlet mesh filters to resolve most nF errors. If the problem persists, check household water pressure and test the internal inlet valve. Samsung Washer nF is the same water supply fault as 4C and 4E and responds to the same fixes.
Related Samsung Washer water supply errors: Samsung Washer Error 4C and Samsung Washer Error 4E describe the same fault on different model generations.
See all Samsung Washer error codes: Samsung Washer Error Codes – Complete Guide
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