nF
Samsung Washing Machine
Severity: ModerateWhat Does This Error Mean?
The nF error means your Samsung washer is not filling with water. The machine tried to fill but no water came in. This is usually a water supply issue, not a washer malfunction.
Affected Models
- WF45R6100AW
- WF50R8500AV
- WF42H5000AW
- Most Samsung front-load and top-load washers
Common Causes
- The water supply valves behind the washer are turned off
- The water inlet hoses are kinked, bent, or frozen (in cold weather)
- The mesh filters inside the inlet hose connections are clogged with sediment
- The water inlet valve inside the washer has failed electrically
- Low water pressure in your home is preventing proper filling
How to Fix It
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Check that both hot and cold water valves behind the washer are fully open.
Turn both valves counterclockwise to open them all the way. They should be parallel to the hoses.
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Make sure the water inlet hoses are not kinked or bent.
Straighten any kinks. If a hose is crushed, replace it. Check both the hot and cold hoses.
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Clean the inlet hose mesh filters.
Turn off the water. Disconnect the hoses from the back of the washer. Pull out the small mesh screens with pliers and rinse off any sediment.
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Check your home's water pressure by running a faucet nearby.
If the water flow is weak everywhere, the problem is your home's water supply, not the washer.
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If water supply is fine but the washer still won't fill, the inlet valve needs replacement.
The inlet valve is an electrically controlled part inside the washer. A technician should replace it.
When to Call a Professional
If the water supply is fine but the washer still won't fill, the inlet valve may be bad. This is a common repair that most technicians can handle quickly. Expect costs of $120–$250 for parts and labor. If you have low water pressure, contact your water company first.
Frequently Asked Questions
Is nF the same as 4E on Samsung washers?
They are very similar but not identical. Both relate to water not entering the washer. The nF code specifically means no water flow was detected. The 4E code is a more general water supply error.
Can frozen pipes cause the nF error?
Yes — if your washer is in a garage or unheated area during winter, the inlet hoses can freeze. The washer can't fill if the water inside the hoses is frozen. Warm the area and let the hoses thaw before trying again.
How do I clean the inlet filters on my Samsung washer?
Turn off the water supply valves first. Unscrew the hoses from the back of the washer. You'll see small mesh screens inside the hose connections. Pull them out gently with needle-nose pliers. Rinse them under water and put them back.