Samsung Washer nF Error Code: What It Means and How to Fix It
Updated · from manufacturer service documentation
The nF code on a Samsung washer means No Water Fill — the machine's control detected that filling isn't progressing on schedule. Per Samsung's own timing thresholds, this triggers if filling continues for more than 16 minutes, or if there's no change in water level for 3 minutes during the fill step.
What Causes the nF Code
| Cause | Likelihood | DIY difficulty | Related part |
|---|---|---|---|
| Hot/cold water supply hoses not connected properly | Most common | Easy — check hose connections | — |
| Water supply disconnected (faucet closed) | Common | Easy — open faucet | — |
| Water level sensor abnormal (related "LE" fault) | Less common | Moderate — sensor check | Water level sensor |
| Water valve filter clogged or valve failed | Less common | Moderate — clean filter/replace valve | Water valve |
How to Fix the nF Error, Step by Step
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Check the hot and cold water supply hose connections
Samsung's own diagnostic for this fault starts here — confirm both hoses are properly connected.
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Confirm the water supply isn't disconnected
Make sure the faucets feeding the washer are open.
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Check whether the water level sensor is normal
If nF appears alongside an LE fault, the sensor itself — not the water supply — is the more likely culprit.
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Work through the full fill diagnostic if the above doesn't resolve it
See our dedicated Samsung washer not-filling guide for the complete valve-filter and wiring checklist ("Woong" sound test, connector inspection, pressure sensor check) used once the basic hose/supply checks are ruled out.
Which Models This Applies To
Documented for the Samsung front-load WF328AAW series, where the fill-timeout thresholds are specifically 16 minutes of continuous filling or 3 minutes with no level change. These exact numbers are platform-specific — don't assume they apply to every Samsung washer generation.
See also: Samsung washer not filling. Full list: all Samsung washer error codes.
Frequently Asked Questions
How long does a Samsung washer wait before showing nF?
On this platform, if filling continues for more than 16 minutes, or the water level doesn't change for 3 minutes, the nF code triggers.
Is nF the same as a general "not filling" problem?
Yes — nF is simply the display code for a fill failure. The underlying causes (hose connections, supply, valve, sensor) are the same ones covered on our general not-filling troubleshooting guide.
What does it mean if nF and LE show up together?
LE points specifically to the water level sensor — if both codes appear, check the sensor before assuming a simple supply or hose issue.
How do I clear the nF code?
Fix the water supply/hose/valve issue, power the washer off, then restart the cycle — the code clears once the washer detects normal fill progress.
Based on the Samsung service documentation for the WF328AAW washer series. Last updated: .