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Samsung Washing Machine Error Code nF

Reviewed by the ApplianceErrors Editorial Team · Verified against manufacturer service documentation · Last verified: June 10, 2026
⚠ Medium Severity 🔧 Easy DIY Also shown as: nF1

No fill — water supply insufficient at start of cycle

The most common cause of the nF error on a Samsung washing machine is water supply valve closed or pressure too low (~45% of cases); start with: open supply valves fully.

💰 DIY cost: $0–$70 👨‍🔧 Pro cost: $120–$230 Save $120+ by doing it yourself
Samsung Washing Machine error code nF on the display panel
How the nF code appears on a Samsung washing machine display

What Does Error Code nF Mean on a Samsung Washing Machine?

No fill — water supply insufficient at start of cycle.

At cycle start the control board opens the inlet valve and watches the pressure sensor for a rising water level within a set fill-check window. If it sees no measurable fill, nF (or nF1) fires. It differs from 4C, which flags a fill problem detected mid-cycle, and from HE, a heater fault. The most common trigger is closed valves, low household pressure, or clogged inlet screens rather than the solenoid itself.

Models affected: Samsung top-load and front-load washers across most recent generations, including models such as WF45T6000AW, WF45R6100AP, WF42H5000AW, WA50R5400AV, WA45T3200AW, WF50BG8300AV, WV60M9900AV, and WA54R7600AV
What owners report: Owners commonly report nF right after installation, after a plumbing shutoff, or in winter when a supply line partially freezes. A frequent quick win is simply confirming both hot and cold taps are fully open and rinsing the mesh inlet screens, which often clears the code without any parts.

What Causes Error Code nF?

Here are the most common causes in order of frequency. Start with the most likely cause before moving to the next:

  1. 1
    Water supply valve closed or pressure too low 45% of cases
  2. 2
    Inlet valve screens clogged 35% of cases
  3. 3
    Water inlet valve solenoid failed 20% of cases

How to Fix Samsung Washing Machine Error Code nF

🔧 Easy DIY Est. time: 10–20 min
⚡ Safety first: Unplug the appliance before opening any panels or touching internal components.
  1. 1

    Open supply valves fully

    Both hot and cold valves must be completely open.

  2. 2

    Clean inlet hose screens

    Unscrew hoses at the back of the washer, remove the mesh screens, and clean under running water.

  3. 3

    Test water pressure

    Turn on a nearby tap to check pressure. Below 20 PSI triggers nF.

  4. 4

    Replace inlet valve

    If pressure and screens are fine, test solenoid coils (200–500 ohms) and replace if failed.

    🔩 Samsung inlet valve ($30–$70)

How to Reset Error Code nF

Fix the supply issue and press Start. nF clears when fill is successfully detected.

Note: If the error returns after resetting, the underlying issue has not been resolved. Work through the fix steps above.

Full Samsung washer reset guide → Enter diagnostic mode → Symptom guide: Washer not filling →

Did this guide fix your appliance?

When to Call a Professional

If supply is confirmed and valve is new but nF continues, the fill sensor or control board water detection circuit has failed.

Average professional repair cost for this issue: $120–$230

Related Error Codes

4C
Water supply not detected
⚠ Medium Severity
HE
Water heater error — water not heating to target temperature
⚠ High Severity

Same Code on Other Brands

Error code nF appears on these other brands too. See every brand that shows nF →

LG logo
LG Dryer nF
No heat / airflow fault — dryer runs but cannot maintain heating

Find Replacement Parts

Use these links to find the exact replacement parts for your Samsung Washing Machine:

🔩
Search PartSelect
Samsung Washing Machine repair parts
🔧
Search RepairClinic
Step-by-step video guides

External links — ApplianceErrors.com is not affiliated with these retailers.

More Samsung Washing Machine Error Codes

UE Unbalanced load detected OE Drain failure — water not draining LE Motor locked — drum cannot rotate DE Door not properly closed or door lock failure SUD Excessive suds detected tE Temperature sensor (thermistor) fault

Frequently Asked Questions

Can I keep using my Samsung Washing Machine when error nF appears? +
You often can for a cycle or two, but the water-supply issue behind nF will keep interrupting normal operation until it is fixed. Plan the repair rather than ignoring the code.
What most commonly causes nF on a Samsung Washing Machine? +
Across reported Samsung washing machine repairs, the most frequent is water supply valve closed or pressure too low (45% of cases), inlet valve screens clogged (35%), then water inlet valve solenoid failed (20%). Check them in that order before replacing any parts.
nF keeps coming back after a reset — what should I check next? +
A reset only clears the stored nF fault; if it returns, the water-supply problem is still present. Move on to the physical checks — open supply valves fully, then clean inlet hose screens — since the code will reappear until the root cause is resolved. This is a beginner-friendly job needing only basic hand tools.
How much does it cost to fix Samsung Washing Machine error nF? +
A DIY repair typically runs $0–$70 in parts, versus $120–$230 for a professional service call, so handling it yourself saves around $120. Expect the work to take about 10–20 minutes.
Which Samsung Washing Machine models show error nF? +
nF is documented on Samsung top-load and front-load washers across most recent generations, including models such as WF45T6000AW, WF45R6100AP, WF42H5000AW, WA50R5400AV, WA45T3200AW, WF50BG8300AV, WV60M9900AV, and WA54R7600AV. Other units sharing the same control platform can display it too, so the fixes here generally transfer across the series.

Sources & References

Content verified against manufacturer service documentation. Last verified: June 10, 2026.

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