Samsung Washer Error Code nF

The nF code on a Samsung washer stands for a Water Supply Error. It means the washer is not receiving water properly during the fill phase of the cycle. Common triggers include a clogged inlet valve filter screen, closed water supply taps, reversed hot and cold hoses, or water entering at a temperature above 50°C during a Wool or Lingerie cycle. Checking water supply connections and inlet screen cleanliness is the recommended starting point.

No, you should not attempt to run a wash cycle while the nF error is active. The code indicates that the washer has not filled with water properly, and running the machine without adequate water can stress the motor and pump components. Resolve the underlying water supply issue before resuming normal use.

Resetting the washer by unplugging it for a few minutes may temporarily clear the nF code, but the error will return as soon as the next fill cycle begins if the underlying cause has not been addressed. A reset is useful for confirming whether the issue is intermittent, but it is not a repair. You need to correct the water supply problem, such as cleaning the filter screens or fixing the hose connections, for the code to stay cleared.

Start by confirming that both the hot and cold water supply valves at the wall are fully open. Turn off the water, disconnect the fill hoses from the back of the washer, and inspect the small mesh filter screens inside the inlet ports for mineral buildup or debris, cleaning them if necessary. Also verify that the hot and cold hoses are connected to their correct ports. If none of these steps resolve the issue, the water inlet valve itself may have failed and will need to be replaced.

If the fix is as simple as cleaning the inlet valve filter screens or correcting reversed hoses, there is no parts cost involved, only your time. If the water inlet valve has failed and needs replacement, parts typically range from $25 to $80 depending on the specific model, with professional labor adding another $75 to $150 if you hire a technician.