Samsung Washer nF1 Error Code: Causes and Fixes

Quick answer: On a Samsung Washer, the nF1 error code means the hot water inlet has failed to fill. Samsung Washer nF1 is a no-fill fault specific to the hot water inlet. The machine requires hot water for the selected cycle but the drum did not fill with hot water within the expected time. nF1 is closely related to the 4C2 code — both indicate a hot water supply problem.

Quick Fix for Samsung Washer nF1

• Confirm the hot water supply valve at the wall is fully open.
• Inspect the hot water inlet hose for kinks.
• Clean the mesh filter at the hot water inlet connection point on the machine.
• Restart the cycle.
• If nF1 persists, the hot water inlet solenoid valve inside the machine may need replacement.

Common Causes of Samsung Washer nF1

• Hot water valve closed: Shutoff valve at wall not fully open.
• Blocked inlet filter: Scale or sediment blocking the mesh filter in the hot water inlet port.
• Low hot water pressure: Insufficient pressure at the hot water supply.
• Failed hot water inlet valve: The solenoid valve controlling hot water entry has burned out or failed mechanically.
• Incorrect connection: Hot and cold hoses swapped at the back of the machine.

You got this!

Follow the steps below one at a time — many error codes can be fixed faster than they look.

Related Samsung Washer Water Supply Error Codes

• Samsung Washer 4C Error Code — water supply fault
• Samsung Washer 4C2 Error Code — hot water supply fault
• Samsung Washer nF Error Code — no fill fault
• Samsung Washer nF2 Error Code — cold fill fault
• Samsung Washer 4E Error Code — water supply fault (older models)

Back to Samsung Washer Error Codes

See the complete list at the Samsung Washer Error Codes Complete Guide.