Error code reference

Samsung Washer Error Code nF1

Water supply error caused by foreign material in water supply valve, disconnected valve terminal, incorrectly switched warm water and rinse connectors, or disconnected PCB terminal from drain hose to detergent drawer.

SourceSamsung Top-Loading Washing Machine - Service Manual (WA5471AB, WA5451AN)p. 19, 23

Diagnostic procedure

The full nF1 procedure

Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.

MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Check the resistance for the water supply valve (0.9 kΩ to 1.2 kΩ between terminals) and check for foreign material in the diaphragm and filter.

SourceSamsung Top-Loading Washing Machine - Service Manual (WA5471AB, WA5451AN)p. 19, 23

More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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