Error code reference

Samsung Washer Error Code nF

Water Supply Error-caused by foreign material in water supply valve, water supply valve terminal not connected, warm water and rinse connectors wrongly connected, or water temperature sensed higher than 50°C in Wool/Lingerie courses or higher than 70°C during dry cycle.

SourceSamsung Washer - Troubleshooting Guide: Error Codes (WF438AAR)p. 20, 25-26

Diagnostic procedure

The full nF 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
If the water supply valve has a wire disconnected, replace it.

SourceSamsung Washer - Troubleshooting Guide: Error Codes (WF438AAR)p. 20, 25-26

More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
Unlock nF procedure $9.95

Or subscribe: $29/month for all codes plus Max diagnostics, with 70 Max messages a day. Plus applicable tax.

75,000+ service documents · 20,000+ error codes · 100+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass · Plus applicable tax