The F20 error code on a Kenmore washer indicates that the washer is not receiving water. The washer expects to detect water entering the tub within a set time after the fill valve is signaled to open. If no water (or insufficient water) enters, the F20 error is triggered to protect the washer components.
Causes of the Kenmore Washer F20 Error
- Water supply valve (hot or cold) behind the washer is closed
- Kinked water supply hose(s)
- Clogged inlet valve screens/filters
- Defective water inlet valve
- Low household water pressure
- Frozen water supply line (cold climates)
Troubleshooting
- Check both hot and cold supply valves behind the washer — both must be fully open.
- Check hoses for kinks or bends.
- Turn off supply, disconnect hoses from the washer inlet, and inspect the filter screens for sediment. Clean if clogged.
- Verify household water pressure is adequate (minimum 20 PSI).
- If all above check out, the inlet valve may be defective and needs professional replacement.