The Kenmore washer F3 error code points to a malfunction in the pressure switch or water level sensor circuit. The pressure switch monitors the water level in the tub by measuring air pressure in a small tube connected to the tub. When this sensor fails or the tube becomes clogged, the washer cannot properly control the fill level.
Causes of the F3 Error
- Clogged pressure switch hose (debris or soap residue)
- Defective pressure switch
- Air leak in the pressure switch hose
- Control board fault affecting pressure switch circuit
Troubleshooting
- Locate the pressure switch hose (a thin tube running from the tub to the switch on the control panel area).
- Disconnect the hose and blow through it gently to check for obstructions.
- Reconnect and test.
- If the error persists, the pressure switch requires professional testing and possible replacement.