Electrolux Dishwasher Error Code F3

F3 on an Electrolux dishwasher indicates a thermistor fault in the heater control circuit. The thermistor monitors water temperature and reports it to the control board. When the thermistor is short-circuited or has lost its connection to the board, the control board disables the heating element as a safety precaution. This means the dishwasher will not heat water for washing or use heated drying until the fault is corrected.

The dishwasher disables the heater when F3 is active, so there is no immediate heating-related safety risk. However, without a functioning heater, wash performance will be significantly reduced and sanitation standards may not be met. It is best to resolve the fault before continuing regular use.

A reset may temporarily clear the F3 error code, but it will return if the underlying thermistor or wiring fault has not been corrected. Resetting the appliance does not repair a failed thermistor or fix a broken electrical connection. A proper repair requires diagnosing and addressing the specific fault in the thermistor circuit before the code will stay cleared.

Some F3 causes are accessible to a knowledgeable DIYer. If the thermistor has simply become loose from the control board, reseating it may resolve the fault. You can also inspect wiring harness connectors for corrosion or looseness and test the thermistor with a multimeter for correct resistance. However, if the thermistor itself or the control board needs replacement, comfort with appliance disassembly and electrical testing is required.

Repair costs depend on the root cause. If only a wiring connector or the thermistor needs replacement, parts typically cost between $10 and $50, with labor adding $75 to $150 if a technician is hired. If the control board is at fault, parts alone can range from $100 to $300 or more, making professional diagnosis worthwhile before committing to that repair.