Whirlpool Dishwasher Error Code F3 E2 — Heating System Failure
What this means
The F3 E2 error code on Whirlpool dishwashers indicates a problem with the heating system. The dishwasher uses a heating element to raise the water temperature during wash and rinse cycles, and a thermistor (temperature sensor) to monitor it. When the control board cannot detect proper heating or the thermistor gives out-of-range readings, F3 E2 is displayed. This affects wash performance and sanitization.
Alternate codes: F3E2
Step-by-step fix
4 stepsCheck the water temperature
Run your kitchen faucet hot water for 1–2 minutes before starting the dishwasher. If the incoming water is already cold, your water heater may be the issue rather than the dishwasher.
Dishwashers work best with incoming water temperature of at least 120°F (49°C).
Test the heating element
Turn off power to the dishwasher. Access the heating element at the bottom of the tub. Disconnect the wires and test with a multimeter for continuity. A good element should read 10–30 ohms.
Also check for continuity between each terminal and ground to detect a short.
Test the thermistor
Locate the thermistor (temperature sensor) — it's usually near the heating element or sump area. Disconnect it and measure resistance. At room temperature, it should read approximately 50K–55K ohms (NTC type).
The thermistor's resistance should decrease as temperature increases. Test in warm water to verify it changes.
Replace the faulty component
Replace the heating element if it tests open or shorted, or the thermistor if its resistance is out of range. Reassemble and run a test cycle.
If both test good, the control board relay for the heating element may have failed.
When to call a professional
If both the heating element and thermistor test within specification but the error persists, the main control board needs professional diagnosis.
Related error codes
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
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