Dishwasher stops with E05; water fills but does not heat, and dishes come out cold and wet.

Safety first: Unplug the appliance and turn off water. Heating components operate at mains voltage.

• Confirm symptom: Run a hot program for 10–15 minutes, then carefully open the door. If the water is cold and E05 appears, the heating circuit is suspect.
• Access heater assembly: Remove the lower front panel and, if needed, one side panel. Hoover dishwashers typically use an inline flow-through heater integrated with the circulation pump.
• Check wiring: Inspect the heater terminals and wiring harness for signs of burning, loose spades, or melted insulation. Reseat connectors firmly.
• Test heater resistance: With a multimeter set to ohms and the heater disconnected, measure across the heater terminals. A typical reading is between 20–30 Ω. An open circuit (infinite resistance) indicates a failed heater.
• Check NTC sensor: Locate the NTC (temperature sensor) in the sump or heater housing. Test resistance; it should change with temperature (consult Hoover service data if available). A short or open reading indicates failure.
• Replace faulty parts: If the heater is open, replace the heater assembly (often supplied with circulation pump). If the NTC is faulty, replace the NTC temperature sensor.
• Control board check: If heater and NTC test good, the heater relay on the main PCB may be defective. Board repair or replacement is usually a job for a professional.