Dishwasher fills but does not heat water, program runs unusually long and E2 appears

Safety first: Unplug the dishwasher and close the water tap before removing panels.

• Confirm symptom: Start an intensive or hot program and, after 15–20 minutes, carefully touch the outer door or side panel; if it remains cold and E2 appears, heating is likely not working.
• Check filters and circulation: Remove and clean the sump filters and spray arms. Poor circulation can sometimes trigger heating errors.
• Access heater assembly: On many Amica dishwashers the heater is integrated with the circulation pump under the tub. Remove the toe-kick and bottom panel to visually inspect for burnt connectors or signs of overheating.
• Inspect wiring: Ensure the heater terminals and wiring harness are firmly connected and not charred.
• Advanced (multimeter required): Measure resistance of the heater; an open circuit indicates a failed heater. Also check the NTC sensor (usually 10–100 kΩ range depending on temperature). Replace the faulty component.
• If unsure: Because this involves mains voltage and water, contact a qualified technician.