E15 displayed; machine may not start and may show signs of previous overheating.

Safety first: Disconnect power and allow the machine to cool completely before resetting any thermostats.

• Locate safety thermostats: On Hoonved dishwashers, manual-reset thermostats are usually mounted on the tank and boiler. Look for small round devices with a red or black reset button.
• Reset thermostat: Press the reset button firmly until a click is felt. If it immediately trips again during operation, do not continue using the machine until the cause is found.
• Check for scale: Heavy limescale on heating elements can cause localized overheating. Inspect and descale the tank and boiler as needed.
• Verify temperature control: Ensure NTC probes are correctly installed and reading accurately. A failed probe can cause uncontrolled heating.
• Control board relay: If heating continues even when the set temperature is reached, the heating relay on the PCB may be stuck closed and must be replaced.