Robot mower shows E8 and shuts down shortly after starting; may feel unusually warm.

Safety first: Turn the mower OFF and allow it to cool in a shaded, dry place for at least 30 minutes.

• Check ventilation: Inspect all cooling slots and openings in the Parkside mower housing. Remove packed grass, dust, and spider webs with a soft brush and compressed air.
• Operating conditions: Avoid scheduling mowing during the hottest part of the day. Program the mower to run in the early morning or evening.
• Inspect motors: After cooling, run the mower with the housing open (if safe and allowed by the manual) and feel for a motor that becomes very hot quickly. A seizing motor can overheat the system.
• Check temperature sensor: Locate the thermistor or temperature sensor on the main PCB (often near power components). Ensure it is firmly attached and its wires are intact.
• Firmware reset: Some Parkside models allow a factory reset via the keypad. Perform a reset to clear any software glitches, then test again.

When to replace: If E8 occurs even when the mower is cool and lightly loaded, the temperature sensor or main PCB is likely defective.