Robot mower displays E17; often related to PIN code or theft protection.

Safety first: Keep the mower in a secure location while troubleshooting.

• Enter correct PIN: Carefully enter the PIN code as provided in the Hecht documentation. Ensure each key press is registered on the display.
• Wait lockout period: If the mower is locked due to too many attempts, wait the specified time (often 10–30 minutes) before trying again.
• Check keypad: If some digits do not respond, the Keypad / Control Panel may be faulty and require replacement.
• Contact support: If you have forgotten the PIN, contact an authorized Hecht service center with proof of purchase. They can reset the PIN using a service tool or by replacing the Main Control Board.