Robot mower displays E10 and refuses to start; often after firmware update or long storage.

Safety first: Turn OFF the mower and disconnect from the charging station before opening any covers.

• Power cycle: Turn the main switch OFF for at least 60 seconds, then ON again. Place the mower on the station and allow it to boot fully.
• Check display cable: If user‑serviceable, remove the top control panel and reseat the ribbon cable or connector between the panel and the main board.
• Firmware reset: Some Cedrus models allow a factory reset via the menu or a specific button sequence. Consult the manual and perform a reset if available.
• Environmental check: Ensure the mower has not been exposed to moisture inside the housing. Dry the unit in a warm, dry place for 24 hours if condensation is suspected.
• Service requirement: If E10 persists, the main control board or display module likely needs replacement. This should be done by an authorized Cedrus technician to ensure correct firmware and configuration.