Robomow displays E20 and stops, often when transitioning between main area and sub‑zones.

Safety first: Turn the mower OFF before adjusting perimeter wire or working in narrow passages.

• Review layout: Compare your perimeter and sub‑zone layout to the Robomow installation guide. Ensure distances from obstacles and passages meet minimum requirements.
• Widen passages: If the mower struggles in a narrow corridor, widen the passage or adjust the wire to give more clearance.
• Check sub‑zone connections: Verify that sub‑zone wires are connected correctly at the base station or junction points and not creating loops or shorts.
• Reconfigure zones: Using the keypad/app, reset and reconfigure sub‑zone definitions.
• Test transitions: Start a manual mow and observe the mower as it moves between zones to confirm smooth operation.