Sommer opener shows E11 and the courtesy light may flash; door may not move.

Note: This applies to Sommer models with external safety edge or additional safety inputs.

• 1. Identify external devices: Determine if your opener has a wired or wireless safety edge, loop detector, or other external safety device connected.
• 2. Disconnect external inputs: Remove wires from the safety edge or auxiliary safety terminals on the control board. Power up and check if E11 clears.
• 3. Inspect devices: Check the safety edge strip for physical damage or water intrusion. For wireless edges, replace batteries and ensure the transmitter is not crushed.
• 4. Verify wiring: Reconnect wiring according to the Sommer wiring diagram, ensuring normally‑closed vs normally‑open contacts are correctly used.
• 5. Replace faulty device: If reconnecting a particular device re‑triggers E11, replace that safety edge or accessory.