BFT garage door opener shows E20 and the door will not close automatically after opening.

Safety: Ensure safety devices are functional before enabling auto-close.

• Check parameters: Enter the BFT programming menu and verify that the auto-close time is set to a non-zero value if auto-close is desired.
• Verify safety status: Confirm that photocells and safety edges are not indicating a fault (no E04/E08). Auto-close is often inhibited if a safety input is open.
• Logic mode: Ensure the operating logic (e.g., automatic, semi-automatic, condominium) is correctly set for your application.
• Test manual close: If the door closes correctly with a manual command but not automatically, suspect a timer or logic issue on the board.