Ryobi opener attempts to open the door, moves a few inches, then stops and displays E3.

Safety first: Disconnect power before adjusting hardware. Do not stand under a moving door.

• 1. Inspect top of door travel: Check the header area and top door section for anything the door might be hitting (straps, brackets, low ceiling, opener rail hitting a brace). Remove or reposition obstructions.
• 2. Check door balance: Pull the emergency release and manually open the door fully. It should reach the open position without binding. If it is heavy or jams near the top, have a door technician adjust springs and hardware.
• 3. Reprogram up travel limit: Reconnect the trolley. On the Ryobi opener, enter programming mode (usually by holding the PROGRAM button until the display flashes). Use the UP arrow to set the fully open position, then save according to the manual. Ensure the door does not hit the stop bolt or opener rail.
• 4. Verify header bracket and rail alignment: Confirm the Ryobi rail is level or slightly sloped toward the opener and that the header bracket is firmly attached. Misalignment can cause binding near the top.
• 5. Test operation: Run several open/close cycles. If E3 persists with a freely moving door, the internal travel encoder or control board may be defective.