Burning smell or visible smoke from opener during or after operation.

Critical safety warning: Immediately disconnect power at the breaker. Do not attempt to operate the opener again until inspected.

• Do not reset and retry: Continued operation can cause fire or further damage.
• Visual inspection: After cooling, remove the cover and look for burned components, melted insulation, or charred areas.
• Identify source: If the motor casing is discolored or smells burnt, the motor is likely failed. If the odor is strongest at the control board, the board is likely damaged.
• Replace failed components: Replace the motor assembly or control board as indicated. If multiple components are damaged, replacement of the entire opener head may be more economical.
• Check door balance: Before installing new parts, ensure the door is properly balanced to prevent repeat overload.