Opener beeps and flashes nine times, door stops mid‑travel and reverses or will not move.

Safety first: If the opener housing is very hot to touch, leave power on but stop using it until it cools.

• Allow cooling time: Wait 20–30 minutes for the Merlin opener to cool down. Many models have thermal protection that resets automatically.
• Reduce cycling: Avoid running more than the recommended number of cycles per hour (check your model manual). Continuous operation can trigger thermal overload.
• Check ventilation: Ensure the opener is not boxed in or covered with insulation. Provide at least several centimeters of clearance around the housing.
• Test door balance: Disconnect the opener and move the door manually. If it feels heavy, have the springs adjusted. An unbalanced door overheats the motor.
• Resume operation: After cooling and verifying door balance, test the opener. If the error recurs with light use, the motor or control board may be failing and should be inspected.