Up Arrow LED Blinks 9 Times
LiftMaster
Logic Board Overheat or Internal Error
LiftMaster opener intermittently stops; UP arrow LED blinks nine times.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Extended heavy use causing overheating, failing logic board components, poor ventilation around opener, high ambient temperature in garage
How to Fix / Troubleshooting
Safety: Allow the opener to cool before further operation.
- Rest the opener: If the opener has been used repeatedly, wait 20–30 minutes and try again.
- Improve ventilation: Ensure the opener is not enclosed tightly against the ceiling with no airflow.
- Inspect board: With power disconnected, remove the cover and check the logic board for discoloration or burnt components.
- Check load: Verify the door is balanced and not overloading the opener.
- Replace logic board: If overheating recurs under normal use and the door is in good condition, replace the logic board.
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Repair Difficulty
Medium
3/5
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