E18
BFT
Drive Disengagement or Broken Drive Component
BFT garage door opener shows E18 and the motor runs but the door does not move.
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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
Stripped drive sprocket on BFT operator, Broken chain or belt in rail assembly, Disconnected trolley from door arm, Sheared drive pin inside gearbox
How to Fix / Troubleshooting
Safety: Disconnect power and secure the door before inspecting the drive system.
- Observe movement: While briefly running the motor (with caution), watch whether the chain/belt or output shaft turns. Then disconnect power.
- Inspect rail: Check the entire length of the chain or belt for breaks or missing teeth. Verify that the trolley is firmly attached to the door arm.
- Check sprocket: Look at the motor output sprocket for signs of wear or slipping on the shaft.
- Repair or replace: Replace broken chain/belt kits or damaged sprockets with BFT-approved parts. If the gearbox output does not turn even though the motor runs, the gearbox may need replacement.
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Repair Difficulty
Medium
3/5
Required Part
BFT Rail Assembly (Chain/Belt) or Gearbox
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