E18
Henderson
Drive Disengaged or Broken
Opener runs but chain/belt does not move; E18 appears after a few seconds.
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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
Broken Henderson drive chain, Stripped belt teeth, Slipped sprocket on motor shaft, Broken drive coupler
How to Fix / Troubleshooting
Safety first: Disconnect power before inspecting the drive system. Keep hands clear of sprockets and moving parts.
Steps:
- Visual inspection: Remove the opener cover and inspect the chain or belt along the Henderson rail. Look for breaks, slack, or missing belt teeth.
- Check sprockets: Verify the motor sprocket and rail sprocket are firmly attached and not spinning freely on their shafts. Tighten set screws if loose.
- Replace broken drive: If the chain is broken or the belt is stripped, replace with the correct Henderson chain/belt drive kit for your model. Follow the tensioning procedure in the manual.
- Test operation: After reassembly, run the opener with the door disconnected to confirm smooth drive movement before reconnecting the door.
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Repair Difficulty
Hard
4/5
Required Part
Henderson Chain/Belt Drive Kit
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