E7
Henderson
Travel Limit Not Set or Lost
Door will not move; opener displays E7 and emits a series of beeps.
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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
Loss of travel memory after power interruption, Faulty limit encoder on rail, Disconnected limit sensor harness, Corrupted limit data on control board
How to Fix / Troubleshooting
Safety first: Keep people and vehicles clear of the door while reprogramming limits.
Steps:
- Check limit sensor harness: On Henderson belt/chain drive models, locate the limit encoder or magnetic sensor on the rail. Ensure its wiring harness is firmly connected to the control board.
- Inspect encoder: Look for physical damage to the encoder wheel or magnet strip along the rail. Replace if cracked or missing segments.
- Reprogram travel limits: Enter programming mode per the Henderson manual (usually by pressing and holding the SET or PROG button). Run the door to the full open and full closed positions, saving each limit when prompted.
- Test several cycles: Operate the door 3–4 times to confirm consistent stopping points and that E7 does not reappear.
- If limits will not save: The limit memory section of the Henderson control PCB may be defective and require replacement.
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Repair Difficulty
Medium
3/5
Required Part
Henderson Limit Encoder Assembly
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