Henderson Limit Switch Failure

Opener motor runs continuously without stopping at end positions.

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.

Possible Causes

Broken limit switch, Disconnected limit wiring, Faulty control PCB limit circuit, Damaged encoder

Safety first: Immediately disconnect power to prevent damage or the door running off the tracks.

Steps:

Inspect limit switches/encoder: Locate the Henderson limit switches or encoder on the rail. Check for broken actuators or loose mounting.
Check wiring: Verify the limit wires are firmly connected to the control board.
Replace faulty parts: Install a new Henderson limit switch set or encoder if damaged.
Test carefully: Reconnect power and test while ready to cut power if the door does not stop correctly.

Hard 4/5

Henderson Limit Switch Set

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