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My garage door stops erratically when operated from remote or wired switch. I have cleaned the lenses on the sensors, tried adjusting the limit switches. I have no trouble faults on the LED light. The overhead light comes on when the unit is activated then goes off when the door stops.

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See that the screws that fasten the wires going between the main unit and the sensors are tight. They tend to get loose at the sensors due to vibrating of the door rails.
Track the wires and tighten the screws at the sensors and at the main unit.
No need to power off the system, the voltage at the sensors is low (12V)

Posted on Oct 18, 2013

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