Question about liftmaster Chamberlain Garage Door Opener Transmitter 300MC
Door opens and closes but light stays on
Posted by Anonymous on
If the wall transmitter has a button that says "LIGHT" be sure it is pressed and the light should go off. If you press that button and the light goes on, it will not shut off unless you press it again. If that's not the problem, you may have a failed light relay in the opener. One other thought, are you using 75 watt bulbs in the opener? I see where some people are trying LED bulbs to save money and they will not shut off when they are supposed to due to low current draw.
Posted on May 12, 2014
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Posted on Jan 02, 2017
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