LiftMaster MH Support Question
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Question posted by sbrusin on February 14th, 2014
Mh5011r Motor Hums
The overhead door was working fine, no changes made to it. Now, if power is left on, motor hums continually. Door will open using remote or up/down/stop buttons, but will not close with remote or up/down/stop buttons. Must close door manually using the chain. Thought it might be sensors, so eyes have been disconnected, problem still persists. What could the problem be?
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