I have two Chamberlain Liftmaster Professional Formula I Garage door openers with purple learn buttons. What model number is assigned to these door openers? I am having trouble programming my HomeLink in my car to operate them.

Asked by Stan on 09/01/2014 1  Answer

ManualsOnline posted an answer 10 years, 2 months ago

The ManualsOnline team has found the manual for this product! We hope it helps solve your problem. Get the Manual Here

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