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Question About Craftsman Garage Door Opener 139.53978SRT
The Opener is not closing regularly. The Little Y...

The Opener is not closing regularly. The Little YELLOW light next to the RED switch on the Motor Unit blinks ONCE while the door is closed, and Blinks 3 times while the door is open . What does that mean ??

Asked by Randy on 10/29/2014 1  Answer

ManualsOnline posted an answer 10 years 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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