Strange diagnostic problem, Craftsman garage door opener

crmooresJune 16, 2013

Model 139.53985D, 1/2 HP chain drive
Started having a problem opening/closing the door, it would move 6" at a time then shut off (thermal protection I gather, however if I tap the unit the power will come back on.
The diagnostic light flashes 3 times signifying it's a wall control or wire to the wall control problem. Per the manual I determined the wire to the control was the problem (the motor would start up when I shorted a wire across the 2 terminals). I connected a new wire and had same results.
After reading as much as I could find it sounded like the RPM sensor because the door would move 6" and stop. I changed the RPM sensor and the interruptor cup, same results.
I've had the door disconnected to remove that from the equation, and I unhooked the wall control. The safety reversing sensor lights (amber and green) are glowing steady, no flickering, etc.
I don't know if this is a logic board issue or what, the diagnostic light flashing 3 times points to the wall control as the cause. So I'm considering buying a new unit. This unit is about 4 - 6 yrs old.
Thanks for any help!

Thank you for reporting this comment. Undo
Windows on Washington Ltd


Talk about some serious diagnostics.

You are really deep on this one.

Have you tried calling them with the update? I unfortunately don't have any advice as you have gone well beyond what I have had to deal with previously.

    Bookmark   June 19, 2013 at 8:58PM
Thank you for reporting this comment. Undo

I was never able able to get hold of any kind of tech help, just a repair line, help fai line that was no more help than the manual, or parts ordering.

I changed the logic board and voila!

    Bookmark   June 20, 2013 at 5:10PM
Sign Up to comment
More Discussions
Turning part of garage into storage/man cave/laundry
Some background in my project: 1. I need a study, so...
Garage door won't open - even manually
Our garage door won�t open - the motor works,...
Garage Door Exterior Lighting Help Please
Hello members, On the exterior, do you prefer lighting...
Need Help with My SnowBlower
I just recently bought a Craftsman 24" snow thrower,...
Keyless lock for manual garage door?
I have a two car garage with separate manual lift garage...
Sponsored Products
Excel 26-inch Five Ball Bearing Slide Drawers Top Tool Chest
Westinghouse Outdoor Lanterns. 1-Light Oil Rubbed Bronze on Cast Aluminum Exteri
$80.61 | Home Depot
Green & Orange Three-Bin Storage Shelf
$34.99 | zulily
Bungalow Flooring Door Mats Boxwood Evergreen 24 in. x 36 in. Monogram E Door
$59.97 | Home Depot
Moooi | Smoke Dining Chair
Black Wedge Solar Powered LED Security Light
$69.95 | Lamps Plus
Winburn Architectural 8" High Black Outdoor Downlight
$59.00 | Lamps Plus
Black Bull 36 Inch Metal Brake With Stand
Beyond Stores
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™