Lift Master 1/2 hp won't go down w/o help

tulsaagSeptember 5, 2010

I have Liftmaster Professional 1/2hp if you put door down it goes down for a second then light start blinking and door stops. If I hold the button on the wall down until the door reaches the floor then the door goes down and stays down. The door goes up fine. Any suggestions? Just had both springs replaced. If you disconnect door the opener does the same thing, so we don't think it is the door.

Thank you for reporting this comment. Undo

Check your door sensors for proper alignment. Each of them has a small light that will be lit when they are pointed at one another. If both lights will not come on you have a bad sensor or bad wiring to them.

    Bookmark   September 7, 2010 at 10:12AM
Sign Up to comment
More Discussions
Minimum garage stall depth?
We have a 3-stall attached garage, where we park two...
Garage Door Torsion Spring
Have you noticed that local HomeDepot/Lowes do not...
2x6 strength? How much weight will a truss in my garage hold?
I want to build an engine hoist in my garage. I found...
Need error codes for Craftsman 41A4315-7D.
Need error codes for Craftsman 41A4315-7D Garage Door...
Keyless lock for manual garage door?
I have a two car garage with separate manual lift garage...
Sponsored Products
Green Large Lay-n-Go
$47.99 | zulily
Hotel Grand 1000 Thread Count Optima Loft Down Alternative Pillow (Set of 2)
Atlantis Tubs 3260SHAR Soho 32 x 60 x 20 - Inch Rectangular Air Jetted Bathtub w
Beyond Stores
Avia Embroidered Pillows - Set of 2
Home Decorators Collection
ET2 Lighting E94441-113SN Minx Satin Nickel Mini Pendant
Littman Bros Lighting
Loloi Rugs Weston 2'3 X 7'6 Beige Runner Rug
$139.00 | LuxeDecor
George Kovacs Cubism Collection 30" Wide Bath Wall Light
Euro Style Lighting
Two Sausalito Chairs
$4,918.00 | Horchow
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™