When activating the door the light will blink a couple of times then stay off, although the door opens/closes fine. Does anyone know what could be the issue?
Three blinking lights & door won't close by Candi
(Winston-Salem, NC)
Garage door will not open and close with remotes. Three blinking lights occur when we try to close door. What does this mean? It is a Linear unit.
I will assume you mean that your garage door will open with your remote but will not close. It should close if you press and hold the wall control button until the door is fully closed.
If that is the case, the 3 blinking lights indicate that your garage door's infrared safety beams are not properly aligned.
1) Check that the operator has power. The green lights on the sender and receiver should be lit.
2) If the receiver's green light is on, but the red light is off, the receiver has power but is not detecting the infrared beam from the sender. The red light might flash when the beam is partially detected. This can be caused by
mis-alignment or something blocking the beam.
Adjust the safety beam sender and receiver while watching the receiver's red light (stay out of the beam while aligning it). When the red light stays on, the beam is aligned and your garage door should operate normally.
http://www.linearcorp.com/pdf/manuals/LCO75.pdf
NOTE: If the receiver's red light remains off, check for:
1) Dirt on the receiver's lens,
2) Sunlight shining into the receiver's lens,
3) A short in the safety beam wiring (from staples or at the operator terminals).
I have a lift master professional 1/2 HP. it works just fine when it opens and closes just one thing, the light does not go on when i press my remote or the wall switch. i checked and changed the light bulb and it works. is the a fuse or something that i'm over seeing?
we had no power surge or shutdowns in.
need help.
SOURCE: my garage door will open just fine, but when I try
Check the obstruction sensors and for anything blocking the doorway. If both sensors do not have the appropriate lights on, adjust them to get the beam across the doorway to the opposite sensor. (My units have amber and green lights on different sides. Both lights must be on.)
I hope this helps.
Cindy Wells
(we often get the sensors out of alignment when someone walks too close to the rail of the door. Weeds and bright sunshine can also interrupt the light beam.)
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