Professional series, lift master 1/3 hp, the remotes will not operate door but door will operate from wall pad

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).

Locate the lock button on the wall control. Press and hold this for 3 seconds. The blinking of the light should stop and your remotes will once again work.

To remove the keypad, open the batter cover, remove the battery, now you will see the mounting screw, remove the mounting screw. Teknuw

does the wireless keyless entry have batteries

Try pressing and holding the lock button for 3 seconds to stop the light from blinking. Your wall control may be bad. Usually when that light is blinking it is the remotes that will not work.

The model number will be on the opposite end of where you found the part number you listed. You can then call any Liftmaster dealer listed in your yellow pages.

Check your door sensors. Make sure the small light on each one is lit and not flickering ever so slightly. Tweak them a bit.

If you have the 3 button wall control you need to press and hold the button with the lock icon for 3 seconds.

You may also need to new wall control. You shouldn't have to hold that button in nor press a second time.

What does a normal remote do with the lights?
Is yellow and green normal?

Does your wall switch have a lock feature? By pressing the lock button, the remote control is disabled. A flashing light indicates this feature has been activated.

To deactivate, press and hold the lock button for 2 seconds. The flashing should stop and your remote should work again.