"Ed" wrote

Garage Door in question:
Chamberlain 41A5021-1E ½ HP Security +

Problem:
With the open/closing button mounted on the wall, it has started not
closing unless you keep the button pushed down until it is closed
completely. At any time during the closing, you release the button,
it will reverse and open right back up. BTW, it opens with no
problems.

With the remote (with fresh batteries), it will not close or even
start to close at all but will open fine. When telling it to close,
all it does is flash the light 10 times without even trying to close,

http://www.bearcatco.com/helpgifs/ch...eshooting.html

11. Door does not close, light on garage door opener flashing:

- Check The Protector System. Both sensors must be aligned or aimed
across the door opening without any beam obstruction. Remove any
obstruction or align both sensors.
- Check for spider webs and/or dirty lenses. Wipe clean.
- Make sure both LED lights are solid on each sensor housing.
- Check safety sensor wiring and connections to the power head unit.
Repair as necessary.
- Check for diagnostic flashing code "1". Located at the power head unit.
- Try replacing safety sensors. Retest.