Opener and other work done in Nov 2013 by Joel. Sensors were installed so that the sun coming up in the east was causing them to think the door should not come down. Didn't fail until now as the sun's direction changes as the seasons progress. Your technician wanted to charge me for the work and I believed it was just an installation error and I wanted him to reverse the sensors. Was kind of a stand off for a few minutes and then he finally agreed that is was probably a recall and I should not be charged. Not a particularly pleasant transaction. After he left the garage door lowered and then immediatly reversed itself and went back up. Has worked correctly since, (failed two times in a row). May be fixed but may not be fixed.