Strange Liftmaster Professional Action

I hope someone knows what this problem is. My garage door works fine until it gets afternoon sun on it, something heats up, and then it won't close. I live in a climate where it reaches 85 to 105 degrees from mid April until mid October. My garage door faces west. I can get home at 4:00PM and the door will open but after parking the car it will not close. It moves about a foot or two, bucks a few times, and then returns to its open position. A relay on the opener motor clicks about six times along with flashing lights and then stops.

I've tried greasing the tracks. I've noticed that there was a lot of rubber on the tracks at the curve and just below it. I've tried putting spacers in the connectors just below the curve to move the track slightly inward as it looked like the rollers might be too close to the inside of the tracks. Neither of these attempted fixes those worked. I've noticed that the center track is about 3/4" lower at the motor than near the curve so the motor is pushing uphill very slightly when trying to close. I haven't tried to level it yet.

Does anyone have an idea of what is wrong? It only happens when trying to close, not when opening the door. If I wait until the evening and the sun is down it will close. So it must be the heat causing the issue.

It's the sun "blinding" the photo-electric safety sensors at the bottom of the door not the heat. You could try moving the sensors back a few inches into the garage so they would be shaded (if you have room). You could also try placing some small pieces of cardboard on the side of the sensors (side facing the outside) so the cardboard throws some shade on the sensors.

This is a common problem with garage doors that face east or west and the problems usually lasts a couple of weeks to a few months depending on how much sun your garage receives.

GDZone wrote:It's the sun "blinding" the photo-electric safety sensors at the bottom of the door not the heat. You could try moving the sensors back a few inches into the garage so they would be shaded (if you have room). You could also try placing some small pieces of cardboard on the side of the sensors (side facing the outside) so the cardboard throws some shade on the sensors.

This is a common problem with garage doors that face east or west and the problems usually lasts a couple of weeks to a few months depending on how much sun your garage receives.

Moving the sensor back or boxing it didn't work. What did was to switch/reverse the sensors. Happy camper now. It was only a problem during late spring/summer because of the angle of the sun. That's why I thought it was the heat.