Question about Chamberlain Powerdrive PD422D 1/2 HP Security Plus Screw Drive Garage Door Opener
Take some toilet paper, or some very light rag and dust the RPM sensor over, under, inbetween and in every spot on that darn thing, and bingo, it will work. Its the plastic ribed piece mounted on the end of the motor under opener cover. If something gets under door as door starts to go down, the RPM`s will slow and thats a warning to stop and go back up. With it being dusty, it can`t sense the RPM`s properly and goes into an alarm every single time. Ugg
Posted on Dec 07, 2013
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Posted on Jan 02, 2017
I thought I had it but I tried this in cold weather the rubber drive belt will contract making the open think that it is binding or getting stuck so I think it is shutting itself down. I released some of the tension by loosing the nut adjacent to the tension spring. The door started working I will see if it works in the morning.
Posted on Dec 11, 2007
What has happened is that you electric eyes are blocked or have gone out. The eyes are at the garage door about a foot of the ground on both sides. There should be a red or green light on one of them. If not some thing is blocking the beam that goes across the door. It is a safety beam so kids can nt get hurt when the door is coming down. If the beam is broke the door will go back up.
Posted on Jan 24, 2009
It is most likly your sensors You should not have to mess with your force settings but I can help you with your sensors assume you have checked to make sure there both looking at each other. First close the door so you can see them better. Tap each one of the sensors to see if any of the lights are flickering. if your then you need to tight them up and try again. Also when its dusk or night close your garage door and look at the lights see if one of the tracks is shaking sensor. If not check the wires make sure there is not staple or cuts in them. Then last thing you can check see if your door is hitting the back of the sensor mount it does happen. Also remove and ropes or handles you have fromt eh buttom of the door. That should take care of the problem. Make another post if your still having problems
Posted on Feb 10, 2009
One sensor should always be yellow, the other should be SOLID green.
If the lights are not consistently SOLID, you have a sensor issue.
TEST: If the door closes completely by pressing and holding down the wall pad button, you have a sensor problem.
Check to make sure the are aimed properly at each other.
Check the wire at the sensor and more importantly at the machine (If the wires are loose at the machine (terminals) it can cause this problem. Remember the machine does shake a lot.
If the wires are good, the sensors are aimed correctly, you have a sensor issue and need to loacte a replacement set.
Posted on Feb 20, 2009
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