Question about Chamberlain Powerdrive PD422D 1/2 HP Security Plus Screw Drive Garage Door Opener

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Door closes 75% of the way and re-opens, light starts flashing.

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If you have a Chraftsman/Liftmaster:
Check to see if the door is running correctly.
Run the door down and pull the emergency release. See if the door will run easily by itself.
If it runs hard by hand try lubricating the rollers and hinges with silicone spray or some form of lubricant (not WD 40)
If the door runs fine then check the up and  down force on your operator (the box that hangs from the ceiling). If the light bulb(s) on your operator are on the front and/or back, the force adjustment screw is on the back of the operator. If the lights are on the sides of the operator then the force adjustment screw is on the right side (looking from the back of the operator and facing  the garage door). Turn the light blue adjustment screw with the up (or down) arrow to a higher number.
If this does not solve your problem the top bushing could be going out of your operator. Open the case and see if a lot of black filings are on the top of the big gear. If so the gear assy. will have to be replaced part # 41C4220A

Posted on Jan 07, 2009

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1 Answer

Garage door won't open or close using remote (light on lifter flashes twice) but will open and close using the button inside the garage.



WHEN HOLDING IT DOWN MAKES THE DOOR CLOSE PROPERLY THE PROBLEM IS IN THE SAFETY EYES.


ARE BOTH LEDS ON? - CHECK FOR A LOOSE OR BROKEN WIRE.

ARE THE EYES WIRED CORRECTLY?

ARE THEY AIMED AT EACH HOLDING DOWN THE WALL BUTTON OVERRIDES THE SAFETY EYES.

OTHER?

Oct 10, 2010 | Chamberlain Powerdrive PD422D 1/2 HP...

1 Answer

When using the remote the door comes within 8 inches of the floor than opens again. I have adjusted everything and the security lights are on


If the main light flashes 10 times when the door reverses you have a door sensor problem. Make sure the lights on the sensors are not flickering. You have to look very closely to see this.

Dec 08, 2009 | Chamberlain Powerdrive PD422D 1/2 HP...

1 Answer

Wont open when I press door opener. makes a clicking sound and reset light is blinking


I, PRESS THE REMOTE THEN UNIT START TO BLINK THE LIGHT. ALSO IT WORK WHEN HOLD THE MANUAL SWITCH TO CLOSE AND OPEN THE GARRAGE DOOR.

Oct 27, 2009 | Chamberlain Powerdrive PD422D 1/2 HP...

1 Answer

IChmberlain Garage door does not pen or close


The light flashing 5 times is the code for "RPM sensor or motor overload" and the 10 clicks sounds like the relay for the main light bulb that flashes when the door sensors are blocked or misaligned.

If you want an owners manual and have Adobe Reader you can go here and get one.

http://www.chamgerlain-diy.com/pdfdocs/A2490M.PDF

Oct 15, 2009 | Chamberlain Powerdrive PD422D 1/2 HP...

2 Answers

Remote does not open or close garage door; inside button flashes


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.

Jan 24, 2009 | Chamberlain Powerdrive PD422D 1/2 HP...

1 Answer

Chamberlain door will not close, despite down force set to max


Problem solved, sort of-
My unit has self diagnostic capabilities: next to the remote sync red button, is a yellow light the indicates diagnostic readings by blinking. In my case the light was flashing 5 times after the door failed to close. This meant RPM sensor failure. I rechecked the sensor and "flywheel" cap and found that it was not completely secured. With the "flywheel" in the proper position, providing readings for the RPM sensor, the door completely closed.
But my yellow diagnostic light is still flashing 5 times. My door is operating correctly, but the diagnostic feedback is still not completely happy with my RPM sensor. So I will keep and eye on it.

Oct 11, 2008 | Chamberlain Powerdrive PD422D 1/2 HP...

1 Answer

Clossing Door


If the door closes by holding the wall button you have a photo eye issue. Check your photo eyes for proper operation.

Sep 05, 2008 | Chamberlain Powerdrive PD422D 1/2 HP...

2 Answers

Door will only close when held down


if you obstruct the photo eye does the light flash ?

Jun 13, 2008 | Chamberlain Powerdrive PD422D 1/2 HP...

3 Answers

Go down only if I maintain the button pressed until it is close


the problem is with the sensor at the bottom of the railing. We had to replace the photosensor on one of them.

Dec 06, 2007 | Chamberlain Powerdrive PD422D 1/2 HP...

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