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

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Garage door opener

Will only close when you hold and maintain the button, if you let go anywhere during the process it automatically reopens and the light starts blinking, But will open correctly

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This is cause when there is something blocking one of the sensors. Look on each side of your garage door near the concrete when the door is closed and you will see small sensors that are facing each other.. Make sure they are not misaligned and that nothing is in front of them.

Posted on Dec 04, 2008

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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?

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COULD BE THE SAFETY EYES OR THE RPM SENSOR.

IF HOLDING DOWN THE WALL BUTTON ALLOWS IT TO CLOSE NORMALLY THEN IT WOULD BE IN THE SAFETY EYES.
IF NOT CHECK TO SEE IF THE RPM SENSOR IS IN THE CORRECT POSITION ON THE MOTOR SHAFT.
IF YOU NEED FURTHER DIAGNOSTICS GOTO LIFTMASTER.COM AND SOWNLOAD A FREE PDF FILE OF THE OWNERS MANUAL.

HOPE THIS HELPS

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1 Answer

I have to hold the button on my garage door down it will go down but then returns


HOLDING DOWN THE WALL BUTTON OVERRIDES THE SAFETY EYES.
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?
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THE BOUNCING OFF THE FLOOR IS A DIFFERENT ISSUE - ADJUST THE CLOSE LIMIT JUST SLIGHTLY.

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1 Answer

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

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if you obstruct the photo eye does the light flash ?

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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.

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Garage door opener doesnt close the garage


If you have to hold down the button to close the door, you are bypassing the sensors ...
Check the alignment of the sensors. Should see a solid GREEN light

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door does not close without holding wall button in

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