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

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Garage door keyless entry code

How do I change my code to the keyless entry pad? I have a chamberlan wisper- Thank you

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Re: garage door keyless entry code

Page 36, you can even save this for print. hope this helps.

Posted on Sep 12, 2007

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Re: garage door keyless entry code

Many thanks for the manual, we followed the instruction on the keypad and ended up deleting all the codes, a nightmare.

Posted on Oct 29, 2007

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I installed a new garage door opener in Sept, all was good until my neighbor installed a new on 1 week ago-now my garage door is opened when i get up, can i reprogram my unit?

Hi Diane.... yes. Newer garage door openers don't have changeable codes inside the unit or transmitters. You use the learn button to erase all the memory & to program transmitters into the unit. Each transmitter has a unique signal permanently set at the factory.
If you have had your garage door opener for a few years, you have to make a change on the back of the motor unit up by the ceiling and in the remote[s] by changing one or more tiny switches, called dip switches. Open up the remote and and take a look. If you have the dip switches, a series of tiny rocker switches that can rock one way or the other, then just change one or more of them to the opposite side and do the same with the set of dip switches on the back of the motor in the garage that moves the door.

If you have a newer system, one with no dip switches, you will just erase the memory and reprogram it with a new memory. To do that:

Programming Steps: 1) Locate the smart button on the motor head which is directly under the screw terminals where the push button and photo-cell wires connect to the unit and above the antenna wire. You may have to remove a lens or light cover to gain access to the learn button. 2) Push the smart button momentarily (Holding the smart button until the L.E.D. light beside the button goes out will erase all transmitter and keyless entries that are programmed into the unit) and verify the
L.E.D. light next to the button is lit solid. 3) Push the transmitter button that you want to use for that door within thirty seconds and before the
L.E.D. goes out. The L.E.D. will flash once and the transmitter will operate the door the next time the button is pushed. 4) If you have more than one door and a multi-button transmitter repeat steps 2-3 above for each door by using a different transmitter button for each unit. (Using the same button for more then one door at the same location will cause all the doors using that button to open and close at the same time and is not recommended.) The openers normally come with a single or a 3-button transmitter but 2-button and
4-button transmitters are also available as an option. 5) Repeat steps 2-3 above if you have more than one transmitter to program into your garage door opener.


Thanks for choosing Fixya!

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