20 Most Recent Chamberlain 1/2-HP Whisper Drive Belt Drive Garage Access System - Page 5 Questions & Answers

DOES IT REVERSE OR STOPS BUT NOT TOUCHING THE FLOOR?

IF IT DOESN'T TOUCH THE FLOOR YOU EITHER NEED TO ADJUST THE DOWN TRAVEL OR LENGTHEN THE CONNECTING ARM.

IF IT REVERSES YOU NEED TO DETERMINE IF IT IS THE SENSITIVITY OR THE SAFETY EYES.

YOU NEED TO SET THE SENSITIVITY - THIS IS A CRITICAL ADJUSTMENT KEPP BACKING IT OFF 1/16 TURN AT A TIME UNTIL THE DOOR REVERSES WITH NO OBSTRUCTION THEN TURN IT BACK 1/8 TURN & RETEST

TRY TO REPROGRAM THE REMOTE

IF YOU CAN'T REPROGRAM IT THE BATTERY IS PROBABLY DEAD

http://www.retrevo.com/support/Chamberlain-WD822KD-manual/id/23294dj679/t/2/
I think, you controller board is either misreading, or is internally faulty. This seems like a fairly classic, micro problem I have included a manual for you. Please go through the troubleshooting procedures and it may help you isolate the problem. It is either that or an external sensor, that "Tells" the Micro, whats going on. As related you will need to test each sensor, with a meter.

HI,

It seems that your wiring is wrong. Look at it again.

Cheers
TeaCii
If you own website, add live support almost free
Real security guard to watch your cctv for $1/day

Check the main battery,it might be dead,beeping sound it a require a another battery.

Check your manual or go on line and find out where it is.

Is there a limit switch to tell it when it is fully closed?

Make sure you didn't accidently knock a wire off the rear of the motor unit. The wires connect to terminals 1 and 2 for the wall control.

I just had that problem this morning and the cause was that the springs that help hold the weight of the garage door were broken. This caused the garage door opener to raise the garage door a fe inches and then drop again. We called in a professional and $200 later we had new springs and everything works fine now.

If working with remote and/or keypad check wire from opener to doorbell/push button/wall controller. Rami orangedoors.com

Question edited for clarity. This is an older model. Either the weight of the door is borderline for the motor and that is why it is beeping. The counterbalance system need adjusting. Or the carbon brushes on the motor need replacing. You can also try lubricating every single item that moves and the tracks to reduce rolling and sliding resistance. Use proper garage door spray or light machine oil not WD40 which goes waxy / gummy after a couple of months. https://www.google.com/search?q=Coromaster+B2B+garage+door+opener and https://www.google.com/search?q=Coromaster+B2B+garage+door+opener+opens+halfway and Beeps https://www.google.com/search?q=Coromaster+B2B+garage+door+opener+motor+beeps ..

Question edited for clarity. It doesn't look like that model number is correct 390 is the frequency of the signal. It is mentioned here are part of the regulatory approval process as a much longer number https://fccid.io/B8QOHDH390 The Learn Button is next to the bulb https://www.geniedoor.com/support/programming-instructions/garage-door-opener-remote-programming/ More here https://www.geniedoor.com/support/programming-instructions/ https://www.google.com/search?q=genie+receiver+ohdh390+learning+manual ..

Sounds to me like a cold solder joint on one of the boards

A concrete mixture ratio of 1 part cement, 3 parts sand, and 3 parts aggregate will produce a concrete mix of approximately 3000 psi. (20685 kpa)

check safety sensors located near floor on both sides of door.

Unlikely your garage door is battery operated. The remote and wall unit yes. The remote just tells the mains operated motor to get turning. The issue will either be that everything that moves needs lubricating, motor spindle, pulleys, chain, tracks and pivots, or the carbon brushes in the motor need replacing. https://www.google.com/search?q=DTS+600+garage+door and how to fix https://www.google.com/search?q=DTS+600+garage+door+opens+slowly ..

Question edited for clarity. Question moved from Cars and Trucks category. Look at the corners of the doors that hold the aluminium frame together and if it is a modular door, tighten them up. If it is a solid door, adjustment can be made by shimming behind the bottom hinge with a piece of cardboard. This will move the bottom out and up. ..

Look at this video, it should answer your question. The learn button in under the green button. Remove the green button. http://www.youtube.com/watch?v=7CqMy2UfG9k

Check the opening limit dial on the garage door opener unit. You can locate the dial that controls the opening limit on the opener unit and use a flat head screwdriver to turn the dial counter clockwise until the door stops about an inch and a half away from the stop bolt. Then, test the door and make sure it does not slam into the bolt. A video tutorial on how to adjust the opening limit of a Craftsman garage door opener is available on YouTube. If the above step does not work, check the limit switches on the garage door opener. Most garage door openers have limit switches that control how far the door opens and closes. Improperly adjusting these switches can cause the door to stop halfway. Consult your garage door opener's manual to learn how to adjust the limit switches. Make small adjustments until the door closes fully. Craftsman garage door opening too far and hitting stop bolt easy adjustment (youtube.com)