Hi my chamberlain whisper plus garage door beeps every 30 seconds and on the wall unit it says bad battery replace the battery. is it the battery on the egine unit or is there battery on the wall unit too? because now i lost power on my wall unit there is no light no words on it but the door opens and closes by handheld unit(beeping continues though). thanks

as long as garage door is powered(plugged into outlet), then with a removed battery backup or a bad backup battery, the unit will beep to alert you to the issue. replace the backup battery with a new/good one.

This manual may help. Check the troubleshooting section.
http://www.chamberlain.com/CatalogResourcesV3/en-us/shared/files/tucmanuals/114A4242.pdf

After making sure you have power and still won't do anything you have a blown circuit board.

Change battery , not change battery the unit will not operate if there is a power failure.backup operation. 5 years is a long time on a disposable battery.

This sounds like the unit may be running on its battery and the battery is running low. Is the orange light also blinking? (The LED is on the side near the worklight so it's easiest to check if the light is off.) First check if the power is on to the house and then to the garage area. Next check if the garage door opener is plugged into the outlet. Make sure that the battery is properly connected to the wiring harness (and the opposite side of the harness is fully seated as well).

If the LED is red and the unit is beeping, then replace the battery for the opener. The battery kit is part 41A6357-1 for the WD962KD Chamberlain Evercharge model. The Chamberlain 4228 is a substitute battery kit and is available at Amazon and other vendors. It is a little harder to put in the opener (and then remove later).

If a new battery doesn't solve the problem (after 48 hours of charging), then the opener's recharging circuitry has failed and can't recharge any battery. Depending on the age of the opener, you may be better off replacing the entire unit.

The manual for the WD962KD opener is available from Chamberlain here: http://www.chamberlain.com/doityourself/pdfdocs/114A4249.pdf .

Please add a comment with your garage door opener model or check your manual to get the correct battery for your opener.

I hope this helps.

Cindy Wells

On the back of the garage door opener there is a red button. Depress this button and sync your keypad to the opener. This will re-establish the code and reset the remote.

Replace the battery.

We have a Chamberlain Whisper Drive Plus. The keyless entry stopped working, suddenly. I have changed the battery, not the problem. I cannot get it to work, and cannot get it to reprogram. The keypad lights up when buttons are pressed, but when I press "Enter" the whole keypad flashes for about 30 seconds and then just goes dark.

My battery is bad. I knew it, but did not feel like it was worth any of my attention. The beeping started yesterday and this was worth my attention. Everyone in the family complained. I suspected it was the battery.

I unplugged the unit. Disconnected the battery. Waited for 30 seconds. Plugged it back in. It works fine and no beeping.

I suspect it is a warning to replace the battery.