Did it short out? The app isn't working either suddenly. It indicates door was closed despite it being open. Did the wall unit fry?
It's an 888lm
Lastly, can I get a new wall controller with motion sensor and use my original internet gateway? Sad
Same problem - came home to find the garage door open. No lights on 888LM wall unit. However all wireless units work fine. It's about 8 years old.
Here's a clue: a car accident down the street, took out a power pole. My power was out for about 20 minutes. No other electronics were damaged in the house.
Assuming I need to replace the 888LM.
Why would this event have caused the door to open? I can accept that the power problem fried the wall unit (maybe a power surge during the accident?) but it would be best if it did not open the door. Security issue!
I just had the same issue. It corrected itself 2 days ago, and now the same thing happened today while I was at work. Door opened, no power to panel. Terrible for security. I called and was told the capacitors are known to fail in 888LM, and that you have to buy a new one. Why isn't the company covering this issue and replacing faulty units for customers that have the problem?!! Liftmaster / Chamberlain really should take responsibility for this known defect and make customers whole.