My solution to myq app can open door but can't close the door. It's a light bulb interference

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I have a chamberlain myq wall panel model 041A7928-3 and chamberlain myq gateway.  They both works perfect until the wall panel makes triple beep sound during hot summer days.  Turns out, after talking the tech, it has a defective parts and makes this noise when the garage temperature is above 90 degree.  They send me a new Liftmaster model 888LM . This wall panel doesn't play well with my Chamberlain gateway.  I can open the door, but it refuse to close, after the warning tone.  I have talked to the first tech support and after an hour of trouble shooting, she decided to send me another unit.  The second unit does the same thing.  Called the tech again, reset the garage opener, reset the gateway, and same problem.  I didn't give up and trouble shoot myself.  Turns out, if I remove one of the LED light bulb from the garage opener, the door starts to respond and closes.  Only one of the bulb is causing this issue.  My old panel didn't have this problem at all.   Just want to write this article so that in case someone runs into the same problem.  This applies to old chamberlain gateway with new Liftmaster wall panel.  I don't if replacing a new Liftmaster gateway would soft the LED interference issue.  Will give it a try soon.  
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Van Lam

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Posted 2 months ago

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Pm

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Thank you for sharing this. Hopefully this will save somebody some valuable time. Btw, you mentioned "I removed one of the LED light bulb from the garage opener". Which one did you remove? A picture would be great. And did you have to remove it with a soldering iron? Do you know if the LED is still working or was it maybe defective? Also just because I am curious, how did you determine that removing an LED could make the unit work again?
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Mike

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My door opener is a belt driven Whisper Drive belt that is 19 years old. In about 2013 I replaced the standard bulbs with LED bulbs to save energy. Right away the door would not respond to any of my remotes. I could only operate the door from the inside garage wall plate. Since everything worked just fine before I changed the bulbs I figured the LED bulbs were causing some kind of interference and thus blocking the remote signals. I replaced the bulbs with the standard bulbs and everything worked again. Fast forward to 2018 and just a month ago, I replaced the standard bulbs again with LED bulbs hoping that 2018 technology would solve the problem and low and behold, everything worked. Go figure!
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Michael Parker

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Certain LED’s can emit RF signals that interfere with remotes. Try a different brand until you find ones that work, I’m using two soft white Philips LED’s (not the hue ones). No issues with my remotes for my WD1000WFC model
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Pm

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Ah, you are referring to the ceiling lights. I thought you are taking about the 3mm(?) LEDs on the remote. I don't use the included ceiling light so I don't have experience with it. So based on your post it seems the light has two bulbs and when one of them is replaced with a certain LED bulb then things stop working. It's true that LEDs can introduce some interference because they work by switching power on/off rapidly (which causes some interference). I am still somewhat surprised about the effect because it seems you are using a WIRED wall switch. 

Can you reproduce the issue by inserting the LED bulb and then fix it by inserting the incandescent bulb? What about if you use a good (dimmable) light bulb? Also do you see some unusual behavior of the LED bulb like flickering? 
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Van Lam

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I tried both bulb out and that fix the issue. Then I put one bulb back on, no issue, then second one on, issue appeared. Remove the suspect one, problem went away. Put it back on, cause issue. It's one of those flat round type led bulb. I haven't try standard non led since I dont have those bulbs anymore. I did tried different brand, it doesnt light at all. I know I saw at Home Depot they sell bulbs that indicate no interference. The funny thing is, I have absolutely no other issue beside the one I described.
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Pm

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Good troubleshooting!!! Thanks for that feedback.