Question about Garage Doors
My 1/2 HP Model 139.53641SRT opener clicks to all my remotes open button (I have no wall mount) but the motor does not move. The LED next to the green "Learn" button blinks 5 times and pauses for 2 seconds continuously after I hit the open/close button on my 3 button remote model 139.53779 (LED does not blink right after I re-plug in AC power). http://ths.gardenweb.com/forums/load/garages/msg012015459574.html indicates a 5 blinks is a diagnostic for ""RPM sensor or motor overload".
I verified obstruction sensor works and aligned. I also opened the opener housing and verified the motor gear to be fine. Is there anyway to checkout the motor and the RPM sensor?
(Right before the opener stops working, I open the garage door and accidentally hit a button on the 3 button remote that I normally don't use to close it about 5 minutes later and the opener started to act that way. I tried holding the same button for 2 seconds just in case that is the "locked" button for vacation and the opener still behaves the same. I wanted to make sure that I did not accidentally lock up the opener by hitting a wrong button on my remote and end up replacing the opener if someone out there can tell me how to unlock it. I have no owner manual because the opener and remotes came with the house.)
Thanks for your help.
I also replaced the gear drive on my 41A-5021-E 1/2 HP LiftMaster Garage Door Opener.
After following instructions carefully, the door moves about 3 inches and reverses same. The chain not yet installed so not related to any door problems (binding, etc.).
I have also centered the position (up and down travel limit) switch so not related to where it is at.
Makes no difference using wall switch or remotes.
Both sensors 'see' each other and are glowing brightly. I put something in their way and the lights blink properly, so appears not to be sensor related.
If I unplug the unit and let it set for a few minutes and plug it back in, the green led next to the 'learn' button is off, but upon attempting to open the door with either wall switch or remote, the led blinks 5 times, waits 2-3 seconds and repeats. Unplug and replug and same thing happens.
Is the '5 Blink Led' a 'trouble' code?
Just fixed this problem tonight. Had the 5 blink/flash thing. Opened it up and saw that the motor wasn't spinning so it wasn't a bad rpm sensor. Jumped the red to black and then the blue to black to verify motor worked. At that point assumed it was the logic board not telling the motor to start, but I could hear the click of the relay. Pulled the logic board out and noticed a solder joint that had failed directly behind one of the relays. Resoldered that joint and the garage door opener worked again like a dream. Hope that helps someone else.
Posted on Apr 12, 2010
Five flashes indicate motor overheated or RPM sensor Failure. Replace the RPM sensor. If you turned the lock on the green light inside the wall button will be flashing. The wall button still works when the lock is turned on. The lock only turns off remote access. I doubt that the lock is an issue. Here is a link to a liftmaster owners manual http://www.liftmaster.com/consumerweb/pdfdocs/114A3181.pdf
Posted on Mar 01, 2009
My door would not close and there was just a clicking sound when using the remote or the door button. I unplugged the unit, checked everything everyone posted as solutions. Had 5 blinking green lights from the unit. I replaced the cog in the unit 3 years ago and probably put on too much grease. What worked this time was using a tooth brush and cleared some excess grease off the circuit board. Unplugged and plugged again and it worked. Hope this helps.
Posted on Apr 25, 2013
Same issue, however I found the end bracket for the screw track to be loose; over torquing the motor. Remounted it, reset the fault by unplugging the unit. and all OK
Posted on Feb 27, 2013
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