RPM Reversal Diagnostic Error on Liftmaster LYN40024

[Guest]

I have been getting the diagnostic error "RPM Reserval" all the time and i do not know how to rectify this problem. The gate will not close or open properly. I have tried resetting the limits many times and the gates will bounce back after it has been opend or closed.

[Mark]

Does the setup allow you to set the limits by holding the direction buttons or does it move a few inches then stop during the limit setup ? If it does then RPM sensor is gone in the motor most likely due to wires being shorted. If Not then most likely brackets are incorrect and arm has strained the gears inside causing it to fight against itself.

[Guest]

Does the setup allow you to set the limits by holding the direction buttons or does it move a few inches then stop during the limit setup ? If it does then RPM sensor is gone in the motor most likely due to wires being shorted. If Not then most likely brackets are incorrect and arm has strained the gears inside causing it to fight against itself.

The setup allow me to set the limits by holding the direction buttons with no problem and the limits are set propoerly. However, after saving, either on closing or opening the gate will not stop and bounce back and give the RPM reversal error. Sometimes after trying a few times, the limits will not be set and i have to disconnect the system for a good number of hours and try it again, then the limit will be set but the gate will not work properly. Please advise what else i can do.

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Mark, the setup allow me to set the limits by holding the direction buttons with no problem and the limits are set properly. However, after saving, either on closing or opening the gate will not stop and bounce back and give the RPM reversal error. Sometimes after trying a few times, the limits will not be set at all and i have to disconnect the system for a good number of hours and try it again, then the limit will be set but the gate will still not work properly and both closing and opening speed get very slow. What i am doing currently until i can resolve this problem is to manually stop the gate with the remote before it reaches the limit. In addition, does the arm needs to be oiled or greased? Please advise what else i can do.

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Mark, the setup allow me to set the limits by holding the direction buttons with no problem and the limits are set properly. However, after saving, either on closing or opening the gate will not stop and bounce back and give the RPM reversal error. Sometimes after trying a few times, the limits will not be set at all and i have to disconnect the system for a good number of hours and try it again, then the limit will be set but the gate will still not work properly and both closing and opening speed get very slow. What i am doing currently until i can resolve this problem is to manually stop the gate with the remote before it reaches the limit. In addition, does the arm needs to be oiled or greased? Please advise what else i can do.