Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Welcome. My name is ***** ***** would be glad to assist.
Please provide some more detail on the situation.
1. By manually, you mean you disconnect the door from the trolley and move it by hand, correct??
2. How do you get it closed to see if it only moves 5-10"?
If it is open and only moves 5-10", how does one verify that when closed it only works the same amount?
3. Are you trying to set a keypad to operate 2 doors? Or is this a hand held remote for 2 doors?
4. Does the wall control operate the door properly?
Let me know and we can continue
Based on the information, it appears the RPM sensor is no longer operating.
It mounts on the rear of the motor and watches for rotation.
When the motor runs and the door moves, the sensor normally allows to continue, but in yours, it is stopping the operation because it does not sense the motor movement.
It is a small board on the rear, if you open the covers and inspect the drive assembly.
Maybe it is just loose or the wires became disconnected.
Otherwise a new sensor is necessary.
Very good, keep me posted and we can continue as necessary