It could also be a problem with the logic control board of the opener but it is more likely to be the rpm sensor and given the cost of a logic board your best option would be to try replacing the rpm sensor first.
Rpm sensor problem garage door.
As suggested by the manual i purchased this sensor and replaced the old one.
This is something to consider if you decide.
The rpm sensor detects motor speed.
The door only moves 6 to 8 inches and then stops when the logic board isn t receiving speed signals.
If you cover all the other options then the sensor may have failed.
Skylink gs mt skylink wireless garage door sensor for skylinknet connected home alarm security and home automation system and m series.
If the rpm sensor breaks the garage door only moves 6 to 8 inches at a time and the led light flashes 5 times.
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The logic board shuts off the motor and flashes the learn light 5 times when it doesn t receive speed signals from the rpm sensor.
The latest garage door sensors are technologically advanced and even allow you to control the opening and closing through an app on your smartphone.
Replace the rpm sensor with the manufacturer approved replacement part.
The rpm sensor monitors motor shaft rotation and sends speed signals to the logic board.
Cycle the garage door through the opening and closing actions using the control on the garage wall.
How to replace a chain drive garage door opener rpm sensor liftmaster rpm sensor you replacing the rpm sensor on a garage door opener you how to replace a chain drive garage door opener rpm sensor.
The error code indicated that the rpm sensor was causing the problem of autoreversing of the garage door.
This basic procedure works for common craftsman liftmaster and chamberlain garage door openers.