TroubleshootingDIAGNOSTIC CHARTYour garage door opener is programmed with self-diagnostic capabilities. The UP and DOWN arrows on the garage door opener flashthe diagnostic codes.UP ARROWFLASH(ES)DOWN ARROWFLASH(ES)SYMPTOM SOLUTION1 1 The garage door opener will notclose and the light bulbs flash.Safety sensors are not installed, connected, or wires may becut. Inspect sensor wires for a disconnected or cut wire.1 2 The garage door opener will notclose and the light bulbs flash.There is a short or reversed wire for the safety sensors. Inspectsafety sensor wire at all staple and connection points, replacewire or correct as needed.1 3 The door control will notfunction.The wires for the door control are shorted or the door control isfaulty. Inspect door control wires at all staple and connectionpoints, replace wire or correct as needed.1 4 The garage door opener will notclose and the light bulbs flash.Safety sensors are misaligned or were momentarily obstructed.Realign both sensors to ensure both LEDs are steady and notflickering. Make sure nothing is hanging or mounted on thedoor that would interrupt the sensor’s path while closing.1 5 Door moves 6-8" (15-20 cm)stops or reverses.Manually open and close the door. Check for binding orobstructions, such as a broken spring or door lock, correct asneeded. Check wiring connections at travel module and at thelogic board. Replace travel module if necessary.No movement, only a singleclick.Manually open and close the door. Check for binding orobstructions, such as a broken spring or door lock, correct asneeded. Replace logic board if necessary.Opener hums for 1-2 seconds nomovement.Manually open and close the door. Check for binding orobstructions, such as a broken spring or door lock, correct asneeded. Replace motor if necessary.1 6 Door coasts after it has come to acomplete stop.Program travel to coasting position or have door balanced by atrained door systems technician.2 1-5 No movement, or sound. Replace logic board.3 2 Unable to set the travel or retainposition.Check travel module for proper assembly, replace if necessary.4 1-4 Door is moving stops or reverses. Manually open and close the door. Check for binding orobstructions, such as a broken spring or door lock, correct asneeded. If the door is binding or sticking contact a trained doorsystems technician. If door is not binding or sticking attempt toreprogram travel (refer to page 28).35