LiftMaster 8010 8010 Owner s Manual - Page 32

Troubleshooting Diagnostic Chart Your garage door opener is programmed with self-diagnostic capabilities. The UP and DOWN arrows on the garage door opener flash the diagnostic codes. NOTE: For troubleshooting questions, please visit LiftMaster.com. DIAGNOSTIC CODE Up Arrow Down Arrow Flash(es) Flash(es) SYMPTOM SOLUTION 1 1 The garage door opener will not close and the light Safety sensors are not installed, connected, or wires may be cut. Inspect sensor wires for a bulbs flash. disconnected or cut wire. 1 2 The garage door opener will not close and the light There is a short or reversed wire for the safety sensors. Inspect safety sensor wire at all staple and bulbs flash. connection points, replace wire or correct as needed. 1 3 The door control will not function. The wires for the door control are shorted or the door control is faulty. Inspect door control wires at all staple and connection points, replace wire or correct as needed. 1 4 The garage door opener will not close and the light Safety sensors are misaligned or were momentarily obstructed. Realign both sensors to ensure both bulbs flash. LEDs are steady and not flickering. Make sure nothing is hanging or mounted on the door 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 or obstructions, such as a broken spring or door lock, correct as needed. Check wiring connections at travel module and at the logic board. Replace travel module if necessary. No movement, only a single click. Manually open and close the door. Check for binding or obstructions, such as a broken spring or door lock, correct as needed. Replace logic board if necessary. Opener hums for 1-2 seconds no movement. Manually open and close the door. Check for binding or obstructions, such as a broken spring or door lock, correct as needed. Replace motor if necessary. 1 6 Door coasts after it has come to a complete stop. Program travel to coasting position or have door balanced by a trained door systems technician. 2 1-5 No movement, or sound. Replace logic board. 3 2 Unable to set the travel or retain position. 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 or obstructions, such as a broken spring or door lock, correct as needed. If the door is binding or sticking contact a trained door systems technician. If door is not binding or sticking attempt to reprogram travel (refer to page 25). 4 5 Opener runs approximately 6-8" (15-20 cm), stops Communication error to travel module. Check travel module connections, replace travel module if and reverses. necessary. 4 6 The garage door opener will not close and the light Safety sensors are misaligned or were momentarily obstructed. Realign both sensors to ensure both bulbs flash. LEDs are steady and not flickering. Make sure nothing is hanging or mounted on the door that would interrupt the sensor's path while closing. 32