LiftMaster 8580WLB Owners Manual - Page 43

Troubleshooting DIAGNOSTIC CODE SYMPTOM Up Arrow Flash Down Arrow Flash (es) (es) 4 1-4 Door is moving stops or reverses. 4 5 Opener runs approximately 6-8" (15-20 cm), stops and reverses. 4 6 The garage door opener will not close and the light bulbs flash. SOLUTION 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 29). Communication error to travel module. Check travel module connections, replace travel module if necessary. Safety reversing sensors are misaligned or were momentarily obstructed. Realign both sensors to ensure both 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. The garage door opener will NOT enter Wi-Fi LEARN mode: l After the initial installation of the garage door opener, the garage door opener must complete a full cycle (open and closed) before the Wi-Fi LEARN mode can be activated. l If there has been a recent power outage, the garage door opener must complete a full cycle before the Wi-Fi LEARN mode can be activated. See 35 to activate Wi-Fi LEARN mode. Cannot connect garage door opener to home Wi-Fi network: l Ensure the myQ® Serial number was entered correctly and try again. The myQ® characters are between A-F and 0-9 only. l Weak Wi-Fi signal in the garage. Ensure the Wi-Fi signal is reaching the garage, see 4 or visit LiftMaster.com/Customer-Support for more information. My door will not close and the lights blink on my motor unit: The safety reversing sensor must be connected and aligned correctly before the garage door opener will move in the down direction. l Verify the safety reversing sensors are properly installed, aligned and free of any obstructions. My garage door opener light(s) will not turn off when the door is open: The garage door opener is equipped with a feature that turns the light on when the safety reversing sensors have been obstructed or when the motion sensor on the door control detects movement in the garage. This feature can be disabled using the door control, see page 38. LEDs are not working (Models WLED and WLED-267 only): Check wiring on both LED Pods to connector. If loose, then reconnect. If lights do not turn on, an LED driver board may be needed. Connect customer service or certified door professional to determine if a new LED driver board or LED array is needed. My neighbor's remote control opens my garage door: Erase the memory from your garage door opener and reprogram the remote control(s). My vehicle's Homelink® is not programming to my garage door opener: Depending on the make, model, and year of your vehicle an external adapter may be required. Visit www.homelink.com for additional information. My camera won't connect to the router: l Move your router closer to the garage door opener to minimize interference from walls and other objects. l Buy a Wi-Fi range extender. For issues with the camera, press and hold the reset button on the camera for 10 seconds. Then, follow the myQ® app instructions to set up the camera. To troubleshoot the optional automatic garage door lock model 841LM, see the instructions provided with it. 43