LiftMaster 8550WLB 8550W 8550WL 8550WLB 8550WLB-267 8557W 8587W WLED WLED-267 - Page 15

Maintenance Every Month l Manually operate door. If it is unbalanced or binding, call a trained door systems technician. l Check to be sure door opens and closes fully. Adjust if necessary, page 13. l Test the safety reversal system. Adjust if necessary, page 14. Every Year l Oil door rollers, bearings and hinges. The garage door opener does not require additional lubrication. Do not grease the door tracks. l (If applicable) Test the battery backup and consider replacing the battery to ensure the garage door opener will operate during an electrical power outage. 1. Unplug the garage door opener from AC power. The battery status LED will glow solid orange (opener is operating on battery power) or will flash (low battery power). 2. Open and close the door using the remote control or door control. 3. In battery backup mode, the Automatic Garage Door Lock will unlock when the garage door is opened, and will remain disabled until power is restored. 4. Plug in the garage door opener. Verify the battery status LED is flashing green (battery is charging). Every Two to Three Years l Use a rag to wipe away the existing grease from the garage door opener rail. Reapply a small layer of white lithium grease to the top and underside of the rail surface where the trolley slides. The Remote Control Battery To prevent possible SERIOUS INJURY or DEATH: l NEVER allow small children near batteries. l If battery is swallowed, immediately notify doctor. To reduce risk of fire, explosion or chemical burn: l Replace ONLY with 3V CR2032 coin batteries. l DO NOT recharge, disassemble, heat above 212°F (100°C) or incinerate. Pry open the case first in the middle (1), then at each side (2 and 3) with visor clip. 1 2 Replace with only 3V CR2032 coin cell battery. 3 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 garage door opener beeps: The garage door opener can beep for several reasons: l Garage door opener has been activated through a device or feature such as Timer-to-Close, garage door monitor or LiftMaster Internet Gateway. l Operating on battery power or the battery needs to be replaced. My neighbor's remote control opens my garage door: Erase the memory from your garage door opener and reprogram the remote control(s). The garage door moves 6-8", stops or reverses: l Manually open and close the garage door. Garage door may be binding or there may be an obstruction. If the door is binding, call a trained door systems technician. l Possible travel module failure. My remote control will not activate the garage door: Verify the lock feature is not activated on the door control or reprogram the remote control. The wall-mounted door control will not function: The wires for the door control are shorted or the door control is faulty. 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. Garage door opener hums for 1-2 seconds with no movement: Manually open and close the garage door. Garage door may be binding or there may be an obstruction. If the door is binding, call a trained door systems technician. Cannot connect garage door opener to home Wi-Fi network: Ensure the myQ® Serial number was entered correctly and try again. The myQ® characters are between A-F and 0-9 only. To troubleshoot the optional automatic garage door lock model 841LM, see the instructions provided with it. 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. Troubleshooting Below are basic troubleshooting tips, for additional help and support videos visit support.chamberlain.com or contact your installing dealer. My garage door opener will not close and the light bulbs flash: Check to make sure the LEDs in both sensors are glowing steadily. The LEDs in both sensors will glow steadily if they are aligned and wired correctly. See page 11. 15