User Manual - Page 45

For 84504RMC. Also, The document are for others LiftMaster models: 87504-267, 84504R*, 84505R, 87802, 84602

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45
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4 1-4 Door is moving, stops or reverses. Opener beeps and lights flash. 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 32).
4 5 Opener runs approximately 6-8" (15-20 cm), stops and reverses. Communication error to travel module. Check travel module connections, replace travel module if necessary.
4 6 The garage door opener will not close. 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.
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.
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.
Ensure the myQ® Serial number was entered correctly and try again. The myQ® characters are between A-
F and 0-9 only.
Weak Wi-Fi® signal in the garage. Ensure the Wi-Fi® signal is reaching the garage. Visit
support.chamberlaingroup.com for more information.
The safety reversing sensor must be connected and aligned correctly before the garage door opener will move
in the down direction.
Check for binding or obstructions anywhere along the track to garage floor.
The safety reversing sensor must be connected and aligned correctly before the garage door opener will
move in the down direction.
Verify the safety reversing sensors are properly installed, aligned and free of any obstructions.
If the receiving sensor (green LED) faces direct sunlight, switch the receiving sensor with the sending
sensor so the receiving sensor is not in direct sunlight.
Check wiring on both Integrated LED Light Modules to connector. If loose, then reconnect. If the lights do not
turn on, a new Integrated LED Light Module may be needed. Connect customer service or certified door
professional to determine if a new Integrated LED Light Module is needed.
Erase the memory from your garage door opener and reprogram the remote control(s).
Depending on the make, model, and year of your vehicle an external adapter may be required. Visit
www.homelink.com for additional information.
Move your router closer to the garage door opener to minimize interference from walls and other objects.
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
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