Troubleshooting
This guide includes troubleshooting steps for situations that may occur with the LiftMaster MyQ 821LM, 821LMB, or MyQ-G0301-D.
LED indicators
When troubleshooting, take note of the various LEDs on the LiftMaster MyQ Smart Garage Hub.
LED color and state |
MyQ Smart Garage Hub status |
Blue Flashing |
Wi-Fi needs to be set up |
Blue and Green Flashing |
No router communication |
Blue Solid |
Wi-Fi setup active |
Green Flashing |
Communicating with router |
Green and Yellow Flashing |
Programming mode |
Green Solid |
Wi-Fi connected |
The door sensor unable to program into the Wi-Fi Hub
- Press the Test button on the door sensor. The Yellow LED on the door sensor blinks. If the door sensor is connected to the Wi-Fi Hub, the Wi-Fi Hub beeps once or twice to indicate the slot number the sensor is associated with .
- If the Yellow LED on the door sensor does not blink, replace the 3 volt CR2450 Lithium battery.
- If replacing the battery does not resolve the behavior, the door sensor may need to be replaced.
- If the Yellow LED blinks on the door sensor but continues to be unable to program into the Wi-Fi Hub, verify the Wi-Fi Hub slot is available to enroll a door sensor.
- To clear the door sensor slot on the Wi-Fi Hub, press and hold the 1 or 2 button on the Wi-Fi Hub that is connected to the door sensor until the Yellow LED turns off.
Note : If there is already a successful garage door sensor enrolled on the Wi-Fi Hub, verify that door sensor’s slot number by pressing its Test button before clearing the slots. Do not clear the successful door sensor’s slot number.
- If the LED on the door sensor is Red, it is incompatible with the 821LM due to its use of Bluetooth communication and should only be programmed into the 821LMB or MyQ-G0301-D.
Important : LiftMaster MyQ Smart Garage Hubs are only compatible with door sensors from their own generation.
The Wi-Fi Hub is not connecting to the internet
- Verify there is sufficient Wi-Fi signal in the garage.
- The thickness and number of walls, doors or other barriers between the router and garage can affect signal strength.
- The Wi-Fi Hub’s average range is about 50-100 feet from the Wi-Fi router.
- To test if the Wi-Fi Hub should work, take a smartphone into the garage and turn on Wi-Fi to verify Wi-Fi signal is sufficient.
- MyQ® Garage performance is best if the smartphone shows two or more bars, however, the MyQ® Garage should perform properly with one bar as well.
- Try connecting the Wi-Fi Hub to the internet from the same room as the router. Then move the Wi-Fi Hub back to the garage to determine if the Wi-Fi Hub keeps a solid connection. The Green LED is solid to indicate it has an internet connection.
- If a solid connection cannot be maintained, use a Wi-Fi range extender to boost signal strength in the garage. Wi-Fi range extenders are readily available at most consumer electronics stores.
The Wi-Fi Hub is not registering
Verify is the Wi-Fi Hub is associated with the Liftmaster’s MyQ® Garage app. Each Wi-Fi Hub can only be associated with one account. If the Wi-Fi Hub is connected to a LiftMaster account, delete the Wi-Fi Hub from the LiftMaster account.
To remove the Wi-Fi Hub from a LiftMaster account:
- Log into the LiftMaster MyQ website at https://www.myliftmaster.com/Login.aspx.
- In the My Places & Devices section, click the Settings icon.
- Click to select the desired Place (Wi-Fi Hub) to remove.
- In Devices , click the trash can icon for the garage doors to remove from the LiftMaster account.
- In Places , click the trash can icon for the Wi-Fi Hub (gateway) to remove from the LiftMaster account.
- On the LiftMaster dashboard, confirm that the gateway no longer appears in My Places & Devices .
- Wait about ten minutes, then actuate the garage door wall control two times.
- Next, try re-registering the Wi-Fi Hub (gateway) on Alarm.com’s website.
The 821LM is not operating the garage door opener
Verify the garage door opener is compatible via the information above. If the garage door is compatible, try to manually program the 821LM with the garage door.
Important : The following troubleshooting steps only apply to the 821LM. The 821LMB cannot be manually programmed using these steps.
To program the door sensor to the 821LM:
- Press and release the [1] button for door sensor 1 or [2] button for door sensor 2 on the 821LM. The yellow LED turns solid to indicate it’s active.
- Press and release the Test button on the door sensor until the 821LM beeps and the light flashes.
- The yellow LED on the 821LM turns off.
- The hub beeps once if the door sensor was programmed into slot 1. The hub beeps twice if the door sensor was programmed into slot 2. This helps identify which slot a door sensor is programmed to determine if the 1 or 2 button needs to be pressed for programming the garage door opener to the 821LM.
Note : Once a sensor is enrolled to a slot, press the test button on the tilt sensor at any time to identify which slot it belongs to based on if it beeps once for slot 1 or twice for slot 2.
To program the garage door opener to the 821LM:
Important : Use the results from programming the door sensor to the 821LM to determine if the 1 or 2 button needs to be pressed to program the garage door opener.
- Press and release the Gear Button (Settings), the Blue LED turns on solid.
- Press and hold the Gear Button again until the Green and Yellow LEDs alternate blinking.
- Press and release theGear Button again, the Yellow LED turns on solid.
- Depending on which slot the garage door opener is being programmed into, press and release the [1] or [2] button the number of times indicated in the following chart. Then the Yellow LED turns on solid.
- Press and release the Gear Button. The Yellow and Green LEDs blink.
- Press and release the Learn button on the garage door opener.
- Depending on which slot the garage door opener is being programmed into, press and release the [1] or [ 2] button until the garage door opener clicks.
- Depending on which slot the garage door opener is being programmed into, press and release the [1] or [ 2] button again to activate the garage door opener.
- If the garage door opener does not activate, press and release the Gear Button , then repeat steps 3-8.
- Once the garage door activates, exit programming mode. To exit programming mode, press and hold the Gear Button until either the Blue LED blinks if Wi-Fi is not set up, or the Green LED turns on if Wi-Fi has already been connected.
Door Sensor reports status Unknown or Malfunction
If the door sensor reports an Unknown or Malfunction status, try the following steps to restore communication.
Note : The default status of the door sensor when it’s first enrolled is Unknown .
Locally open and close the garage door
Open and close the garage door using the opener’s wall control. A manual update of the garage door’s status can clear the malfunction and restore communication.
Verify the garage door opener is within communication range
The Wi-Fi hub should be installed on the ceiling in the garage where the garage door opener is located. The Hub should also be within 30 feet open air of the door sensor that is installed on the garage door.
Test the door sensor battery
Test the door sensor to verify the device is receiving power by pressing the door sensor’s Test button. The Yellow LED on the door sensor blinks, and the Wi-Fi Hub beeps once or twice to indicate the slot number the sensor is associated with.
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If the Yellow LED on the door sensor does not blink, replace the 3 volt CR2450 Lithium battery
- Once new battery is put in the door sensor, the garage door sensor should come back online. The garage door may need to be opened/closed using the garage door opener’s wall control for a manual update of the garage door’s status to restore communication.
- If Yellow LED still does not blink after replacing with good batteries, the door sensor may need to be replaced.
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If the Yellow LED blinks on the door sensor but the Wi-Fi Hub does not beep once or twice, the door sensor is not connected to the Wi-Fi Hub. It is recommended to remove the door and relearn it into the Wi-Fi Hub.
Additional information:
The MyQ Garage Door Tilt Sensor uses a 3 volt CR2450 Lithium battery.
The 821LM is not able to measure the current battery voltage of battery life of the tilt sensor. Battery level is actually measured by the 821LM as the number of cycles (up and down) that the sensor has transmitted since it was first learned into a MyQ Universal hub.
- The MyQ Garage Door Tilt Sensor will report low battery at 7,000 cycles.
- The MyQ Garage Door Tilt Sensor will typically stop functioning due to battery depletion after about 10,000 cycles.
- While not documented, LiftMaster support has stated that the sensor can become less reliable in temperatures below 20° F.