If you experience a malfunction of your garage door opener, it’s frustrating. Luckily, openers from LiftMaster, Chamberlain, and Craftsman manufactured after 2012 can help you pinpoint the problem using flashing indicator lights. These more recent openers come with the Security+ 2.0 system and MyQTM technology. To make sure this is what you have, there is a round yellow learn button on the back or side of the motor housing.
Some of these door openers also come with the 880LM or 880LMW wall control panel with a large, easy-to-read, multipurpose screen that can display the error code.
Most of the abnormal situations shown in the following table are related to the photo eye reversal system. Either the photo eye units have gone out of alignment from an inadvertent knock, or the wires connecting the garage door opener to the units were cut or poorly installed.
On the garage door opener housing, there are indicator arrows, one pointing up and the other down. Count the number of times these arrows blink and refer to the following table. This will help you identify the cause and make the necessary corrections.
| Number of blinks | Problems | Solutions |
|---|---|---|
| 1 UP ARROW / 1 DOWN ARROW | The opener does not close, and the opener’s lights are flashing. | Photocells (safety sensors) are not installed, not connected, or the wires may be cut. Inspect sensor wires to see if they are disconnected or cut. |
| 1 UP ARROW / 2 DOWN ARROW | The opener does not close, and the opener’s lights are flashing. | Safety sensors’ wires are shorted or reversed. Inspect them and correct if needed. |
| 1 UP ARROW / 3 DOWN ARROW | The door control does not work. | Check the door control wires for a short or a reversed wire. Inspect wires, correct the situation, or replace wires if needed. Door control may also be faulty; replace if needed. |
| 1 UP ARROW / 4 DOWN ARROW | The opener does not close, and the opener’s lights are flashing. | Photocells are misaligned or obstructed. Realign sensor boxes so that the LED lights are steady and not flashing. If there’s an obstruction in the sensors’ path, clear it. |
| 1 UP ARROW / 5 DOWN ARROW | The garage door moves 6 – 8 inches, stops, and reverses. | Open and close the door manually. Check for binding, obstructions, or a broken spring. If equipped with a door lock system, check it. Check wiring connections from the travel module to the logic board. Replace the travel module if necessary. |
| No movement, only a single click. | Open and close the door manually. Check for binding, obstructions, or a broken spring. If equipped with a door lock system, check it. Replace the logic board if necessary. | |
| The opener hums for 1 to 2 seconds without any movement. | Open and close the door manually. Check for binding, obstructions, or a broken spring. If equipped with a door lock system, check it. Contact LiftMaster technical support at 1-800-528-9131 | |
| 1 UP ARROW / 6 DOWN ARROW | The door slides after it has opened and comes to a complete stop. | Reprogram travels to the right position, or have a professional adjust the balance of the garage door. |
| 2 UP ARROW / 1 to 5 DOWN ARROW | No movement or no sound. | The logic board must be replaced. |
| 3 UP ARROW / 2 DOWN ARROW | Unable to set or keep the settings. | Check the travel module for a proper assembly. Replace if needed. |
| 3 UP ARROW / 3 DOWN ARROW | The battery status LED is constantly flashing. | Battery not charging, replace battery and/or logic board. |
| 4 UP ARROW / 1 to 4 DOWN ARROW | The door is moving, stops, and/or reverses for no apparent reason. Opener beeps, and lights flash. | Open and close the door manually. Check for binding or obstructions. If the door is not binding or sticking, reprogram the travel. |
| 4 UP ARROW / 5 DOWN ARROW | The garage door moves approximately 6 – 8 inches, stops, and reverses. | There’s a communication error on the travel module. Check the travel module connections. Replace the module if necessary. |
| 4 UP ARROW / 6 DOWN ARROW | The opener does not close, and the opener’s lights are flashing. | Photocell (safety beams) are misaligned or obstructed. Realign sensor boxes so that the LED lights are steady and not flashing. If there’s an obstruction in the sensors’ path, clear it. |
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