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Error Codes For LiftMaster, Genie and Access Master Openers

Garage Door Opener Error Codes

 

Your garage door opener is a mechanical motor that lifts and closes your garage door. Like all things mechanical, they can malfunction. That includes the top common brands LiftMaster, Chamberlain, Genie, and Access Master. When this happens, it can cause a lot of frustration because it can trap your vehicle in or out of the garage. The good thing is each one of these gives error codes on the model to give you an idea of what is wrong with them and how to fix them. We have compiled a list of error codes for LiftMaster/Chamberlain Genie, and Access Master so you will have a reference guide as to what could possibly be wrong with your garage door opener, and what can be done to fix the issue.  

Error Codes For LiftMaster, Genie, and Access Master Openers

Genie Garage Door Opener Error Codes

Genie chain and belt drive garage door openers flash the red or green LED lights next to the Learn button to signal error codes. Here are the error codes and what they mean.

Red LED blinks once, pauses, and repeats: This means a remote device transmitter has not been programmed.

  • What should you do: Program the remote device following the instructions in your owner’s manual.

 

Green LED blinks once, pauses, and repeats: Obstruction between the sensors, door is binding or door travel limit needs programming.

  • What should you do: Remove any obstruction between the safety reversing sensors. Pull the emergency door release and check the up-and-down travel of the garage door for binding. Repair the garage door if it doesn’t travel smoothly. Program the door travel limits following the instructions in the owner’s manual.

 

Green LED blinks twice, pauses, and repeats: Continuous obstruction between the sensors, sensors are out of alignment, bad wiring connections on the power head, or door travel limit needs programming.

  • What you should do: Remove any obstruction between the safety reversing sensors. Realign the safety reversing sensors if askew. Unplug the garage door opener and reconnect any loose wires on the power head. Program the door travel limits following the instructions in the owner’s manual.

 

Green LED blinks 3 times, pauses, and repeats: Travel limits are backward.

  • What you should do: Clear and reprogram the travel limits following the instructions in your owner’s manual.

 

Green LED blinks 4 times, pauses, and repeats: The wall control wires are reversed on the power head or the wall control wires are shorted

  • What you should do: Reverse the wall control wires on the power head if improperly connected. Unplug the garage door opener and replace the wires for the wall control if damaged. If the wires are okay, replace the wall control.

 

Green LED blinks 5 times, pauses, and repeats: Chain/belt is too tight or control system failure.

  • What you should do: Adjust the chain/belt tension following the instructions in your owner’s manual. Replace the control board assembly if the chain/belt tension is okay.

LiftMaster and Chamberlain Opener Codes

LiftMaster and Chamberlain are two of the most popular brands of garage door openers, known for their reliability and advanced features. However, like any mechanical system, they can encounter issues. Both brands use diagnostic error codes to help identify what’s wrong. Here are some of the most common error codes you might encounter with LiftMaster and Chamberlain garage door openers and suggestions on what to do for each.

1 Flash / Blink: Safety sensors are not installed, or connected, or wires may be cut.

  • What you should do: Inspect the sensors and their wiring. Ensure they are properly installed, and aligned, and there are no obstructions between them. Check for any cut or damaged wires.

 

2 Flashes / Blinks: The sensors are installed but the wires are shorted or the black and white wires are reversed.

  • What You Should Do: Check the wiring connections for any shorts. Make sure the black and white wires are connected in the correct order.

 

3 Flashes / Blinks: Door control or wire shorted.

  • What You Should Do: Inspect the door control wiring for any shorts or damage. Replace the wires if necessary and ensure the door control is properly connected.

 

4 Flashes / Blinks: Safety sensors are slightly misaligned (still within limits) or there is an obstruction.

  • What Should You Do: Realign the safety sensors to ensure they point directly at one another. Check for and remove any obstructions that might block the sensors’ beam.

 

5 Flashes / Blinks: Motor overheated or possible RPM sensor failure.

  • What Should You Do: Wait for the motor to cool down before attempting to operate the garage door again. If the problem persists, the RPM sensor may need replacement.

 

6 Flashes / Blinks: The motor circuit has failed.

  • What Should You Do: This usually requires professional service. Contact a certified technician to inspect and possibly replace the motor or the motor control board.

 

1-5 Flashes / Blinks: This sequence indicates specific issues in newer models, such as overexerted force detected or a stuck door.

  • What Should You Do: Check for any obstructions or binding issues that may prevent the door from moving freely. Adjust the force settings according to the manufacturer’s instructions if necessary.

 

4-6 Flashes / Blinks: This code typically indicates that the garage door opener is experiencing issues related to the travel module or that the travel settings are not programmed correctly.

  • What Should You Do: The recommended approach is to attempt to reprogram the travel settings according to the manufacturer’s instructions. This involves setting the position at which the door should stop when it is fully closed and fully open. If reprogramming the travel does not resolve the issue, it could indicate a failure of the travel module itself, which might require replacement.

 

For this specific error code, and any issue related to programming or internal components, referring to the user manual is crucial, as it will provide detailed instructions tailored to your specific model. If reprogramming the travel settings does not resolve the issue, or if you’re uncomfortable performing these steps, contacting professional support is advisable. Manufacturers like LiftMaster and Chamberlain have customer service lines and networks of professional technicians who can provide diagnostics and repairs, ensuring your garage door opener functions safely and effectively.

Access Master Garage Door Opener Error codes

1 Flash / Blink: Safety sensors are not installed, or connected, or there are wires cut.

  • What Should You Do: Check the installation and wiring of the safety sensors. Ensure no obstructions exist between them and that wires are intact.

2 Flashes / Blinks: Safety sensor wires are shorted or the polarity is reversed.

  • What Should You Do: Inspect the sensor wires for shorts and verify they are connected correctly.

3 Flashes / Blinks: The door control or its wiring is shorted.

  • What Should You Do: Check the door control and wiring for any shorts. Replace damaged wires or the control as necessary.

4 Flashes / Blinks: Safety sensors are misaligned or obstructed.

  • What Should You Do: Realignment of the safety sensors is required, or removal of any obstruction blocking their line of sight.

5 Flashes / Blinks: Motor overheated or RPM sensor failure.

  • What Should You Do: Allow the motor to cool down. If the problem persists, check the RPM sensor which might need replacement.

6 Flashes / Blinks: Motor circuit failure.

  • What Should You Do: This typically requires professional assessment and potentially replacing the motor or circuit board.

Conclusion 

We hope this comprehensive list of error codes list helps you to diagnose your garage door opener issue. If you can’t find the source of your opener’s malfunction, or just simply don’t have the time, Stateline Garage Door LLC has been repairing garage door openers in the Athens and Huntsville AL area since 2000. All our repair technicians have years of in-the-field experience and help you get your garage door running smoothly again.