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How to fix CRAFTSMAN Garage Door Opener Problems

A collage of different types of garage door sensor.

Comfort has taken over our lives, and the Craftsman garage door opener makes accessing your garage a pleasurable experience. An automated garage door gives more than just comfort; it provides safety and security. With comfort and security as the main reason to own a craftsman garage door opener, ensuring it is in good working order is important.

Craftsman garage door openers sometimes have problems. Here are some Craftsman garage door opener problems and their solutions:

1. Garage door won’t close (sensor problem)

2. Garage door won’t open (faulty remote)

3. Garage door opener faulty (wall control)

4. Garage door not moving

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1. Garage Door Won’t Close (Sensor Problem)

An old sensor installed on a garage door.

If your garage motor lights flash and the door does not close, count how many times the garage door light flashes. Ten flashes mean the problem is most likely the safety sensors.


If there is anything that blocks the sensor, you must remove it. Anything that obstructs the sensor can cause the garage door not to close. One of the big obstruction problems is spider webs and dirt on the sensor.

The Craftsman garage door opener uses a send-and-receive sensor. An accidental bump could have offset the alignment of these sensors. Using the sensors indicator lights and these three steps is the easiest way to fix it:

  • The sending sensor has a yellow light to show it is on, and the first step is to ensure the yellow light is visible.
  • The receiving sensor has a green light. If the green light is on, then alignment is not the problem.
  • If the green light is off, you must adjust the sensors until the green light is on. Once both lights work, your alignment is complete, and you can retry to close the garage door.

The Craftsman garage door opener design uses fault codes to help locate sensor problems and helps narrow the search. The motor has troubleshooting LED lights that flash a certain number of times to indicate whether the sensors are misaligned and if a wire has a short or is disconnected. Suppose you tried to align the sensor and still have no lights come on; use the troubleshooting LED lights to identify the failure.

If you have an old chain-drive garage door opener, these three codes will help identify the problem:

  • If the sensor wire is disconnected, the troubleshooting LED will flash once.
  • A shorted wire will flash twice.
  • Four flashes indicate that a slight adjustment to the sensor is needed for proper alignment.

The troubleshooting LED works slightly differently on newer chain and belt drive Craftsman garage door opener models. It still works with a LED light but uses arrows that flash up and down and give more information surrounding the fault code. If you have a newer model, these four codes will identify the fault:

  • If the sensor wire is disconnected, broken, or not installed, the LED arrow will flash one’s up and one’s down.
  • A sensor with a shorted or reversed wire will flash up once and down twice.
  • If something obstructs the sensor or is misaligned, the LED flashes up once and down four times.
  • If there is a temporary misalignment or obstruction of the sensor, the LED will flash up four times and down six times.

If the code identified a connection problem, it is most likely a loose wire. Start with the safety sensor wiring on the motor and look for a bad or loose connection. If the wiring at the motor looks in order, move to the sensor and check if a loose or bad connection isn’t at the sensor itself.

If the code shows a broken wire, it could be challenging, especially if the wiring runs through walls. Look for visible damage or broken wires and fix what you can. For the hard-to-reach wires, get assistance from someone experienced to help. You should test your sensors if you checked all the wires are connected and working.

2. Garage Door Won’t Open (Faulty Remote)

A person holding a remote for garage door.

If your garage door doesn’t open, it may be a faulty remote. First, test the remote; then widen the faultfinding search once the remote as a possible problem is eliminated.


The Craftsman garage door opener has a remote lockout feature that prevents the door from being opened with the remote. Disabling the lockout feature will give the remote access to open the garage door. If the lockout feature is not the issue, turn your focus to a dead remote battery or signal interference.

Here are three short steps to identify if your remote access problem is the lockout feature:

  • Press the remote and see if the garage door opener light flashes twice.
  • Go to the wall control panel. If the green LED flashes, it means the lockout feature is enabled.
  • Press the lockout button for two seconds to disable the lockout feature.
  • Test to see if the remote opens the garage door.

Once you eliminate the lockout feature because your remote isn’t opening the door, the problem may be signal interference. Radio interference prevents the garage door from receiving a signal from your remote and could cause the remote not to open the garage door.

Three easy steps can identify signal interference:

  • Get close to the garage door motor unit and press the remote. If the door opens, signal interference is a possibility.
  • A security motion detector light or an electronic game console could cause interference. Find the root of the interference and shut it down or move it.
  • Sometimes finding the interference source is difficult or can’t be eliminated. To overcome such a problem, add an antenna outside your house.

Dead batteries or remote programming is another possible cause for the remote not opening the garage door. Two easy steps can identify a dead battery or programming failure as the problem:

  • Get close to the garage door motor unit and press the remote. A dead battery is possible if the door doesn’t open, and replacing the batteries should fix the problem.
  • If you replaced the batteries and still encounter the same problem after the test, your remote likely lost its programming and needs to be reprogrammed.

If you have explored all these steps and the Craftsman garage door opener still won’t open, it may be time to contact a technician to come and assist you.

3. Garage Door Opener Faulty (Wall Control)

A man installing a garage sensor.

A faulty wall control or wall control wiring could cause the Craftsman garage door opener not to work.


Wiring is rarely the fault with a wall control unit, but rodents have been known to damage wires. The first step is to inspect the visible and hidden wires.

Five steps to help you identify faulty wiring that is visible:

  • The wall control connects the wires to the motor unit with a wire terminal at the back.
  • Make sure that the all-white wire is securely connected to the white terminal.
  • The second wire is white with a red stripe. Ensure that it is properly connected to the red terminal on the motor unit.
  • Trace the visible wires between the motor unit and wall control and repair any broken or damaged wires.
  • Once you confirm that the wiring at the motor unit is intact, check the wall control to see if there are any loose connections or wires and secure them properly.

Testing hidden wires are a bit trickier and will depend on the wall control unit having a LED light or a digital screen. Here are three steps to check a wall control with a LED light:

  • Your first step is removing the wall control and disconnecting the back wires.
  • Touching the two ends of the wires together will act like a switch and should move the garage door if the wiring is intact.
  • A moving door will confirm that your fault lies with the wall control and needs replacing.

If your garage door did not move when you touched the two wires of the wall control, the wiring from the wall control to the motor unit could be faulty.

Follow these six steps to confirm whether the wiring from the wall control to the motor unit is damaged:

  • Disconnect the white wire from the white terminal and the white wire with a red stripe from the red terminal at the back of the motor unit.
  • Take a 3-to-4-inch wire that is insulated and strip a small section of insulation from each end. This wire is known as a jumper wire.
  • Remove the wall control wires from the red and white terminal at the back of the motor unit.
  • Take one end of the jumper wire and insert it into the white terminal and the other end into the red terminal and see if the garage door moves.
  • If the door opens with the jumper wire, the fault is between the motor unit and the wall control.
  • If this does not open the door, a faulty logic board is likely the cause and should be replaced.

Seven steps to test a digital wall control:

  • Remove the digital wall control from its mounted position.
  • Disconnect the two wires from the back of the wall control.
  • Disconnect the white wire from the white terminal and the white wire with a red line from the red terminal at the back of the motor unit.
  • Use an insulated 2-strand wire about 12 inches long and remove a small piece of insulation from each end.
  • Connect the wall control with the 2-strand wire to the corresponding terminals of the motor
  • If the connection activates the wall control lights, the wall control is okay, and the problem is the wiring.
  • Replacing the wires between the motor unit and the digital wall control should solve the problem.

4. Garage Door Not Moving

A man in his car holding a remote control for a garage.

Your garage door won’t open for two reasons: a blocked garage door or a blocked opener trolley.

But other potential causes include a faulty RPM sensor and an overheated motor. The Craftsman garage door opener will provide fault codes to help you pinpoint one of these four issues.

While modern versions function with arrow lights, older garage door openers display these issues with a single LED light. If you only have a single LED light, it will flash five times to tell you that one of these four components is broken or needs attention.

When the same component faults occur on the new garage door opener, the arrow light will flash once up and five times down to indicate that you have a blocked garage door, blocked opener trolley, overheated motor, or RPM sensor problem.


The first step is to let your garage door opener unit cool down. If the garage door was repeatedly opened just before the problem, waiting a half hour is recommended. If the Craftsman garage door opener works after 30 minutes, an overheated motor was likely the cause.

If you did not use the door within 30 minutes before the problem, it might need a logic board reset. Unplug the main power source to the garage door opener for 1 minute. The one minute without power will automatically reset the logic board. Restore the main power to the garage door opener. The logic board reset may fix the problem.

Manually open the garage door by pulling the emergency release rope while ensuring the door latch retracts. Pulling the release rope will disconnect the garage door from the trolley so you can manually open and close it to see if it runs smoothly. If the door latch is locked, the door won’t open. Look for any obstructions or a bent door track that could cause the door not to move.

A bent or damaged garage door opener rail could hinder trolley movement if the door moves freely along the rails. Look for damage to the rail and replace any broken pieces.

Move the inner trolley along the track in one direction to see if there is any hindrance. You do this by activating the garage door opener. Activating the garage door opener will move the track in another direction so you can check it again. Replace the rail or repair it if the damage is found along the rail where the inner trolley stops.

The RPM sensor determines the motor speed. The motor RPM sensor may need to be replaced if the inner trolley moves 6 to 8 inches and there is no rail damage because it is not detecting motor speed.