Chamberlain Garage Door Openers Error Codes

1-1

Garage door will not close; opener lights flash 1 time, pause, then 1 time repeatedly (Security+ 2.0 / myQ logic board LED shows code 1-1).

Safety Sensor Misalignment or Obstruction

1-2

Garage door will not close; opener lights flash 1 time, pause, then 2 times repeatedly (logic board LED code 1-2).

Safety Sensor Wire Short or Reversal

1-3

Garage door will not close; opener lights flash 1 time, pause, then 3 times repeatedly (logic board LED code 1-3).

Safety Sensor Not Wired or Not Responding

1-4

Garage door will not close; opener lights flash 1 time, pause, then 4 times repeatedly (logic board LED code 1-4).

Safety Sensor Alignment Intermittent or Sunlight Interference

2-1

Garage door reverses to open position during closing; opener lights flash 2 times, pause, then 1 time (logic board LED code 2-1).

Down Travel Limit Not Set or Lost

2-2

Garage door reverses during closing before reaching the floor; opener lights flash 2 times, pause, then 2 times (logic board LED code 2-2).

Down Force Setting Too Low or Door Binding

2-3

Garage door stops or reverses randomly; opener lights flash 2 times, pause, then 3 times (logic board LED code 2-3).

Travel Module or RPM Sensor Fault

2-4

Garage door stops and reverses at the same point on every close; opener lights flash 2 times, pause, then 4 times (logic board LED code 2-4).

Obstruction or Hard Spot in Door Travel

3-1

Opener will not run; logic board LED flashes 3 times, pause, then 1 time (3-1).

Wall Control or Wall Button Short

3-2

Opener runs only from wall control or only from remotes; logic board LED flashes 3 times, pause, then 2 times (3-2).

Radio Receiver or Wall Control Communication Fault

3-3

Opener will not accept new remote or keypad codes; logic board LED flashes 3 times, pause, then 3 times (3-3).

Memory or Learn Circuit Failure

3-4

myQ or Wi‑Fi features not working; logic board LED flashes 3 times, pause, then 4 times (3-4) on smart Chamberlain openers.

Wi‑Fi Module or myQ Communication Fault

4-1

Opener hums but door does not move; logic board LED flashes 4 times, pause, then 1 time (4-1).

Motor Overload or Stalled Motor

4-2

Opener runs briefly then stops; logic board LED flashes 4 times, pause, then 2 times (4-2).

Overcurrent or Motor Thermal Protection Trip

4-3

Opener lights turn on but motor does not run; logic board LED flashes 4 times, pause, then 3 times (4-3).

Relay or Motor Drive Circuit Failure

4-4

Opener operates erratically; logic board LED flashes 4 times, pause, then 4 times (4-4).

Internal Logic Board Fault

5-1

Battery backup indicator beeps or flashes; logic board LED flashes 5 times, pause, then 1 time (5-1) on Chamberlain battery backup models.

Battery Backup Low or Disconnected

5-2

Battery backup not functioning during power outage; logic board LED flashes 5 times, pause, then 2 times (5-2).

Battery Backup Failure

5-3

Constant beeping from opener; battery indicator shows fault; logic board LED flashes 5 times, pause, then 3 times (5-3).

Battery Overvoltage or Reverse Polarity

6-1

Door moves a few inches then reverses; logic board LED flashes 6 times, pause, then 1 time (6-1).

Travel Limits Corrupted or Not Set

6-2

Door opens but will not close fully; logic board LED flashes 6 times, pause, then 2 times (6-2).

Down Limit or Force Conflict

6-3

Door closes then immediately reverses and opens fully; logic board LED flashes 6 times, pause, then 3 times (6-3).

Safety Reversal Triggered by Excessive Force

Symptom

Garage door closes and then immediately opens a few inches and stops.

Backdrive or Travel Overrun

Symptom

Garage door is very noisy during operation (grinding, squealing, or rattling).

Mechanical Wear or Lack of Lubrication

Symptom

Garage door opens fine but will not close unless you hold the wall button down continuously.

Constant-Pressure Override Mode

Symptom

Garage door opens only a few inches and then stops.

Door Spring or Counterbalance Failure

Symptom

Garage door opens or closes by itself without any command.

Unintended Activation / RF Interference

Symptom

Garage door reverses before fully opening; stops partway and goes back down.

Up Travel Limit or Force Misadjustment

Symptom

Garage door stops randomly mid-travel without reversing or error lights.

Intermittent Power or Control Signal Loss

Symptom

Garage door vibrates excessively or shakes the opener and ceiling.

Improper Mounting or Unbalanced Door

Symptom

Garage door will not close from remote but will close if wall button is held down.

Safety Sensor Override Condition

Symptom

Garage door will not open at all; opener does not run, no motor sound, but outlet has power.

Logic Board Power Supply Failure

Symptom

Garage door will not open; opener runs but door does not move, trolley stays still.

Disengaged Trolley or Broken Drive Connection

Symptom

Keypad will not operate the door but remotes and wall button work.

Wireless Keypad Failure or Programming Issue

Symptom

Opener emits a burning smell or visible smoke during operation.

Electrical Overheating or Component Failure

Symptom

Opener light does not turn on when door operates, but opener otherwise works.

Light Circuit or Lamp Socket Failure

Symptom

Opener light stays on constantly and will not turn off.

Stuck Light Relay or Misconfigured Light Timer

Symptom

Opener makes a clicking sound but motor does not start.

Motor Start Circuit Failure

Symptom

Opener runs but door moves very slowly or struggles, especially in cold weather.

High Door Friction or Weak Motor Start

Symptom

Remote controls do not work but wall button operates the door normally.

Radio Receiver or Antenna Issue