LiftMaster opener codes

A garage door opener reports faults through blinking LEDs on the motor head, a diagnostic window on the logic board, or the wall control. Count the flashes slowly and repeat the count before you decide what you saw. On LiftMaster the Learn button color and the count of flashes together identify the board.

Models covered: 8500W, 87504-267, LJ8900W, 2265, 2280, 1240R, 1345, 8075.

LiftMaster opener code Yellow Learn LED rapid flash: opener

All 31 codes

Yellow Learn LED rapid flashStuck button on a remote or keypad (DIY)

LiftMaster opener code 1-1: safety sensor pair

1-1Safety sensor wire open or sensors not connected (DIY)

LiftMaster opener code 1-2: safety sensor

1-2Safety sensor wire shorted or reversed (DIY)

LiftMaster opener code 1-3: wall control panel

1-3Door control wire shorted (DIY)

LiftMaster opener code 1-4: safety sensor with sunblocker

1-4Safety sensors misaligned or beam blocked (DIY)

LiftMaster opener code 1-5: travel module

1-5Travel module or RPM sensor fault (pro repair)

LiftMaster opener code 1-6: gear and sprocket kit

1-6Door coasting after stopping (pro repair)

2-1Logic board fault 2-1 (pro repair)

2-2Logic board fault 2-2 (pro repair)

2-3Logic board fault 2-3 (pro repair)

2-4Logic board fault 2-4 (pro repair)

LiftMaster opener code 2-5: noise filter board

2-5Logic board fault 2-5 (pro repair)

LiftMaster opener code 3-2: travel module

3-2Travel limits lost after power return (DIY)

LiftMaster opener code 3-3: battery backup

3-3Battery charging circuit error (DIY)

LiftMaster opener code 3-5: travel module

3-5Door stops open or reverses to closed limit (pro repair)

4-1Force or travel fault, door reverses before floor (pro repair)

4-3Door stops and reverses just before the floor (DIY)

4-4Door stops before reaching full open (DIY)

4-5Travel module connection or door movement fault (pro repair)

LiftMaster opener code 4-6: sensor bracket

4-6Safety sensors blocked or misaligned (DIY)

LiftMaster opener code 1 flash: safety sensor

1 flashSafety sensor wire broken or disconnected (DIY)

LiftMaster opener code 2 flashes: safety sensor

2 flashesSafety sensor wire shorted or reversed (DIY)

LiftMaster opener code 3 flashes: wall control panel

3 flashesDoor control (wall button) fault (DIY)

LiftMaster opener code 4 flashes: safety sensor with sunblocker

4 flashesSensor beam misaligned (sender steady, receiver dim) (DIY)

LiftMaster opener code 5 flashes: RPM sensor

5 flashesNo RPM pulses detected in the first second (pro repair)

LiftMaster opener code 6 flashes: logic board

6 flashesMotor circuit failure (pro repair)

LiftMaster commercial operator code MAS 2 blinks: logic board

MAS 2 blinksClutch slipping (pro repair)

LiftMaster commercial operator code MAS 4 blinks: logic board

MAS 4 blinksRPM sensor error (pro repair)

LiftMaster commercial operator code MAS 8 blinks: logic board

MAS 8 blinksBrown-out (pro repair)

LiftMaster commercial operator code LMEP steady flash: logic board

LMEP steady flashPhoto eye wire disconnected or damaged (pro repair)

LiftMaster commercial operator code MAS 5 blinks: logic board

MAS 5 blinksOperator wiring problem (pro repair)

About LiftMaster codes

LiftMaster, from the Chamberlain Group, is the professional-installer line. Its openers with a yellow Learn button report faults as LED flash counts or two-digit diagnostic codes such as 1-1 or 4-5 on the logic board. The codes apply to model numbers such as 8500W and 87504-267; check the label on your unit to confirm yours.