Chamberlain Opener Error Code 1-4: Meaning and Fix
Also shown as: 14, Up 1 Down 4
Reading the opener display
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. Chamberlain boards use the same flash chart as LiftMaster; the Learn button color matters.
Chamberlain makes the openers sold at home centers and shares its logic boards and diagnostic code tables with LiftMaster and Craftsman. The faults show as a flash count on the Learn LED or the motor-head display. The codes apply to model numbers such as B4505T and B2212T; check the label on your unit to confirm yours.
What causes 1-4
- A sensor bumped out of line by a vehicle, bike or yard tool
- Dirt, cobwebs or snow on a lens
- A loose sensor bracket
- Direct sunlight hitting the receiving lens
How to fix it
- Clear anything from the beam path and wipe both lenses with a soft cloth.
- Check both sensor lights; they should be steady, not dim or flashing.
- Loosen the wing nut on the misaligned bracket and aim until the receiving indicator is solid.
- Tighten the brackets and shade the receiver from sun if needed.
- Run a close cycle to confirm.
Parts you may need
| Part | Part no. | Buy |
|---|---|---|
| Safety sensor kit | 041A5034 | Find part |
| Safety sensor sunblocker kit | 041B0873 | Find part |
| Safety sensor bracket kit | 041A5266-3 | Find part |
Part numbers are OEM references; confirm fit by your model number before ordering. Some links are affiliate links; we may earn a commission at no extra cost to you.
Questions
How do I fix 1-4 on a Chamberlain garage door opener?
Wipe and realign the safety sensors until both lights are steady.
Do both sensors need to be level?
They must face each other, so keep them at the same height.
Can sunlight cause 1-4?
Yes, a sun-blasted receiver can lose the beam. A sunblocker shield helps.
Other Chamberlain opener codes
Sources
Part numbers are OEM references; confirm fit by your model number before ordering. Meanings compiled from manufacturer and parts-retailer documentation; see sources below. Unplug the appliance before opening it.
Applies to models including B4505T, B2212T, B6713T, B2202T, C2405T, RJO20.