Chamberlain Opener Error Code 4-1: Meaning and Fix
Also shown as: 41, Up 4 Down 1
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 4-1
- A door out of balance or stiff rollers
- A faulty travel module
- Limits or force set wrong
- An obstruction in the door path
How to fix it
- Check the door by hand for smooth travel.
- Lubricate rollers and hinges (not tracks).
- Re-run the limit and force setup.
- Inspect for obstructions on the floor line.
- Replace the travel module or call a technician if it persists.
Parts you may need
Questions
What causes 4-1 on a Chamberlain opener?
Excess force or travel readings that make the door bounce back.
Can I raise the force?
Only a little; an out-of-balance door must be fixed, not forced.
Is it a pro job?
If balance or springs are involved, yes.
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.