LiftMaster Opener Error Code 1-6: Meaning and Fix
Also shown as: 16, Up 1 Down 6
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. On LiftMaster the Learn button color and the count of flashes together identify the board.
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.
What causes 1-6
- A door that is out of balance so it keeps drifting
- A loose chain or belt letting the carriage slip
- A worn gear or travel module
- Travel limits set too tight or lost
How to fix it
- Disconnect the trolley and test balance: the door should stay roughly half open.
- Call a pro for spring or balance adjustment if it drifts.
- Re-run the limit and force setup per the manual.
- Tighten the chain or belt to the manual spec.
- Replace the travel module or gear kit if it keeps coasting.
Parts you may need
Questions
Why do I see 1-6 on my LiftMaster?
The door moved after the motor stopped, which usually means poor balance or lost limits.
Can I reset it?
Reset the limits per the manual, but fix the balance first.
Is it dangerous?
An unbalanced door can drop; have springs adjusted by a professional.
Other LiftMaster 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 8500W, 87504-267, LJ8900W, 2265, 2280, 1240R, 1345, 8075.