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Legacy® 850 Garage Door Opener

garage door opener

The Legacy® 850 garage door opener provides power, reliability and is available with integrated OHD Anywhere®. This durable 24V Power Plus motor operates most residential sectional garage doors weighing up to 500 lbs. The DC motor technology used in the design of this motor along with the C-channel rail delivers quiet operation.


DC motor technology
24V DC motor operates with variable speed for soft start and stop, providing smooth, quiet operation and less wear and tear on your garage door.


CodeDodger® access security system
Each time the remote control is activated, a new access code is selected from 4.3 billion possible combinations to help prevent piracy of the radio signal that opens your door.


Easy programming
Quick, effortless limit setting for faster installation.


Auto seek frequency range
The opener listens for both the 315 or 390 MHz frequency emitted by the remote or wireless keypad, allowing reliable operation even in areas with frequency interference.


Self-diagnostic Safe-T-Beam® System
When objects pass through the infrared beam, the door automatically stops closing and then reverses.


C-channel rail
Operator rail designed for strength; conceals rotating belt or chain for better aesthetics.


Light system
Illuminate your garage with built-in lighting positioned toward inside of the garage. Integrated LED Lighting.


Automobile convenience features
Compatible with HomeLink® and Car2U® systems.

*HPc Power Plus designates that it exceeds Overhead Door Corporations’ lifting force specification for 1/2 horsepower garage door openers.​​​​​​


Included Accessories


Additional Accessories



Troubleshooting the Legacy 850 Belt Garage Door opener

  • Turn Sure-Lock™ OFF.
  • Check power source.
    – Plug a lamp into outlet used for powerhead. If lamp works, power source is OK.
    – If not, check fuse or circuit breaker.
  • If power is OK,
    – Check connections at powerhead terminals and at wall console.
  • Check for reversed, broken or cut wires. Staples can cut insulation and short wires. Repair or replace.
Make sure carriage is engages with chain/belt bullet.
  • Check to make sure chain/belt in not broken or OFF its pulley.
  • Check all garage door opener remotes.
  • Replace garage door opener remote battery with a good one.
  • Program garage door remotes to powerhead.
  • Relocate the garage door opener remote inside the car and /or point remote at the garage door.
  • Replace the battery in the garage door opener remote.
  • Reposition garage door opener antenna.
  • Eliminate possible competing signals (satellite radio, etc.)
If a your garage door opener is a NEW installation, check the Door Arm position.
  • Check if limits are properly set.
  • Check if the Safe-T- Beam® red LED is flashing.
  • Check the Safe-T-Beam® system for beam obstruction or misalignment of lenses.
  • Check the garage door for binding.
  • If an operational problem exists, and the garage door opener will not close, the garage door opener can be forced to close as follows: Press and hold the wall control button until door is completely closed.
  • Check for interference from adjacent Safe-T-Beam® units.
  • ​​
Check if limits are properly set.
  • Be sure the garage door, the garage door opener, and the springs are in good condition, properly lubricated and balanced.
  • Check closing, “FORCE” adjustment.
  • WARNING: If you suspect a problem with the garage door hardware or springs, use the locator to hire a local garage door service professional.
    NEVER try to repair garage door hardware or springs yourself.
  • Turn the Sure-Lock™ OFF.
  • Check if the limits are properly set.
  • Check the garage door balance, condition, and garage door spring.
  • Check opening “FORCE” adjustment.
  • WARNING: If you suspect a problem with the garage door hardware or springs, use the locator to hire a local door service professional.
    NEVER try to repair door hardware or springs yourself. ​​
  • Button stuck on wall control or remote.
  • Was the garage door opener remote lost or stolen? Erase all remotes from powerhead memory and program new remotes​​
  • Be sure all door fasteners are tight.
  • Be sure garage door is in good repair, properly lubricated and balanced.
  • Be sure opener is in good repair.
  • Check operating condition of the garage door. The garage door may need professional repair/adjustment
  • Have you installed this garage door opener on a one-piece garage door? This garage door opener is not designed to operate a one-piece door.
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