Troubleshooting Guide for Overhead Door Legacy Garage Door Openers

Posted by Dave Willmes on 14th Jul 2020

Troubleshooting your Overhead Door Legacy garage door opener is easy with the correct guides and information.

This blog will help you identify common problems, solutions and recommended replacement parts for the following Overhead Door Legacy model garage door openers.

496CD, 496CD/B, 696CD and 696CD/B

Problem	Solution	Recommended Parts
Operator does not run from wall control.	Check lock switch on wall console. Check the power source. Plug a lamp into outlet used for power head. If lamp works, power source is on. If not, check fuse or circuit breaker. If the power is on – Check connections at power head terminals. Check connections at wall control. The motor protector may be open. Wait about 20 minutes for protector to reset before trying again.	Wall Console
Door starts for no reason.	Check staples on wire from power head to wall control. If they cut into insulation, they can short wires. If wire is cut, replace it. Was a remote control lost or stolen? Erase all remote-control codes from receiver memory and reprogram. Wall control button sticking. Check operation of buttons.	Wire Wall Console
Door starts down, then stops before it’s closed.	Check CLOSE limit switch setting Check for shorted wires.	Wire Circuit Board Limit Assembly
Door starts down, then stops and goes back up.	Check force adjustment. Check for light beam obstruction or misalignment of Safe-T-Beam®. Check STB self-diagnostic code	Safety Sensors Circuit Board Limit Assembly
Door will only run closed.	Check OPEN limit switch for short and proper wiring. Check force adjustment. Check for broken door spring.	Circuit Board Limit Assembly
Door will only run open.	Check Safe-T-Beam® System. Check CLOSE limit switch for short and improper wiring. Check force adjustment	Safety Sensors Circuit Board Limit Assembly
Remote control has less than 25 feet operating range.	Relocate remote control inside car. Point remote control at door. Replace battery. DO NOT attempt to retune remote controls	Remote Control Battery
Door starts up, but stops before it's completely open.	Be sure door is operating properly, lubricated and balanced. Check OPEN limit switch setting. Check force adjustment. Check for broken door spring.	Circuit Board Limit Assembly Lubricant
Operator runs, but door does not move.	Make sure carriage is engaged. Check force adjustment	Carriage Inner Slide Release Cord Release Knob
Operator works from wall control, but not from remote control.	Program remote control code into receiver memory. If one remote control works and another does not, check battery, remote control type (Series II) and frequency of non-working unit.	Remote Control Battery
Noisy operation.	Be sure all fasteners are tight. Be sure door is operating properly, lubricated and balanced.	Lubricant
STB System malfunction.	Use self-diagnostic STB System troubleshooting information to maintain safe operation.	Safety Sensors
Lights will not go out.	Check wiring. Disconnect and reconnect wires on wall control. Check for non-compatible wall control.	Wire Circuit Board
Inner slide jammed into power head.	Remove motor cover and rotate opto-wheel.	Opto-Wheel Circuit Board Limit Assembly Front Pulley Assembly Sprocket Saddle Sprocket
Lights will not turn on.	Check light socket and light bulbs.	Light Socket Light Bulbs
Motor hums.	Check the starting capacitor, the transformer on the circuit board. Check to see if main drive gear is cracked	Capacitor Circuit Board Drive Gear

Identifying and solving problems on your own can save you time and money. If you need assistance in ordering replacement parts for your Overhead Door Legacy garage door opener, contact OverheadDoorPartsOnline.com.

For additional information and instructions, you can reference the Overhead Door Legacy 496/696 owner’s manual.

Reference a complete parts diagram for the Overhead Door Legacy 496/696