Here are the most common problems, along with repairs for garage doors & openers.

Garage door opener does not operate with either the remote or the wall switch: 

The power source has probably been disrupted - check to see if it is plugged in.  Check your circuit breaker, fuses and power boxes. Also, check the batteries in your remote, keypad or wall button.  Perhaps it needs to be reprogrammed. 

Garage door won't close all the way: 

Check the limit switch - needs adjusting.  If not, see if the door is binding when raised or lowered and to see the the photo cells/electrical beams or they are aimed directly at one another, or has something blocking it. 

Garage door reverses before hitting the floor:

Check photo cells/electrical beam - may be blocked at floor level of the door.  Close force may need adjusting.  

Garage door does not open completely:

The limit switch may need to be removed away from the motor unit. Make sure the antenna on the motor unit is hanging down.  

Broken springs or a broken motor:

These are the most serious garage door repairs.  It is always recommended to replace springs in pairs, to ensure balanced operation.  A professional should repair a broken spring or motor.  

 Regular maintenance of your garage door system may help prevent some garage door repairs.  

Overhead Door Corporation’s Knock & Lock^®Breakaway Door System is the industry’s only self-resetting, impact-resistant dock door available. The rugged Knock & Lock^® is designed for higher productivity, energy efficiency and costs 35% less than a complete breakaway door, making it the ideal choice for any dock environment. In addition, the Knock & Lock^®Breakaway Door System offers a rugged, puncture-proof interior skin with a steel exterior for years of trouble-free service. Every panel is polystyrene insulated to 2 inches, providing an R-value of 8.56, and has dual slide locks on the bottom section for security. Every Knock & Lock^®Breakaway Door System is backed by an industry leading 10 year limited warranty. Whether the application requires a breakaway door system or simply breakaway sections for retrofit applications, the Knock & Lock^®Breakaway Door System is the perfect solution for facility managers and architects alike.

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The Knock & Lock self-resetting impact resistant breakaway door system is designed to increase productivity
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Performance and Durability
Knock & Lock is designed to provide reliable performance for many years and is backed by an industry-leading
warranty:
• 10-year retractile cord warranty
• 10-year puncture warranty
• The automatic reset keeps your doors operating after  
impact to eliminate downtime and associated costs
• Breaks away with little force for system longevity
• Single/dual panel breakout (breaks in and out) for  
additional impact-resistance and door system durability
• Puncture-resistant interior skin and steel exterior for  
durability and longevity
• Polystyrene insulation in every section with an R-value of
8.56 for energy-efficiency (U-value .12)
• Dual slide locks standard on each section for extra security
• Wind load up to +43/-50 psf (depending on section width) 
is standard to satisfy application requirements in a variety 
of environmental conditions (Stated wind load is for Knock 
& Lock sections, not entire door. Remaining door sections
may require additional reinforcement depending on size if
wind load is required for the application.)
• Can be field-painted with latex paint to complement the
look of your facility
• 2” rollers for smooth operation
• 3” roller option for additional durability in demanding,
high traffic volume applications
• Available in 6’2”, 8’2”, 9’2”, 10’2”, 11’2”, 12’2” and 16’2”*
section widths and in 24” and 21” section heights to  
satisfy a wide variety of applications