In the morning, you press the remote and nothing happens. Or the motor hums without the door moving. Or the door stops halfway and reverses direction. A motorization breakdown is always a nuisance, especially when the car is in the garage. However, the cause is often simple to identify and fix.
This article offers a step-by-step diagnostic method, explains how to open the door manually in complete safety, and presents the SOMMER parts that can be replaced. To understand the general context, read our sectional garage door motorization guide.
Start with the simplest causes
Before suspecting the motor, check the power supply: is the outlet powered, has the circuit breaker tripped, is the motor's indicator light on? A power outage or a tripped breaker is a common cause. Next, test the remote: change the battery, try another remote, or use the wall button. If the wall button works, the motor is not at fault.
If the remote has lost its programming, reprogram it by following your motor's manual. A replacement remote may be necessary: we offer the SOMMER PEARL 4-channel remote.
If the motor hums or stops: check the door
A motor that makes noise without the door going up, or one that stops and reverses direction, often signals a problem with the door rather than the motor. The prime suspect is the spring: if it is broken, the door becomes too heavy and the motor stops for safety. Our article broken spring: what to do? details the steps to take.
Also examine the cables, rollers, and tracks: a cable off its pulley, a jammed roller, or a misaligned door will slow the door down and trigger the motor's obstacle detection. See cable off its pulley and misaligned garage door. An unbalanced door puts a strain on the motor: see the balancing test in our annual maintenance checklist.
Opening the door by hand: unlocking
When the motor breaks down, you can disengage the door to operate it manually. Unlocking is generally done via a red cord or a handle attached to the carriage, inside the garage. Pull it to disconnect the door from the motor, then lift the door panel gently, starting from the middle.
If the garage has no other access, a SOMMER external release with emergency lock allows you to disengage from the outside. Caution: if a spring is broken or the door is misaligned, do not force it; the door panel is heavy and could fall back down. Ask for help or call a professional.
SOMMER parts to replace
Depending on the breakdown, several parts can be replaced without changing the entire motor. A control fault sometimes comes from the electronic control board: we offer the replacement DUO Vision electronic control board. For greater peace of mind, we also recommend the complete DUO motor kit.
If it is a PRO+, the carriage is broken, or the rail needs to be extended, see the Pro+ S9060 carriage kit and the rail extension. For mounting, the SOMMER motor bracket. Find everything in the SOMMER collection. Take note of your motor's reference number on its label before ordering.
When to replace the motor rather than repair it
If the motor is old and more than 5 years old, it is no longer under warranty. If several parts are faulty or if the repair costs almost as much as a new motor, a replacement is more reasonable. Our catalog offers several models: see the comparison of SOMMER PRO+ or DUO 500, the article on the BENINCA motor, and the one on the LiftMaster myQ motor.
Before investing in a new motor, check the condition of the springs: a new motor on an unbalanced door will wear out quickly. Our spring guide helps you do this.
Conclusion
When facing a broken garage door motor, the most effective approach is methodical: power supply, remote, then the condition of the door, before suspecting the electronics. Manual or external unlocking allows you to manage the situation, provided you do not force an unbalanced door.
Many breakdowns can be resolved by replacing a small part: remote, light bulb, control board, carriage. Send us your motor's reference number and a photo: we will help you find the right part.
FAQ: motor breakdown
Why does my motor no longer respond to the remote?
Check the power supply, change the remote battery, and try the wall button. Reprogram if necessary.
How do I open my door if the motor is broken?
Pull the release handle to disengage the door, then lift it gently. Do not force it if a spring is broken.
Can I open my door from the outside?
With an external release and its emergency lock, yes. It can be installed if the garage has no other access.
Is the motor still under warranty?
Our motors have a 2-year warranty, and 5 years for the SOMMER PRO+. Keep your invoice.