Marantec
Broken or Severely Weakened Door Springs
Opener runs but door only moves a few inches and then stops without reversing; manual operation feels very heavy.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Broken torsion spring above door, Broken extension spring along horizontal track, Spring out of adjustment after years of use, Incorrect spring size for door weight
How to Fix / Troubleshooting
Critical safety warning: Do not attempt to adjust or replace torsion or extension springs yourself. Springs are under extreme tension and can cause serious injury or death.
- Disconnect opener: Pull the emergency release and try to lift the door by hand. If it is extremely heavy or impossible to lift, the springs are likely broken or out of balance.
- Visual inspection: Look for a visible gap in the torsion spring or a hanging/broken extension spring.
- Do not use opener: Operating the opener with broken springs can destroy the Marantec drive system.
- Call a professional: Contact a qualified garage door technician to replace or adjust springs and verify door balance. After repair, reconnect the opener and re‑run travel/force setup.
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Repair Difficulty
Professional Required
5/5
Required Part
Garage Door Torsion or Extension Springs (door hardware, not Marantec)
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