Sommer Door Out of Balance / Weak Springs

Door opens fully but then slowly drifts closed a few inches when disconnected from opener.

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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

Loss of spring tension over time, Incorrect spring size for door weight, Friction in bearings masking imbalance

How to Fix / Troubleshooting

Safety: Spring work is hazardous; do not attempt torsion spring adjustment without proper training.

  • 1. Perform balance test: With opener disconnected, move door to mid‑travel and release. If it drifts significantly, springs need adjustment.
  • 2. Do not compensate with force: Do not increase opener force to overcome a heavy door; this can damage the Sommer motor carriage.
  • 3. Call a professional: Have a garage door technician adjust or replace springs to restore proper balance.
  • 4. Reconnect opener: After balance is corrected, reconnect the carriage and re‑check travel limits.
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Repair Difficulty

Professional Required 5/5
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