F
Hormann General Fault Lockout / Too Many Errors

Display shows “F”, operator locks out after several failed attempts

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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

Repeated obstacle detection, Repeated motor overload, Persistent sensor faults not cleared, Firmware safety lockout

How to Fix / Troubleshooting

Safety first: Identify and correct the underlying cause before resetting. Do not repeatedly force the operator.

Step-by-step:

  • Review recent behavior: Note whether the door was hitting something, stopping mid‑travel, or showing other codes before “F”.
  • Inspect door and hardware: Check for binding, broken springs, damaged panels, or blocked tracks.
  • Check sensors: Verify photocells, safety edge, and stop circuits are all normal.
  • Reset lockout: Disconnect mains power for at least 30 seconds, then restore. Some models require holding the PRG or reset button for several seconds to clear the fault memory.
  • Test carefully: Run a supervised cycle. If the fault reoccurs, address the specific error (overload, obstacle, sensor) rather than repeatedly resetting.
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Repair Difficulty

Medium 3/5

Required Part

Underlying Fault Component (varies: door hardware, sensors, motor, etc.)
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