Hormann
Intermittent Encoder or Control Board Fault
Door opens only halfway and stops, then will not respond until power is cycled
Advertisements
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.
Advertisements
Possible Causes
Loose encoder connector, Hairline crack on PCB, Overheating control board components
How to Fix / Troubleshooting
Safety first: Disconnect power before opening the operator housing.
Step-by-step:
- Reseat connectors: Unplug and re‑plug the encoder and motor connectors on the control board.
- Inspect PCB: Look for cracked solder joints, especially around large components and connectors. Lightly flexing the board (with power off) may reveal intermittent faults, but do not damage it.
- Check for heat: After a short run, carefully feel (without touching live parts) for hot spots on the board. Poor ventilation can cause intermittent failures.
- Replace board if needed: If symptoms persist despite good wiring and encoder, replace the control board.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Control Board or Encoder
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements