Orcon malfunction
Orcon ventilation unit is noisy
Is your Orcon ventilation unit, HRU, or ventilation motor making more noise than usual? A humming, grinding, rattling, or squealing sound often indicates wear, contamination, imbalance, or a motor that is no longer running smoothly.
- Humming or grinding sound
- Vibrations or resonance
- Revision often possible
What do you notice?
- The ventilation unit or HRU makes more noise than before.
- You hear a humming, grinding, rattling, or squealing sound.
- The sound intensifies at a higher ventilation setting.
- The unit vibrates or resonates through the wall, ceiling, floor, or duct.
Possible causes
- Worn bearings or rotating parts.
- Dirt, dust, or imbalance in the fan.
- Wear on the motor, rubbers, or mounting points.
- Age of the ventilation motor or control system.
What can you safely check yourself?
Listen carefully to the type of sound. A grinding or squealing sound often indicates bearings, while humming or vibrating can also be caused by imbalance, contamination, or resonance. Always disconnect the unit from power before opening or inspecting it.
Are you unsure about the cause?
Use our troubleshooter to determine step-by-step which malfunction best fits your Orcon ventilation system.
Start the troubleshooterWhen is revision possible?
Revision is often worthwhile when the sound is caused by wear on bearings, motor components, or rotating parts. Many Orcon motors can be revised, meaning replacement is not always necessary.
Choose the right solution
Is your problem or model not listed?
Use our troubleshooter or parts finder. We are happy to help you find the right solution.
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