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Orcon malfunction

Orcon ventilation unit no longer running

Is your Orcon ventilation unit, HRU, or ventilation motor no longer running at all? The cause could be the motor, bearings, capacitor, circuit board, or power supply. In many cases, repair or refurbishment is still possible.

Problem Motor no longer running
  • No air movement
  • Motor does not start
  • Refurbishment often possible
Start troubleshooting

What do you notice?

  • The ventilation unit no longer responds.
  • There is no or hardly any air movement.
  • The motor tries to start but does not get going.
  • The unit remains completely silent or only hums.

Possible causes

  • Defective or seized motor.
  • Worn bearings or stiff rotating parts.
  • Problem with capacitor, circuit board, or power supply.
  • Wear due to prolonged use or contamination.

What can you safely check yourself?

First, check if the unit is receiving power and if the controls are working correctly. Listen if the motor remains completely silent, hums, or tries to start. Always de-energize the ventilation unit before opening or inspecting it.

Not sure where the fault lies?

Use our troubleshooting guide to determine, step by step, which cause best fits your Orcon ventilation system.

Start troubleshooting

Can the motor still be repaired?

In many cases, yes. If the motor, bearings, or rotating parts are defective, refurbishment can often be a cost-effective and sustainable solution. Only in cases of severe damage or non-repairable parts is full replacement more sensible.

Choose the right solution

Orcon motor overhaul View repairs → More about Orcon refurbishment View refurbishment page →

Read more about Orcon

Also check out our other information pages about Orcon ventilation units, HRUs, parts, malfunctions, and refurbishment.

Orcon ventilation units Main page of the Orcon knowledge center Mechanical ventilation units MVS series, MVS-15, MVS-15RH, MVS-15P and MVS-15RHB HRU units HRC, HRC EcoMax, MaxComfort and older HRU systems Orcon refurbishment Everything about motor overhaul and repair Orcon parts Motors, circuit boards, capacitors and other parts Orcon makes noise Sound, vibrations and wear Orcon hums Constant hum or resonance Orcon not running Motor does not start or respond Orcon does not extract well Poor extraction or moisture problems Orcon bearings worn Grinding or screeching motor due to wear

Is your problem or model not listed?

Use our troubleshooting guide or parts finder. We are happy to help you find the right solution.

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