Specialist in revisie Ventilatiemotoren en WTW Onderdelen & advies Hulp bij merk en model Kenniscentrum Uitleg en praktische artikelen
Hulp nodig? Open Oploscentrum

We are on holiday until April 6. From April 7, we will resume processing messages and orders. Happy Easter.

Buva malfunction

Buva ventilation unit no longer rotates

Is your Buva ventilation unit or HRU unit no longer rotating at all? The cause could lie with the motor, bearings, circuit board, power supply, or control. In many cases, repair or overhaul is still possible.

Problem Motor no longer rotates
  • No air displacement
  • Motor does not start
  • Motor overhaul often possible
Start troubleshooter

What do you notice?

  • The ventilation unit no longer responds.
  • There is no or hardly any air displacement.
  • The motor tries to start but doesn't get going.
  • The ventilation unit remains completely silent or only hums.

Possible causes

  • Defective or seized motor.
  • Worn bearings or stiff-running components.
  • Problems with the circuit board, power supply, or control.
  • Wear or contamination of the ventilation motor.

What can you check yourself?

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

Not sure where the fault is?

Use our troubleshooter to determine, step by step, which cause best fits your Buva ventilation system.

Start the troubleshooter

Can the motor still be repaired?

In many cases, yes. When the motor, bearings, or rotating parts are defective, overhauling can often be a cost-effective and sustainable solution. Only in cases of severe damage or irreparable parts is complete replacement necessary.

Choose the right solution

Buva motor overhaul View repairs → More about Buva overhaul View overhaul page →

Read more about Buva

Also check out our other information pages about Buva ventilation units, HRU units, parts, malfunctions, and overhaul.

Buva ventilation units Main page of the Buva knowledge center Mechanical ventilation units Buva Q-Stream, EcoStream, and other ventilation units HRU units Heat recovery and HRU systems Buva overhaul Everything about motor overhaul and repair Buva parts Motors, circuit boards, sensors, filters, and parts Buva makes noise Noise, vibrations, and wear Buva hums Constant humming or resonance Buva no longer rotates Motor does not start or respond Buva does not extract well Low extraction or moisture problems Buva bearings worn Grinding or screeching motor due to wear

Is your problem or model not listed?

Use our troubleshooter or part finder. We are happy to help you find the right solution for your Buva ventilation system.

Start troubleshooter Find a part
Back to top
Customers rate us 4.9/5 based on 989 reviews.