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FAQ
My central exhaust …

My central exhaust unit (ULV, USV, USVX) does not run at all speed levels – what could be the cause?

If a central exhaust unit of type ULV, USV or USVX does not operate at all speed levels, the most likely cause is a defective run capacitor. A local, authorised electrician can assist with replacing this component. The run capacitor has article number 101318 and is installed in the controller box near the motor.