Service Bulletin Description:
While long-vent models are a bit louder than standard models, consumers experiencing excessive loudness or specific sounds described as rubbing, screeching, or knocking, may have a blower wheel that is too close to or impacting the collar or blower housing.
This Service Bulletin PDF download contains information for the following:
WED560LHW WGD560LHW YWED560LHW
The PDF may also contain information that applies to additional models not listed.