Captain911 Posted August 5, 2016 Share Posted August 5, 2016 Hello, I recently noticed my LX 470 has a high pitched noise when the fan is on for the heat or AC. I replaced the blower motor but that did not fix it. Any thoughts on what it may be? Thanks for any assistance. Tim Quote Link to comment Share on other sites More sharing options...
TrevC Posted August 9, 2016 Share Posted August 9, 2016 when did the noise first start...and had any work been carried out in the heating / ventilation area? Pollen filter may be worth checking and maybe take out to eliminate the whether it could be creating or amplifying the noise Quote Link to comment Share on other sites More sharing options...
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