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MaxxFan 7000K chirp


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For years our MaxxFan 7000K has made a high pitched chirping noise at lower speeds. I had been told that it was due to pulse width modulation speed control so I didn’t try to fix it. My wife can’t hear the noise but it really annoys me. I finally googled and found this video. I cleaned the brush dust out of the motor and now the fan is pretty quiet. Be aware that black dust will come out of the motor when it is disassembled so you might have someone hold something under the motor as you pull it apart. 
 

 

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Bill and Martha

2018 LEII Hull 313

2019 Chevrolet 2500HD Duramax

 

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Update: The chirping started again after about 2 days. I ran the fan on the highest setting for several hours and now the fan is quiet again. 

  • Like 2

Bill and Martha

2018 LEII Hull 313

2019 Chevrolet 2500HD Duramax

 

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