2011 Focus loud whining noise on heat with defrost settings

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5
Likes
0
City
White Bear Lake
State
MN
Country
United States
What I Drive
2011 SE
#1
Argh, baffled why my 2011 Focus SE makes a loud whining noise on heat with defrost settings. Does not happen on heat only settings. I opened up the heater thinking maybe there was leave debris causing the noise. No debris in the heater cage or in the casing from what I could see. Thoughts on what is causing the whiny noise?
 


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