No fan speeds / only one speed — Check Blower Motor Resistor
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No fan speeds / only one speed — Check Blower Motor Resistor
No fan speeds or the blower only works on one speed? That’s a classic sign of a bad blower motor resistor. In this Shorts video, we explain why you can lose multiple HVAC fan speeds (like 1–3) while high speed still works, because the highest setting often bypasses the resistor.
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