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Bathroom fan not working

01 - Bath Fan Fan Blade

First, inspect the fan blade for damage. If the fan blade is damaged, replace it. If the fan blade does not appear to be damaged, try turning the fan blade by hand. If the fan blade does not turn freely, check for obstructions. If any obstructions are present, remove them. If the fan blade does not turn freely, and no obstructions are present, the fan motor might be defective.
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Highly Likely

02 - Bath Fan Fan Motor

The fan motor might be burned out. To determine if the fan motor is defective, use a multimeter to test it for continuity. If the fan motor does not have continuity, replace it.
Less Common

03 - Bath Fan Blower Wheel

Try spinning the blower wheel by hand. If the blower wheel does not spin freely, check for the blower wheel for obstructions. In addition, ensure that the blower wheel is not rubbing against the blower housing. If the blower wheel does not turn freely, and no obstructions are present, the fan motor might be defective.
Less Common

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