switch the thermostat to "heat" and see if the blower motor runs on that setting. Physically try to spin the squirrel cage that the motor shaft is attached to. If it won't turn at all, chances are the motor is seized. If the motor is bad get the #'s off the nameplate and replace with the same HP motor. Note the wiring when u remove. Wiring is color coded as to fan speeds, etc.
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