A control device capable of continuously operating an electric motor even when an abnormality occurs in a fan. The control device includes: a cooling operation information acquisition section configured to acquire cooling operation information of the fan; a cooling operation determination section configured to determine whether the cooling operation information indicates a normal cooling operation; a running information acquisition section configured to acquire running information of the electric motor; and a running control section configured to, in accordance with a determination that the cooling operation information does not indicate the normal cooling operation, control an operation of the electric motor to be in an overheat-prevented state by referring to the running information.