Blower, Air Supply Comet 2000, 2.0hp, 115v, 9.0A, 4ft AMP

Replaces: 3218120F , 3220101

70% of the time blowers fail because the AIR CHECK VALVE has started allowing water to reach the blower. If you take the blower apart and find any rust that is the reason. 
Conclusion; Replace AIR Check Valve with the blower.