Welcome to our forum.
If you looked at the pics, you notice the hose connected to the blower motor sits on the floor under the tub. So to troubleshoot this motor, looks like I have to drain the tub??? Not really sure what a blower motor does, seems to come on by itself every day @ 10am for about 30 seconds or so, or if you are in the tub, when turned on, creates a lot of "action" in the water.? Tx again....