I am new to the hot tub thing so please bare with me. American spas signature series age is unknown.

8 jets around side and 4 in upper part of bed. *&* see attached diagram**

switches are jets, blower, light and heat up or down!

turns on itself to circulate and maintain heat. from the areas of blue
when press jet button 1x jets are circulate jets are stronger and the bottom ones goes on

press jet button again and the jets marked in bacl comeon full speed along with the ones that come on for automatic circulation all the other jets (in red ) do not work. no water or air.

How do I know if this is one of the two waterway pumps or is it a clogg or pipe.

Thanks