Pumptec shows solid green but no water is coming thru.

I have a pumptec plus on my system. Pump moves water to a holding tank and then pressure feeds the house. No water in house so where is my pressure switch located? Pumptec light is solid green. there is power at well head. Trying to figure out where pressure switch is located.

holding tank or pressure tank? should be located right at the pressure tank which are usually blue in color.