I had turned on my Sta-Rite Pool & Spa heater, for the spa, a month ago. After that, when all the equipment was off the spa water level lowered to half. Now, there seems to be little to no water flow into the pool. The spa is off, all valves are set in pool mode. The pressure on the filter housing is over 25 without a filter in it. Last pool person I had here to check the system believes there's an obstruction in the heater. Does anyone know what could get obstructed in the heater? Can I fix it or is it better to call a tech? The model is a Sta-Rite SR333LP. There are no shut off water valves to the heater. Thank you.
After further troubleshooting, I now believe that the heater is not the problem. We had a salt system installed less than a year ago and it seems that the water flows fine from the heater until it passes the flow switch, there seems to be something right below the switch which says Flow, D2466. I'm not sure if this is a valve but if it i,s then this could be the problem. Any thoughts?