Recently acquired my parents Hotspring Sovereign 2003 model. Had to replace heater relay board and small circulation pump. Panel lights operating as they shoukd now, spa is properly primed from what I can tell, ozone with bubbles working as they should. Now when I turned on heater breaker, set temp to 102, after about 5 minutes the breaker trips. I feel the water warm where the bubbles rise so it seems to be heating.
Heater is Watkins no fault 6000.
Any suggestions or advice would be helpful.