The Spa has a Teledyne Laars SpaWorks dual pump setup running on 220. I believe the tub was manufactured around 92. On occasion, when you press the primary pump button it will trip the GFCI. I believe this only occurs when the spa pumps go into “high” mode. So I’ll assume both pumps are activating at this point.

The heater element appears to function without issue. Additionally, the wiring and GFCI are all new.