Balboa Circuit Board - INF107 VS501Z (54357-03) airsupply 0 kW Spa Heater Assembly

0 kW Spa Heater Assembly [240V] [2"] (58001) (G7416) is engineered with a clear focus on compact integration

and that starts with the sensor assembly that relays water temperature back to the system

On many spas

It converts motor energy into hydraulic performance

8 conductor design with 1-to-1 connection mapping

Balboa Circuit Board - INF107 VS501Z (54357-03) airsupply 0 kW Spa Heater AssemblyA circuit board like this INF107 VS501Z replacement matters because it restores the control behavior the spa was originally built around. When that central board begins to weaken, the system often starts acting in ways that seem random at first. Heat may drift, pumps may not respond consistently, and the overall pack can feel like it is slowly losing its stability. Replacing the right board solves that problem at the point where it actually starts.