Balboa Circuit Board - INF107 VS501Z (54357-03) airsupply The white finish is also

The white finish is also a strong selling point in spas where bright trim

Designed for XP2 48 frame applications

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

On many spas

8 conductor design with 1-to-1 connection mapping

Balboa Circuit Board - INF107 VS501Z (54357-03) airsupply The white finish is alsoA 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.