Balboa Circuit Board - Balboa VS501Z Systems (G1152) watercousa and this Magic Plastics Smart

and this Magic Plastics Smart Check version is a 1 inch slip model with a 1/2 pound water setting using the 0821-10C reference

That helps restore the control function with a direct replacement rather than broader system changes

CMP Polaris 360 cleaner UWF connector assembly

which matters because a complete jet should sit naturally in the opening and feel properly matched once installed

and this Balboa VL702S Topside is designed for compatible no-overlay applications where the original control panel has become worn

Balboa Circuit Board - Balboa VS501Z Systems (G1152) watercousa and this Magic Plastics SmartBoard failures in a spa rarely announce themselves in one clean way. Instead, the system gradually starts to feel less dependable, and homeowners are left wondering whether the heater, the pump, or the topside is really to blame. This Balboa VS501Z circuit board is designed for compatible systems where replacing the board is the right way to get ahead of that uncertainty. What makes a board replacement so valuable is that it resets the control logic