Balboa BP2000/SRBP20X 4.0kW Spa Pack

From a Hot Spring Spas. S106DLX

For parts. Stuck/fried heater relay. Missing R56 resistor. Until was working in all but heat would not turn off. Sensors and heating element in good working order. All pump relays working (1,2&3)

Expantion board included and in working order.