The Vaillant Printed Circuit Board - 0010028086 is a component designed for use in a storage tank water heater. Manufactured by Vaillant, a reputable brand known for producing heating products, this circuit board is likely a crucial part of the water heater's functioning. With its specific model number, it is tailored to fit and work efficiently within Vaillant water heater systems, ensuring reliable performance and control of the unit. Came from a working boiler please see images of boiler it came from and serial numbers