Upgrade your Worcester Bosch Greenstar Junior 24i/281 with the genuine circuit board, part number 8748300921, designed for models manufactured from 2009 onwards. This essential component is tailored to ensure compatibility and maintain optimum performance of your storage tank water heater. Crafted by Worcester, a trusted name in heating solutions, this circuit board is a vital part of your Greenstar Junior system, offering reliability and longevity. The precise engineering ensures a seamless fit and operation, safeguarding against potential issues and ensuring your water heater runs smoothly.