The Raypak 004675F Economaster Relay Circuit Board is a crucial component for Raypak Economaster pool heaters. It acts like a conductor, managing the activation and deactivation of various electrical relays. These relays control essential functions like gas flow and ignition, ensuring the heater operates safely and efficiently. https://www.partshnc.com/004675f-raypak-economaster-rlycircuit-board