The Bunn 4680-2 Disc Type Hi-Limit Thermostat, 230°F is a crucial safety component in Bunn coffee brewers. This thermostat is designed to prevent overheating by automatically shutting off the heating element if the temperature reaches 230°F. This "hi-limit" function is essential for preventing damage to the brewer and, more importantly, preventing potential fire hazards. #4680-2 ... https://partsfe.ca/4680-2-bunn-limit-thermostat