Description
The A.O. Smith 9004993215 Auto Limit Switch 250°F Cut Off is used to check the existence of extreme temperatures in the water heater in the HVAC system. It operates by detecting the level of heat around the heating part and the electric parts in use. When the temperature reaches about the switch turns off and automatically breaks the electrical circuit abruptly turning off the heater to avoid overheating. When the conditions have gone back to a safe range the switch enables the system to restart and continue running normally. This automatic reaction serves to guard internal parts, facilitate harmless heating cycles and lower the chance of physical maintain performance better.
