Lochinvar & A.O. Smith 100208468 Control 321894-709 this component is an essential

this component is an essential HVACR replacement part for technicians maintaining high-efficiency refrigeration cycles

ensuring stable environmental control in direct-fired equipment

Look for visible signs of "swarf" or metallic debris near the hub

Integrated Freeze Protection: Built-in frost setting prevents pipe bursts in unoccupied spaces during extreme weather

Lochinvar & A.O. Smith 100208468 Control 321894-709 this component is an essentialThe Lochinvar & A. O. Smith 100208468 User Interface Control is a critical OEM replacement part engineered for precise management of commercial boiler and water heater systems. Designed to replace legacy part numbers RLY20031, RLY20031K, and 100167553, this control board serves as the primary communication hub between the technician and the appliance's internal logic. It is specifically calibrated for the Copper Fin II series, including models CF 402