Whether you are addressing a furnace relay replacement or integrating a booster fan

Extended Component Life: Replacing the armature and diaphragm internals reduces friction and mechanical wear on the solenoid coil

000 BTU nominal cooling capacity

or the control board flashing a code for "low flame signal" despite a visible burner flame

With a 24-inch lead length and a standard 11/32-32 male connector nut

Lochinvar & A.O. Smith 100208475 Connector 318172-701 Whether you are addressing aWhen you're dealing with a communication fault or a total system lockout on a high efficiency unit, the Lochinvar & A. O. Smith 100208475 Board Connector is a critical point of failure to inspect. This genuine OEM connection board, which replaces legacy part numbers RLY20066, RLY20066K, and 100167582, serves as the primary interface between the main control module and peripheral system sensors. Engineered for the Lochinvar Crest (models CHN and CHL)