Lochinvar & A.O. Smith 100189283 Control 320788-704 replacing the 040-0163-04 and 040-0141-21

replacing the 040-0163-04 and 040-0141-21 current relays

For service technicians and contractors maintaining Daikin and McQuay equipment

Check the HVAC equipment data plate for the model and serial number

5 VA and comes standard with 18" wire leads

this 240C flame rollout switch monitors the burner area for excessive heat rollout

Lochinvar & A.O. Smith 100189283 Control 320788-704 replacing the 040-0163-04 and 040-0141-21The Lochinvar & A. O. Smith 100189283 Control (Integrated FTX725) is a critical OEM boiler control board designed for high efficiency commercial hydronic systems. This integrated furnace control manages critical combustion sequences, including the hot surface igniter timing, blower speeds, and gas valve modulation. Engineered specifically for the Lochinvar Knight and high output A. O. Smith series, it serves as a direct replacement for legacy part