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A reading below 350mV typically indicates a failing thermopile
Designed for systems requiring precise timing
you know that consistent combustion is the backbone of any reliable furnace
15 service factor and dual-frequency compatibility (60Hz default / 50Hz capable)
Constructed from high-durability materials to withstand the thermal demands of burner environments
Trane BRD04889 Main Board 321142-301 A reading below 350mV typicallyThe Trane BRD04889 Main Board is an essential genuine OEM replacement part for technicians and contractors maintaining Trane and American Standard HVAC systems. This main control board acts as the central intelligence for the unit, managing critical heating and cooling operations to ensure the sequence of operation remains within factory parameters. Engineered for high efficiency HVAC performance, the BRD04889 regulates electrical circuits for the