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the 5651-103BX is the current manufacturer-designated replacement for the 5651-103
Generic filters often vary in actual depth and frame rigidity
providing stable control at low part-load conditions
the 700-426 is the direct functional replacement for the 700-473 model
The manual reset on the high-limit switch acts as a safety "kill switch" that trips if the water temperature exceeds 170°F
Carrier HM56SERIES308 Ignition Control 319852-301 the 5651-103BX is the currentThe Carrier HM56SERIES308 Direct Spark Ignition Control (DSI) is a critical integrated furnace control designed for precise HVAC combustion management. Functioning as a direct replacement for legacy Carrier and Bryant ignition modules, this DSI control board manages the induction motor, pressure switch monitoring, and electrode spark gap timing for reliable burner ignition. It features a sophisticated microprocessor that executes a pre purge cycle to