LB-63622A | Lennox BCC3 Furnace Fan Control Board ReplacementDescription The Lennox LB 63622A Fan Control Board is an OEM replacement control module designed to regulate fan and furnace operation in gas HVAC systems. Identified by part number LB 63622A, this board manages low voltage control signals to ensure proper airflow sequencing and system safety. It is used in compatible Lennox furnaces and central HVAC applications requiring dependable fan control logic. Technical Specifications Condition New Never Used
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LB-63622A | Lennox BCC3 Furnace Fan Control Board Replacement