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The Lennox 23V84 is a factory-programmed OEM draft inducer blower motor engineered to maintain precise combustion airflow and safe venting in compatible Lennox furnace systems. As a pre-programmed unit, it is calibrated to meet exact Lennox specifications, ensuring reliable ignition sequences and efficient flue gas exhaust without the need for additional setup. Symptoms of a failing draft inducer motor include furnace lockout errors, pressure switch faults, unusual noise at startup, or the furnace failing to ignite — all of which indicate the 23V84 should be replaced promptly.