BLOWER MOTOR FAIL
Lennox · SL280V Dave Lennox Signature Collection 80% AFUE Variable Speed Gas Furnace
The main blower motor that circulates conditioned air through ductwork has failed. EL296V, SL280V, and SL297NV use variable-speed ECM motors; ML196E uses multi-speed ECM. Symptoms: no airflow from supply registers, furnace overheating on limit switch. Variable-speed ECM motors are $400–$800. Check for simple causes first: dirty blower wheel, disconnected motor harness.
Error BLOWER MOTOR FAIL on the Lennox SL280V Dave Lennox Signature Collection 80% AFUE Variable Speed Gas Furnace means: Blower Motor Failure (ECM/Variable Speed). The top-ranked community fix is “Test and Replace the ECM Variable-Speed Blower Motor” (hard difficulty, ~90 min, DIY cost: $0-$20). 2 community-ranked fixes available below.
Published February 2026 · 2 fixes · furnace
Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.
While many furnace repairs can be done safely at home, consider hiring a qualified technician if:
Average professional repair cost for this issue: $450-$800.
No Previous Fault Code Stored
Blower Motor Calibration Fault
Auxiliary Limit Switch Open
Inducer Motor Fault
Communicating System Fault
System Lockout — Retries Exhausted
Pressure Switch Stuck Closed
Pressure Switch Open — Did Not Close
The Lennox SL280V Dave Lennox Signature Collection 80% AFUE Variable Speed Gas Furnace has 8 other known error codes:
Error code BLOWER MOTOR FAIL also appears on 3 other Lennox models:
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