🔥Furnace

10 FLASHES

Lennox · SL280V Dave Lennox Signature Collection 80% AFUE Variable Speed Gas Furnace

Lennox SL280V Dave Lennox Signature Collection 80% AFUE Variable Speed Gas Furnace 10 FLASHES Error Fix: Blower Motor Calibration Fault

The ECM or variable-speed blower motor has failed its calibration routine or is not operating at the commanded speed. Causes: failed blower motor, motor wiring harness disconnected or damaged, control board blower output failure, or excessive static pressure causing the motor to stall. Variable-speed ECM motors are expensive ($400–$800). Check for simple causes first.

High severity2 fixes available

Quick Answer

Error 10 FLASHES on the Lennox SL280V Dave Lennox Signature Collection 80% AFUE Variable Speed Gas Furnace means: Blower Motor Calibration Fault. The top-ranked community fix is “Test and Replace the ECM Blower Motor or Repair Wiring Harness” (hard difficulty, ~90 min, DIY cost: $10-$25). 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.

When to Call a Professional

While many furnace repairs can be done safely at home, consider hiring a qualified technician if:

This is a high severity error — continued use may cause damage or a safety hazard
The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $400-$800.

Other Lennox Models with Error 10 FLASHES

EL296V Elite Series 96% AFUE Two-Stage Variable Speed Gas Furnace

furnace · 2 fixes

ML196E Merit Series 96% AFUE Single-Stage Gas Furnace

furnace · 2 fixes

SL297NV Dave Lennox Signature Collection 97% AFUE Modulating Variable Speed Gas Furnace

furnace · 2 fixes

Other Lennox SL280V Dave Lennox Signature Collection 80% AFUE Variable Speed Gas Furnace Error Codes

1 FLASH

No Previous Fault Code Stored

2 fixes

11 FLASHES

Auxiliary Limit Switch Open

Inducer Motor Fault

Communicating System Fault

2 fixes

2 FLASHES

System Lockout — Retries Exhausted

2 fixes

3 FLASHES

Pressure Switch Stuck Closed

2 fixes

4 FLASHES

Pressure Switch Open — Did Not Close

2 fixes

5 FLASHES

Flame Sensed Without Call for Heat

2 fixes

People Also Ask About Lennox SL280V Dave Lennox Signature Collection 80% AFUE Variable Speed Gas Furnace Error 10 FLASHES

What does error code 10 FLASHES mean on a Lennox SL280V Dave Lennox Signature Collection 80% AFUE Variable Speed Gas Furnace?

Error code 10 FLASHES on the Lennox SL280V Dave Lennox Signature Collection 80% AFUE Variable Speed Gas Furnace means: Blower Motor Calibration Fault. The ECM or variable-speed blower motor has failed its calibration routine or is not operating at the commanded speed. Causes: failed blower motor, motor wiring harness disconnected or damaged, control board blower output failure, or excessive static pressure causing the motor to stall. Variable-speed ECM motors are expensive ($400–$800). Check for simple causes first.

How do I fix error code 10 FLASHES on my Lennox SL280V Dave Lennox Signature Collection 80% AFUE Variable Speed Gas Furnace?

The most successful fix is "Test and Replace the ECM Blower Motor or Repair Wiring Harness" (hard difficulty, ~90 minutes). Estimated DIY cost: $10-$25. HomeMD has 2 community-ranked fixes for this error.

Is error code 10 FLASHES on a Lennox SL280V Dave Lennox Signature Collection 80% AFUE Variable Speed Gas Furnace serious?

This error is rated high severity. You should address it promptly — continued use could cause damage or safety concerns.

Can I fix Lennox SL280V Dave Lennox Signature Collection 80% AFUE Variable Speed Gas Furnace error 10 FLASHES myself?

Yes — the top-ranked community fix ("Test and Replace the ECM Blower Motor or Repair Wiring Harness") is rated hard difficulty and takes about 90 minutes. Tools needed: T20 Torx screwdriver, Multimeter, Wire strippers, Nut driver set.

How much does it cost to repair Lennox SL280V Dave Lennox Signature Collection 80% AFUE Variable Speed Gas Furnace error 10 FLASHES?

DIY cost: $10-$25. Professional repair typically costs $400-$800. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Lennox SL280V Dave Lennox Signature Collection 80% AFUE Variable Speed Gas Furnace have?

The Lennox SL280V Dave Lennox Signature Collection 80% AFUE Variable Speed Gas Furnace has 8 other known error codes, including: 1 FLASH (No Previous Fault Code Stored), 11 FLASHES (Auxiliary Limit Switch Open), 12 FLASHES (Inducer Motor Fault), 13 FLASHES (Communicating System Fault), 2 FLASHES (System Lockout — Retries Exhausted), and 3 more.

Which other Lennox models have the 10 FLASHES error?

Error code 10 FLASHES also appears on 3 other Lennox models: EL296V Elite Series 96% AFUE Two-Stage Variable Speed Gas Furnace, ML196E Merit Series 96% AFUE Single-Stage Gas Furnace, SL297NV Dave Lennox Signature Collection 97% AFUE Modulating Variable Speed Gas Furnace. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the Lennox SL280V Dave Lennox Signature Collection 80% AFUE Variable Speed Gas Furnace have?

The Lennox SL280V Dave Lennox Signature Collection 80% AFUE Variable Speed Gas Furnace has 8 other known error codes:

1 FLASH — No Previous Fault Code Stored (2 fixes)
11 FLASHES — Auxiliary Limit Switch Open (2 fixes)
12 FLASHES — Inducer Motor Fault (2 fixes)
13 FLASHES — Communicating System Fault (2 fixes)
2 FLASHES — System Lockout — Retries Exhausted (2 fixes)
3 FLASHES — Pressure Switch Stuck Closed (2 fixes)
4 FLASHES — Pressure Switch Open — Did Not Close (2 fixes)
5 FLASHES — Flame Sensed Without Call for Heat (2 fixes)

Which other Lennox models have the 10 FLASHES error?

Error code 10 FLASHES also appears on 3 other Lennox models:

EL296V Elite Series 96% AFUE Two-Stage Variable Speed Gas Furnace (furnace) · 2 fixes
ML196E Merit Series 96% AFUE Single-Stage Gas Furnace (furnace) · 2 fixes
SL297NV Dave Lennox Signature Collection 97% AFUE Modulating Variable Speed Gas Furnace (furnace) · 2 fixes

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