🔥Furnace

E09

Trane · S9V2B080U4 80,000 BTU 96% AFUE Two-Stage Variable Speed Gas Furnace

Trane S9V2B080U4 80,000 BTU 96% AFUE Two-Stage Variable Speed Gas Furnace E09 Error Fix: Flame Rollout Detected

Flame rollout sensor has detected flame outside the combustion chamber, indicating possible blocked venting or cracked heat exchanger. This is a serious safety hazard causing furnace shutdown.

critical2 fixes available

Quick Answer

Error E09 on the Trane S9V2B080U4 80,000 BTU 96% AFUE Two-Stage Variable Speed Gas Furnace means: Flame Rollout Detected. The top-ranked community fix is “Replace Flame Rollout Sensor” (medium difficulty, ~30 min, DIY cost: $30-$50). 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.

Root Cause Analysis

Sensor MalfunctionPrimary

When to Call a Professional

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

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: $130-$200.

Other Trane Models with Error E09

XR13 13 SEER Central Air Conditioner

air_conditioner · 2 fixes

Other Trane S9V2B080U4 80,000 BTU 96% AFUE Two-Stage Variable Speed Gas Furnace Error Codes

E01

Pressure Switch Failure

Ignition Failure

High Limit Switch Open

2 fixes

E04

Inducer Motor Failure

Flame Sensor Failure

Blower Motor Overload

Limit Switch Shorted

Control Board Communication Error

2 fixes

People Also Ask About Trane S9V2B080U4 80,000 BTU 96% AFUE Two-Stage Variable Speed Gas Furnace Error E09

What does error code E09 mean on a Trane S9V2B080U4 80,000 BTU 96% AFUE Two-Stage Variable Speed Gas Furnace?

Error code E09 on the Trane S9V2B080U4 80,000 BTU 96% AFUE Two-Stage Variable Speed Gas Furnace means: Flame Rollout Detected. Flame rollout sensor has detected flame outside the combustion chamber, indicating possible blocked venting or cracked heat exchanger. This is a serious safety hazard causing furnace shutdown.

How do I fix error code E09 on my Trane S9V2B080U4 80,000 BTU 96% AFUE Two-Stage Variable Speed Gas Furnace?

The most successful fix is "Replace Flame Rollout Sensor" (medium difficulty, ~30 minutes). Estimated DIY cost: $30-$50. HomeMD has 2 community-ranked fixes for this error.

Is error code E09 on a Trane S9V2B080U4 80,000 BTU 96% AFUE Two-Stage Variable Speed Gas Furnace serious?

This error is rated critical severity. It is generally not urgent and can often be resolved with a simple DIY fix.

Can I fix Trane S9V2B080U4 80,000 BTU 96% AFUE Two-Stage Variable Speed Gas Furnace error E09 myself?

Yes — the top-ranked community fix ("Replace Flame Rollout Sensor") is rated medium difficulty and takes about 30 minutes. Tools needed: Phillips screwdriver, Nut driver.

How much does it cost to repair Trane S9V2B080U4 80,000 BTU 96% AFUE Two-Stage Variable Speed Gas Furnace error E09?

DIY cost: $30-$50. Professional repair typically costs $130-$200. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Trane S9V2B080U4 80,000 BTU 96% AFUE Two-Stage Variable Speed Gas Furnace have?

The Trane S9V2B080U4 80,000 BTU 96% AFUE Two-Stage Variable Speed Gas Furnace has 8 other known error codes, including: E01 (Pressure Switch Failure), E02 (Ignition Failure), E03 (High Limit Switch Open), E04 (Inducer Motor Failure), E05 (Flame Sensor Failure), and 3 more.

Which other Trane models have the E09 error?

Error code E09 also appears on 1 other Trane model: XR13 13 SEER Central Air Conditioner. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the Trane S9V2B080U4 80,000 BTU 96% AFUE Two-Stage Variable Speed Gas Furnace have?

The Trane S9V2B080U4 80,000 BTU 96% AFUE Two-Stage Variable Speed Gas Furnace has 8 other known error codes:

E01 — Pressure Switch Failure (2 fixes)
E02 — Ignition Failure (2 fixes)
E03 — High Limit Switch Open (2 fixes)
E04 — Inducer Motor Failure (2 fixes)
E05 — Flame Sensor Failure (2 fixes)
E06 — Blower Motor Overload (2 fixes)
E07 — Limit Switch Shorted (2 fixes)
E08 — Control Board Communication Error (2 fixes)

Which other Trane models have the E09 error?

Error code E09 also appears on 1 other Trane model:

XR13 13 SEER Central Air Conditioner (air conditioner) · 2 fixes

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