American Standard S8X1 furnace code E2.2: Flame lost after lighting
Professional repair
What does E2.2 mean on an American Standard Silver S8X1 gas furnace display? E2.2 means flame was established and then lost, and this repeated until ten recycles accumulated in one heat call. The control then enters a one-hour lockout.
This condition involves the gas or combustion side. If you smell gas or a CO alarm sounds: leave, then call your gas utility. Diagnostic info here is reference — combustion repairs are for licensed technicians. All six emergency signs →
Safe checks before calling
Note how long heat runs before stopping and whether the blower continues afterward. Give that pattern to the technician with the code.
Flame-current measurement, burner inspection and gas-supply checks are done with the furnace operating. These live tests belong to a qualified technician, not the homeowner.
Possible causes
- Flame sensor condition weakening the detected flame signal TECH
- Dirty burners producing an unstable flame TECH
Parts for this code
No model-verified part number is listed here. Have the fault diagnosed and the correct part matched to your furnace before ordering.
Questions about this code
What does E2.2 mean on an American Standard Silver S8X1 gas furnace display?
E2.2 means flame was established and then lost, and this repeated until ten recycles accumulated in one heat call. The control then enters a one-hour lockout.
How do I fix American Standard S8X1 furnace code E2.2?
Book service and report when heat stops in the cycle. The technician identifies why an established flame drops out and fixes that cause. Restarting to see if it holds only adds failed cycles.
How much does it cost to fix American Standard S8X1 furnace code E2.2?
Diagnosis comes first because flame loss can follow from sensing, burner or gas-supply problems. Labor and any parts depend on the confirmed cause.
Related symptoms
These symptoms can appear alongside this code. The link is an association, not a diagnosis, and code meanings vary by brand, model and control.
Applies to
S8X1A040M3PSCA · S8X1B040M2PSCA · S8X1B060M4PSCB · S8X1B080M4PSCB · S8X1C080M5PSCA · S8X1C100M5PSCB · S8X1D120M5PSCA
Different American Standard generations use different code maps. If your series isn't listed, don't assume this meaning — check your blower-door label.
Verified against Installation, Operation, and Maintenance — Upflow/Downflow/Horizontal Gas-Fired,1–Stage and2–Stage Induced Draft Furnaces with High Efficiency Motor, p.58
Verified against Installation, Operation, and Maintenance — Upflow/Downflow/Horizontal Gas-Fired,1–Stage and2–Stage Induced Draft Furnaces with High Efficiency Motor, p.64
Verified against Installer’s Guide — Upflow/Downflow/Horizontal Gas-Fired,1–Stage and2–Stage Induced Draft Furnaces with High Efficiency Motor, p.58
Last verified 2026-10-07 · page updated 2026-10-07 · how we verify
Related American Standard furnace codes
These codes use the same american standard silver s8x1 furnace control display (2024 iom) system.