Amana Furnace Code 11
Hard lockoutShown as: 11 flashes, then a pause, repeating
Igniter open. The control cannot see a complete circuit through the hot surface igniter - usually a cracked igniter or a disconnected igniter plug.
Manual wording: “Igniter Open”
Documented for: Amana AMES80, ACES80 (PCBBF145 control board)
Likely causes, most common first
- Improperly connected igniter
- Bad igniter
- Poor unit ground
- Poor burner ground
When to call a technician
Hot surface igniters are fragile and live inside the burner compartment. Replacement is a technician job.
A Amana furnace throwing this code repeatedly has a reason — clearing the code without fixing the cause just hides it.
Source
- Installation Instructions - *MES80 / *CES80 Gas Furnace, Category I - IOG-2021H (Daikin Comfort Technologies (Amana brand), Amana AMES80, ACES80 80% AFUE gas furnaces (PCBBF145 control board)) · checked 2026-08-25