Goodman Furnace Code EEE
Hard lockout
The furnace control board detected an internal fault in itself and stopped.
Manual wording: “Furnace control board has detected an internal fault.”
Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)
Likely causes, most common first
- 120VAC power wiring loose or damaged
- Poor ground wire
- Damaged or miswired 120V or 24V wiring on the furnace
What you can safely check yourself
- Turn power off to the furnace at its switch for at least 3 minutes, then back on, to see if the code clears
When to call a technician
If EEE returns, the control board and its power wiring need a technician. The manual warns not to replace other components based on this code.
A Goodman furnace throwing this code repeatedly has a reason — clearing the code without fixing the cause just hides it.
Sources
- *R9T96 & *D9T96 Two-Stage Gas Furnaces (Type FSP Category IV) - IOG-2038E (Daikin Comfort Technologies (Goodman brand), Goodman GR9T96, GD9T96 two-stage 96% AFUE gas furnaces (current R-32 era production)) · checked 2026-08-25
- Installation Instructions for *M9S80 & *C9S80* Gas Furnace, Category I - IOG-2030B (Daikin Comfort Technologies (Goodman brand), Goodman GM9S80, GC9S80 single-stage 80% AFUE gas furnaces) · checked 2026-08-25