Goodman Furnace Code EEA
Soft lockout
Line polarity is reversed. The 115 volt hot and neutral feeding the furnace are swapped, or the furnace ground is poor, so the control refuses to run.
Manual wording: “Polarity if 115 volt AC is reversed.”
Documented for: Goodman GMVC96, GCVC96, GMVM97, GCVM97, GM9S80, GC9S80, GR9S80, GD9S80, GR9T96, GD9T96 (seven-segment display controls)
Likely causes, most common first
- Polarity of 115 volt AC power to furnace or integrated control module is reversed
- Poor furnace ground
What you can safely check yourself
- If the furnace was just installed or the circuit was recently rewired, tell the installer - this code follows wiring changes
When to call a technician
Fixing polarity and ground is electrical work. Call the installer or an electrician.
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 *CVC96* & *MVC96* Two-Stage Gas Furnace - IOG-2015L (Daikin Comfort Technologies (Goodman brand), Goodman GMVC96, GCVC96 two-stage variable-speed 96% AFUE gas furnaces) · checked 2026-08-25
- Installation Instructions for *R9S80 & *D9S80* Gas Furnace, Category I - IOG-2035C (Daikin Comfort Technologies (Goodman brand), Goodman GR9S80, GD9S80 single-stage 80% AFUE gas furnaces (current production)) · checked 2026-08-25