Goodman furnace code EA: Reversed Line Polarity
Professional repair
What does EA mean on a Goodman furnace? 115V or 24V power leads are reversed — the furnace refuses to run. Same fix family as the continuous-flash code on flash models.
Before you touch anything: the six signs that mean stop troubleshooting and call a pro →
Line-voltage wiring correction.
What causes it (in order of likelihood)
- Reversed hot/neutral or transformer leads, poor ground TECH
Parts for this code
No specific part number is verified for this code — it typically points at wiring, power, a blown fuse, or communication between components rather than one standard replacement part. If your diagnosis does land on a replaceable component, match its part number against your model's parts list before ordering.
Questions about this code
What does EA mean on a Goodman furnace?
115V or 24V power leads are reversed — the furnace refuses to run. Same fix family as the continuous-flash code on flash models.
How do I fix Goodman furnace code EA?
This is wiring work. Don't open panels or test voltage yourself; have an electrician or HVAC technician correct it.
How much does it cost to fix Goodman furnace code EA?
Cost depends on where the reversed leads are and how much rewiring is needed. Ask for a quote once the wiring fault has been located.
Applies to
GMVC96 · GCVC96
Different Goodman generations use different code maps. If your series isn't listed, don't assume this meaning — check your blower-door label.
Same control platform, same code: Amana furnace code EA
Verified against Goodman GMVC96/GCVC96 Service Manual, p.44
Last verified 2026-07-06 · page updated 2026-10-03 · how we verify
Related Goodman furnace codes
These codes use the same dual 7-segment display (two-stage variable-speed) system.