GOODMAN DIAGNOSTIC REFERENCE DUAL 7-SEGMENT DISPLAY (TWO-STAGE VARIABLE-SPEED) DOC GOODMAN-EA

Goodman furnace: Reversed Line Polarity (EA)

Q: What does EA mean on a Goodman furnace?

Reversed Line Polarity (EA). 115V or 24V power leads are reversed — the furnace refuses to run. Same fix family as the continuous-flash code on flash models.

EA YOUR LIGHT: DISPLAY CODE EA — MATCH IT ABOVE

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.

See what causes this code ↓ Get repair quotes near you

Line-voltage wiring correction.

What causes it (in order of likelihood)

Reversed hot/neutral or transformer leads, poor ground TECH

Applies to

GMVC96 · GCVC96 · AMVC96 · ACVC96

Different Goodman generations use different code maps. If your series isn't listed, don't assume this meaning — check your blower-door label.

Verified against Goodman GMVC96/GCVC96 Service Manual, p.44

Last verified 2026-07-06 · how we verify