GOODMAN DIAGNOSTIC REFERENCE MODULATING FURNACE (GMVM97) — DUAL 7-SEGMENT DISPLAY DOC GOODMAN-GMVM97-E8

Goodman furnace: High-Stage Pressure Switch Stuck Closed (E8)

High-Stage Pressure Switch Stuck Closed (E8). The high-stage switch reads closed at the start of the heating cycle.

E8 YOUR LIGHT: DISPLAY CODE E8 — MATCH IT ABOVE

Professional repair

What does E8 mean on a Goodman GMVM97 furnace? The high-stage switch reads closed at the start of the heating cycle.

Two-stage pressure-circuit diagnosis. DIY part cost: $25–60 — a pro visit for this class of fault typically runs $150–350.

What causes it (in order of likelihood)

Pressure Switch

$25–60 · Model-specific — match to your unit’s parts list

Always match parts against your model's parts list — part numbers vary within a series.

GMVM97

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 GMVM97-Service, p.65/68

Last verified 2026-07-06 · how we verify