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GOODMAN DIAGNOSTIC REFERENCE MODULATING FURNACE (GMVM97) — DUAL 7-SEGMENT DISPLAY DOC GOODMAN-GMVM97-E5

Goodman furnace: Open Fuse (E5)

E5 YOUR LIGHT: DISPLAY CODE E5 — MATCH IT ABOVE

Professional repair

What does E5 mean on a Goodman GMVM97 furnace? The board's low-voltage fuse is open — almost always a short in the 24V (thermostat) wiring.

GOOD NEWS: THE FIRST CHECKS ARE FREE AND TAKE MINUTES.

Try these first — in this order

Find the short, replace with the SAME fuse rating.

1Check: Nicked/shorted thermostat wire; blown blade fuse
Still showing the code? See every cause ↓ Get repair quotes near you

Fuse blows again = live short tracing.

What causes it (in order of likelihood)

  1. Nicked/shorted thermostat wire; blown blade fuse DIY-CHECKABLE

Applies to

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.64/68

Last verified 2026-07-06 · how we verify