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

Goodman furnace: Open Fuse (E5)

Q: What does E5 mean on a Goodman GMVM97 furnace?

Open Fuse (E5). The board's low-voltage fuse is open — almost always a short in the 24V (thermostat) wiring.

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)

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

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.

Goodman furnace replacement parts

Search by your model number (on the blower-door label) for an exact match

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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 Goodman GMVM97 Service Manual, p.64/68

Last verified 2026-07-06 · how we verify

Related Goodman fault codes

These codes use the same modulating furnace (gmvm97) — dual 7-segment display system.

Pattern	Meaning
E4	Flame Detected With No Call (E4)
E6	Low Flame Signal (E6)
E3	Open High-Limit Switch (E3)
E7	Igniter Fault or Improper Grounding (E7)

See all Goodman furnace fault codes →