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

Goodman GMVM97 furnace code E5: Open Fuse

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.

Before you touch anything: the six signs that mean stop troubleshooting and call a pro →

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

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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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Questions about this code

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.

How do I fix Goodman GMVM97 furnace code E5?

Finding the short and replacing the fuse with the correct rating is technician work, since the fuse can blow again if the short remains.

How much does it cost to fix Goodman GMVM97 furnace code E5?

Cost depends mostly on how long it takes to locate the short. A visibly damaged thermostat wire may be quick, while a hidden short takes longer.

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 · page updated 2026-10-03 · how we verify

Related Goodman furnace codes

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

Pattern	Meaning
E4display E4	Flame Detected With No Call (E4)
E6display E6	Low Flame Signal (E6)
E3display E3	Open High-Limit Switch (E3)
E7display E7	Igniter Fault or Improper Grounding (E7)

See all Goodman furnace fault codes →

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