AMANA DIAGNOSTIC REFERENCE DUAL 7-SEGMENT DISPLAY (TWO-STAGE VARIABLE-SPEED) DOC AMANA-E5

Amana furnace: Open Fuse (E5)

Q: What does E5 mean on a Goodman furnace?

Open Fuse (E5). The control detects its onboard fuse open and inhibits all operation except displaying the code. Official probable cause: a short in the low-voltage wiring.

E5 YOUR LIGHT: DISPLAY CODE E5 — MATCH IT ABOVE

Professional repair

What does E5 mean on a Goodman furnace? The control detects its onboard fuse open and inhibits all operation except displaying the code. Official probable cause: a short in the low-voltage wiring.

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

Try these first — in this order

Inspect thermostat wire for bare spots, replace the blade fuse with the SAME rating.

1Check: Shorted 24V (thermostat) wiring — often nicked during other work

2Check: Board fuse blown

Still showing the code? See every cause ↓ Get repair quotes near you

Fuse blows again immediately = live short, tech time.

What causes it (in order of likelihood)

Shorted 24V (thermostat) wiring — often nicked during other work DIY-CHECKABLE
Board fuse blown DIY-CHECKABLE

Applies to

GMVC96 · GCVC96 · AMVC96 · ACVC96

Different Amana 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