Amana furnace: Open Fuse (E5)
Professional repair
What does E5 mean on an Amana 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.
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
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.
Applies to
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
Related Amana fault codes
These codes use the same dual 7-segment display (two-stage variable-speed) system.
| Pattern | Meaning |
|---|---|
| E4 | Flame Sensed With No Call for Heat (E4) |
| E6 | Low Flame Sense Signal (E6) |
| E3 | Open Primary, Auxiliary, or Rollout Limit (E3) |
| E7 | Igniter Fault or No Ground (E7) |