E5Goodman, Amana, Daikin · GMVM96 · Furnace

Goodman, Amana, Daikin GMVM96 error code E5

Open low voltage fuse

Goodman is the platform name, and your unit may not say it

Amana AMVM96 / ACVM96, Daikin GMVM96 platform are the same board with a different badge, so this page covers all of them. The fault, the checks and the parts are identical, which is why there is one page rather than one per brand.

Needs attention soon

Quick answer

On Goodman GMVM96 (2010s), E5 is a fault. It means open low voltage fuse. A first thing to check: Blown low voltage fuse.

Applies to: Goodman GMVM96; Goodman and Amana GMVM96, GMVM97, GCVM96 alphanumeric codes · Furnace · 2010s
Type of code: Fault; Urgency: Needs attention soon
First safe check: Look for a blown fuse on the control board and check whether it is a glass type so you can see the break.

Checked 2026-09-26

What E5 means on this model

The control runs on a low voltage 24 volt circuit, protected by a small fuse on the board or harness. That fuse has blown, which means either an overload on the 24 volt side or a failed component. The board cannot do anything at all until this is sorted.

Symptoms you will notice

Furnace is completely dead, no blower, no display
Thermostat shows a call for heat but nothing happens
No status display at all

Common causes

The code tells you what the control detected, not which part failed. These are the causes we see most often, roughly in order of likelihood:

Blown low voltage fuse
Shorted transformer or control board
Shorted wiring, often where a technician has spliced in an add-on
Failed zone or humidistat control

What you can safely check

These are homeowner-level checks. None of them need you to open a live electrical compartment or work on gas.

Look for a blown fuse on the control board and check whether it is a glass type so you can see the break.
Look for a control or add-on wiring splice that is shorting out.

Do not do these

×Do not repeatedly replace the fuse. If it blows again, the circuit still has a fault.
×Do not bridge the fuse with wire.

When to call a technician

Book a technician, do not keep resetting it

This fault will not clear on its own. Every power cycle gives the control one more failed attempt, and repeated attempts are what turn a cheap part replacement into a seized or contaminated system.

This is a fuel-burning appliance, so treat anything involving a burner, gas valve or flue as technician work. If you smell gas at any point, leave the property and call the gas utility from outside rather than continuing to diagnose.
If the appliance has stopped mid-cycle, is making a noise you have not heard before, or smells burnt, stop reading here and call. Those are symptoms of something the fault code does not describe well enough.

Swapping a fuse is easy. Finding and fixing the short is not.

What it costs to fix

Parts

Fuse under $5. Control board $150 to $400. 24 volt transformer $40 to $120.

Labor

One to two hours.

DIY or technician