Amana AMVM970803BN Error Code EEA: Reversed Polarity
What Does Code EEA Mean?
Code EEA means the furnace's 115-volt AC supply is wired with reversed polarity (line and neutral swapped) or the unit ground is poor. The integrated control module needs correct polarity and a solid ground for its flame-sensing and safety circuits to work reliably, so it stops and displays EEA.
Flame sensing on this furnace depends on the current path through the flame referenced to a proper neutral and ground. Reversed polarity or a bad ground disrupts that path, which is why the board treats it as a fault that prevents operation.
EEA belongs to the electrical-supply family with E10 (grounding fault) and EE5 (fuse/low-voltage short). It commonly appears right after installation or electrical work where the line and neutral were swapped, and its correction is line-voltage work for a qualified person.
What You'll Notice
- The furnace will not operate and the display shows EEA
- The fault appears after installation or electrical work near the furnace
- The furnace may have never run since being connected to power
- No ignition or blower activity on a call for heat
Common Causes
| Cause | Likelihood | DIY? |
|---|---|---|
| 115V AC wiring connected with reversed polarity | Most common | ✗ Call a pro → |
| Poor or missing unit ground | Common | ✗ Call a pro → |
How This Is Diagnosed
A technician verifies the 115-volt line and neutral connections at the furnace for correct polarity and checks the unit ground for a solid connection, correcting the wiring where it is reversed or the ground where it is poor.
Because this is line-voltage supply wiring, it must be corrected by a qualified HVAC technician or electrician and is not a homeowner repair.
When to Call a Professional
This code involves components that are not homeowner-serviceable, so have a licensed HVAC technician diagnose and repair it. Keep in mind:
- The display shows EEA and the furnace will not run
- The code appeared right after installation or an electrical change
- You cannot safely verify line/neutral polarity and grounding
Frequently Asked Questions
What causes reversed polarity?
The line (hot) and neutral wires feeding the furnace were connected to the wrong terminals, often during installation or an electrical change. A technician or electrician swaps them back and verifies the ground.
Why does polarity matter for a furnace?
The flame-sensing and safety circuits reference a correct neutral and ground. Reversed polarity or a poor ground disrupts flame sensing, so the board refuses to operate and shows EEA.
✓ Verified against manufacturer service manual — March 2026