Amana AMVM970803BN Error Code EEA: Reversed Polarity
What Does Code EEA Mean?
Error code EEA on the Amana AMVM970803BN indicates the furnace has detected that the 115-volt AC power supply wiring is connected with reversed polarity, or that the unit grounding is inadequate. The furnace shuts down because reversed polarity creates unsafe electrical conditions that can damage the control module and pose a shock hazard.
Reversed polarity occurs when the hot (black) and neutral (white) wires at the furnace's power connection are swapped. The control module monitors the phase relationship between the hot, neutral, and ground conductors, and can detect when hot and neutral are reversed. A poor unit ground means the grounding conductor has high resistance or is not properly connected, which affects the control module's ability to safely reference the neutral conductor.
An electrician or HVAC technician must verify the polarity of the 115-volt wiring at the furnace's electrical connection and at the circuit breaker panel, correct the wiring if it is reversed, and confirm the grounding conductor is intact and provides a low-resistance path to the electrical system ground. This is a wiring deficiency that should be corrected even if the furnace could be made to run, as reversed polarity creates ongoing safety and equipment risks.
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 → |
When to Call a Professional
Contact a licensed HVAC technician if:
- EEA displays — an electrician or HVAC technician must verify and correct the polarity of the 115VAC power supply wiring
- The unit grounding conductor must be inspected and confirmed to provide a low-resistance path to ground
- Do not attempt to bypass or ignore reversed polarity — correct the wiring before operating the furnace
✓ Verified against manufacturer service manual — March 2026