Amana
EA
LockoutReversed polarity / poor ground
L1/N reversed or chassis ground missing. Furnace will not operate.
Walk EA in Diagnose
9 plates — walk the one on the cabinet
First check
1 Measure µA while it is running
Do not clean first and guess. Series-µA the rod on Amana AMVC96 during a call. Falling µA is oxide, ground, or a dying flame. A hard drop is often the pressure switch or limit opening, not the rod. Hot and neutral at the IFC, not just the disconnect.
Expect: Flame rod: µA per this IFC sticker, not the AR9T96 card. Rising while running is the goal.
The rest of the walkthrough is Diagnose.
On the plates
- Hot and neutral at the IFC, not just the disconnect.
- Burner box to IFC ground screw.
- Twinned jobs — follow the twinning kit, then look at EEJ.
- Hot and neutral at the IFC. Burner-box ground screw.
- 24V transformer leads swapped on a replacement IFC.
- Hot and neutral at the IFC.
- Burner-box ground screw.
Plates that use EA
Same number, other makers
EA on Amana is not the same code on these plates.