Amana furnace code d4: Invalid Memory Card Data
Professional repair
What does d4 mean on an Amana furnace? The control rejected the shared data set — memory cards are model-specific and a card for a different model will be refused.
Before you touch anything: the six signs that mean stop troubleshooting and call a pro →
Obtain the card matching your model number from the distributor.
What causes it (in order of likelihood)
- Wrong memory card for this furnace model TECH
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.
Questions about this code
What does d4 mean on an Amana furnace?
The control rejected the shared data set — memory cards are model-specific and a card for a different model will be refused.
How do I fix Amana furnace code d4?
Cards are model-specific, so a card for another model is refused. There's nothing for a homeowner to adjust; a technician needs a card matching your model number.
How much does it cost to fix Amana furnace code d4?
Cost depends on obtaining the correct card from a distributor and the visit time. If someone recently installed the wrong card, ask them about correcting it.
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.
Same control platform, same code: Goodman furnace code d4
Verified against Goodman GMVC96/GCVC96 Service Manual, p.44
Amana AMVC96/ACVC96 furnaces use the same control board and code map as the Goodman GMVC96/GCVC96 — the cited Goodman service manual is the platform document for both brands.
Last verified 2026-07-06 · page updated 2026-10-03 · how we verify
Related Amana furnace codes
These codes use the same dual 7-segment display (two-stage variable-speed) system.
| Pattern | Meaning |
|---|---|
| b0display b0 | ECM Blower Motor Not Running (b0) |
| d0display d0 | No Shared Data (d0) |
| b1display b1 | ECM Motor Communications Lost (b1) |
| EAdisplay EA | Reversed Line Polarity (EA) |