Amana furnace error codes
Use this table for the two-character display on Amana AMVC96 and ACVC96 furnaces. Match the code exactly; its detail page explains the fault and what you can check before calling for service.
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Reading the Amana display
These furnaces show letters and numbers rather than counted flashes: E codes cover ignition, pressure, limit, and wiring faults, b codes cover the blower motor, and d codes cover memory card data. ON is a normal display. Write the code down exactly, since similar-looking codes can point to very different problems.
What this Amana page covers
This page covers only the AMVC96 and ACVC96 two-stage variable-speed display codes. These models share a control platform with Goodman, and the definitions come from Goodman-platform source documents for that shared control. Goodman single-LED flash codes and GMEC96 or GMVM97 codes are not covered here and should not be applied to these models.
- Dual 7-segment display (two-stage variable-speed): AMVC96 · ACVC96
Amana display code quick reference
| Code or flash pattern | Meaning | Model family |
|---|---|---|
| E0display E0 | Amana furnace code E0: Ignition Lockout Three failed ignition cycles — the control can't establish measurable combustion and locks out. Same reset as flash models: thermostat OFF 5–20 s, or kill power ≥5 s. | AMVC96 · ACVC96 |
| E1display E1 | Amana furnace code E1: Low-Stage Pressure Switch Stuck Closed The low-stage pressure switch reads closed while the inducer is off. The control waits until the fault clears. Cause per manual: faulty switch or shorted wiring. | AMVC96 · ACVC96 |
| E2display E2 | Amana furnace code E2: Low-Stage Pressure Switch Stuck Open The low-stage pressure switch doesn't close within 5 minutes of the inducer starting → 1-hour lockout, then auto-retry. Official causes: disconnected hose, faulty switch or wiring, blocked venting. | AMVC96 · ACVC96 |
| E3display E3 | Amana furnace code E3: Open Primary, Auxiliary, or Rollout Limit One of three protective limits opened: primary (overheat), auxiliary, or flame rollout. Blowers run until it closes. Official causes: dirty filter or duct restriction, faulty limit, blower issue, blocked flue. | AMVC96 · ACVC96 |
| E4display E4 | Amana furnace code E4: Flame Sensed With No Call for Heat Flame detected while the gas valve is de-energized. Blowers run continuously as protection. Same emergency profile as 5 flashes on flash-code models. | AMVC96 · ACVC96 |
| E5display E5 | Amana furnace code E5: Open Fuse The control detects its onboard fuse open and inhibits all operation except displaying the code. Official probable cause: a short in the low-voltage wiring. | AMVC96 · ACVC96 |
| E6display E6 | Amana furnace code E6: Low Flame Sense Signal Furnace runs, but the flame-sensor microamp signal fell below spec. Official: coated/oxidized sensor, wrong sensor position, or lazy flame from improper gas pressure. | AMVC96 · ACVC96 |
| E7display E7 | Amana furnace code E7: Igniter Fault or No Ground Official: check for a broken or improperly connected igniter; check for proper ground and correct. | AMVC96 · ACVC96 |
| E8display E8 | Amana furnace code E8: High-Stage Pressure Switch Stuck Closed The high-stage pressure switch is stuck closed when high stage is commanded — the furnace runs on LOW stage only regardless of thermostat demand. | AMVC96 · ACVC96 |
| E9display E9 | Amana furnace code E9: High-Stage Pressure Switch Stuck Open High-stage switch won't close. Official checklist: blocked or pinched switch hose, blocked flue and/or intake pipe, blocked drain, weak induced-draft blower, or a failing switch. | AMVC96 · ACVC96 |
| EAdisplay EA | Amana furnace code EA: Reversed Line Polarity 115V or 24V power leads are reversed — the furnace refuses to run. Same fix family as the continuous-flash code on flash models. | AMVC96 · ACVC96 |
| d0display d0 | Amana furnace code d0: No Shared Data The control has no shared data set (it drives the variable-speed motor and airflow math). The furnace cannot function until a model-specific memory card loads the data. Display shows ON when accepted. | AMVC96 · ACVC96 |
| d4display d4 | Amana furnace code d4: Invalid Memory Card Data The control rejected the shared data set — memory cards are model-specific and a card for a different model will be refused. | AMVC96 · ACVC96 |
| b0display b0 | Amana furnace code b0: ECM Blower Motor Not Running The control can't detect the ECM blower running when it should be. Official causes: loose/disconnected wiring between motor and control, an open inductor (¾ HP and 1 HP motors), or a failed ECM motor. | AMVC96 · ACVC96 |
| b1display b1 | Amana furnace code b1: ECM Motor Communications Lost The furnace control can't talk to the ECM blower — the furnace won't operate. Causes: loose harness, failed motor, or failed control. | AMVC96 · ACVC96 |
| b2display b2 | Amana furnace code b2: Motor Horsepower Mismatch The connected motor's horsepower doesn't match the shared data set — the furnace refuses to run. Fix: correct motor, or correct data via the proper memory card. | AMVC96 · ACVC96 |
| b3display b3 | Amana furnace code b3: ECM Motor in a Limiting Condition The ECM hit a power, speed, or temperature limit and reduced output — the furnace keeps running at reduced airflow. Officially caused by blocked/clogged filters, restrictive or undersized ductwork, blocked inlet, or high ambient heat. | AMVC96 · ACVC96 |
| b4display b4 | Amana furnace code b4: Motor Trips The ECM motor sensed a loss of control or became overloaded and shut down. | AMVC96 · ACVC96 |
| b5display b5 | Amana furnace code b5: Blower Motor Locked Rotor The ECM blower motor failed to start 10 times in a row, and the furnace won't operate while the motor can't start. The service manual's probable causes are an obstruction in the blower housing or wheel, seized motor bearings, or a failed blower motor. | AMVC96 · ACVC96 |
| b6display b6 | Amana furnace code b6: Motor Over/Under Voltage or Over-Temperature Trip The ECM blower motor shut itself down because line voltage was too high (over 140 VAC) or too low (under 70 VAC), or because its power module overheated. The motor restarts once the condition clears, but the furnace can't run while the motor is off. For overheating, the manual names high ambient temperature or heavy motor loading as the likely cause. | AMVC96 · ACVC96 |
| b7display b7 | Amana furnace code b7: Incomplete Parameters Sent to Motor The ECM blower motor didn't get all the information it needs to operate, an event kept it from running, or it failed to start 40 times in a row. Probable causes in the manual: an intermittent wiring connection between the control and the motor, a furnace control error, or any of the conditions behind codes b4, b5 and b6. | AMVC96 · ACVC96 |
| b9display b9 | Amana furnace code b9: Low Indoor Airflow Indoor airflow fell below the minimum the control calculates from its shared data. The furnace keeps running with the reduced airflow and, if it was on high stage, steps down to low stage to try to recover. It stops if airflow drops to 0 CFM. The manual's probable causes are blocked or clogged filters, blocked or restrictive ductwork, and undersized ductwork. | AMVC96 · ACVC96 |
| ONdisplay ON | Amana furnace code ON: Display Reads ON — Normal Normal state. It also confirms the control accepted memory-card data after a board or card procedure. | AMVC96 · ACVC96 |
Same control platform, other brand names: Goodman furnace codes
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