Goodman Error Code EAF: Goodman Code EAF - Airflow Error
How to Fix Goodman Code EAF
- Step 1: Replace your air filter with a new, clean filter. Make sure you install it with the arrows pointing in the direction of airflow.
- Step 2: Check all return air grilles and supply registers to ensure they are not blocked by furniture, rugs, or other obstructions.
- Step 3: If the problem persists after replacing the filter and clearing any obstructions, contact a qualified HVAC technician to diagnose and repair the furnace.
How to Reset Goodman Code EAF
- Turn off the furnace power switch, usually located on or near the unit.
- Turn off the circuit breaker for the furnace. Wait 30 seconds.
- Restore power at the breaker and flip the furnace switch back on.
- Set the thermostat to call for heat. If the error code returns after 2-3 ignition attempts, the fault requires repair.
Resetting clears the code from the display but does not fix the underlying fault. If the code returns after reset, proceed to the diagnostic steps above.
What Does Goodman Error Code EAF Mean?
The 'EAF' error code on your Goodman furnace indicates an Airflow Error. Your furnace's control board monitors the air pressure inside the unit using a pressure switch. If the furnace doesn't detect enough airflow when the blower motor is running, it assumes there's a blockage or a problem with the blower itself. To protect the furnace from overheating or other damage, it shuts down and displays the EAF error. This error is important because insufficient airflow can lead to the furnace overheating, which can damage components like the heat exchanger. A cracked heat exchanger can leak dangerous carbon monoxide into your home. While this code doesn't guarantee a cracked heat exchanger, it's important to address the airflow issue promptly to prevent further problems.
Common Causes
- Dirty air filter restricting airflow.
- Blocked return air grilles or supply registers.
- Blower motor failure or reduced speed.
- Collapsed or disconnected ductwork.
- Faulty pressure switch or wiring.
Diagnostic Steps
| If... | Check | Expected |
|---|---|---|
| Air filter is clean and registers are open | Measure voltage to the blower motor during a heating cycle. | Voltage should match the furnace's specifications (e.g., 120 VAC). Low voltage indicates a wiring or control board issue. |
| Blower motor voltage is correct | Inspect the blower wheel for debris or obstructions. | Blower wheel should be clean and rotate freely. |
| Blower wheel is clear | Use a manometer to measure static pressure across the air filter and the supply/return ducts. | Static pressure should be within the manufacturer's specified range (typically 0.5-0.8 inches of water column). |
Applicable Goodman Models
Recall Notices
Issued: November 1, 2021
Affected models: Molded plastic evaporator coil drain pans in up-flow condensing gas furnaces
Drain pans can overheat, melt, and deform, posing a fire hazard. Recall expanded January 2024.
Replacement Parts
| Part | OEM Number | Est. Cost | Where to Buy |
|---|---|---|---|
| Air Filter | — | — | — |
| Blower Motor | B13400-354 | — | Find Part |
| Pressure Switch | 0130F00030 | — | Find Part |
Related Codes on Same Models
Other codes that affect the same Goodman model families as EAF.
| Code | Description | Severity |
|---|---|---|
| 1 | System Lockout | Warning |
| 2 | Pressure Switch Stuck Closed | Warning |
| 3 | Pressure Switch Stuck Open | Warning |
| 4 | Open High Limit Switch | Warning |
| 5 | Flame Sensed With Gas Valve Off | Warning |
| 6 | Open Rollout Switch | Warning |
| 7 | Low Flame Signal | Warning |
| 8 | Ignitor Error | Warning |
| CONTINUOUS | Reversed Polarity | Warning |
| STEADY-ON | Normal Operation | Info |