Goodman Error Code EE0: Goodman Code EE0 - Communication Error
How to Fix Goodman Code EE0
- Step 1: Check the thermostat batteries and replace them if needed. A low battery can sometimes cause communication issues.
- Step 2: Cycle power to the unit by turning off the breaker that supplies power to the indoor unit for 5 minutes, then turn it back on. This can sometimes reset the system.
- Step 3: If the error persists after these steps, contact a qualified HVAC technician for diagnosis and repair.
How to Reset Goodman Code EE0
- 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 EE0 Mean?
The EE0 error code on your Goodman furnace or air handler indicates a communication problem between the main control board and other components, most often the blower motor. Think of it like a broken telephone line – the different parts of your system can't talk to each other. This prevents the unit from operating correctly, and it's why your system has shut down. The specific components involved can vary, but it always means the unit has detected a loss of communication on the data network.
Common Causes
- Loose or corroded wiring connections on the communication bus (ABCD) between the control board and blower motor.
- Faulty blower motor control module (ECM motor failure).
- Defective main control board in the furnace or air handler.
- Wiring harness damage (rodent damage, cuts, or kinks) interrupting communication signals.
Diagnostic Steps
| If... | Check | Expected |
|---|---|---|
| Unit displays EE0 error | Measure voltage between the A and B terminals on the communication bus at the control board. | Should read approximately 24V DC. |
| Communication voltage is absent or unstable | Inspect wiring harness and connections between the control board and blower motor for damage or corrosion. | Wiring and connections are intact and free from corrosion. |
| Wiring appears OK, but communication is still down | Disconnect the blower motor communication wires and measure the resistance of the motor windings. | Resistance should match the motor manufacturer's specifications. An open or shorted winding indicates a motor fault. |
| Communication voltage is present and wiring is good | Replace the control board. | EE0 error clears. |
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 |
|---|---|---|---|
| Blower Motor ECM | B13400-387 | — | Find Part |
| Main Control Board | B1809913 | — | Find Part |
| Wiring Harness | — | — | — |
Related Codes on Same Models
Other codes that affect the same Goodman model families as EE0.
| 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 |