Goodman GMVC960803BN Error Code EEb: Internal Gas Valve Error
What Does Code EEb Mean?
EEb on the Goodman GMVC960803BN is an internal gas valve error: during a call for heat the control module commands the gas valve to open, but detects that the valve is not being energized. The burners never light and the furnace fails to operate.
The gas valve on this furnace runs on 24VAC delivered through a relay on the integrated control module. If the wiring between the relay output and the valve connector is miswired, open, or has a broken conductor, the valve never receives power. An open solenoid coil inside the valve itself produces the same result. A gas valve relay stuck in the open position on the control board is another cause, where the relay simply cannot close to complete the circuit.
It is important to understand EEb as the exact opposite of EEC: EEb means the valve is NOT energized when it should be, while EEC means the valve IS energized when it should not be. Any diagnosis or repair of the gas valve, its wiring, or the control board must be handled by a qualified technician.
What You'll Notice
- The furnace will not fire and the burners never light
- The 7-segment display shows EEb
- The inducer may run through its pre-purge, but no gas ignition follows
- The fault often appears after service or wiring work involving the gas valve circuit
Common Causes
| Cause | Likelihood | DIY? |
|---|---|---|
| Miswired gas valve circuit | Most common | ✗ Call a pro → |
| Open gas valve circuit | Common | ✗ Call a pro → |
| Gas valve relay stuck on control board | Common | ✗ Call a pro → |
How This Is Diagnosed
A technician checks for 24VAC at the gas valve terminals during an active call for heat. If voltage is present but the valve does not open, the valve solenoid has failed; if voltage is absent, the wiring between the control board relay and the valve, and the relay itself, are tested to locate the open circuit.
When to Call a Professional
This code involves components that are not homeowner-serviceable, so have a licensed HVAC technician diagnose and repair it. Keep in mind:
- EEb is present and the gas valve circuit must be tested with a voltmeter during an active call for heat
- The gas valve is confirmed faulty and must be replaced by a licensed professional
- The gas valve relay on the control board has failed open and the control module needs replacement
Frequently Asked Questions
What is the difference between EEb and EEC?
EEb means the gas valve is NOT energized when it should be, so the furnace cannot fire. EEC means the valve IS energized when it should not be, which is a safety shutdown. They are opposite conditions on the same circuit.
Can I repair the gas valve wiring myself?
No. Any work on the gas valve or its 24V circuit must be performed by a licensed HVAC technician for safety. Repair cost varies by region and depends on whether the valve, wiring, or board is at fault.
✓ Verified against manufacturer service manual — March 2026