- Home
- Goodman
- gas furnaces
- Code IF
Goodman gas furnace code IF: Internal control board fault
Gas furnace, Canada and United States
The control board has found an internal fault, and the furnace does not run. A ComfortNet thermostat shows EE.
This needs a licensed gas technician. There is nothing safe to check yourself. Leave the covers on and book a professional.
What causes it
-
Wiring to the furnace or the control board is wrong.
-
The power to the furnace and control board is unstable or out of specification.
-
The control board has failed and needs replacing.
How to read this code on your unit
The code shows on the two-character display on the furnace control board, which you can see through the sight glass on the blower compartment. On means normal operation and a blank display means the board has no power. A ComfortNet thermostat, if fitted, shows the same codes with a short message and uses EE for an internal fault.
Booking a licensed gas technician
Book a licensed gas technicianlicensed gas technician
- Turn the unit off and leave the covers on. Gas components must only be serviced by a licensed technician.
- Note the code, how often it appears, and the model and serial numbers from the rating label.
- Book a licensed gas technician and give them those details.
Models that show this code
14 models in 2 ranges
| Range | Models |
|---|---|
| GMVM96 / GCVM96 / AMVM96 / ACVM96 | GMVM960603BX, GMVM960805CX, GMVM961005DX, GMVM961155DX |
| GMVM97 / GCVM97 / AMVM97 / ACVM97 | GMVM970603BN, GMVM970803BN, GMVM970804CN, GMVM971005CN, GMVM971205DN, AMVM970603BN, AMVM970803BN, AMVM970804CN, AMVM971005CN, AMVM971205DN |
Where this comes from
- GMVM97/GCVM97 (revision AA) modulating gas furnace installation instructions (IOG-2007H) , page 53, 58
- GMVM96/GCVM96 modulating gas furnace installation instructions (IO-406E) , page 52
Checked against the manufacturer's manual on 13 October 2026.
Other Goodman gas furnace codes
| Code | Meaning | What you can do |
|---|---|---|
| EEE | Internal control board fault | Call a pro |
| EEJ | Inducer relay error | Call a pro |
| EEL | Igniter circuit problem | Call a pro |
| EEn | Igniter open | Call a pro |
| EF | Condensate blockage (depends on model) | Call a pro |
| IdL | Idle, normal operation | You can often fix it |
| 1 amber flash | Low-stage heat call | You can often fix it |
| 2 amber flashes | High-stage or single-stage heat call | You can often fix it |
| 3 amber flashes | Second-stage heat call without first stage | Safe checks first, then a pro |
| 4 amber flashes | Cooling call without a fan signal | Safe checks first, then a pro |
| amber light flashing rapidly | Weak flame signal | Call a pro |
| steady red light | Normal operation or control board internal fault (depends on model) | Depends on your model |
See all control board fault codes on gas furnaces across brands.