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Goodman / Amana / Daikin GM9S96 / GC9S96 / GM9S92 Furnace Codes
The same service manual covers Amana AM9S92/AM9S96/AC9S96 and Daikin VM9S96/VC9S96. Older production of these models may use a flashing-LED board instead of the three-character display.
| Code | Meaning | What to check |
|---|---|---|
| EE0 | Lockout after too many ignition retries (3 total): failure to establish flame or loss of flame after it was established. | Gas supply, igniter, flame sensor, flue and intake blockage. How to fix → |
| EE1 | Pressure switch circuit closed at the start of the heating cycle. | Stuck pressure switch contacts or a short in the switch wiring. How to fix → |
| EE2 | Pressure switch circuit not closed. Inducer runs continuously, no furnace operation. | Pressure switch hose, blocked flue or intake pipe, blocked condensate drain, weak inducer, wrong switch, loose wiring. How to fix → |
| EE3 | Primary limit circuit open. Circulator blower runs continuously, no furnace operation. | Dirty filter, restrictive ductwork, wrong blower speed or failed blower motor, loose limit wiring. How to fix → |
| EE4 | Flame sensed with no call for heat. Inducer and blower run continuously. | Short to ground in the flame sense circuit; slow-closing gas valve leaving a lingering flame. |
| EE5 | Open fuse. No furnace operation. | Find the short in the low voltage wiring before replacing the fuse. How to fix → |
| EE6 | Low flame sense microamp signal (furnace still runs). | Clean the flame sensor, check its position in the flame, check gas pressure and combustion air. How to fix → |
| EEL | Igniter circuit problem. | Igniter connection or short, unit ground, igniter relay on the control. |
| EEA | 115 V AC polarity reversed, or poor unit ground. | Swap hot and neutral at the furnace; verify ground. |
| EEb | Gas valve not energized when it should be (external gas valve error). | Gas valve wiring and coil. |
| EEC | Gas valve energized when it should not be (internal gas valve error). | Control board; shut the gas off if the valve stays open. |
| E10 | Grounding fault or poor neutral connection. | Ground and neutral at the furnace and the panel. |
| E11 | Open rollout switch. | Find the cause (blocked flue, cracked heat exchanger, burner problem) before resetting. How to fix → |
| EEn | Igniter open. | Measure igniter resistance; check the harness. |
| EEJ | Inducer relay error. | Inducer wiring and the control's inducer relay. |
| EEH | Twinning error (twinned furnaces not working together). | Twin wiring between the two controls. |
| EEE | Internal fault or IRQ loss in the control board. | Control board. |
How to read the codes
- 'IdL' means idle, normal. The display shows the active fault.
- To see stored faults, press the left or right button until 'L6F' shows, then press the center button. To clear them, hold the center button for 5 to 30 seconds; the display flashes '- - -' three times.
- No display at all usually means no 115 V or 24 V to the control, a blown fuse or tripped breaker, or a dead control.
Codes point to a circuit, not a part. Test before replacing anything, and never jumper a limit, rollout or pressure switch to keep a furnace running. Gas and line-voltage work is for trained technicians.
Source: Goodman Service and Troubleshooting RS6612022R1 (GM9S92/GM9S96/GC9S96), 1 Stage Troubleshooting Codes, pp. 29–30. The "meaning" column follows the manufacturer's wording; "what to check" is our field summary. Always go by the label on the furnace you're working on.
Related
- How to read furnace LED flash codes
- Furnace pressure switch troubleshooting
- Flame sensor microamps and cleaning
Other brands
- Lennox Merit ML180UH (80% single-stage)
- Carrier 58CVA / 58CVX (80% variable-speed two-stage)
- Rheem / Ruud R96V / 96MDV (96% two-stage communicating)
- Goodman / Amana GR9S80 / GD9S80 (80% single-stage)
- Trane / American Standard S9X1 / S9X2 / S9B1 (96% condensing)
- Lennox SL280UHV (80% two-stage variable speed)
- Carrier 59TP6C two-stage condensing with InteliSense (Performance series)
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