HVACopediaDaikin · Furnace
EEE Internal control fault (IRQ loss)
What the control is telling you
The integrated control board found an internal fault. The furnace will not operate.
Applies to: Daikin DR96TN (upflow/horizontal) and DD96TN (downflow/horizontal) two-stage 96% furnaces with 9-speed ECM motor, R-32 ready
Likely causes
- Integrated control board failure
- Electrical noise or power disturbance
Test and repair steps
- Cycle power to the furnace and check whether the code returns.
- Check supply voltage (115 V +/- 10%) and grounding.
- If the code returns, replace the integrated control board.
Settings for these units
Normal status displays (7-segment) · Daikin DR96TN/DD96TN
| Mode | Display |
|---|---|
| Idle | IdL |
| Continuous fan | FAn |
| Cooling, low stage | 1AC |
| Cooling, high stage | 2AC |
| Gas heat, low stage | gH1 |
| Gas heat, high stage | gH2 |
| Factory (OEM) test mode | EOL |
These are normal operating displays, not fault codes.
Models that show this code
13 models in Daikin DR96TN/DD96TN
Other codes on the same units
- EAS R-32 sensor fault - mitigation mode
- EAr A2L relay fault - mitigation mode
- EEA Reversed line polarity or grounding error
- EEC Internal gas valve error - valve energized when it should not be
- EEH Twinning error
- EEJ Inducer relay error
- EEL Igniter relay / igniter circuit fault
- EEb External gas valve error - valve not energized when it should be
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Source: Daikin RSD6612304 (DR96TN/DD96TN service), 2 Stage Troubleshooting Codes, p.28-29. Summarized in our own words; check the original manual for your model.
Homeowner looking at this code? See what it means for you and when to call a technician.
For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.