Rheem RGRA-07EMAES Error Code LED Steady On: Normal Operation
What Does Code LED Steady On Mean?
A steady green status LED on the Rheem RGRA-07EMAES control board indicates that the microprocessor is receiving power and functioning correctly. The Integrated Furnace Control (IFC) has completed its self-check and found no error conditions. The furnace is either actively heating or standing by, waiting for a call from the thermostat.
If your home feels cold despite seeing this steady LED, the problem is likely outside the furnace control board. Check that your thermostat is set to "Heat" mode and the target temperature is above the current room temperature. Also verify that the thermostat batteries are not dead and that the wiring between the thermostat and furnace is intact.
No service is needed for this status indication. It simply confirms that the furnace electronics are working as designed.
Common Causes
| Cause | Likelihood | DIY? |
|---|---|---|
| Normal operation — furnace is powered and standing by or running | Most common | — |
- If the furnace is not heating despite showing normal operation status, and you have already verified thermostat settings and wiring
✓ Verified against manufacturer service manual — March 2026