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Rheem 90RJ06 Error Codes

Updated · by Aurora Star Tech Inc.

Rheem 90RJ06 error codes and diagnostic codes. The 90RJ06 is a Rheem furnace in the Rheem 90RJ/90TJ 90 Plus series.

Homeowner with a furnace problem? Call (647) 657-2977 or book a service call — licensed technicians across Vaughan and the GTA.

Rheem 90RJ06 error codes list

CodeMeaningSeverity
1 blinkSoft lockout (failed ignition)High
2 blinksPressure switch circuit openMedium
3 blinksLimit circuit openHigh
4 blinksPressure switch circuit closed (stuck closed)Medium
5 blinksTwinning fault (optional)Low
Flame LED offNo flame sensed (troubleshooting aid)Medium
Flame LED rapid blinkAmber flame LED - unexpected flameCritical
Flame LED slow blinkAmber flame LED - marginal flame senseMedium

Troubleshooting the 90RJ06

Rheem 90RJ06 specs and setup data

All Rheem Furnace error codes →

Homeowner help: Furnace Not Turning On: What to Check · Furnace Blinking Light: What the Flash Codes Mean

General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.

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