Ingersoll Rand Furnace Error Codes

23 error codes for Ingersoll Rand furnace models. Each links to the full diagnostic procedure from the service manual.

CodeDescription
E01Loss of the IRQ or other internal failure.E04Open thermal limit, rollout switch, or reverse airflow switch.E05Flame detected when it should not be present.E08Flame current is low (less than 0.5 micro-amp DC) but still strong enough to…E09Open inducer limit switch or open condensate pressure switch.E11IFC has detected internal gas valve relay failure, or 24 VAC sensed at 2nd…E12Open fuse (onboard 5 amp fuse is open or missing).E13Blower HP/OEM ID mismatchE14No Personality Module installed and local copy is bad/corrupted.E15Both Unit Data File in PM and local Unit Data File are corrupt.E17Blower motor no communication responseE18Blower communication failure on the IFC controlE2.1Retry exceededE2.2Recycles exceededE2.31st stage gas valve not energized when it should be.E3.1Shorted pressure switch, 1st stage (pressure switch is closed when it should be…E3.2Open pressure switch, 1st stage (pressure switch is open when it should be…E3.3Shorted pressure switch, 2nd stage (pressure switch is closed when it should be…E3.4Open pressure switch, 2nd stage (pressure switch is open when it should be…E6.1Voltage reversed polarity on incoming high voltage wiring.
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E6.2Bad groundingE6.3Igniter relay fails (stuck closed) or igniter circuit is open/shorted.E7.11st stage gas valve (MVL) is energized when it should be off.

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