mypros+
Error code reference

Ingersoll Rand Furnace Error Codes

23 error codes documented with diagnostic procedures.

Have your model number? Get codes specific to your unit.
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 allow…E09Open inducer limit switch or open condensate pressure switch.E11IFC has detected internal gas valve relay failure, or 24 VAC sensed at 2nd stage gas…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 open).E3.2Open pressure switch, 1st stage (pressure switch is open when it should be closed).E3.3Shorted pressure switch, 2nd stage (pressure switch is closed when it should be open).E3.4Open pressure switch, 2nd stage (pressure switch is open when it should be closed).E6.1Voltage reversed polarity on incoming high voltage wiring.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.

Get the full diagnostic procedure for any code

Step-by-step tests, expected values, wiring diagram references, and verified part numbers.

Get Started $9.95 3-day pass

$29/month for unlimited access to all brands and Max AI diagnostics.

Common questions

How do I find the error code on my Ingersoll Rand Furnace?
Most Ingersoll Rand furnaces show the code directly on the control panel display. If your model has no display, it can be read by entering diagnostic mode with the key sequence for your model. The full procedures include model-specific instructions for reading codes.
Are these codes specific to my model?
The codes here apply broadly to Ingersoll Rand furnaces. Meanings and diagnostic steps can vary by model and production year, so enter your model number for model-specific information and procedures.
What do I do if my code is not listed?
Some codes are model-specific or only appear in diagnostic mode. Enter your model number to get codes specific to your unit, or contact us. We update the database continuously from manufacturer service documentation.
How much does it cost to access the full diagnostic procedures?
A 3-day pass is $9.95 one-time and gives full access to all brands, codes, and procedures. Monthly access is $29/month with unlimited access to everything including Max AI diagnostics.