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Back to American Standard S9V2B040U3VSB

American Standard S9V2B040U3VSB troubleshooting and error codes

These codes are matched from manufacturer documentation to this model's series or control platform. Keep checks visible and safe; do not open electrical, refrigerant, gas, combustion, or sealed equipment compartments.

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Source-backed code set

23 matched codes

CodeMeaningSystem areaPriority
E01Internal furnace-control failureSystem diagnosticsUrgent
E2.1Retry exceeded; flame never sensedSystem diagnosticsService
E2.2Recycle limit exceeded; flame sensed then lostSystem diagnosticsUrgent
E2.3First-stage gas valve not energized when requiredSystem diagnosticsService
E3.1First-stage pressure switch shortedSystem diagnosticsUrgent
E3.2First-stage pressure switch openSystem diagnosticsUrgent
E3.3Second-stage pressure switch shortedSystem diagnosticsUrgent
E3.4Second-stage pressure switch openSystem diagnosticsUrgent
E04Limit circuit openSystem diagnosticsUrgent
E05Flame detected when it should not be presentSystem diagnosticsService
E6.1Line-voltage polarity reversedSystem diagnosticsUrgent
E6.2Bad groundingSystem diagnosticsService
E6.3Igniter relay failure or open igniterSystem diagnosticsUrgent
E7.1First-stage gas valve energized when it should be offSystem diagnosticsService
E08Low flame currentSystem diagnosticsUrgent
E09Inducer limit switch or condensate pressure switch openSystem diagnosticsUrgent
E11Gas-valve operating faultSystem diagnosticsUrgent
E12Control fuse openSystem diagnosticsUrgent
E13Blower horsepower or OEM identification mismatchSystem diagnosticsUrgent
E14Personality module or local configuration data unavailableSystem diagnosticsService
E15Personality module and local unit data corruptSystem diagnosticsService
E17No blower-motor communication responseSystem diagnosticsUrgent
E18Blower communication failure at the controlSystem diagnosticsUrgent