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Trane L8V1A040U3VSA 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 control failureIntegrated furnace controlUrgent
E2.1Retries exceeded; flame never sensedIgnition and flame sensingUrgent
E2.2Recycles exceeded; flame was lostIgnition and flame sensingUrgent
E2.3First-stage gas valve not energized when expectedGas valve controlUrgent
E2.4HLO relay not energized when expectedRedundant relay / HLO outputUrgent
E3.1Pressure transducer signal not presentPressure transducerUrgent
E3.2Pressure transducer signal out of boundsPressure transducerUrgent
E3.3Insufficient pressurePressure transducerUrgent
E04Open limit switchThermal limit and safety circuitUrgent
E05Flame sense errorFlame sensingUrgent
E6.1Reversed polarityPower and groundingUrgent
E6.2Ground errorPower and groundingUrgent
E7.1First-stage gas valve energized when it should be offGas valve controlUrgent
E7.2Redundant relay energized when it should be offRedundant relay / HLO outputUrgent
E08Low flame senseFlame sensingUrgent
E10Inducer communication errorInducer communicationUrgent
E11Internal gas valve errorGas valve controlUrgent
E12Open low-voltage fuseLow-voltage protectionUrgent
E13Personality module motor ID errorMotor identificationUrgent
E14Personality module missingConfiguration dataUrgent
E15Personality module memory errorConfiguration dataUrgent
E17Blower communication error on motorBlower communicationUrgent
E18Blower communication error on IFCBlower communicationUrgent