Lennox | LED Status Codes (DS1 & DS2)

Error Code Slow Flash / Slow Flash

Troubleshooting guide for the Lennox LED Status Codes (DS1 & DS2) system fault Slow Flash / Slow Flash.

Disclaimer: This information is for general reference. Error codes can vary by model and production year. Always refer to your machine's specific manual and the information printed on the unit itself.

System Diagnosis

Blower Motor Fault (Normal Operation with Call for Heat). If alternating, it may indicate a different issue, but simultaneous slow flash often means normal operation or blower issue depending on model. Consult manual.

Potential Causes & Solutions

  • Blower motor failure, control board issue.

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