System Diagnosis
No Power. The furnace may not be receiving power. Check the breaker and fuse.
Lennox | LED Status Codes (DS1 & DS2)
Error Code Off / Off
Troubleshooting guide for the Lennox LED Status Codes (DS1 & DS2) system fault Off / Off.
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.
Potential Causes & Solutions
- Tripped breaker, blown fuse, door switch open.
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