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Error code reference
Lennox Furnace Error Code DS1 Off / DS2 On
Low flame signal; measures below 0.23 microAmps. Replace flame sense rod.
SourceLennox G60UHV(X) Series Furnace - Full Service Manualp. 12
Diagnostic procedure
The full DS1 Off / DS2 On procedure
Step 1 is visible so you can confirm you are on the right page. The remaining steps, the ones that tell you whether to actually replace a part, unlock with any pass.
MyPros+ · DiagnosticsStep 1 preview
1
First diagnostic step
Clean or replace flame sense rod.
SourceLennox G60UHV(X) Series Furnace - Full Service Manualp. 12
More steps, wiring diagram references, and verified part numbers
Includes expected resistance and voltage values, connector pinouts, and supersession notes for replacement parts.
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Where this code is documented
4 manuals in the MyPros+ library document this code for Lennox furnace.
Models covered by the manuals that document this code
- C33-18A-2F
- C33-24A-2F
- C33-30A-2F
- C33-36A-2F
- G60UH-1
- G60UH-24A-045
- G60UH-24A-045X
- G60UH-24A-070
- G60UH-36A-070
- G60UH-36A-070X
- G60UH(X)
- G60UHV-36A-070
- G60UHV-36A-070X
- G60UHV-36B-090
- G60UHV-60C-090
- G60UHV-60C-090X
- G61MP-36B-045
- G61MP-36B-070
- G61MP-48C-090
- G61MP-60C-090
- G61MPV-36B-045
- G61MPV-36B-070
- G61MPV-36B-071
- G61MPV-36C-090
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