Error code reference

Lennox Furnace Error Code DS1 ON / DS2 ON

Circuit board failure or control wired incorrectly. Check 24 and 115 volts to board. (G32V-5 units)

SourceLennox G32V Series Furnace - Service ManualTable 21, Page 25

Diagnostic procedure

The full DS1 ON / 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
Check 24V and 115V to board. Reset control by turning main power off.

SourceLennox G32V Series Furnace - Service ManualTable 21, Page 25

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

5 manuals in the MyPros+ library document this code for Lennox furnace.

Models covered by the manuals that document this code

More models are covered than are listed here.

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