HVACopedia

Lennox · Furnace

E206 Gas valve second-stage relay failure

Medium severity EL296UHVLennox SL280UHVLennox SL297NV

What the control is telling you

Second-stage relay failed; furnace runs on first stage for the rest of the call.

Applies to: EL296UHV(X) series furnaces (integrated control 103130-XX and 107045-XX)

Likely causes

  • Failed second-stage relay on control

Test and repair steps

  1. Confirm whether the furnace can reach second stage.
  2. Check second-stage wiring to the gas valve.
  3. If second stage still cannot operate, replace the integrated control.

Settings for these units

Save it for the next call

Star this code in the HVACopedia app and keep the whole library on your phone for jobs with no signal.

Open the app

Source: Lennox EL296UHV(X) Unit Information / Service Literature, Table 5 Ignition Control 103130-XX Diagnostic Codes, p.35; Ignition Control 107045-XX Diagnostic Codes table, p.42. Summarized in our own words; check the original manual for your model.

Homeowner looking at this code? See what it means for you and when to call a technician.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.