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Lennox · Furnace

E125 Control hardware failure

Critical severity EL296UHVLennox SL280UHVLennox ML180UHELennox SL297NV

What the control is telling you

Control failed its self-check (internal error, failed hardware such as flame sense circuit faults or pin shorts). Critical alert.

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

Likely causes

  • Integrated control hardware fault

Test and repair steps

  1. Cycle power to the control.
  2. If the error persists and prevents operation, replace the integrated control.
  3. Code clears 300 seconds after the fault recovers.

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Source: Lennox EL296UHV(X) Unit Information / Service Literature, Table 5 Ignition Control 103130-XX Diagnostic Codes, p.34; Ignition Control 107045-XX Diagnostic Codes table, p.41. 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.