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Lennox · Furnace

E200 Flame rollout - hard lockout

Critical severity EL296UHVLennox SL280UHVLennox ML180UHELennox SL297NV

What the control is telling you

The rollout switch circuit is open or was previously open; furnace is in hard lockout.

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

Likely causes

  • Blocked heat exchanger
  • Blocked flue/vent
  • Lack of combustion air
  • Failed rollout switch

Test and repair steps

  1. Warning: A rollout trip means flame came out of the burner box; find the cause before resetting.
  2. Inspect the heat exchanger, vent and combustion air piping for blockage.
  3. Check burner alignment and burner box cover in place.
  4. Check burner faces and crossovers for blockage and clean (soft brush vacuum) if needed.
  5. After reset, a hard lockout requires a thermostat reset or power cycle.
  6. Rollout switches (S47) are on top of the burner box, one each side; they open at 210°F.
  7. Once the cause is fixed, press the manual reset on the switch, or replace it if it will not reset.
  8. Test furnace operation through a full heat cycle.

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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, Troubleshooting: Heating Sequence of Operation flowchart, p.110-112, Maintenance p.89. 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.