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Lennox · Furnace

5 flashes Watchguard - ignition retries/recycles exceeded

High severity Lennox EL195UHNE

What the control is telling you

The burner failed to light within the maximum retries or recycles. The control locks out and retries after 60 minutes (107163-01: 1 hour lockout).

Applies to: EL195UHNE furnaces with ignition control 103217-03 or 107163-01 (red LED)

Likely causes

  • Same causes as 3 flashes: no gas, ignitor, flame sensor, air orifice, vent/drain restriction

Test and repair steps

  1. Read stored codes (press and release the recall button) to see what led to the lockout.
  2. Reset by cycling the thermostat off/on or main power.
  3. Work through the 3-flash checks gas supply, ignitor 39-70 ohms, flame signal, manifold and signal pressure.
  4. Check intake/exhaust and condensate trap for blockage.
  5. Watch at least one full ignition sequence after repair.

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Source: Lennox EL195UHNE Unit Information Corp 1801-L1 (rev 04/2024), Table 4 (103217-03) / Table 5 (107163-01) diagnostic codes, p.8-10. 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.