HVACopedia

AirQuest · Furnace

14 Ignition lockout

High severity

What the control is telling you

The furnace failed to ignite after the allowed number of tries.

Applies to: Carrier/ICP-family two-digit status codes — confirm with the code label on the unit

Likely causes

  • Gas supply off / low pressure
  • Dirty flame sensor
  • Faulty igniter
  • Gas valve not opening
  • Poor ground

Test and repair steps

  1. Confirm gas supply and inlet pressure
  2. Clean the flame sensor and check microamps
  3. Check the hot surface igniter resistance / glow
  4. Verify 24V to gas valve during trial for ignition
  5. Check burner ground connection

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Source: Carrier/ICP status code label — verify per model. 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.