HVACopedia

Goodman · Furnace

EEn Igniter open

High severity Goodman/Amana GM9S96/AM9S96Goodman/Amana GM9S80/AM9S80Goodman/Amana GM9C96/AM9C96

What the control is telling you

The control sees an open igniter circuit (igniter burned out or disconnected).

Applies to: Goodman/Amana/GMC gas furnaces, 9-speed ECM, 7-segment control. Two-stage 96%: AC9C96, AM9C96, GC9C96, GM9C96. Single stage 80%: VC9S80, VM9S80, AC9S80, AM9S80, GC9S80, GM9S80. Single stage 92/96%: VC9S96, VM9S96, AC9S96, AM9S96, AM9S92, GC9S96, GM9S96, GM9S92

Likely causes

  • Igniter element open/cracked
  • Igniter plug or wiring loose or broken

Test and repair steps

  1. Check the igniter plug and wiring back to the control.
  2. Power off, let the igniter cool and measure resistance: 37-68 ohms (silicon nitride), 30-300 ohms (80% carbide mini igniter). Open = replace.
  3. Handle the new igniter by its base only - touching the element or rough handling shortens its life.
  4. During warm-up the silicon nitride igniter should draw 0.37 to 0.68 A at 120 V (two-stage manuals).

Settings for these units

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Source: Goodman RS6612022r1 (GM9S92/GM9S96/GC9S96 service), 1 Stage Troubleshooting Codes, p.29-30; Goodman RS6621008r2 (GM9S80 service), p.32-33; Goodman RS6612020r1 (GM9C96 service), 2 Stage Troubleshooting Codes, p.35-36. Summarized in our own words; check the original manual for your model.

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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.