HVACopediaGoodman · Furnace
12 flashes Inducer relay fault
What the control is telling you
Problem in the inducer circuit or its relay on the control. Furnace will not run.
Applies to: GMES9, GCES9, AMES9, ACES9, VMES9, VCES9 (single stage, 92% and 96%)
Likely causes
- Inducer wiring loose
- Bad inducer
- Poor unit ground
- Faulty control
- Blockage in the inducer or vent
Test and repair steps
- Turn off power before repairs.
- Check and fix the wiring from the control to the inducer.
- Check for blockage in the inducer and vent. Replace the inducer if bad.
- Check the unit ground wire. Replace the control if it is faulty.
Settings for these units
- Normal status displays (7-segment) · Goodman/Amana GM9S96/AM9S96
- Normal status displays (7-segment) · Goodman/Amana GM9S80/AM9S80
- Normal status displays (7-segment) · Goodman/Amana GM9C96/AM9C96
- Minimum recommended filter size · Goodman/Amana GM9C96/AM9C96
Models that show this code
57 models in Goodman/Amana *MES9 single-stage
Other codes on the same units
- 4 flashes Primary or auxiliary limit open
- 5 flashes Flame sensed with no call for heat
- 6 flashes Rollout limit open or control fuse blown
- 7 flashes Low flame signal
- 8 flashes Igniter relay fault
- 9 flashes Twinning fault
- 10 flashes Open fuse - no 24 V at the control
- 11 flashes Igniter open
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Source: Goodman Service and Troubleshooting GMES9*/GCES9*/AMES9*/ACES9*/VMES9*/VCES9* (RS6612016r3) , Troubleshooting Chart p.53; LED table p.44. 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.