Goodman
Flame Proving Failure or Rollout/Limit Trip
Furnace starts but shuts off after a few seconds; inducer and blower may continue to run.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Dirty flame sensor, Blocked burners, Open rollout or limit switch, Poor combustion air supply
How to Fix / Troubleshooting
Safety: Turn off power and gas before servicing. If rollout switch is tripped, treat as a serious safety issue.
Steps:
- Clean flame sensor: Remove and clean the flame sensor rod with fine steel wool.
- Inspect burners: Clean burner ports and ensure proper flame carryover.
- Check safeties: Test rollout and limit switches for continuity when cool. If open, do not bypass; determine and correct the cause before replacing.
If the furnace continues to shut down quickly, a professional should perform combustion analysis and safety checks.
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Repair Difficulty
Hard
4/5
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