6 flashes
Moderate
Goodman · HVAC Systems (AC, Furnaces & Heat Pumps)
Ignition Failure
Quick Answer
Error code 6 flashes on your Goodman HVAC Systems (AC, Furnaces & Heat Pumps) means: Ignition Failure. This is usually fixable — see the step-by-step guide below.
Likely Causes
How to Fix It
1
Verify gas supply valve is in the ON position
2
Remove and inspect the igniter for visible cracks or white oxidation spots
3
Measure igniter resistance with a multimeter (40-200 ohms for silicon nitride)
4
Verify 120VAC is sent to the igniter during the ignition sequence
5
Check manifold gas pressure with a manometer (3.5 in WC natural gas)
Pro Tip
This fix requires some technical knowledge. If you're unsure about any step, consider contacting support or a qualified technician.
Parts You May Need
Hot surface igniter
Gas valve
Igniter gasket
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