Goodman six flashes: a rollout trip and a wiring fault on one count
Goodman six flashes can report a flame rollout trip or a line voltage polarity problem depending on the control. Read the label before you read the internet.
What this means
Six flashes is a count that Goodman has assigned differently on different integrated controls, including a flame rollout trip on some and a line voltage polarity or grounding condition on others. Because those two readings have completely different risk levels, the diagnostic label inside your own furnace door decides which one applies, not a chart found elsewhere.
Equipment and model context
Goodman GMVC-series and related integrated furnace controls documented in the installation and operating instructions
- GMVC80
- GMVC95
- GMVC96
- AVPVC air handler controls
Goodman publishes the flash-count table on the wiring and diagnostic label of each furnace and in that model's installation and operating instructions. The count-to-meaning mapping is a property of the control platform, so a table from a different Goodman generation, or from Amana equipment on a related control, can be wrong for your furnace.
What you may notice
- The control LED repeats six flashes with a pause, and no heat is being produced.
- Soot, discoloration, or an unusual smell is present around the burner compartment.
- The furnace has behaved oddly since an electrical alteration, a generator supply, or a new circuit was installed.
Likely causes
- A flame rollout device opens when heat reaches the area of the burner compartment the device is positioned to watch.
- Line voltage polarity that is reversed at the furnace prevents the control from proving flame correctly, because flame sensing relies on a reference to neutral and ground.
- A missing or high-resistance ground connection can produce the same electrical condition as reversed polarity.
Diagnostic paths
There is soot, scorching, or a burning smell at the furnace
Visible black marks, heat discoloration, or an acrid smell is present at or around the burner area of the cabinet.
Keep the furnace switched off and arrange licensed gas service the same day. Do not press a rollout reset button, which would remove the warning without addressing why heat reached that device.
The code followed electrical work or a generator supply
The furnace worked before a new circuit, a supply alteration, or a period on standby generator power, and the code appeared afterwards.
Report the electrical change. Polarity and grounding at the furnace supply is a checkable, correctable condition that has nothing to do with the gas side.
Nothing looks wrong at all and the count is simply repeating
There is no smell, no soot, and no visible sign of a problem, yet the control keeps showing six flashes and refuses to heat.
Read the diagnostic label inside the furnace door and record exactly what Goodman assigns to six flashes on that specific control before assuming which branch you are in.
Flash counts are assigned per control platform, not per brand, which is why a number found online can be confidently wrong. The label inside the door was printed for the control fitted to your furnace.
- Control platformDecides what each count means
- Door labelPrinted for that exact control
- Install manualConfirms the same table
- Generic chartMay belong to another generation
| Reading | Risk level | Who resolves it |
|---|---|---|
| Flame rollout trip | High, combustion may be escaping | Licensed gas engineer, same day |
| Reversed line polarity | Electrical, not combustion | Qualified electrician or engineer |
| Missing ground | Electrical, affects flame proving | Qualified electrician or engineer |
A count is not a code word
Numeric display codes such as Carrier's status codes tend to stay stable across a product family, because the number is stored and shown rather than counted. Flash counts are cheaper to implement and cheaper to change, and manufacturers do change them between control generations. That is the reason two reputable sources can give different meanings for the same Goodman flash count and both be telling the truth about the furnace they were written for.
The practical rule follows from that. Read the label, then read the manual for the model number on the rating plate, and treat any third source as a hypothesis. On this particular count the cost of getting it wrong is not academic, because one branch is an electrical adjustment and the other is a combustion safety event.
Polarity matters to a furnace in a way it does not to a lamp
Reversed line polarity is invisible to most appliances. A furnace notices, because flame rectification works by passing a small current through the flame to ground, and that measurement depends on the supply being connected the way the control expects. Get it backwards and the control cannot prove a flame that is genuinely burning, which stops the furnace by a route that has nothing to do with gas.
The same sensitivity applies to grounding. A furnace that has always worked and then fails after electrical alterations, or that behaves differently on generator supply, is worth investigating from the supply end before the gas end. The flame sensing explainer covers the rectification principle, and the furnace limit switch definition covers the other device that can sit behind this count.
What to give the technician
Give the engineer the Goodman model and serial number, the six-flash count, what the door label assigns to that count, whether soot or odour is present, and any recent electrical alterations.
Safe homeowner checks
- Read the diagnostic label inside the furnace door through the sight glass or during a permitted access, and record what six flashes is assigned to on that control.
- Look and smell for soot, scorching, or combustion odours around the furnace without opening the burner compartment.
- List any electrical work, supply changes, or generator use in the period before the code appeared.
Is a reset appropriate?
Where the count corresponds to a rollout trip, there is no owner reset: the device exists to stay open until the cause is found. Where it corresponds to a polarity or grounding condition, nothing clears until the supply is corrected.
When to call a technician
- A flame rollout trip requires combustion, heat exchanger, and venting assessment by a licensed gas engineer, and the reset button on a rollout device is not an owner control.
- Correcting line voltage polarity or a grounding fault at the furnace supply is electrical work for a qualified person, not a matter of swapping conductors on a guess.
Questions people ask about this
Does Goodman six flashes mean flame rollout?
On some Goodman controls it does, and on others the same count is assigned to a line voltage polarity or grounding condition. The diagnostic label inside your furnace door is what decides which applies.
Can I press the rollout reset button?
No. A rollout device opened because heat reached a place the design does not put heat. Resetting it without establishing why removes the warning and leaves the condition in place.
How would reversed polarity even reach my furnace?
It arrives through an alteration to the supply, a wrongly wired outlet or junction, or a temporary supply such as a generator. A furnace notices because flame proving depends on the supply reference being correct.
Evidence recordHow this page was checked
service manual · checked 2026-09-15
Every technical claim above was written from primary documentation held in the HVAC Bench evidence record: Goodman technical literature. Where a source limits a definition to certain models, test conditions, or product classes, that limit is repeated here rather than generalised.
- Documentation class
- service manual
- Scope of the definition
- Goodman GMVC-series and related integrated furnace controls documented in the installation and operating instructions
- Last checked
- 2026-09-15