Goodman furnace 6 flashes: Open Rollout Limit Switch
Professional repair
What does 6 flashes mean on a Goodman furnace? The flame-rollout control opened — flames left the burner area at some point. The circulator blower is energized full-time. Rollout switches usually need a manual reset, but the cause must be found first.
This condition involves the gas or combustion side. If you smell gas or a CO alarm sounds: leave, then call your gas utility. Diagnostic info here is reference — combustion repairs are for licensed technicians. All six emergency signs →
Rollout events can indicate a cracked heat exchanger (CO risk). A technician must inspect before resetting. DIY part cost: $10–30 — a pro visit for this class of fault typically runs $150–350.
What causes it (in order of likelihood)
- Flame rollout — often a blocked or cracked heat exchanger, or venting failure TECH
- Failed rollout switch itself TECH
Parts referenced by this code
Always match parts against your model's parts list — part numbers vary within a series.
Questions about this code
What does 6 flashes mean on a Goodman furnace?
The flame-rollout control opened — flames left the burner area at some point. The circulator blower is energized full-time. Rollout switches usually need a manual reset, but the cause must be found first.
How do I fix Goodman furnace 6 flashes?
Stop troubleshooting and don't reset the rollout switch. If a CO alarm sounds or you smell gas, leave and call from outside. A technician must find the cause before any reset.
How much does it cost to fix Goodman furnace 6 flashes?
Cost depends on the inspection. A failed rollout switch is a smaller job than a venting or heat-exchanger problem, and only a technician's diagnosis can tell which applies.
Related symptoms
These symptoms can appear alongside this code. The link is an association, not a diagnosis, and code meanings vary by brand, model and control.
Applies to
GMS8 · GDS8 · GHS8 · GMSS96 · GMH8 · GDH8
Different Goodman generations use different code maps. If your series isn't listed, don't assume this meaning — check your blower-door label.
Verified against Goodman GMS8/GDS8/GHS8 Service Manual (RS6612006), p.42 — “six flashes followed by...”
Verified against Goodman GMSS96 Service Manual, p.33
Last verified 2026-07-06 · page updated 2026-10-07 · how we verify
Related Goodman furnace codes
These codes use the same single red led — flash codes system.
| Pattern | Meaning |
|---|---|
| 5 flashes | Flame Sensed With No Call for Heat |
| 7 flashes | Low Flame Sense Signal |
| 4 flashes | Open Primary Limit Switch |
| 8 flashes | Igniter Circuit Fault or Poor Ground |