Goodman furnace: 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.
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.
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 · how we verify