Goodman GMEC96 furnace 11 red flashes: Limit Circuit Open More Than 5 Minutes
Try DIY first, then call a pro
What do 11 red flashes mean on a Goodman GMEC96 furnace? The limit switch circuit has stayed open for more than 5 minutes. The GMEC96 troubleshooting chart lists the symptom as the furnace not operating while the inducer keeps running, and its check step is to reset main power and confirm the indoor blower operates.
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 →
GOOD NEWS: THE FIRST CHECKS ARE FREE AND TAKE MINUTES.
Try these first — in this order
Fit a clean filter and open every supply and return grille, then reset main power once and watch whether the indoor blower starts on the next call for heat.
If the blower does not run, or 11 flashes return after one reset, stop resetting. A technician needs to check blower operation and the limit circuit. DIY part cost: $5–25 / $400–800 — a pro visit for this class of fault typically runs $150–350.
What causes it (in order of likelihood)
- Dirty filter, closed registers, or blocked ductwork keeping the limit open DIY-CHECKABLE
- Indoor blower not running on the call for heat (motor, capacitor, or board relay) TECH
- Failed main or auxiliary limit switch 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 do 11 red flashes mean on a Goodman GMEC96 furnace?
The limit switch circuit has stayed open for more than 5 minutes. The GMEC96 troubleshooting chart lists the symptom as the furnace not operating while the inducer keeps running, and its check step is to reset main power and confirm the indoor blower operates.
How do I fix Goodman GMEC96 furnace 11 red flashes?
With the power off, replace an accessible filter with the same size and type and open every grille. Don't keep resetting; a technician should check the blower and limits.
How much does it cost to fix Goodman GMEC96 furnace 11 red flashes?
A dirty filter may be inexpensive to correct. If the indoor blower isn't running or a limit failed, cost depends on whether the motor, capacitor, relay, or limit is involved.
Applies to
GMEC96
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 GMEC96 Service Manual, p.53 — “Open limit switch circuit for more than 5 minutes / Re-set main power and check indoor blower operation”
Last verified 2026-09-02 · page updated 2026-10-03 · how we verify
Related Goodman furnace codes
These codes use the same gmec96 tri-color control — red and amber fault codes system.