Goodman GMEC96 furnace 12 red flashes: Igniter Relay Not Energizing Igniter
Professional repair
What do 12 red flashes mean on a Goodman GMEC96 furnace? The control board's igniter relay is not energizing the hot-surface igniter. The GMEC96 troubleshooting chart gives a single check for this code: replace the control board.
Before you touch anything: the six signs that mean stop troubleshooting and call a pro →
This is a board-level fault, not an igniter swap. Have a technician confirm igniter wiring and voltage at the igniter terminals before ordering, then replace the control board. DIY part cost: $80–180 — a pro visit for this class of fault typically runs $150–350.
What causes it (in order of likelihood)
- Failed igniter relay on the integrated control board (official check: replace control board) 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 12 red flashes mean on a Goodman GMEC96 furnace?
The control board's igniter relay is not energizing the hot-surface igniter. The GMEC96 troubleshooting chart gives a single check for this code: replace the control board.
How do I fix Goodman GMEC96 furnace 12 red flashes?
The official chart's check is replacing the control board, but a technician should confirm igniter wiring and voltage first. There's no homeowner fix.
How much does it cost to fix Goodman GMEC96 furnace 12 red flashes?
Cost depends on the technician's confirmation and on board availability for your model. Ask them to verify wiring and igniter voltage before ordering parts.
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 — “Control board igniter relay not energizing igniter / Replace control board”
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.