Goodman GMEC960803BN Error Code Amber 2 Flashes: Normal Operation - Second Stage Heat (W2)
What Does Code Amber 2 Flashes Mean?
Two amber flashes on the Goodman GMEC960803BN's Integrated Control Module indicate normal operation with a second-stage (high) heat call. The furnace is running at full firing rate, either because the thermostat energized W2 or because the board's staging logic stepped up from first stage on its own.
On this two-stage furnace, amber 1 flash is low-fire heat and amber 2 flashes is high-fire heat. The step up to second stage happens when low fire cannot satisfy the thermostat quickly enough — common during very cold weather, morning setback recovery, or a large temperature swing.
Because amber indicates a normal heating call, two amber flashes is expected behavior and requires no action. If you consistently see the furnace jump straight to second stage on mild days, it can be worth reviewing thermostat staging settings, but the indication itself is normal.
What You'll Notice
- Strong, hot airflow from the registers as the furnace runs at full capacity
- Two amber flashes on the control board while the burners run on high fire
How This Is Diagnosed
No diagnosis is needed — this is a normal high-stage heat indication. If the furnace runs on high fire constantly and never drops to first stage, or short-cycles on high fire, the thermostat staging settings and heat load can be reviewed, but amber 2 flashes by itself confirms the furnace is correctly heating on second stage.
- The furnace runs on second stage constantly and cannot maintain temperature, which may indicate an undersized system or a heat-loss problem rather than a furnace fault
Frequently Asked Questions
What do two amber flashes mean on my Goodman furnace?
They mean the furnace is running normally in second-stage (high) heat. It has stepped up to full firing rate to meet the heating demand.
Should my furnace be on high heat all the time?
Not usually. A two-stage furnace spends most of a cycle on low fire and steps up to high fire only when needed. Constant high-fire operation can mean very cold weather or a large heating demand.
✓ Verified against manufacturer service manual — March 2026