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 control board indicate that the furnace is operating in second-stage heat. This means the thermostat has called for high-fire heating, and the furnace has stepped up from its lower, more efficient first stage to full heating capacity.
Second-stage heating engages when the first stage cannot satisfy the thermostat's demand quickly enough, or when the thermostat calls for second-stage heat directly. This is completely normal behavior for a two-stage furnace and is more common during very cold weather when the home needs more heating output.
No action is required. The furnace will automatically return to first-stage or standby once the thermostat is satisfied. If the furnace seems to run in second stage constantly, you may want to check your thermostat settings or have a technician verify that the first stage is functioning properly.
- The furnace runs in second stage continuously without ever satisfying the thermostat
- You notice unusual noises or smells during second-stage operation
✓ Verified against manufacturer service manual — March 2026