American Standard Error Code | What this means |
---|---|
2 flashes | The furnace is likely blowing cold air because it’s dropping the flame. |
3 flashes | Indicates a problem with the pressure switch. |
4 flashes | Indicates a problem with the limit switch. |
6 flashes | Indicates a problem with the polarity or grounding. |
7 flashes | Indicates a problem with the gas valve. |
9 flashes | Indicates a problem with the ignition or the ignitor circuit. |
22 flashes | Indicates a problem with the flame itself. |