If you’re looking for help fixing your American Standard furnace, look no further! Our comprehensive American Standard furnace repair guide will explain common issues, provide troubleshooting tips, and show you how to read your model’s error codes.

CODE: 2 flashes
PROBLEM: The furnace is likely blowing cold air because it’s dropping the flame.

CODE: 3 flashes
PROBLEM: Indicates a problem with the pressure switch.

CODE: 4 flashes
PROBLEM: Indicates a problem with the limit switch.

CODE: 6 flashes
PROBLEM: Indicates a problem with the polarity or grounding.

CODE: 7 flashes
PROBLEM: Indicates a problem with the gas valve.

CODE: 9 flashes
PROBLEM: Indicates a problem with the ignition or the ignitor circuit.

CODE: 22 flashes
PROBLEM: Indicates a problem with the flame itself.

american standard furnace codes

 

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