Error Code 6 Flashes
American Standard AUD1B080A9H31A Error Code 6 Flashes: 115V AC Power Reversed, Poor Grounding, or System Voltage Too Low
TL;DR
The control board has detected that the 115V AC line and neutral wires are reversed, the furnace has inadequate electrical ground, or system voltage is too low. Disclaimer
This article is for informational purposes only and does not guarantee the accuracy or completeness of the information provided. Always turn off power and gas supply before attempting any repairs. If you smell gas, leave immediately and call your gas company. Consult a licensed HVAC technician for diagnosis and repair. Any actions taken based on this information are at your own risk. What Does Code 6 Flashes Mean?
The control board has detected that the 115V AC line and neutral wires are reversed, the furnace has inadequate electrical ground, or system voltage is too low.
When to Call a Professional
Contact a licensed HVAC technician if:
- Basic troubleshooting did not resolve the error
- You smell gas at any point during the process
- You are not comfortable working around gas lines or electrical components
- The unit needs a gas valve, control board, or motor replacement