Error Code Discharge Air Sensor Failure
Lennox SLP98UHV Error Code Discharge Air Sensor Failure: Discharge Air Sensor Failure
TL;DR
The discharge air temperature sensor has failed. No error if disconnected; only shown if shorted or out-of-range. Code is activated during Field Test mode. 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 Discharge Air Sensor Failure Mean?
The discharge air temperature sensor has failed. No error if disconnected; only shown if shorted or out-of-range. Code is activated during Field Test mode.
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