Error Code Low 24V
Lennox SLP98UHV Error Code Low 24V: Low 24V
TL;DR
The 24-volt control circuit voltage is too low. The control will restart if the error recovers. Acceptable range is 18 to 30 volts. 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 Low 24V Mean?
The 24-volt control circuit voltage is too low. The control will restart if the error recovers. Acceptable range is 18 to 30 volts.
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