Error Code LSOM - Compressor Contactor Welded
Lennox SLP98UHV Error Code LSOM - Compressor Contactor Welded: LSOM - Compressor Contactor Welded
TL;DR
The compressor contactor contacts are welded shut, causing the compressor to run continuously. The contactor must be replaced. 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 LSOM - Compressor Contactor Welded Mean?
The compressor contactor contacts are welded shut, causing the compressor to run continuously. The contactor must be replaced.
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