Carrier HVAC Error Code 13: How to Fix It

Q: What does Carrier error code 13 mean?

Carrier error code 13 indicates a limit circuit fault, meaning the system detected overheating and shut down to prevent damage or fire.

Q: Can I reset Carrier error code 13 myself?

Yes, if a dirty filter or blocked vent caused the error, cleaning or replacing the filter and resetting the limit switch may resolve it. Always turn off power first.

Q: Why does my Carrier HVAC keep showing error 13?

Recurring error 13 often indicates a persistent airflow problem (dirty filter, blocked ducts, bad blower motor) or a faulty limit switch that needs replacement.

Q: How much does it cost to fix Carrier error code 13?

If it's a DIY fix (filter or vent cleaning), it's free. Hiring a professional for limit switch replacement typically costs $150–$300 including parts and labor.

Q: Is it safe to run my HVAC with error code 13?

No. The system has shut down due to high temperature. Operating it can cause fire, damage the system, or void your warranty. Troubleshoot and fix the issue first.

Abstract

Carrier HVAC error code 13 indicates a limit circuit fault due to high temperature. This safety device prevents overheating and potential fire. Common causes include dirty air filters, restricted airflow, or a faulty limit switch. Follow these steps to resolve the issue safely.