Rheem HVAC Error Code 13: How to Fix It

Q: What causes Rheem error code 13?

Error code 13 is caused by flame loss during operation, typically due to a dirty flame sensor that cannot properly detect the flame, or insufficient gas pressure preventing stable combustion.

Q: How often should I clean my Rheem flame sensor?

Clean the flame sensor annually as part of regular maintenance, or whenever you experience ignition issues. Dirty sensors are the most common cause of flame detection problems.

Q: Can I run my Rheem furnace with error code 13?

No, do not attempt to run the furnace when error code 13 appears. This safety code prevents operation until the issue is resolved to avoid potentially dangerous conditions.

Q: Is Rheem error code 13 dangerous?

The error itself is a safety feature protecting you from dangerous conditions. However, the underlying cause (flame loss) can potentially be hazardous if not properly addressed, which is why the system shuts down.

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

If it's just a dirty flame sensor, cleaning it yourself costs nothing. Professional service calls typically range from $100-200. If gas pressure issues require regulator replacement, costs can be $200-400 including parts and labor.

Abstract

Rheem HVAC error code 13 indicates that the flame was lost during the heating cycle, typically due to a dirty flame sensor or inadequate gas pressure. This safety feature shuts down your system to prevent dangerous conditions, but it can usually be resolved with proper cleaning or pressure adjustments.