Rheem Error Code 13: Rheem Code 13 - Incomplete Combustion
How to Fix Rheem Code 13
- Step 1: Immediately shut off the gas supply to the unit at the shut-off valve.
- Step 2: Open windows and doors to ventilate the area.
- Step 3: Evacuate the premises and contact your local gas company or a qualified HVAC technician for inspection and repair.
What Does Rheem Error Code 13 Mean?
Rheem tankless water heaters and furnaces are designed with safety in mind. When the system detects incomplete combustion, meaning the fuel isn't burning completely, it shuts down and displays error code 13. This is a critical safety feature because incomplete combustion can release carbon monoxide (CO), a colorless, odorless, and potentially deadly gas. This error can stem from various issues affecting the air-fuel mixture or the venting system. It's important to address this issue promptly to ensure your safety and the proper operation of your Rheem unit. Because CO is so dangerous, troubleshooting should be left to qualified technicians.
Common Causes of Rheem Code 13
- Blocked or restricted venting, preventing proper exhaust of combustion gases.
- Insufficient gas supply pressure to the unit.
- Dirty or malfunctioning flame sensor preventing proper flame detection.
- Air intake blockage restricting fresh air supply for combustion.
- Faulty gas valve not regulating gas flow correctly.
Applicable Rheem Models
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This error requires immediate attention from a licensed HVAC technician. Do not attempt repair yourself.
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