What to do When Your Bryant Furnace Error Light is On

It’s happened to all of us: the dreaded red light on our heating system. If you have a Bryant furnace, you know the error code diagnostic light means something is not right with your unit. Diagnostic lights are an important safety feature for any mechanical device, alerting users when something needs fixing. However, when it comes to your home’s heating system and its many technical components, red lights can indicate several different things and require immediate attention from an HVAC expert. To help you better understand what your red diagnostic light means on your Bryant furnace and how to fix it, we’ve put together this guide with the top issues that may be affecting your heating system. After reading this article, feel free to reach out to us if you need more in-depth information or assistance.

Error Code 8: Blower Malfunction

The blower, as the name implies, is responsible for blowing air through the system, and a blower malfunction is the most common error code on a Bryant furnace. The blower on your furnace needs to be able to maintain a consistent speed for it to operate correctly and safely, and if it has a problem maintaining that speed, it will trigger the red error code. Blower malfunctions are often caused by a clogged filter, so the first thing you should do is clean out your filter. If the air filter is clogged, the blower will have to work harder and will speed up to compensate for the extra resistance, which can cause it to overheat and trigger the error code. Depending on the type of filter you have and how often you clean it, you may need to replace it every few months. If you’re not sure when to replace your filter, check with your manufacturer for the recommended replacement schedule.

Error Code 9: Furnace Malfunction

The furnace is responsible for burning whatever fuel source you have, burning that fuel, and creating the hot air that flows through your ductwork. Not having sufficient airflow throughout your system can trigger an error code. If the furnace is not burning the fuel efficiently enough, it will not produce enough heat to sufficiently heat your home. This can be caused by a clogged filter or a buildup of soot in the furnace’s heat exchanger. To fix a furnace malfunction, start by cleaning out the filter. If the problem persists, you may need to get a professional to clean out the heat exchanger.

Error Code 13: Burner Orifice Doesn’t Have Equal Pressure

The pressure inside the gas valve that controls the flow of gas to the burner orifices should be equal to the pressure inside the gas line. However, if there is a problem with the gas pressure, the orifices will not have equal pressure. This will trigger an error code. If the pressure inside the gas line is too low, the orifices will not operate correctly and will trigger the error code. When the orifices don’t close correctly, they will cause the pressure inside the gas line to drop, which will trigger the error code. To fix this issue, check that the gas pressure is high enough. If it’s not, you may need to call a professional to repair the issue.

Error Code 15: Burner Valve Has Incorrect Motion

If the pressure inside the gas valve is higher than the pressure inside the gas line, the orifices will not have equal pressure and will trigger the error code. The orifices need to close when the gas valve is closed, and they need to open when the gas valve is open. However, if there is a problem with the valve’s motion, the orifices will not have the correct motion and will trigger the error code. To fix this issue, check that the valve is moving correctly. If it isn’t, you may need to call a professional to repair the issue.

Error Code 19: Disc Rotor Has Incorrect Motion

If the pressure inside the gas valve is higher than the pressure inside the gas line, the orifices will not have equal pressure and will trigger the error code. The orifices need to close when the gas valve is closed, and they need to open when the gas valve is open. If the disc rotor is moving incorrectly, the orifices will not move correctly and will trigger the error code. To fix this issue, check that the disc rotor is moving correctly. If it isn’t, you may need to call a professional to repair the issue.

Error Code 21: Electronic Controller Failure

The electronic controller is responsible for monitoring sensors, regulating airflow and fuel flow, and ensuring that the furnace is running safely and efficiently. If the controller malfunctions, it will trigger the error code. Electronic controller failures are often caused by improper wiring or installation, or by the controller reaches the end of its life span. If your controller is improperly wired, it may not be able to function properly and will cause an error code. If your controller is near the end of its life span, it may not be able to function correctly and will cause an error code. If you believe your controller is improperly wired or has reached the end of its life span, you may need to replace it.

Final Words

We hope this article has provided you with a better understanding of the various error codes associated with Bryant furnaces, what each one means and how you can go about fixing it. Bryant is a highly-regarded manufacturer known for its high-quality heating systems, but even the best furnaces can experience problems from time to time. If you’re experiencing issues with your heating system, don’t try to troubleshoot it yourself. Instead, contact the experts at Expert Heating & Air for expert help and maintenance. We’re happy to help you keep your home running smoothly all year long.