skip to Main Content

Comfort, Efficiency, Innovation, Insight

An image illustrating how to troubleshoot Bryant furnace codes

How to Troubleshoot Bryant Furnace Codes

Bryant furnace codes play a vital role in diagnosing problems with your furnace. These codes are designed to provide valuable information about the state of your furnace, enabling you to…

This post may contain affiliate links. Please read my disclosure policy.

Bryant furnace codes play a vital role in diagnosing problems with your furnace. These codes are designed to provide valuable information about the state of your furnace, enabling you to identify and address issues promptly. 

In this blog post, we will explore what Bryant furnace codes are, common causes behind them, and practical troubleshooting steps to resolve the issues. So, let’s dive in and gain a better understanding of how to handle Bryant furnace codes effectively.

What Are Bryant Furnace Codes?

Bryant furnace codes are alphanumeric indicators displayed on the furnace control board or LED panel. When your Bryant furnace encounters a problem, it generates a specific code that helps you identify the issue more easily. 

These codes are part of the furnace’s built-in diagnostic system, which aims to simplify the troubleshooting process.

How to Fix Bryant Furnace Codes

General Tips and Precautions for Fixing Bryant Furnace Codes

When attempting to fix Bryant furnace codes, it is important to follow some general tips and precautions to ensure safety and effectiveness. Here are some guidelines to keep in mind:

  • Turn off the Power: Before attempting any troubleshooting or repairs, turn off the power to the furnace by switching off the circuit breaker or unplugging it. This helps prevent electrical accidents and ensures your safety during the process.
  • Wear Protective Gear: When working with your furnace, wear appropriate protective gear such as gloves and safety glasses. This protects you from potential hazards and keeps your hands clean while handling sensitive components.
  • Consult the Manual: Refer to the manufacturer’s manual for your specific Bryant furnace model. The manual provides valuable information on troubleshooting steps, error code interpretations, and recommended solutions. Familiarize yourself with the manual to understand the furnace’s components and potential issues.
  • Check for Obvious Issues: Before diving into complex troubleshooting, perform a visual inspection of your furnace. Look for obvious issues such as loose connections, blocked vents, or dirty filters. Sometimes, simple fixes can resolve the error codes.

How Do You Read Bryant Furnace Codes?

When it comes to troubleshooting Bryant furnace codes, it is essential to understand how to interpret the LED lights and the two-digit codes. Let’s delve into each aspect to provide a comprehensive understanding.

LED Lights and Their Meanings

Bryant furnaces utilize different LED lights to indicate various conditions. Here’s a breakdown of the most common LED light colors and their meanings:

  • Red LED Light: A solid red light typically indicates a critical error or malfunction that requires immediate attention. It signifies that the furnace is not functioning correctly and may have shut down for safety reasons.
  • Yellow LED Light: A steady yellow light suggests that the furnace is operating in a normal mode with no significant issues. It indicates that the furnace is providing heat without any immediate problems.
  • Green LED Light: A solid green light indicates that the furnace is receiving electrical power and is in standby mode. It signifies that the furnace is ready to operate when the thermostat calls for heat.

Interpreting Two-Digit Codes

Bryant furnaces often display two-digit error codes using short and long flashes of the LED light. Here’s a general guide to interpreting these codes:

  • Short Flash: A short flash typically represents the first digit of the code. Each short flash indicates a number, such as 1, 2, 3, and so on. Count the number of short flashes to determine the first digit of the error code.
  • Long Flash: A long flash represents the second digit of the code. Similar to short flashes, count the long flashes to identify the second digit of the error code.

By combining the short and long flashes, you can determine the specific error code and gain insight into the nature of the issue.

Common Bryant Furnace Codes and Their Meanings

To further assist you in troubleshooting, here is a table/list of the most common Bryant furnace codes and their meanings:

Error Code | Meaning

12 | Blower On After Power Up

13 | Limit Circuit Lockout

14 | Ignition Lockout

21 | Gas Heating Lockout

22 | Abnormal Flame Proving Signal

23 | Pressure Switch Did Not Open

24 | Secondary Voltage Fuse Open

31 | Pressure Draft Safeguard Activated

32 | Low-Heat Pressure Switch Open

33 | Limit Circuit Fault

41 | Blower Motor Fault

42 | Inducer Motor Fault

44 | Faulty Blower Motor Control

Please note that this is not an exhaustive list, and there may be additional error codes specific to your Bryant furnace model. Consult your furnace’s manual or the manufacturer’s website for a comprehensive list of error codes and their meanings

When and Why Resetting the Unit is Necessary

Resetting the unit becomes necessary under various circumstances:

  • After Fixing the Problem: Once you have identified and fixed the root cause that triggered the Bryant furnace code, resetting the unit is essential to clear the error code from the system’s memory. This allows the furnace to start anew without any lingering effects of the previous issue.
  • After a Power Outage: Power outages can cause temporary disruptions in the furnace’s functioning, leading to error codes. Resetting the unit after a power outage helps recalibrate the system and restores normal operation.
  • Diagnostic or Troubleshooting Purposes: In some cases, resetting the unit is a valuable step during the diagnostic or troubleshooting process. It provides a fresh start, allowing you to observe if the error code reappears, which can offer insights into the persistence of the problem.

Steps to Reset the Unit Depending on the Model and Type of Furnace

The process of resetting a Bryant furnace can vary based on its model and type. Here are some common methods used to reset Bryant furnace codes:

Using the SW-1 Button:


a. Locate the control board on your Bryant furnace.

b. Identify the SW-1 button, usually found on the control board.

c. Press and release the SW-1 button.

d. Wait for a few seconds to allow the reset process to complete.

e. Observe the LED lights on the furnace to check if the error codes have been cleared.

Jumpering the Thermostat Terminals:


a. Turn off the power to the furnace by switching off the circuit breaker or unplugging it.

b. Access your thermostat and remove its cover to reveal the terminals.

c. Look for terminals labeled “R” (power) and “W” (heat).

d. Use a small piece of wire or a jumper wire to connect the “R” and “W” terminals together.

e. Restore power to the furnace.

f. Monitor the furnace to see if the error codes have been reset and if normal operation is restored.

Remember that these are general guidelines, and specific instructions may vary depending on your furnace model. Always refer to your furnace’s manual or consult the manufacturer’s website for detailed reset instructions tailored to your specific model.

Risks of Resetting the Unit without Fixing the Problem or Replacing the Control Board if Needed

While resetting the unit can be an effective way to clear Bryant furnace codes, it is important to note that it should not be used as a permanent solution if the underlying problem persists.

Here are some risks associated with resetting the unit without fixing the problem or replacing the control board if needed:

  • Recurring Issues: If you reset the unit without addressing the root cause of the problem, there is a high likelihood that the error codes will reappear. Resetting alone does not fix the underlying issue, and the furnace may continue to malfunction, leading to wasted time and potentially costly repairs in the future.
  • Safety Concerns: Ignoring the need for proper troubleshooting and repairs can compromise the safety of your furnace system. Some issues, such as faulty ignition or airflow problems, may pose safety hazards, including the risk of fire or carbon monoxide leaks. Resetting the unit without addressing these issues can put you and your household at risk.
  • Control Board Damage: In certain cases, a malfunctioning control board may be the cause of the error codes. Resetting the unit without replacing a faulty control board can lead to further damage to the system. It is important to consult a qualified HVAC technician to diagnose and address control board issues appropriately.

Therefore, it is crucial to prioritize proper troubleshooting and repairs. If you are unable to identify or fix the underlying problem on your own, it is strongly recommended to seek professional assistance from a qualified HVAC technician. 

They can accurately diagnose the issue, determine if a control board replacement is necessary, and provide appropriate solutions to ensure the safe and efficient operation of your Bryant furnace.

Remember, safety and long-term performance should always take precedence over temporary fixes.

Examples of Fixing Common Bryant Furnace Codes

Here are some specific examples of common Bryant furnace codes and possible solutions:

Code 33: This code indicates a limit switch problem. Check for blocked vents, dirty filters, or closed supply registers. Ensure proper airflow and ventilation by removing obstructions. If the problem persists, it is advisable to consult a professional technician.

Code 34: Code 34 indicates an ignition problem. Check for issues such as a faulty ignitor, dirty burners, or a defective gas valve. Clean or replace the ignitor and burners if necessary. If the problem persists, consider calling a professional for further inspection.

Code 41: Code 41 points to a blower motor fault. Check for any obstructions or debris hindering the blower’s operation. Ensure that the blower motor is receiving the correct voltage. If the problem persists, it is recommended to contact a professional HVAC technician to diagnose and repair the issue.

Remember, these are general guidelines, and specific troubleshooting steps may vary based on your Bryant furnace model. Always refer to the manufacturer’s manual for precise instructions and consult a professional technician if you are unsure or unable to resolve the issue.

When to Call a Professional for Help and How to Find a Reliable HVAC Technician in Your Area

While some Bryant furnace issues can be resolved through DIY troubleshooting and repairs, there are situations when it is best to seek professional help. Consider calling a professional HVAC technician under the following circumstances:

  • Complex Issues: If you encounter complex or recurring problems with your Bryant furnace codes that you are unable to resolve on your own, it is advisable to consult a professional. They have the expertise and experience to accurately diagnose and repair the issue.
  • Safety Concerns: If the furnace poses safety risks, such as gas leaks, unusual odors, or electrical malfunctions, it is crucial to seek immediate professional assistance. Your safety and the safety of your household should be the top priority.

To find a reliable HVAC technician in your area, consider the following steps:

  • Ask for Recommendations: Seek recommendations from friends, family, or neighbors who have had positive experiences with HVAC technicians. Personal referrals can provide valuable insights into the technician’s expertise and professionalism.
  • Check Online Reviews: Read online reviews and ratings for HVAC technicians in your area. Websites such as Google, Yelp, and Angie’s List can provide helpful feedback from previous customers.
  • Verify Licenses and Certifications: Ensure that the HVAC technician you choose is licensed, insured, and certified. This ensures their competence and adherence to industry standards.
  • Request Quotes and Compare: Contact multiple HVAC technicians and request quotes for the repair job. Compare their prices, services, and warranties to make an informed decision.

By following these steps, you can find a reliable HVAC technician who can diagnose and fix Bryant furnace codes effectively and efficiently.

Remember, your Bryant furnace is a complex system, and it is essential to prioritize safety and expertise when addressing issues. When in doubt, always consult a professional for guidance and assistance.

Read more posts here.

I'm an HVAC enthusiast and a passionate writer dedicated to sharing valuable insights and practical tips about heating, cooling, ventilation, and air conditioning systems.

Latest Posts

Hi there, I'm Robert Brooks

Hi there, I'm Robert Brooks

I’m so glad you are here! Welcome to my website, where I’ll share easiest HVAC troubleshooting tips, buyers guides, and everything about HVAC cooling and heating system. Learn more about me.

Back To Top