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bryant furnace solid yellow light

How to Fix a Solid Yellow Light on Your Bryant Furnace

If you have a Bryant furnace, you may have noticed that sometimes it has a solid yellow light on. What does this mean and how can you fix it?  In…

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byrant solid yellow light

If you have a Bryant furnace, you may have noticed that sometimes it has a solid yellow light on. What does this mean and how can you fix it? 

In this blog post, we will explain the meaning of the solid yellow light on your Bryant furnace and give you some tips on how to troubleshoot and resolve the issue.

What Does a Solid Yellow Light on Your Bryant Furnace Mean?

Usually, only two-stage furnaces have a yellow light. If the LED is on, it means that your unit is operating in high-heat mode. This is normal when the outside temperature is very low and your furnace needs to work harder to keep your home warm.

However, if the solid yellow light is on and your furnace is not heating your home properly, there may be a problem with your thermostat, your air filter, or your furnace itself. Here are some steps you can take to diagnose and fix the problem.

Step 1: Check Your Thermostat

A close up image of our technician's hand showing showing how the thermostat should read when fixing byrant solid yellow light

The first thing you should do is check your thermostat to make sure it is set to ‘Heat’ and not ‘Off’ or ‘Hold’. Also, make sure the temperature setting is higher than the current room temperature. If your thermostat is battery-operated, you may need to replace the batteries if they are low.

Step 2: Check Your Air Filter

A dirty or clogged air filter can reduce the airflow and efficiency of your furnace. This can cause your furnace to overheat and shut down. To prevent this, you should change your air filter at least once every three months or more often if you have pets or allergies. 

To check your air filter, turn off the power to your furnace and locate the filter compartment. Remove the old filter and inspect it for dust and debris. If it is dirty, replace it with a new one of the same size and type. Make sure the filter is inserted correctly and securely.

Step 3: Check Your Furnace

If your thermostat and air filter are fine, but your furnace is still not working properly, you may need to check your furnace for other issues. Some common problems that can cause a solid yellow light on your Bryant furnace are:

  • A faulty flame sensor: The flame sensor is a safety device that detects if there is a flame in the burner. If it is dirty or defective, it can prevent the gas valve from opening and igniting the burner. To clean the flame sensor, turn off the power and gas supply to your furnace and locate the sensor near the burner. Use a soft cloth or a fine sandpaper to gently wipe off any dirt or carbon buildup. Be careful not to damage the sensor or its wiring.
  • A tripped limit switch: The limit switch is another safety device that monitors the temperature inside the heat exchanger. If it gets too hot, it will shut off the gas valve and stop the burner. This can happen if there is insufficient airflow or a blockage in the vent system. To reset the limit switch, turn off the power to your furnace and wait for it to cool down. Then, locate the switch near the blower motor and press the small button on it. If it clicks, it means it was tripped and has been reset.
  • A blown fuse or a tripped breaker: The fuse or breaker protects your furnace from electrical surges or short circuits. If it blows or trips, it will cut off the power to your furnace and stop it from working. To check the fuse or breaker, locate the electrical panel in your home and look for the one labeled ‘Furnace’ or ‘Heating’. If it is blown or tripped, replace it with a new one of the same rating or reset it by flipping it back on.

If none of these steps solve your problem, you may need to call a professional HVAC technician to inspect and repair your furnace. Do not attempt to fix any complex or dangerous issues by yourself as you may cause more damage or injury.

Conclusion

A solid yellow light on your Bryant furnace means that it is operating in high-heat mode, which is normal when it is very cold outside. However, if your furnace is not heating your home properly, you may need to check your thermostat, air filter, or furnace for any problems.

By following these simple steps, you may be able to fix some common issues by yourself. However, if you are unsure or unable to fix them, you should contact a qualified HVAC technician for assistance.

We hope this blog post has helped you understand what a solid yellow light on your Bryant furnace means and how to fix it. 

READ: How to Troubleshoot Bryant Furnace Yellow Light Codes

Frequently Asked Questions for Byrant Furnace

Q. What is the 13 code for a Bryant furnace?

A. Code 13 on a Bryant furnace indicates a limit circuit lockout, which may suggest that your furnace is overheating. This could be due to a dirty air filter or a malfunctioning blower motor.

Q. What is error code 3 3 on Bryant furnace?

A. Error code 33 on a Bryant furnace signifies a limit or flame rollout switch is open. This could be caused by blocked air vents, a dirty filter, or a faulty limit switch.

Q. What is error code 1 3 on Bryant furnace?

A. Error code 13 on a Bryant furnace points to a limit circuit lockout that may reset after three hours, but it could also indicate an issue that needs professional attention, like a faulty limit switch or thermostat wiring problems.

Q. What is error code 3 1 on Bryant furnace?

A. Error code 31 on a Bryant furnace indicates that the pressure, draft safeguard, or aux limit switch is open or the heat exchanger is too hot. This could be due to blocked vents, a malfunctioning inducer motor, or a faulty pressure switch.

Remember, while understanding these codes helps to diagnose furnace problems, it is recommended to consult with a heating professional for servicing to ensure safe and efficient operation.

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.

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Hi there, I'm Robert Brooks

Hi there, I'm Robert Brooks

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