Bryant Furnace Error Codes: What To Do When They Happen

When you’re using a piece of equipment as important as your furnace, it’s great to know what to do when things go wrong. An unexpected error code is one of the first signs that something isn’t operating correctly with your Bryant furnace. A simple error code can also be a sign that maintenance is due, so it’s important to know what they mean and how you can address each one. Before you begin troubleshooting your heater, reading through this list will give you an idea of where to start looking. A furnace has several different sensors in it and many of them are used for diagnostic purposes. When those sensors detect something that indicates there might be an issue with the unit, it will trigger an error code alerting the homeowner or leasing agent that there is a problem that needs to be addressed. Knowing what these error codes mean can help you determine what steps should come next when troubleshooting your Bryant furnace.

Error Code 16: Overheat Protection

If your furnace overheats, it will trigger an error code 16 alerting you to the overheating problem. An overheated furnace can lead to a lot of damage to your unit, so this is a very important error code to understand. Most likely, the cause of the overheating is an obstruction or debris build-up in your air filter or furnace filter. If so, clearing the obstruction will take care of the problem. When the cause of the overheating is a blocked or clogged filter, you’ll want to make sure the filter is clean and replace it if needed. You can clean your filter yourself, but replacing it may be a better choice. You can also check the blower motor to make sure it isn’t blocked.

Error Code 17: Blower Failure

If your blower motor isn’t operating, it will trigger an error code 17 alerting you to the problem. The blower motor is used to move air through your furnace and is a very important part of the unit. A blower motor that isn’t working should be fixed as soon as possible because it can cause serious issues with your furnace. The most common cause of blower motor problems is dust and debris build-up. Make sure the motor is not blocked by any dust or debris. When the blowing motor is overheated or has burned out, it’s time for a new motor.

Error Code 18: Burner Or Flame Sensor Failure

If the flame sensor in your furnace isn’t working, it will trigger an error code 18 alerting you to the problem. The flame sensor is used to detect when there is a flame in the furnace. When a flame sensor isn’t working, your furnace may not turn on at all or it may turn on but not stay on. In either case, the flame sensor error code will be displayed. There are two different types of sensors, the thermocouple and the infrared sensor. The thermocouple sensor is used in the pilot light. When the thermocouple sensor isn’t working, error codes 28 or 29 may be displayed instead. Burners that are misfiring or not lighting should be corrected before they cause damage to the furnace.

Error Code 21: Electronic Control Failure

If the electronic control board in your furnace isn’t working, it will trigger an error code 21 alerting you to the problem. The electronic control board operates all of the functions of the furnace including the blower, the burners, the fan, and the sensors. In most cases, an error code 21 means that the control board needs to be replaced. It’s not something that can be fixed with ease. If you get a furnace error code 21, you’ll want to contact a professional as soon as possible.

Error Code 22: Furnace Temperature Sensor Failure

If the temperature sensor in your furnace isn’t working, it will trigger an error code 22 alerting you to the problem. The temperature sensor is used to measure the temperature of the air inside your furnace. When the temperature sensor isn’t working, things can get very dangerous. The furnace can’t properly regulate itself when the temperature sensor isn’t working. The furnace will continue to run even though the air may be too hot or too cold. The temperature sensor needs to be replaced when it isn’t working properly.

Error Code 23: Furnace Humidifier Condensate Drain Valve Failure

If the humidifier condensate drain valve isn’t working, it will trigger an error code 23 alerting you to the problem. The humidifier condensate drain valve is used to drain any water that has collected in your humidifier back into the furnace. When the humidifier condensate drain valve isn’t working, water can collect in the furnace and the unit can flood. If the valve isn’t operating properly, it can cause the error code 23 to pop up. The humidifier condensate drain valve should be replaced if it isn’t working correctly.

Error Code 24: Furnace Humidifier Condenser Fan Failure

If the furnace humidifier condenser fan isn’t working, it will trigger an error code 24 alerting you to the problem. The humidifier condenser fan is used to circulate air across the evaporator coil to cool it and remove the heat. It also pushes the air through the furnace humidifier so water can be collected and evaporated before it gets into the home. When the humidifier condenser fan isn’t working, it can cause the furnace to overheat, freeze up, or flood. The humidifier condenser fan needs to be replaced when it isn’t working correctly.

Error Code 25: Outdoor Coil Condenser Fan or Blade Fault

If the outdoor condenser fan isn’t working, it will trigger an error code 25 alerting you to the problem. The outdoor condenser fan is used to circulate air across the evaporator coil to cool it and remove the heat. The outdoor condenser fan also pushes the air through the furnace humidifier so water can be collected and evaporated before it gets into the home. When the outdoor condenser fan isn’t working, it can cause the furnace to overheat, freeze up, or flood. The outdoor condenser fan needs to be replaced when it isn’t working correctly. The outdoor condenser fan can also be misaligned or have a broken blade. If the blades on the fan are broken or misaligned, error code 25 may appear.

Final Thoughts

Bryant furnaces can be very reliable, but when they aren’t working correctly it can be very frustrating. When you have an unexpected error code, it can be difficult to know what to do. During this time, it’s a good idea to schedule an HVAC technician to come out and look at your furnace. They may be able to identify the issue and fix it for you. Additionally, they can let you know if the furnace is likely to break down again in the future.

If your furnace is acting up, it’s important to know what the error code means so you can find the cause. An error code may indicate a minor problem or it may indicate a serious problem that needs to be fixed right away. It may even indicate a problem that can be fixed yourself.