Trane Gas Furnace Codes: What They Mean and How to Read Them

When you purchase a new furnace, it will come with instructions on how to install and run it. These instructions are not just going to be in general terms but also include codes that give you specific information on the operation of the furnace. If you are not familiar with these codes, you might find them a bit strange. The truth is that these types of codes are used by manufacturers so they can track specific information about their products and keep quality control at the same time. That being said, here is some general information about Trane gas furnace codes and what they mean.

What are Trane Gas Furnace Codes?

When you purchase a new furnace, it will come with instructions on how to install and run it. These instructions are not just going to be in general terms but also include codes that give you specific information on the operation of the furnace. If you are not familiar with these codes, you might find them a bit strange. The truth is that these types of codes are used by manufacturers so they can track specific information about their products and keep quality control at the same time. That being said, here is some general information about Trane gas furnace codes and what they mean. A Trane gas furnace code is a hexadecimal number that is used to identify specific issues with the furnace. These furnace codes will be displayed on the control panel of your furnace. If for any reason your furnace stops working or begins to malfunction, a code will be displayed on the control panel. These Trane gas furnace codes will give you specific information on what is wrong with the furnace and how to fix it.

Trane Gas Furnace Error Codes

An error code is displayed when something goes wrong with your furnace. These codes will not just be displayed as a hexadecimal code but will also be displayed as a word. Although the word will not be put there to deceive you, it will be there to provide a description of what is going on. Dirty filter – A dirty filter will cause the filter code to show on your furnace. Make sure to clean or replace your filter so the furnace can operate properly. Faulty control board – If your furnace has a faulty control board, an error code will be displayed. If this problem occurs, you will need to replace the control board. Faulty transformer – If the transformer is faulty, an error code will be displayed. You will need to replace the transformer. Faulty limit switch – A faulty limit switch will cause an error code to be displayed. You will need to replace the limit switch. Open circuit – An open circuit will cause an error code to be displayed. The circuit is open because of a faulty wire. You will need to repair the wire. Short circuit – A short circuit will cause an error code to be displayed. The circuit is shorted because of a faulty wire. You will need to repair the wire.

Trane Gas Furnace Service Codes

A service code is used to display certain errors with your Trane gas furnace. The service code will provide information on what is wrong with the furnace and what you can do to fix it. Discharge air temperature fault – An abnormal discharge air temperature will cause the discharge air temperature fault to be displayed. You will need to check the discharge air temperature and make the necessary adjustments. Exhaust pressure too low – If the exhaust pressure is too low, an exhaust pressure fault will be displayed. Make sure the pressure switch is set correctly and the ductwork is not clogged. High temperature fault – If the high-temperature fault is displayed, the temperature is too high. You will need to check the thermowell, make sure the cooling fan is running, and clean or replace the filter. Inlet air temperature fault – An abnormal inlet air temperature will cause an inlet air temperature fault to be displayed. You will need to check the inlet air temperature and make the necessary adjustments. Low pressure fault – If the low-pressure fault is displayed, the pressure is too low. Make sure the pressure switch is set correctly and the ductwork is not clogged. Low temperature fault – If the low-temperature fault is displayed, the temperature is too low. Make sure the cooling fan is running and clean or replace the filter.

Trane Gas Furnace Operation Codes

An operation code is used to display the current operating conditions of your furnace. These operation codes let you know what your furnace is doing at that moment. Cleaner filter – This operation code is displayed when the filter is cleaned. You will need to clean or replace the filter. Inlet air temperature fault – This operation code is displayed when the inlet air temperature is too high or too low. You will need to check the inlet air temperature and make the necessary adjustments. Low pressure fault – This operation code is displayed when the pressure to the furnace is too low. Make sure the pressure switch is set correctly and the ductwork is not clogged. Low-temperature fault – This operation code is displayed when the temperature of the exhaust is too low. Make sure the cooling fan is running and clean or replace the filter.

What are The Different Types of Codes?

All Trane gas furnace codes are hexadecimal numbers, but there are different types of codes that can be displayed. Here are some of the types of codes that can be displayed and what they mean. E1 – Open circuit – An open circuit will cause an error code to be displayed. The circuit is open because of a faulty wire. You will need to repair the wire. E2 – Short circuit – A short circuit will cause an error code to be displayed. The circuit is shorted because of a faulty wire. You will need to repair the wire. E3 – High temperature fault – If the high-temperature fault is displayed, the temperature is too high. You will need to check the thermowell, make sure the cooling fan is running, and clean or replace the filter. E4 – Low pressure fault – If the low-pressure fault is displayed, the pressure to the furnace is too low. Make sure the pressure switch is set correctly and the ductwork is not clogged. E5 – Inlet air temperature fault – An abnormal inlet air temperature will cause an inlet air temperature fault to be displayed. You will need to check the inlet air temperature and make the necessary adjustments. E7 – Exhaust pressure too low – If the exhaust pressure is too low, an exhaust pressure fault is displayed. Make sure the pressure switch is set correctly and the ductwork is not clogged.

Conclusion

When you purchase a new furnace, it will come with instructions on how to install and run it. These instructions are not just going to be in general terms but also include codes that give you specific information on the operation of the furnace. If you are not familiar with these codes, you might find them a bit strange. The truth is that these types of codes are used by manufacturers so they can track specific information about their products and keep quality control at the same time. That being said, here is some general information about Trane gas furnace codes and what they mean. Now that you know what Trane gas furnace codes are and what each code means, you will be able to properly use and maintain your furnace. If you have any questions about Trane gas furnace codes or your furnace in general, do not hesitate to reach out to a professional.