Although Noritz builds its water heaters to the highest standards, from time to time you might get an error code on your unit. These codes can diagnose problems that otherwise might remain unnoticed until unit failure, thus saving on repair and replacement costs. We've constructed the following helpful outline of the seven most common error codes and their resolutions. Some resolutions are simpler than others, but you should always err on the side of caution and contact a licensed contractor.
Key Takeaways:
- Error codes on Noritz tankless water heaters can diagnose problems before they lead to unit failure.
- Always contact a licensed contractor for assistance with troubleshooting and resolving error codes.
- Error code 11 indicates ignition failure, often caused by insufficient gas supply or airflow.
- Error code 12 points to a weak flame and improper water heating, also caused by a lack of gas or airflow.
- Error code 16 may be due to scale buildup, which can be resolved through descaling or water softening processes.
- Error code 29 signals a problem with condensate drainage, requiring inspection of the drain line.
- Error code 73 may result from improper circuit board settings, which can sometimes be resolved by unplugging and reconnecting the unit.
Noritz Error Code 11
When you encounter error code 11 on your Noritz tankless water heater, it signifies an ignition failure. This means that your unit is not firing up to heat the water, which can be caused by various factors such as insufficient gas supply, inadequate airflow, or debris on the ignition plug. To troubleshoot this issue, start by checking if the gas valve is open. If it is, you should contact a licensed contractor who can assist you further.
A professional contractor will ensure that the gas valve is properly open, the exhaust vent is free from obstructions, and the ignition plug is securely attached and free of any debris. Ignoring this error code can lead to further problems and potentially costly repairs, so it's essential to address it promptly and seek professional assistance.
To prevent any potential risks and ensure the optimal functioning of your Noritz tankless water heater, always consult a licensed contractor for troubleshooting and repairs.
https://www.youtube.com/watch?v=iLiV2YSSLrk
Error Code Cause Troubleshooting Steps 11 Ignition failure - Check the gas valve - Contact a licensed contractor for further inspection - Ensure exhaust vent is unobstructed - Clean ignition plug and remove any debris
Noritz Error Code 12
Error code 12 in a Noritz tankless water heater indicates a weak flame, resulting in improper heating of water. This error is often caused by a lack of gas supply or insufficient airflow. To resolve this issue, it is recommended to contact a licensed contractor who can perform the necessary troubleshooting steps.
Possible Causes
- Insufficient gas supply
- Inadequate airflow
When faced with error code 12, the first step is to verify the gas supply. Ensure that the gas valve is open and functioning properly. Next, check for any obstructions in the exhaust vent that may be restricting airflow. Clear any debris or blockages that are present.
If the issue persists, it is recommended to contact a licensed contractor who can further investigate and resolve the error. They will have the knowledge and expertise to properly diagnose the problem and implement the necessary solutions.
Error Code Cause Resolution 12 Weak flame Contact a licensed contractor to check gas supply and airflow, and perform necessary repairs or adjustments.
Noritz Error Code 16
One of the common error codes you might encounter with your Noritz tankless water heater is error code 16. This error code is triggered when there is a sharp spike in the outlet water temperature. It is usually caused by scale buildup, which reduces heat-transfer efficiency and forces the unit to burn hotter in an attempt to compensate.
To resolve error code 16, it is recommended to perform a descaling procedure or use a water softener. Descaling helps to remove the scale buildup and restore the unit's efficiency. Using a water softener can also prevent future scale buildup. It is important to consult a licensed contractor to ensure that scale buildup is indeed the cause of the error and to perform the necessary steps for resolution.
Preventing scale buildup in your tankless water heater is essential for maintaining its performance and prolonging its lifespan. Regular maintenance and descaling can help prevent error code 16 and ensure that your Noritz tankless water heater continues to work efficiently.
Error Code Cause Resolution 16 Sharp spike in outlet water temperature Perform descaling procedure or use water softener
Noritz Error Code 29
If you encounter error code 29 on your Noritz tankless water heater, it indicates a problem with condensate drainage. This error code specifically applies to condensing tankless water heaters, which have a drain line equipped with a neutralizer to reduce the acidity of the outflow. When there is a blockage in the condensate drain line or incorrect condensate drain piping, the burner may flood, triggering error code 29.
To resolve this issue, it is recommended to contact a licensed contractor. They will inspect the condensate drain line to ensure it is properly routed and unobstructed. This may involve disassembling and cleaning the drain line or making any necessary adjustments to prevent further drainage problems.
Proper condensate drainage is essential for the efficient functioning of your tankless water heater, as it prevents potential damage and ensures the unit operates smoothly. By addressing error code 29 promptly, you can avoid more significant issues down the line and maintain the longevity of your Noritz tankless water heater.
https://www.youtube.com/watch?v=9krkePSLIBo
Summary
- Error code 29 indicates a problem with condensate drainage in Noritz tankless water heaters.
- This error is specific to condensing units with a drain line equipped with a neutralizer.
- A blockage in the condensate drain line or incorrect piping can trigger error code 29.
- Contact a licensed contractor to inspect and resolve the condensate drainage issue.
Error Code Description Troubleshooting Steps 29 Problem with condensate drainage Contact a licensed contractor to inspect and resolve the issue
Noritz Error Code 73
In the world of Noritz tankless water heaters, error code 73 is something you may come across. This error occurs when there are improper circuit board settings in your unit. It can be triggered by changing a jumper connection or dip switch while the power is supplied to the heater, or due to an improperly programmed circuit board. If you encounter this error, there are a few steps you can take to troubleshoot the issue.
Reset the Heater
The first step is to unplug the heater from the power source for about 30 seconds. This will allow the unit to reset and clear any temporary faults. After the 30 seconds, plug the heater back in and check if the error code persists. In some cases, this simple reset can resolve the issue.
Contact a Licensed Contractor
If the error code continues to appear after resetting the heater, it is recommended to contact a licensed contractor. They have the expertise and knowledge to diagnose and resolve complex issues with Noritz tankless water heaters. A licensed contractor will be able to inspect the circuit board settings, ensure proper programming, and make any necessary adjustments or repairs. It's always best to let a professional handle electrical components to avoid any further damage or safety risks.
In conclusion, Noritz error code 73 indicates improper circuit board settings in your tankless water heater. By following the steps above, you can attempt to troubleshoot and resolve this error code. However, it is essential to consult a licensed contractor for a comprehensive diagnosis and repair to ensure the proper functioning of your Noritz tankless water heater.
Noritz Error Code F76
If you encounter error code F76 on your Noritz tankless water heater, it signifies a communication breakdown between two Quick-Connected units. This issue often arises when two units are connected and more than one remote control is used. To resolve this error, it's important to ensure that only one remote control is connected when dealing with two units.
If the error code persists even after adjusting the remote control setup, it is recommended to contact a licensed contractor for further assistance. They will be able to diagnose the issue and provide the necessary solution to restore proper communication between the tankless water heaters.
Remember, troubleshooting errors on your Noritz tankless water heater should always be done by a licensed professional to ensure safety and prevent further damage. Attempting to fix the issue without proper knowledge and expertise can lead to more significant problems and potentially void the warranty of the unit.
https://www.youtube.com/watch?v=-FSkNLxyhi8
Error Code Cause Solution F76 Breakdown in communication between two Quick-Connected units Ensure only one remote control is connected when using two units; contact a licensed contractor if the error persists
Noritz Error Code 90
If you're encountering error code 90 on your Noritz tankless water heater, it indicates a combustion abnormality resulting from an improper mixture of air and fuel. This error can arise due to several factors, including insufficient gas supply, a blockage in the fuel vent, or debris in the fan motor. To resolve this issue, it's essential to seek assistance from a licensed contractor who can perform a thorough inspection and necessary repairs.
When you contact a professional, they will meticulously check gas pressures, venting length, dip switches, and other relevant components to identify the root cause of the combustion abnormality. By addressing the underlying problem, they can ensure the safe and efficient operation of your Noritz tankless water heater.
Remember, attempting to fix error code 90 on your own without the necessary expertise can lead to further complications. By relying on a licensed contractor, you can rest assured that the issue will be resolved effectively and in compliance with all safety standards.
Possible Causes of Error Code 90 Recommended Actions Insufficient gas supply Contact a licensed contractor to assess and resolve the gas supply issue. Blockage in the fuel vent A licensed contractor will inspect and clear any obstructions in the fuel vent. Debris in the fan motor Professional assistance is required to clean the fan motor and ensure proper functioning.
Remember, error code 90 on your Noritz tankless water heater should not be overlooked or ignored. Contact a licensed contractor promptly to address the combustion abnormality, ensuring the continued reliable performance of your unit.
How to Care for Your Noritz Tankless Water Heater
When it comes to maintaining your Noritz tankless water heater, there are a few simple steps you can take to ensure its longevity and peak performance. Regular maintenance will not only save you money on potential repairs, but it will also extend the lifespan of your unit.
Firstly, it is important to regularly purge the port valves of your water heater. This can be done by attaching hose lines and opening the relevant purge port valves to remove any waste from the system. By doing this, you will prevent any buildup of debris or sediment that can hinder the efficiency of your water heater.
Another important step is to clean out your water heater using undiluted white vinegar. After purging the lines, follow the manufacturer's recommended draining and flushing procedures, and then pour the vinegar into the unit. Let it sit for a few hours to dissolve any mineral deposits or scale that may have accumulated inside. Finally, slowly turn the water back on to remove any trapped air from the system.
By following these simple maintenance steps, you can keep your Noritz tankless water heater running smoothly and efficiently for years to come. However, if you encounter any issues or need further troubleshooting tips, refer to our comprehensive guide on Noritz tankless water heater troubleshooting.
FAQ
What does error code 11 indicate on my Noritz tankless water heater?
Error code 11 indicates ignition failure in your tankless water heater. It is caused by insufficient gas supply, insufficient airflow, or debris on the ignition plug.
What should I do if I see error code 12 on my Noritz tankless water heater?
Error code 12 means the unit has a weak flame and water is not being heated properly. It is typically caused by a lack of gas or airflow.
Why am I getting error code 16 on my Noritz tankless water heater?
Error code 16 occurs when there is a sharp spike in outlet water temperature. This is often caused by scale buildup or hard water.
What is the cause of error code 29 on my Noritz tankless water heater?
Error code 29 indicates a problem with condensate drainage. It is caused by a blockage in the condensate drain line or incorrect condensate drain piping.
How can I fix error code 73 on my Noritz tankless water heater?
Error code 73 is typically caused by improper circuit board settings. Try unplugging the heater for 30 seconds and then plugging it back in. If the error persists, contact a licensed contractor.
What does error code F76 mean on my Noritz tankless water heater?
Error code F76 indicates a breakdown in communication between two tankless water heaters using the Quick Connect Cord. Make sure only one remote control is hooked up when two units are connected.
What should I do if I see error code 90 on my Noritz tankless water heater?
Error code 90 indicates a combustion abnormality caused by an improper mixture of air and fuel. Contact a licensed contractor to resolve this error.
How can I care for my Noritz tankless water heater?
Regularly purge the port valves and clean out the water heater using undiluted white vinegar after purging its lines. Follow the manufacturer's recommended draining and flushing procedures.
