At Noritz, we understand that homeowners rely on their tankless water heaters to provide a steady supply of hot water. However, these efficient appliances may encounter various issues that can disrupt their performance. By familiarizing yourself with common problems and their solutions, you can quickly address any Noritz tankless water heater problems that arise.
Whether it's an error code indicating an ignition failure, a water temperature spike, or a condensate drainage problem, understanding the underlying causes and troubleshooting steps is essential. By taking prompt action and seeking professional assistance when necessary, you can ensure the optimal functioning of your Noritz tankless water heater.
Key Takeaways:
- Understanding common Noritz tankless water heater error codes is vital for effective troubleshooting.
- Troubleshooting Noritz tankless water heater problems involves checking gas supply, airflow, and ignition plug.
- Common issues include the unit not heating, not igniting, and continuously shutting off.
- Leaks in a Noritz tankless water heater require professional assessment and repair.
- Checking error codes promptly and seeking professional assistance can prevent costly repairs.
Common Noritz Tankless Water Heater Error Codes
Noritz tankless water heaters may display error codes to indicate specific malfunctions. These error codes often require troubleshooting and professional assistance to resolve. Understanding these common problems will help homeowners address them effectively and ensure the optimal functioning of their Noritz tankless water heaters.
Error Code 11: Ignition Failure
Error Code 11 on a Noritz tankless water heater indicates an ignition failure. This can be caused by insufficient gas supply, airflow issues, or debris on the ignition plug. Homeowners should check the gas valve, exhaust vent, and ignition plug for any problems. If the issue persists, contacting a licensed contractor for further diagnosis and repair is recommended.
Error Code 12: Weak Flame
Error Code 12 signifies a weak flame on a Noritz tankless water heater. This can occur due to a clogged or dirty burner, insufficient gas supply, or issues with the gas valve. Homeowners should check the gas valve and burner for any obstructions or debris. If cleaning these components does not resolve the issue, it is advisable to seek the assistance of a licensed contractor.
Error Code 16: Water Temperature Spike
Error Code 16 occurs when there is a sharp spike in the outlet water temperature of a Noritz tankless water heater. This is often caused by scale buildup, which reduces heat transfer efficiency and leads to the unit burning hotter to compensate. Descaling the unit or using a water softener may resolve this issue. It is advisable to consult a licensed contractor to determine the appropriate course of action.
Error Code Cause Resolution Error Code 11: Ignition Failure Insufficient gas supply, airflow issues, or debris on the ignition plug Check gas valve, exhaust vent, and ignition plug for problems. Contact a licensed contractor if issue persists. Error Code 12: Weak Flame Clogged or dirty burner, insufficient gas supply, or issues with the gas valve Check gas valve and burner for obstructions or debris. Contact a licensed contractor if cleaning does not resolve the issue. Error Code 16: Water Temperature Spike Scale buildup reducing heat transfer efficiency Descale the unit or use a water softener. Consult a licensed contractor for further guidance.
These error codes are just a few examples of the common issues that Noritz tankless water heaters may encounter. It is important for homeowners to have a basic understanding of these error codes and their causes to effectively troubleshoot and address them. However, it is recommended to seek the assistance of a licensed contractor for proper diagnosis and resolution of any Noritz tankless water heater problems to ensure safety and optimal performance.
Troubleshooting Noritz Tankless Water Heater Problems
Troubleshooting Noritz tankless water heater problems is essential to ensure the efficient and reliable operation of your unit. If you encounter any issues with your Noritz tankless water heater, it's important to identify the specific error code displayed by the unit. This will help you determine the underlying cause and take the necessary steps to resolve the problem.
When troubleshooting, start by checking the gas supply to the water heater. Ensure that the gas valve is fully open and that there are no obstructions or leaks in the gas line. Insufficient gas supply can lead to ignition failure or weak flames, preventing the heater from producing hot water. If the gas supply is adequate, check the airflow around the unit. Restricted airflow can cause overheating and trigger error codes. Clear any obstructions and make sure there is proper ventilation.
Common Troubleshooting Steps:
- Check the gas supply: Ensure the gas valve is open and there are no leaks or obstructions in the gas line.
- Check the airflow: Clear any obstructions around the unit and ensure proper ventilation.
- Inspect the ignition plug: Clean the ignition plug and ensure it's securely attached.
- Perform regular maintenance: Descaling the unit and using a water softener can help prevent issues caused by scale buildup.
If the troubleshooting steps mentioned above do not resolve the problem, it is recommended to contact a licensed contractor or Noritz customer service for further assistance. They will have the expertise to diagnose the issue accurately and provide the necessary repairs or replacements.
Error Code Cause Resolution Error Code 11 Ignition failure Check gas supply, airflow, and ignition plug. Contact a licensed contractor if needed. Error Code 12 Weak flame Check gas supply, airflow, and ignition plug. Contact a licensed contractor if needed. Error Code 16 Water temperature spike Descaling the unit or using a water softener may resolve the issue. Consult a licensed contractor if needed. Error Code 29 Condensate drainage problem Contact a licensed contractor to inspect and resolve the drainage issue. Error Code 73 Improper circuit board settings Unplug the unit for 30 seconds and plug it back in. Contact a licensed contractor if the error persists.
Noritz Tankless Water Heater Not Heating
A common problem with Noritz tankless water heaters is the unit not heating water effectively. When this issue occurs, it can be frustrating and inconvenient for homeowners. However, understanding the potential causes and troubleshooting steps can help address the problem efficiently.
There are several factors that can contribute to a Noritz tankless water heater not heating properly. One common cause is an insufficient gas supply. To resolve this, homeowners should check the gas valve to ensure it is fully open and supplying gas to the unit. Additionally, checking the gas line for any obstructions or leaks is recommended.
Another possible reason for the lack of heating is airflow problems. Homeowners should inspect the intake and exhaust vents to ensure they are free from any blockages such as debris or insects. Cleaning the vents and ensuring proper ventilation can help improve the heater's performance.
If the gas supply and airflow are not the issue, it is possible that a weak flame could be the cause. The flame should be strong and steady for the heater to effectively heat water. Homeowners should inspect the ignition plug and clean it if necessary. This can be done by gently brushing away any debris or buildup that may be affecting the flame.
Potential Causes Troubleshooting Steps Insufficient gas supply - Check the gas valve and ensure it is fully open- Inspect the gas line for obstructions or leaks Airflow problems - Inspect the intake and exhaust vents for blockages- Clean the vents and ensure proper ventilation Weak flame - Inspect and clean the ignition plug- Remove any debris or buildup affecting the flame
Noritz Tankless Water Heater Not Igniting
If your Noritz tankless water heater is not igniting, it could be due to several reasons. Identifying and addressing the underlying cause is essential to restore the proper functioning of your unit. Here are some troubleshooting steps you can take to resolve this issue:
- Check the gas valve: Ensure that the gas valve supplying fuel to the water heater is fully open. If the valve is partially closed or turned off, the heater will not ignite.
- Inspect the exhaust vent: Make sure the exhaust vent is not obstructed. Blockages can prevent proper airflow, leading to ignition failure.
- Clean the ignition plug: The ignition plug can accumulate debris over time, hindering the ignition process. Gently clean the plug to remove any dirt or buildup.
If the problem persists after performing these troubleshooting steps, it is recommended to contact a licensed contractor. They have the expertise to diagnose and fix complex issues with your Noritz tankless water heater.
https://www.youtube.com/watch?v=iLiV2YSSLrk
Remember, it's crucial to address ignition problems promptly to avoid further inconvenience and potential damage to your water heater. Seeking professional assistance will ensure that your unit is restored to optimal performance and that you have a continuous supply of hot water.
Noritz Tankless Water Heater Keeps Shutting Off
If you are experiencing a problem where your Noritz tankless water heater keeps shutting off, there may be underlying issues that need to be addressed. This can be frustrating and disruptive to your daily routine, but understanding the potential causes and troubleshooting steps can help you resolve the problem effectively.
One common cause of a tankless water heater continuously shutting off is improper circuit board settings. This can occur if the settings are changed while the power is supplied to the heater or if the circuit board is programmed incorrectly. In such cases, you can try unplugging the unit for 30 seconds and then plugging it back in. This simple reset may resolve the issue and allow your water heater to function properly again.
However, if the problem persists after the reset, it is best to seek the assistance of a licensed contractor. They have the knowledge and expertise to diagnose the issue accurately and provide the necessary repairs or replacements. Attempting to fix the problem without proper training can lead to further complications or void the warranty of your Noritz tankless water heater.
Possible Causes Troubleshooting Steps Improper circuit board settings Unplug the unit for 30 seconds and plug it back in. If the issue persists, contact a licensed contractor. Underlying issues with the unit Contact a licensed contractor for diagnosis and repair.
Remember, it is important to address a Noritz tankless water heater that keeps shutting off promptly. Ignoring the issue can lead to further damage and potential safety hazards. By seeking professional assistance, you can ensure the optimal performance of your water heater and enjoy uninterrupted hot water supply in your home.
Noritz Tankless Water Heater Leaking
One common problem that homeowners may encounter with their Noritz tankless water heaters is leakage. This can be caused by various factors, including faulty internal components, loose fittings, or improper installation. It is essential to address the issue promptly to prevent water damage and ensure the optimal functioning of the unit.
To identify the source of the leak, homeowners should first turn off the water supply to the tankless water heater. This will help prevent further leakage and potential water damage. Then, they should visually inspect the unit for any visible signs of leakage, such as water pooling around the unit or wet spots on the walls or floor.
Once the source of the leak is identified, it is recommended to contact a licensed contractor to assess and repair the issue. They have the expertise and knowledge to properly diagnose the problem and provide the necessary solutions. Whether it's a loose fitting that needs to be tightened, a faulty valve that needs to be replaced, or a more complex issue with the internal components, a professional can ensure that the repair is done correctly and efficiently.
Possible Causes Solutions Loose fittings or connections Tighten the fittings or connections Faulty valves Replace the faulty valves Damaged pipes or tubing Repair or replace the damaged pipes or tubing Improper installation Reinstall the unit correctly
Taking immediate action when a Noritz tankless water heater is leaking is crucial to minimize potential water damage and ensure the continued operation of the unit. By contacting a licensed contractor, homeowners can receive the necessary expertise and assistance to resolve the issue promptly and effectively.
https://www.youtube.com/watch?v=PlpaO2k4Vec
Importance of Checking Error Codes
When it comes to troubleshooting Noritz tankless water heater problems, one of the most valuable tools at our disposal is the error code display. Noritz tankless water heaters are designed to provide detailed error codes that indicate specific malfunctions or issues with the unit. These error codes serve as an early warning system, alerting us to potential problems before they escalate.
By checking the error codes displayed on your Noritz tankless water heater, you can quickly identify the underlying issue and take appropriate action. Whether it's an ignition failure, a water temperature spike, or a condensate drainage problem, each error code provides valuable information about the problem at hand. Ignoring these error codes or failing to address them promptly can lead to further complications and potentially expensive repairs or replacements.
Seeking professional assistance when dealing with error codes is crucial. Licensed contractors have the expertise and knowledge to diagnose and resolve the issue effectively. They can interpret the error codes accurately, determine the underlying cause, and implement the appropriate solution. By relying on professionals, you can ensure the optimal performance of your Noritz tankless water heater and avoid unnecessary headaches down the line.
Benefits of Checking Error Codes
There are several benefits to checking error codes on your Noritz tankless water heater:
- Early detection of problems: Error codes allow you to identify issues at an early stage, preventing them from worsening or causing further damage.
- Prompt troubleshooting: Knowing the specific error code helps you troubleshoot the problem effectively and take appropriate steps to resolve it.
- Cost-effective maintenance: By addressing issues promptly, you can minimize the need for extensive repairs or replacements, saving you money in the long run.
- Optimal performance: Resolving error codes ensures that your Noritz tankless water heater operates efficiently, providing you with a reliable supply of hot water.
Make it a habit to check the error codes on your Noritz tankless water heater regularly. By doing so, you can catch potential problems early on and ensure the longevity and performance of your unit.
How to Reset Your Noritz Tankless Water Heater
If troubleshooting methods do not resolve the issue with a Noritz tankless water heater, resetting the unit can be attempted. This involves unplugging the heater from the wall and waiting for two minutes before plugging it back in. It is crucial to note that turning off the water heater with the remote control does not reset the unit. If the tankless water heater continues to have problems, it is recommended to seek professional assistance.
Resetting the Noritz tankless water heater can help clear minor glitches or errors that may be affecting its performance. This simple step allows the unit to restart and can potentially resolve issues such as error codes or faulty settings.
Here are the steps to reset your Noritz tankless water heater:
- Locate the power supply to the tankless water heater and unplug it from the wall.
- Wait for at least two minutes to allow the unit to fully power down.
- After the waiting period, plug the unit back into the power supply.
- Wait for the tankless water heater to restart and resume normal operation.
If the unit continues to experience problems or error codes even after resetting, it is advisable to contact a licensed contractor or a professional Noritz service technician for further diagnosis and repair. They will have the expertise to identify and resolve any underlying issues that may be causing the problems with your Noritz tankless water heater.
https://www.youtube.com/watch?v=-b07AfE4HNA
Error Code 11: Ignition Failure
Error Code 11 on a Noritz tankless water heater indicates an ignition failure. This error can occur due to insufficient gas supply, airflow issues, or debris on the ignition plug. To troubleshoot the problem, homeowners should first check the gas valve to ensure it is fully open. Additionally, examining the exhaust vent for any obstructions or blockages is essential. If these initial steps do not resolve the issue, inspecting the ignition plug for debris or damage may be necessary.
If the error code persists after checking these components, it is recommended to contact a licensed contractor for further diagnosis and repair. Ignition failures can be complex issues that require professional expertise to resolve effectively. By seeking expert assistance, homeowners can ensure the safe and efficient operation of their Noritz tankless water heaters.
Table:
Error Code Possible Causes Recommended Actions Error Code 11 - Insufficient gas supply- Airflow issues- Debris on ignition plug - Check gas valve- Examine exhaust vent for blockages- Inspect ignition plug for debris or damage- Contact licensed contractor if problem persists
Summary:
- Error Code 11 indicates an ignition failure on a Noritz tankless water heater.
- Possible causes include insufficient gas supply, airflow issues, or debris on the ignition plug.
- Homeowners should check the gas valve, inspect the exhaust vent, and examine the ignition plug for any problems.
- If the error code persists, it is advisable to seek the assistance of a licensed contractor to diagnose and repair the issue.
By addressing and resolving ignition failures promptly, homeowners can ensure the efficient operation and longevity of their Noritz tankless water heaters.
Error Code 16: Water Temperature Spike
Error Code 16 on a Noritz tankless water heater indicates a sharp spike in the outlet water temperature. This issue is often caused by scale buildup, which reduces the heat transfer efficiency of the unit. As a result, the heater compensates by burning hotter, leading to the sudden temperature increase. To resolve this problem, it is recommended to descale the unit by following the manufacturer's instructions or using a water softener to prevent scale buildup.
Scale buildup can occur over time due to the presence of minerals in hard water. The accumulation of scale not only affects the performance of the tankless water heater but also increases energy consumption. Regular descaling or using a water softener can help prevent scale from forming and ensure the efficient operation of the Noritz tankless water heater.
If you encounter Error Code 16, it is advisable to consult a licensed contractor or a professional technician specializing in tankless water heaters. They can provide further guidance on how to address the issue and recommend the most appropriate solution based on the specific circumstances of your Noritz tankless water heater.
Table: Common Causes of Error Code 16 and Their Solutions
Cause Solution Scale buildup Descale the unit as per manufacturer's instructions or use a water softener
Error Code 29: Condensate Drainage Problem
When your Noritz tankless water heater displays Error Code 29, it indicates a problem with condensate drainage. This error typically occurs in condensing tankless water heaters and is caused by a blockage in the condensate drain line or incorrect installation of the condensate drain piping.
Proper condensate drainage is essential for the safe and efficient operation of your tankless water heater. When the condensate drain is blocked or improperly installed, it can lead to water leakage and potentially damage the unit. That's why it's crucial to address this error code promptly.
If you encounter Error Code 29 on your Noritz tankless water heater, we recommend contacting a licensed contractor to inspect and resolve the condensate drainage issue. They will have the expertise to identify and remove any blockages in the drain line or correct any installation errors. By addressing this problem, you can ensure the proper functioning of your tankless water heater and prevent further complications.
Error Code Cause Resolution Error Code 29 Condensate drainage problem Contact a licensed contractor to inspect and resolve the issue. They will remove any blockages in the drain line or correct installation errors.
Error Code 73: Improper Circuit Board Settings
When an Error Code 73 appears on your Noritz tankless water heater, it indicates that there are improper circuit board settings. This error can occur if a jumper connection or dip switch is changed while power is supplied to the heater, or if the circuit board is improperly programmed. To resolve this issue, you can try unplugging the unit from the power source for 30 seconds and then plugging it back in. This simple reset may clear the error code and restore the proper functioning of your tankless water heater.
If the Error Code 73 persists even after resetting the unit, it is advisable to contact a licensed contractor for further assistance. They will have the expertise to diagnose the exact cause of the error and make the necessary adjustments or repairs to the circuit board. Tampering with the circuit board without professional knowledge may lead to further complications or damage to the unit, so it's best to leave it in the hands of qualified professionals.
Proper circuit board settings are essential for the optimal performance of your Noritz tankless water heater. The circuit board controls various functions of the heater, including ignition, fuel supply, and temperature regulation. If there is a problem with the circuit board settings, it can affect the overall operation of the unit and cause error codes to appear. By addressing Error Code 73 promptly and seeking professional assistance, you can ensure that your tankless water heater functions efficiently and provides you with a reliable supply of hot water.
Conclusion
In summary, Noritz tankless water heaters are highly efficient appliances that provide a continuous supply of hot water. However, they are not immune to problems. Understanding the common error codes associated with Noritz tankless water heaters is essential for homeowners to address any issues promptly.
By familiarizing themselves with error codes such as Error Code 11 (ignition failure), Error Code 16 (water temperature spike), and Error Code 29 (condensate drainage problem), homeowners can take the necessary steps to resolve these problems. It is important to remember that troubleshooting and resolving these issues often require the expertise of a licensed contractor.
Regular maintenance, such as cleaning the unit, descaling, and using a water softener, can help prevent certain issues from occurring. Additionally, promptly addressing any leaks, insufficient heating, or ignition failures with the assistance of a professional will ensure the optimal performance of the Noritz tankless water heater, providing homeowners with a consistent supply of hot water.
FAQ
What are the most common error codes on Noritz tankless water heaters?
The most common error codes on Noritz tankless water heaters include Error Code 11 (ignition failure), Error Code 12 (weak flame), Error Code 16 (water temperature spike), Error Code 29 (condensate drainage problem), Error Code 73 (improper circuit board settings), Error Code F76 (communication breakdown between two units), and Error Code 90 (combustion abnormality).
How can I troubleshoot Noritz tankless water heater problems?
To troubleshoot Noritz tankless water heater problems, start by identifying the specific error code displayed on the unit and addressing the underlying cause. Check the gas supply, airflow, and ignition plug for any issues. Adjust gas valves, clear obstructions, or clean the unit as necessary. Regular maintenance tasks such as descaling or using a water softener can also help prevent certain issues.
Why is my Noritz tankless water heater not heating effectively?
Noritz tankless water heaters may not be heating effectively due to factors such as insufficient gas supply, airflow problems, or a weak flame. Check the gas valve, ensure proper airflow, and clean the ignition plug. If the problem persists, contact a licensed contractor for further assistance.
How can I fix a Noritz tankless water heater that is not igniting?
If a Noritz tankless water heater fails to ignite, it may indicate issues with the gas supply, airflow, or debris on the ignition plug. Check that the gas valve is open, the exhaust vent is unobstructed, and the ignition plug is securely attached and free of debris. If the problem continues, contact a licensed contractor for professional assistance.
Why does my Noritz tankless water heater keep shutting off?
Noritz tankless water heaters that continuously shut off may have problems with circuit board settings or other underlying issues. Try unplugging the heater for 30 seconds and then plugging it back in. If the problem persists, it is advisable to seek the assistance of a licensed contractor to diagnose and fix the problem effectively.
What should I do if my Noritz tankless water heater is leaking?
Leaks in a Noritz tankless water heater can occur due to issues with internal components or improper installation. Turn off the water supply to the unit and contact a licensed contractor to assess and repair the leak.
Why is it important to check error codes on a Noritz tankless water heater?
Error codes displayed on Noritz tankless water heaters provide valuable information about underlying problems that may go unnoticed. These error codes serve as an early warning system, allowing homeowners to address issues before they escalate and potentially result in expensive repairs or replacements.
How do I reset my Noritz tankless water heater?
To reset your Noritz tankless water heater, unplug the unit from the wall and wait for two minutes before plugging it back in. Note that turning off the water heater with the remote control does not reset the unit. If the tankless water heater continues to have problems, it is recommended to seek professional assistance.
What does Error Code 11 on a Noritz tankless water heater indicate?
Error Code 11 on a Noritz tankless water heater indicates an ignition failure. This can be caused by insufficient gas supply, airflow issues, or debris on the ignition plug. Check the gas valve, exhaust vent, and ignition plug for any problems. If the issue persists, contacting a licensed contractor for further diagnosis and repair is recommended.
What causes Error Code 16 on a Noritz tankless water heater?
Error Code 16 occurs when there is a sharp spike in the outlet water temperature of a Noritz tankless water heater. This is often caused by scale buildup, which reduces heat transfer efficiency and leads to the unit burning hotter to compensate. Descal
