Noritz error codes

Noritz error codes are codes that the Noritz tankless water heater displays to indicate specific issues with the unit. These codes can help users identify and troubleshoot problems to ensure their water heater is working efficiently. Understanding these error codes is crucial for proper maintenance and timely repairs. By knowing what each code means and how to address it, users can ensure their water heater continues to operate smoothly.


Noritz error codes – What could be causing this error?

Noritz error codes may appear due to various reasons. One common cause is a problem with the unit’s sensors, which can lead to inaccurate readings and trigger error codes. Another potential issue could be related to a clogged filter or vent, leading to improper airflow and affecting the unit’s performance. Electrical issues, such as faulty wiring or power supply fluctuations, can also result in Noritz error codes. Additionally, internal component malfunctions or software glitches within the system may contribute to the appearance of error codes. It is essential to address these potential causes promptly to ensure the efficient operation of your Noritz unit and prevent further errors.

Noritz error codes – How to Fix?

To address Noritz error codes, it is crucial to first identify the specific code being displayed on your unit. Each error code corresponds to a particular issue with the water heater. Here is a step-by-step guide to help you resolve Noritz error codes:

  1. Identify the Error Code: Check the display on your Noritz water heater to determine the specific error code being shown.
  2. Refer to the Manual: Consult your Noritz product manual for a detailed explanation of the error code and possible solutions.
  3. Perform Basic Checks: Ensure the water heater is receiving power and that there are no issues with the gas or water supply.
  4. Reset the System: Try resetting the unit by turning it off and then on again after a few moments.
  5. Contact Support: If the error persists, contact Noritz customer support for further assistance and possible service.

By following these steps, you can effectively troubleshoot and resolve Noritz error codes on your water heater.


Noritz error codes indicate specific issues within your water heater system. To troubleshoot, refer to the user manual for guidance on resolving common errors. If the problem persists, contact a certified technician for professional assistance. Regular maintenance can help prevent future errors and ensure optimal performance of your Noritz water heater.

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