Noritz error code 14

Noritz error code 14: If you are encountering the Noritz error code 14 on your water heater, it typically indicates a problem with the thermal fuse or overheating. This issue may lead to the unit shutting down for safety reasons. To resolve this, it’s recommended to check the thermal fuse, clean the unit for any obstructions, and ensure proper ventilation. If the problem persists, contacting a professional for further assistance is advised.


Noritz error code 14 – What could be causing this error?

When dealing with a Noritz error code 14, there are several potential causes that could be triggering this issue. Understanding these causes can help in troubleshooting and resolving the error effectively. One common reason for encountering error code 14 could be related to a problem with the water heater’s ignition. Additionally, issues with the gas supply, such as low gas pressure or a blockage in the gas line, could also lead to this error code. Furthermore, a dirty or malfunctioning flame rod might be causing the error. Faulty wiring, sensor problems, or issues with the control board are other potential culprits behind a Noritz error code 14.

Overall, it is essential to carefully inspect and evaluate each of these possible causes to diagnose and address the error correctly.

Noritz error code 14 – How to Fix?

If you are encountering Noritz error code 14, it indicates a thermal fuse problem in your tankless water heater. To resolve this, please follow these steps:

  1. Turn off the power supply to the water heater immediately to prevent any further damage or safety hazards.
  2. Locate the thermal fuse inside the unit (usually near the heating elements) and check for any signs of damage or a blown fuse.
  3. If the thermal fuse is faulty, it needs to be replaced with a new one of the same rating.
  4. After replacing the fuse, turn the power back on and test the unit to ensure the error code 14 has been resolved.
  5. If the issue persists, it is recommended to contact a professional technician for further diagnosis and repairs.

Regular maintenance and prompt fixing of errors like Noritz error code 14 can help ensure the efficient operation of your tankless water heater.


Noritz error code 14 indicates a problem with the overheating sensor. It is crucial to address this issue promptly to prevent any potential damage or safety hazards. Contact a professional technician for assistance in diagnosing and resolving the error code 14 on your Noritz water heater for safe and efficient operation.

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