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Home»Noritz troubleshooting: Understanding water heater error codes

Noritz troubleshooting: Understanding water heater error codes

Noritz Troubleshooting Steps For Tankless Water Heaters

If you’re looking for a dependable and energy-efficient tankless water heater, chances are you’ll find one made by Noritz in Canadian homes. Having said that, water heater malfunctions do happen, so it’s helpful to know what the Noritz error codes mean when they appear on the control board.

In this article, we’re explaining all the error codes along with how to solve those issues.

Noritz Tankless Water Heater Error Codes and Solutions

Error Code 11: Ignition Failure

This is one of the most common error codes that Noritz owners may face. This could be due to the water heater failing to ignite, which can be caused by an insufficient gas supply, inadequate airflow, or obstructions on the ignition plug.

  • Solution: Make sure the gas is turned on and that it meets the unit’s specs. Make that the ignition plug is clean and free of any debris. Make sure the gas pressure and airflow are accurate by using a manometer or other professional equipment.

Error Code 12: Flame Loss

This means that the flame, while lit, continues to disappear. Possible causes include reduced gas pressure or blocked airflow.

  • Solution: The gas valve must be completely open and the exhaust vent must be clear. The gas pressure might require an expert’s assistance.

Error Code 16: Sharp Spike in Outlet Water Temperature

This error code, which is usually caused by scale development, indicates that the heat transfer efficiency has decreased.

  • Solution: Perform descaling procedures or install a water softener to manage hard water issues. Regular maintenance is advised to prevent recurrence.

Error Code 29: Condensate Drainage Issue

In condensing models, this code signifies blockages or incorrect installation of the condensate drain line.

  • Solution: Ensure the drain line is correctly installed and free from blockages. Regular checks can prevent this issue.

Error Code 73: Improper Circuit Board Settings

Usually happens when someone is fixing something or troubleshooting and accidentally changes a setting on the circuit board.

  • Solution: As a solution, try unplugging the device for 30 seconds and then reconnecting it to reset it. A professional circuit board recalibration may be required if the problem continues.

Error Code 90: Combustion Abnormality

This error results from an improper air-to-fuel ratio, leading to incomplete combustion.

  • Solution: Check for any blockages in the air intake or exhaust systems. Verify correct gas pressures and adjust if required. This typically requires a professional assessment.

Error Code F76: Communication Failure between Two Connected Units

This code appears when two tankless units are interconnected and there is a communication breakdown.

  • Solution: Ensure that only one remote control is used to operate both units. Check the quick connect cord and connections for any faults.

Additional Error Code Insights:

  • Error Code 14 and Error Code 20: These codes relate to issues with the thermal cut-off and high-limit switches, respectively. They often require resetting the heater or replacing affected components.

  • Error Codes 61 and 65: These are related to sensor and valve malfunctions, necessitating checks or replacements of the RPM sensor and water adjustment valve.

  • Error Code 94: Indicates exhaust overheating, requiring a shutdown, filter cleaning, and system flush.

It is important to know the error codes for your Noritz Tankless water heater to fix problems quickly. Here are a few of the most common noritz tankless water heater error codes, what they mean, and how to fix them:

Calgary Tankless Water HEater
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Tips for Efficient Operation of Noritz tankless water heaters

A step-by-step guide on writing a business plan, including troubleshooting tips for non-functioning fireplaces.Consistent maintenance is essential. Descaling the heat exchanger is a part of this, and it's crucial in places with hard water. As a system grows larger, its efficiency drops and it becomes more likely that it will fail.

To keep debris out of your tankless water heater, it has inlet filters. If you want to keep things running smoothly and keep the internal parts in good condition, you should clean or replace them often.

Keep everything out of the air intake and the exhaust vents. Inefficient and perhaps dangerous combustion can result from blocked vents.

Energy can be wasted if the temperature is set too high. Water heaters typically operate at a temperature of 120 degrees Fahrenheit, although this can be adjusted to suit your needs. Avoiding overheating and excessive mineral buildup is achieved by this.

Using a water softener can keep your water heater efficient and reduce the need for maintenance if you live in a hard water location. Scale buildup inside the heater is a major hassle to remove.

Verify that the gas pressure meets the requirements specified for your particular model. The unit's capacity to heat water efficiently and other problems, such as ignition failure, might be impacted by incorrect gas pressure.

Verify that your water heater is not leaking gas or water regularly. Efficiency drops and danger lurks around every corner when there are leaks.

It is essential to install venting correctly. Poor air quality and reduced heating efficiency might result from improper venting. Make sure the venting has been inspected by an expert and meets all code requirements.

Periodically cleansing the system helps eliminate any particulate buildup that might hamper its efficiency, depending on your water usage and quality.

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Choosing Comfort Union's Professional assistance for your Noritz tankless water heaters

Comfort Union is well-versed in the ins and outs of Noritz tankless water heater maintenance and the difficulties that may develop with such high-tech systems. When it comes to installing or repairing your water heater, our licensed experts are the ones to call because they have received extensive training in the complexities of Noritz systems.

From identifying and fixing essential issues including gas pressure and supply adjustments, combustion anomalies, and condensate drainage problems to fixing persistent error codes, we cover it all. Our thorough attention to each assignment is something we take great pride in at Comfort Union. To guarantee peak performance and durability, we inspect and fix your water heater from top to bottom.

At the core, everything we do is driven by our dedication to providing exceptional service. So if any error code persists in your water heater, you know who to call! Before we start any work, we speak with you to get a good grasp on your unique requirements, and then we provide thorough, upfront estimates. Repairs aren’t the end of our service, though. We offer regular maintenance to ensure the optimal performance of your Noritz tankless water heater, extending its lifespan and warding off any potential problems.

Contact us today to learn more about our efficient services or visit our website for more details.

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