How to Fix Noritz Error Code 12

If you own a tankless water heater, chances are you’ll come across an error code or two. Noritz tankless water heaters are no different than any other brand in this regard. However, some error codes, like Noritz error code 12, are more common than others in certain regions. Luckily, this article will shed light on how to fix Noritz error code 12.

For 20 years, we’ve diagnosed and resolved error codes on countless Noritz tankless water heaters. Our close partnership with Noritz affords us unique training opportunities for our technicians to hone their skills with Noritz tankless water heaters. Because of this relationship, we have the inside scoop on what makes Noritz tankless water heaters tick.

In this article, we’ll fill you in on what Noritz error code 12 means and how you can go about addressing your issue. There is no DIY solution, meaning you’ll need the help of a professional.

Let’s jump in by understanding what Noritz error code 12 means.

What Does Noritz Error Code 12 Mean?

If you come across error code 12 on your Noritz tankless water heater, it means there is a weak flame or none at all. While this sounds pretty simple, the root of the issue could be a couple of things.

Your Noritz tankless water heater could be suffering from inadequate gas pressure or airflow. This issue could be caused by something as simple as a blockage in the exhaust or intake or a component issue, like an undersized gas line.

Like the majority of error codes, this one can be dangerous to resolve on your own. You may also not have the right tools to deal with the issue. On top of these concerns, you’ll also void your warranty if you don’t have a certified technician do the heavy lifting.

So, How Do You Fix Noritz Error Code 12?

Well, the first thing you’ll need to do is call up your local tankless water heater service company. From there, they’ll dispatch a technician to access your tankless water heater and, in some cases, your entire plumbing system.

Once the problem is sniffed out, the solution could be as simple as removing debris from the exhaust or intake. On the flip side, it could be more complicated if the issue is an undersized gas line.

In many cases, the issue is simply stuck debris, meaning the issue can be easily resolved. However, a great way to prevent debris issues is by performing yearly maintenance.

If you’ve owned your tankless water heater for some time now and haven’t scheduled routine maintenance, then it is highly advised you do so.

Performing regular maintenance will prevent debris issues, as well as many other types of problems that can set off an error code on your Noritz tankless water heater. Many manufacturers are also keener on honoring warranties if you can provide a maintenance log.

Running into Another Issue?

you’ll probably run into other error codes throughout your Noritz tankless water heater’s life. There are plenty of common error codes that pop up, some of which are more common in specific regions than others.

For instance, if you live in an area with hard water, like Los Angeles County and its surrounding areas, you may see more error codes if you don’t have proper water treatment. Similarly, if you forgo annual maintenance, then you run the risk of early breakdowns and maintenance codes popping up on your Noritz tankless water heater.

No matter the error code, the best bet is to get a technician out to your home for an inspection as soon as possible. Doing this will prevent further damage and ensure the safety of your home and family. You’ll also get back to having running hot water sooner rather than later.

Ready to Resolve Noritz Error Code 12?

We ran through what Noritz error code 12 means and how to resolve it. Now, you can feel confident in taking the right steps to get your home back up and running in working order without second guessing if now is the time to call a technician.

After building a working relationship with Noritz, we’ve been afforded key insights into how the company’s tankless water heaters work, making it a breeze for us to come in and diagnose and address your Noritz tankless water heater issues. This goes double when it concerns our Los Angeles-based customers who experience some of the most common Noritz error codes.

If you’re dealing with an error code now and live in Los Angeles County or one of its surrounding areas, visit our online scheduler or click one of the buttons below to schedule a consultation.

For those curious about how to prevent error codes from interrupting your life in the future, read up on tankless water heater maintenance.