How to Fix Takagi Error Code 991

Seeing an error code display on your Takagi tankless water heater is never a good feeling. The good news is that many of these codes are easy to resolve with the help of a professional. For more common error codes like Takagi error code 991, technicians can easily identify issues and often resolve them within the same day, so you can get your home back up and running.

We’ve been diagnosing and addressing error codes in Los Angeles County and its surrounding areas for over 15 years. Our experience helping homeowners in the area gave us a comprehensive knowledge base and a keen understanding of what makes Takagi tankless water heaters tick.

In this article, we’ll touch on what Takagi error code 991 means and how you can resolve it. Spoiler alert: you will need the help of a professional.

Before we jump into what this error code means, it’s important to note that there are articles out there that will tell you just to unplug your tankless water heater, and the code will go away. This method doesn’t accomplish anything since the underlying issue will persist, and the error code will reappear.

Now, let’s go over what causes Takagi error code 991 to get a better idea of what’s going on.

What does Takagi Error Code 991 Mean?

If you run into this error code, it means there’s a need for maintenance. This code could point to several potential issues, but none are serious if treated quickly.

Because this is a maintenance code, it’s more than likely that you just need to clean out your Takagi tankless water heater. You could have a dirty fan or even a crusty gas manifold.

While these issues aren’t a death sentence for your tankless water heater, they can still lead to lower efficiency, which translates to higher bills. These factors may also lead to early breakdown and an overall shortening of your Takagi tankless water heater’s lifespan.

So, How Do You Fix Takagi Error Code 991?

The first thing you’ll want to do is call a technician for assistance. Because this error code isn’t an immediate threat to your tankless water heater, and your technician will be able to help you out the same day, there’s no need to panic.

While this error code can lead to serious repercussions down the line, it is easy to fend off with routine cleaning. Your technician will identify the root cause of the error code and perform standard maintenance on your Takagi tankless water heater.

In addition to inspecting your tankless water heater, your technician will also thoroughly evaluate your plumbing system to ensure nothing else is contributing to the error code. On top of this, they’ll also remove any potential blockages in your tankless water heater’s system to resolve any potential risks.

The best way to prevent Takagi error code 991 in the future is by scheduling annual maintenance. Keeping up on maintenance will ensure that your Takagi runs smoothly for years to come, meaning it will reach its maximum lifespan.

On top of being a good practice to prevent issues, performing regular maintenance can also guarantee your warranty stays intact. Some manufacturers require yearly maintenance to keep the unit under warranty. If you can’t show proof of this maintenance, your warranty may be void.

Running into Other Error Codes?

Chances are that you will likely run into more than one error code over the course of owning your Takagi tankless water heater. While some of these are easy to dodge with annual maintenance, others can crop up out of the blue and throw you for a loop. Because of this, it’s always good practice to know what error codes are most common in your area.

Check out this list of the top five Takagi error codes in Los Angeles County and its surrounding areas.

In areas with hard water, like Los Angeles County and its surrounding areas, your heat exchanger needs a bit more attention due to the higher rate of build-up caused by the minerals in hard water. Because of this, you’ll want to pay attention to the types of maintenance codes we’ve discussed here.

In the Know on Takagi Error Code 991

We’ve covered what Takagi error code 991 means and how to resolve it with the help of a professional. Now, you can call in for assistance with confidence while you explain your issue. Staying in the know ensures that you can accurately communicate the issue and that the technician will have a better idea of how they can assist you.

After 15 years in the field, we know how frustrating error codes can be. We take pride in providing assistance through our knowledgeable technicians, so you can get your home back up and running as quickly as possible.

If you need help resolving an error code and live in Los Angeles County or one of its surrounding areas, visit our tankless water heater service page to schedule a consultation or maintenance call.