How to Fix Takagi Error Code 711

There’s nothing quite as annoying or inconvenient as turning on your faucet and being met with a stream of cold water when you’re expecting a hot shower. When this happens, you’ll likely run into a more severe error code like Takagi error code 711. This error code is one of the most common in Los Angeles County and its surrounding areas.

After 15-plus years of servicing the greater Los Angeles area, we know how frequent error codes pop up and, more importantly, how to diagnose and address them. Our 13-plus years of working with and installing Takagi tankless water heaters give us a keen understanding of what makes these machines tick, so we can get our members’ homes back up and running.

In this article, we’ll fill you in on what Takagi tankless water heater error code 711 means and how to fix it. Just to give you a heads-up, you will need the help of a professional to resolve this error code successfully.

Before we get started, let’s clear the air on some questionable information we’ve seen floating around. Some articles may direct you to simply unplug your Takagi tankless water heater and plug it back in to resolve the error code. This strategy may only get rid of the code, but the underlying issue will certainly still pose a problem.

With that little primer out of the way, let’s jump in by defining error code 711.

What Does Takagi Error Code 711 Mean?

Takagi error code 711 triggers when there is an issue with the unit’s thermal fuse. This means it is more severe than just a maintenance code like error code 991. While the error code will trigger based on an issue with the thermal fuse, there’s actually a bit more going on than just with that component.

If you’ve skipped annual maintenance and get error code 711, then chances are your heat exchanger isn’t in good shape. A lack of maintenance can cause all sorts of issues with your heat exchanger. From pinhole leaks to lesser efficiency, any issue with a heat exchanger is a serious one.

In the case of Takagi error code 711, your heat exchanger will have overheated from working too hard based on another issue that could have been prevented with maintenance, like excess build-up. Overheating the heat exchanger is what causes problems with the thermal fuse, which triggers error code 711.

So, How Do You Fix Takagi Error Code 711?

Because Takagi error code 711 can’t be resolved without the help of a professional, the first thing you’ll need to do is get in touch with a certified technician. Your best bet in getting this error code resolved in a timely manner is by reaching out for help because there is no easy fix to this problem.

The first thing your technician will do when they arrive is inspect the Takagi tankless water heater itself before moving on to a thorough inspection of your plumbing system to ensure no other issues are contributing to the error code.

Once the technician completes the inspection and narrows the issue down to the unit itself, they’ll likely break some hard news. Because Takagi error code 711 is heat exchanger related and the thermal fuse has been damaged, there is likely no other course of action other than to replace the heat exchanger or replace the unit, depending on the age.

After your technician lays out your limited options, they will inform you that annual maintenance is a nearly surefire way of preventing major breakdowns like these from occurring in the future. Maintenance ensures your heat exchanger is cleaned out and descaled on a regular basis, which can prevent overheating and early breakdowns altogether.

Running into Other Issues?

While Takagi error code 711 is a major error code, there are plenty of other ones you might run into before you run into something so major. For instance, running into Takagi error code 991 is a good sign that your tankless water heater may run into something serious sooner rather than later.

Keeping an eye on the error codes that pop up and understanding what they mean can save you thousands in the long run. Check out this full list of the most common Takagi error codes to brush up on what your Takagi tankless water heater might be trying to tell you.

If you live in areas with hard water, like the greater Los Angeles area, it’s a wise choice to understand these error codes to help you prevent future issues. Hard water causes an excess build-up in tankless water heater heat exchangers, which can cause pinhole leaks and overheating.

Getting a Grip on Takagi Error Code 711

We’ve filled you in on what Takagi error code 711 means and how to fix it, along with a couple of tips to prevent future issues from cropping up. Now, you can confidently call in for help and explain your issue clearly, so you can get the right help to resolve the error code and get your home back in working order.

Having over 13 years of experience working with Takagi, we understand how these tankless water heaters work inside and out. We’ve used that knowledge to help our community and its surrounding areas when they come across these types of issues.

If you’re having trouble with an error code or need to schedule annual maintenance, visit our tankless water heater service page or click one of the below buttons to book a consultation.