It’s no surprise that most tankless water heater owners run into an error code or two during their unit’s lifespan. Noritz tankless water heaters are no different, but some error codes are more common than others. Error code 51 is at the top of the list when it comes to common Noritz error codes.
We’ve been diagnosing and resolving tankless water heater error codes in the greater Los Angeles area for over 15 years. On top of our experience in the field, we also have a close relationship with Noritz, giving us unrivaled expertise in the company’s tankless water heaters, including how to fix common error codes like error code 51.
Before we examine what error code 51 is, check out our Noritz Tankless Water Heater guide for a deeper understanding of what the Noritz brand offers.
In this article, we’ll walk you through what error code 51 means and how to resolve it. As a heads up, the solution involves calling out a professional for help.
What Does Noritz Error Code 51 Mean?
If you run into this error code, it means your Noritz tankless water heater is experiencing gas manifold issues or downright failure. You might also find that the issue is caused by water dripping onto the manifold, but you’ll need a technician to diagnose this issue.
Error code 51 will cause gas pressure issues as well. The best thing you can do to pinpoint the issue is to call a technician to your home for a proper diagnosis. Trying to DIY this error code can be dangerous since you’ll have to navigate combustion elements.
So, How Do You Fix Noritz Error Code 51?
As we said, the best and only way to handle Noritz error code 51 is to call for professional help. There are a couple of ways the situation could play out depending on what your technician finds during their inspection. They’ll take a look at your tankless water heater as well as your entire plumbing system to determine the root cause.
Once the inspection is complete, your technician will likely tell your one of two things: there’s water dripping on the gas manifold, or there’s a simple gas pressure issue. While gas pressure is more or less a simple fix, water on the gas manifold is a different story.
Let’s start with the worst-case scenario. If your technician finds water on the gas manifold, they’ll need to replace the component. This repair is pricier than a simple gas pressure issue and takes a bit more time to fix.
On the other hand, if insufficient gas pressure is causing the error code, your technician can simply adjust the gas pressure using the circuit board or keypad. They’ll ensure the gas pressure is correct by referencing Noritz’s specifications for your specific model.
Experiencing Another Issue?
Noritz error code 51 isn’t the only error code you’ll run into over the course of your tankless water heater’s lifespan. There are plenty of common codes, with some even being more common in specific regions.
If you live in an area like Los Angeles County, where we have hard water, you’ll likely experience a maintenance code or two if you don’t have proper water treatment. Likewise, not having a technician out to perform yearly maintenance can lead to early breakdowns and error codes.
Should your Noritz tankless water heater experience any error code, the safest bet is to talk to a professional. Online articles and resources like this one are can point you in the right direction, but keeping your safety in mind is first and foremost. You’ll want to touch base with a technician to prevent injury and to ensure the problem is resolved as quickly as possible.
If you’re curious about what other error codes may pop up in Los Angeles County and its surrounding areas, check out the rest of the most common Noritz error codes so you don’t get caught off guard down the line.
Up to Speed on Noritz Error Code 51
We’ve covered what Noritz error code 51 means and how it can be resolved. Now you can feel confident knowing that picking up the phone and asking for a helping hand is the safest play.
Having a close relationship with Noritz allows us to train regularly on the newest tankless water heaters, as well as gather knowledge on past models. This experience allows us to quickly diagnose and address all types of error codes, including the most common ones in Los Angeles County and the surrounding areas.
Having trouble resolving an error code? Visit our tankless water heater service page to schedule a consultation.
If you’d like to learn how to prevent error codes from popping up in the future, brush up on tankless water heater maintenance. For a closer look at where Noritz tankless water heaters rank among the rest of the brands, read our Noritz brand review to get the full picture.
For new tankless water heater owners or those who inherited their unit through a home sale, get familiar with your tankless water heater reading our Noritz Tankless Water Heater guide.
