Navien E438 Error Code on the front panel display indicates the recirculation pump is working abnormally. So, what you need to do in this case is- check the recirculation pump and ensure it’s operating properly. Apart from this, your Navien tankless unit can also pop up the error message due to a bad check valve…
Dirty or restricted air intake filter is the main culprit that causes your Navien Tankless Water Heater to throw the error code e110. Your water heater will not function unless you clean the air intake filter. It means you can only clear the fault code e110 from the display when you remove the blockage from…
This is a complete troubleshooting guide on Navien Tankless Water Heater Code E003. What I am going to disclose in this article: In short, you can learn how to clear error code E003 and let the water heater ignite & operate flawlessly. So, let’s get started. What Is Error Code E003 On Navien Tankless Water…
Some sort of noise out of your Navien recirculation pump is normal. However, if it generates annoying or buzzing noise, there is something wrong with the system. Generally, your Navien recirculation pump will produce a humming noise because of the wrong size primary loop, not purging the recirculation pump, or foreign materials getting into the…
Navien Tankless Water Heater cycles on and off due to a clogged faucet aerator, bad flow sensor, and a restricted cold water inlet filter. Apart from these, clogged exhaust venting and defective 3-way valves can also cause the unit to cycle on and off every 8-10 seconds. All the culprits I mentioned actually cut-off the…
This is a complete guide on Navien Tankless Water Heater Maintenance. From this guide, you will learn: In short, you can learn everything you need to know about tankless water heater maintenance, which will help prolong the water heater life. So, stay in tune with this guide till the end. Navien Tankless Water Heater Maintenance…
Scale or mineral deposit buildup in the heat exchanger is one of the main reasons that prevent your Rinnai Tankless Water Heater from getting hot enough. Apart from this, your Rinnai water heater will not deliver enough hot water if you set the temperature too low or any error codes displayed on the controller. If…
This is a complete guide on Navien Recirculation Settings. What I am going to discuss in this article is- Without further ado, let’s dive in. Navien Recirculation Settings: Everything You Need To Know Every ‘A2’ model On Navien Water Heaters, you can choose two pre-heating modes. They are: If you want to select or activate…
Rinnai Tankless Water Heater No Hot Water [7 Easy Solutions] Rinnai Tankless Water Heater will produce no hot water because of these reasons: Throughout this guideline, I will show you how to troubleshoot these issues and fix them. So, keep reading till the end. Rinnai Tankless Water Heater No Hot Water [7 Easy Solutions] Now,…
Tankless water heaters, whether it comes from Navien or Rheem, function a little bit differently than a standard tanked unit. So, the problem you will experience with a tankless unit will be different. For example, water goes cold while in the shower is the favorite one. There are several reasons responsible for this issue. But…
Your Navien Tankless Water Heater will deliver no hot water due to the following reasons: In this Navien troubleshooting guide, I will walk you through every step to troubleshoot those issues. Plus, I will show you how to fix those water heater problems. So, read on between the lines to discover the solution and let…
Navien 240A Tankless Water Heater has a number of DIP Switches. They control the entire functionality of your water heater. So, it’s indispensable for you to learn about the DIP Switch Settings to make it easy to run the unit. And this guide will inform you about the DIP switches, their location, and how you…
