Tankless water heaters have the capacity to heat the water immediately without the need for a storage tank.
When you turn on the hot water faucet the cold water pass through a heat exchanger and an electric element or natural gas burner makes the water hot.
If you have tankless water heaters you are familiar with all the error codes or disadvantages you have to deal with.
There are numerous problems that depict why your heater has suddenly stopped giving hot water. In this guide, we have gathered a few common error codes of Navien water heater that will help you get rid of them without any hassle.
Let’s get started.
Navien Water Heater Error Codes and How to Fix Them
Below is the detailed list of all the errors that you might have to face or currently facing if you have this heater. Here we go.
1. Error Code – E001
This error occurs when the water boils in the heat exchanger. So what is the solution?
How to Fix
If you are dealing with the same error all you have to do is make the inlet water strainer tidy and spotless. Later, have a look at the flow sensor that is automatic.
If it is all clear then move ahead to a heat exchanger and give it a good wash with a solution. Also, go through the PCB board and replace it if you find it replaceable.
It is how you can easily fix this issue without putting in a lot of effort.
2. Error Code – E002
This issue occurs when there is a low pressure in the water so how to deal with it?
How to Fix
You have to wait until the water supplement is discontinued. The reset will be automatic.
3. Navien error code 003
This error occurs due to ignition failure and to cover this issue all you have to do is.
How to Fix
Move to the main gas supply and check if everything is clear or not. Later ensure that the power is turned on and do not forget to look after the igniter to ensure its spark.
It is how you can clear out Navien code e003 error.
4. Error Code – E004
Here comes another error code that is E004 and it normally occurs when the wrong flame has been noticed out.
How to Fix
To get rid of this issue check that the ground wire is properly affixed. Later, have a look at the igniter in order to ensure it’s spark and you are all done.
5. Error Code – E007
This error code occurs when there is a problem in the hot water outlet and to deal with it you have to…
How to Fix
Have a look at the thermistor and replace it if necessary or required. The same case is with Error E008.
6. Error Code – E009
If your fan motor doesn’t work appropriately then this error occurs. What you have to do is…
How to Fix
Have a look at the air filter and properly clean it from the inside. Also, check the fan motor that whether it is working well or not because the error usually lies there.
If the nominal operating voltage is enough in the fan but it pulses then you need to replace it soon to fix this issue.
7. Error Code – E010
There is a whole list of errors you might face if you have this tankless water heater. The error E010 is due to faulty Air pressure.
How to Fix
To get rid of the venting problem have a look at the vent pipe and remove the errors if any. Do not forget to check the air filter.
Chances are there might be a problem with Air Pressure Flow Sensor so if you detect any, you need to replace this sensor. If you are unable to solve this issue at home, you can call a professional as well.
8. Error Code – E011
This error is due to high water pressure and it occurs when the sensor detects this high pressure.
How to Fix
Have a look at the water pressure sensor that should reset automatically. If it doesn’t then be ready for the replacement.
9. Error Code – E012
This error can be occurred due to numerous reasons so you can not name only 1. However, the most common is flame loss.
How to Fix
First, move towards the main gas line and ensure that the valve is open, and if it doesn’t then open it instantly. There should not be any hurdle in the intake air pipe.
Afterward, make sure that the unit is properly attached to the power supply. After ensuring the gas pressure move towards the burner and gas valve assembly. Everything must be clear.
10 Error Code – E015
This issue happens when there is something fishy on the control board and you might need to change it.
How to Fix
Have a look at the power supply and be concerned about the ground fault circuit. Even if your PCB board is working efficiently, there are a few other boards that need your attention.
These are a few errors that you might have to face if you are using the same tankless water heaters. However, the list goes on.
FAQs – Frequently Asked Questions
Let’s quickly have a look at a few queries that people usually talk about regarding Navien abnormal PCB and how to reset them.
How Do You Clear the Error Code on a Navien Tank?
There are different types of errors you have to deal with as already mentioned above. Each error requires a different solution and you must have the replacement parts as well to fix this issue instantly.
What Does E 003 Mean on Navien Tankless Water?
E 003 is an error that occurs due to ignition failure. To cover up this problem, have a look at the main gas supply and check that the power is turned on. It is better to ask a professional to deal with this issue.
How to Reset Navien Tankless Water Heater?
There is a reset button that you need to press for this purpose. However, if the issue is still there then call technical support.
Why Does My Navien Water Heater Keep Shutting?
It can be due to high resistance where a heavy amount of heat originates that also causes a fire. If the electrical connection in your water system is loose then it keeps tripping.
Why Do I Have to Keep Resetting My Tankless Water Heater?
This is a sign that you might need to fix a big issue including loose wiring, grounding issue, a faulty thermostat, corroded parts, etc.
Have a look at each and every detail so that the problem doesn’t become big enough.
Final Thoughts
This was all about Navien error codes of tankless water heaters. These errors can occur to anyone so do not worry because each error has a solution as well.
I have tried to cover as many errors as you could, however, the list is long. It is better to call an experienced person if you have no knowledge regarding these issues. I hope this guide will help you go through these problems easily.
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