When it comes to meeting your requirements for hot water with tankless water heaters, Navien is currently one of the top options available on the market today.
This powerful brand was developed specifically to provide you an infinite supply of hot water on demand while requiring a minimum amount of upkeep on your part.
It has an exceptionally high life expectancy and uses very little energy, making it the best tankless water heater on the market.
Problems will not present themselves to you very often, yet there is still a possibility that they may.
The following is a helpful guide that will assist you in resolving any issues that may arise with your Navien tankless water heater.
Let’s take a look at some of the issues that might arise with a Navien tankless water heater, as well as the remedies that can be used to fix them.
Issues with the Navien Flow Sensor
It’s possible that the flow sensor on your Navien tankless water heater is malfunctioning, which would explain why you don’t have any hot water coming out of it.
In most cases, the issue may be remedied by opening and closing the pressure relief valve that is located close to the exit of the heater.
In such case, get in touch with us so that we can service the sensor.
In older models, flow sensor problems might arise if the sensors get corroded over time, which can ultimately result in the heater being turned off.
This can be fixed by removing the clamps that are attached to the sensor and taking it out to clean it, but it is possible that the issue may arise once again in the future.
A sensor made of corrosion-resistant stainless steel is a superior alternative to replace the one that is already installed.
You may also eliminate contaminants from the water by installing a filter in the water input that is located before the heater.
If your heater is getting on in years and you still have problems with the flow sensor on your tankless water heater, you may be better off purchasing a new one.
What Exactly Does The Error Code For My Navien Tankless Water Heater Mean?
The error codes that are incorporated into the unit’s motherboard to assist you in diagnosing Navien tankless water heater issues make it possible for you to simplify a significant portion of the Navien tankless water heater troubleshooting process.
The following is a brief overview of some of the most widespread codes.
- Error Code E003 – Ignition failure
To correct this, check to see that the main gas supply valve is open.
- Error Code E004 – False flame detected
To fix this, check the grounding of the electrical cable and make any necessary adjustments.
- Error Code E012 – Flame loss
Unplug the device in order to fix it.
Take off the air intake filter and clean it with running water once you’ve done so.
Wait for it to dry completely before replacing it in its original position and turning the machine back on.
- Error Code E515 – Unusual functioning of the PCB
Fix: To correct this, check the grounding of the electrical cable and make any necessary adjustments.
- Error Code E760 – It is time to purge your water heater
Fix: For instructions, see the owner’s handbook or get in touch with a plumber.
If you find any additional error codes when troubleshooting your Navien tankless water heater, it is very probable that you will want the assistance of a service specialist in order to resolve the issue.
Don’t be concerned; we are never more than a phone call away!
Additional Concerns Regarding Your Tankless Water Heater from Navien
If you have an older model, you can run into additional issues that are less common in more recent versions but still possible.
The following is a list of some of the most common problems that a skilled plumber or Navien expert should be able to resolve:
#1. A Heat Exchanger That Is Cracked
If your heat exchanger has already started to fracture, this will result in the formation of a space through which hazardous vapors may escape.
There is no way to correct this.
You will need to update to a tankless water heater that is manufactured by Navien that is more recent.
Even though something like this is very unlikely to occur while a product is still under warranty, you should still check to see if you believe you may be protected and then get in touch with the manufacturer immediately.
#2. Control Board Failure
If your tankless water heater from Navien has started turning on and off by itself without providing an explanation, this might be an indication that the control board is deteriorating.
Your error code could show 003, which in most cases indicates that the igniter is broken.
However, if there isn’t a problem with the igniter, it might be because the motherboard that controls it is experiencing problems.
Request an assessment of your system from trained technicians such as AHWA, who will be able to propose the replacement of your control board as well as alternative solutions.
#3. Navien Tankless Water Heater Is Loud
There might be a number of factors at play here if you’re hearing strange noises coming from your device on a consistent basis.
For assistance in resolving the issue, you will need to get in touch with a qualified expert in the field.
In the event that your product is still covered by warranty, failing to address the issue in a timely manner may result in the coverage being nullified.
- Loose pieces causing the unit’s interior to vibrate
- Vibrations caused by a vacuum in the water line
- There is a problem with the pressure valve.
- Flow sensor that was dirty, causing interference in the gas flow, and as a result, produced strange sounds
#4. The Recirculating Pump Is Not Functioning Properly.
Check that the recirculation setting on the heater is on.
You may find the hot button that you need to push to start the hot water recirculation by consulting the user manual for your appliance.
If this does not resolve the problem, you should seek the assistance of an expert who can verify that it was installed properly.
#5. The Water Becomes Less Hot Over Time
There are several potential reasons why hot water could not be available.
The following are some of the most widespread ones: The following are some of the primary contributing factors:
- There are now too many people utilizing the hot water all at once or in a very short amount of time. You may solve this issue by creating a schedule to spread out use or by upgrading to a bigger water heater that is capable of managing the output. Both of these options are available to you.
- There is a limited amount of gas. If you have a big water heater but a low gas input, you may fix this problem by increasing the amount of gas that flows into the machine.
- The flow sensor has been compromised. This is preventing the water heater from receiving an appropriate supply of gas. To check on this and make the necessary adjustments, you will need to get in touch with an expert.
- The pilot light won’t remain lit for some reason. There are a number of potential causes for this, including a blocked air vent, a broken gas valve, an interruption in the gas supply, unclean burners, or a faulty flow sensor. If cleaning your heater doesn’t fix the problem, you’ll have to get help from a trained specialist in order to have it fixed.
- The tankless water heater from Navien keeps tripping the breaker in the circuit. This might be the result of a faulty device or water seeping into the wires at some point. Every other factor is of an electrical kind. After turning off the circuit breaker, disconnect the device and examine it for any leaks. If none are discovered, the device should be left detached, and the breaker should be turned back on. If the light does not go out, the water heater in your home may be broken. If it turns back on after it has been turned off, the issue is likely with the electrical system rather than the water heater.
If you have any additional questions or issues, you should reference the user manual for your device or get in touch with a repairman to evaluate the problem and provide you advice on how to fix it.