How to Reset Tankless Water Heater: 4 Easy Steps To Follow

You might be facing difficulties in resetting your tankless water heating unit that’s why you landed here. This guide will walk you through the detailed process of How to Reset Tankless Water Heater and bring it back to the functional track.

The tankless water heaters function automatically and can be reset easily by following simple and easy steps. In this article, I’ll be addressing how you can reset the tankless water heaters by yourself in just a few simple steps easily. Stay tuned.

There are several reasons behind the failure of the tankless water heater. The most common causes of failure of tankless water heaters are blocked exhaust or air supply, flame failure, ignition problems, and much more. If you are addressing these similar or any other related issues then it’s high time to get your tankless water heater checked.

How to Reset A Tankless Water Heater – Detailed Guide

If you are thinking of flushing and cleaning your tankless water heater system in order to get rid of impurities, dirt, and many other related issues then it’s an alarming situation to reset your system that involves simple and easy steps.

The best part of these tankless water heaters is that they are easy to use and can be reset easily in less time than conventional tank water heaters. They are equipped with dedicated buttons that can be used to reset the tankless water heater without removing any of its parts.

1. Turn Off the Power Button

Before starting any step, the first and foremost step is to switch off the power button and disconnect all the electrical connections in order to prevent any electric shock. The hardwiring system is required while installing the tankless water heater to a dedicated circuit breaker.

In order to avoid the difficulty of switching off the whole system, the user has to identify the circuit breaker and check the breaker panel that provides electricity to the tankless water heater. Switch off that circuit breaker.

2. Identify the Reset Button

After disconnecting all the electrical connections, the next step is to identify the location of the reset button. Every tankless water heater has its own reset button and the location can vary depending upon the company. Due to this, I will recommend the users to just give a read to the guide in order to determine the exact location of their tankless water heater reset button.

Most tankless water heaters have their reset button present on the front or back side or at the control panel.

3. Push the Reset Button

After identifying the location of the reset button, press the button. I would recommend being patient at this point as it might take some time. In most cases, it can be difficult to press the reset button due to its sticky nature.

However, there are tankless water heaters that are equipped with a reset button that can be pressed easily without any difficulty.

4. Reconnect All the Electrical Connections

The last and final step is to reconnect all the electrical connections in order to observe the working of the tankless water heater. By turning ON the circuit breaker, run the unit for several minutes. It will start heating the water within 10 minutes.

If in case the reset button falls back and trips again, it will be better to call the expert for solving this issue. In the following case, keep the tankless water heater turned off.

When to Reset the Tankless Water Heater

The reset button is a precautionary part of the water heater. It can trip off at times without any cause and so it’s safe to turn it on. Sometimes the reset button won’t turn on if

• Wire issues

If the wiring is damaged then the electricity won’t reach the heater and so it won’t turn on.

• Overheating

Check if the thermostat is normal and if water gets heated above the set temperature this causes the breaker to trip off.

• Malfunctioning thermostat

If the thermostat isn’t working right then the water won’t be heated and the circuit will turn off.

• Use of reset button

The reset button is there to protect the appliance from bigger damage. The reset button avoids damage and is easy to reset within a few minutes. If the above process is not working for you try calling a professional as this indicates a big problem.

Different manufacturers might have different resetting settings so we’ll dig into the detail of how to reset some best-selling tankless water heaters.

Why System Trips?

Sometimes the water gets too hot which causes the switch to trip.

This indicates that the thermostat is not functioning properly. It’s due to a thermostat fault in either the upper or lower heating element.

How to Reset Takagi Tankless Water Heater

Takagi tankless water heater is considered to be one of the high-performance and highly efficient tankless heaters that are equipped with many advanced and beneficial features. The best part of this tankless water heater is that it is easy to use and can also be reset easily with the help of the control panel.

Apart from this, it is also a great option for commercial and residential use. Furthermore, it is also equipped with many security features e.g. internal freeze protection system, air fuel sensor system, water temperature control, etc, providing security to the users.

With the passage of time, this tankless water heater can also cause many problems and hence need to be reset at the correct time in order to avoid further issues. One of the most common issues related to this tankless water heater is that it often provides hard water and installing it in an area of hard water gives the users a hard time as they have to replace the heat exchanger several times. This and many other issues can be solved by resetting the tankless water heater.

The foremost step to resetting a Takagi tankless water heater is to disconnect all the electrical and gas connections in order to avoid short circuits. After that, identify the location of the reset button and then press it for a few seconds.

After releasing the press button, wait for a few minutes and observe the function of the tankless water heater. It will start heating the water and function properly.

How to Reset Rinnai Tankless Water Heater

 

The best part of the Rinnai tankless water heaters is that they are equipped with a significant tool called self-diagnostic ability whose function is to monitor and analyze their operation. It is smart, easy to use, straightforward, and displays the error code, enabling the users to easily identify the problem and decode these codes by using a guide.

However, if this tankless water heater is not working properly due to a blocked air supply, flame failure, or ignition problems, then the user needs to reset the water heater by identifying the solution to these problems that are related to specific error codes.

The error code of blocked air supply is error code 10. In order to solve this problem, identify the venting material that is acceptable to the unit. If the unit accepts the venting material then check the flue inlet or exhaust for removing the blockage.

Moreover, the error code assigned to the ignition problem is error code 11. This is a very dangerous problem to solve and I would recommend calling an expert to solve this problem. But still, by taking certain preventive measures, you can still solve this problem at home.

Before moving further, check that either the gas is connected to a cylinder or gas meter. Most of the time, the gas connection can be wrong or pressure is not applied according to the proper amount or perhaps the meter or the gas line are not of the correct size.

Furthermore, the presence of a large amount of air in the gas line can also be one of the reasons for ignition problems. The best way to solve these problems is to call an expert as it involves technicality.

Other than that, the reason for the appearance of the error code can also be an indicator of replacing the faulty ignitor with the functional one. The last step is to check the gas solenoid valves in order to prevent short circuits.

How to Reset a Rheem Tankless Water Heater

 

Resetting Rheem tankless water heater involves safe, easy, and straightforward steps that everyone can follow. Furthermore, this tankless water heater involves an error code chart for easy detection and identification of the issue and accordingly finding the solution to the respective problem.

This tankless water heater is equipped with a computer board that regulates the heating process, helping the users to deal with various problems.

In order to start the resetting process, the very first and most important step is to disconnect all the electrical connections with the help of remote control. After that, turn off the hot water tap. Identify the electric panel of the unit and remove its’ cover. Then find the reset button of the Rheem tankless water heater which is behind the insulation and press it inwards for a few seconds and then release it.

Furthermore, cover the electric panel again and reconnect all the electrical connections.

If the connection of the gas valve is also disconnected, reconnect those connections as well for analyzing the working of the tankless water heater. Turn on the power button and observe its functioning.

If it starts heating the water then the tankless water heater is repaired. If the problem is not solved even through resetting or error code, then press the reset button at least three times.

How to Reset a Noritz Tankless Water Heater

 

Noritz tankless water heater is another highly durable tankless water heater. The best part of this tankless water heater is that it is equipped with a highly responsive control panel that maintains the temperature of the water heater.

If the tankless water heater is making some issues then resetting the unit can solve many of the related problems. Furthermore, the user can even reset the unit by using the software.

To reset the noritz tankless water heater, the first step is to disconnect all the electrical and gas connections in order to prevent the short circuit. After that, find the reset button and press it hard for a few seconds. The next step is to release the reset button and then turn on the power button to analyze the proper functioning of the water heater. Follow the color of light that changes from red to green and this indicates that the heater is perfectly fine.

Furthermore, search for the knob that is usually present on the front side of the unit through which the user can easily change the temperature of the water. For analyzing the temperature setting of the heater, turn that knob in a clockwise direction and set the temperature at the highest level, reaching its maximum capacity.

The last step is to reconnect all the electrical and gas connections and turn on the breaker, providing electricity to the unit.

How to Reset Marey Tankless Water Heater

 

Marey tankless water heater is a high-quality machine, making the hot water experience for the users worth it. This tankless water heater is reliable, easy to use, compact in size, and available in an affordable price range.

However, the normal functioning of the tankless water heater can be interrupted by various related issues. Most of these common issues are water heater leaking, water heating issue, the noise of the heater, and much more.

These problems can be solved by resetting the tankless water heater by following simple steps. The first step is to disconnect all the connections in order to avoid a short circuit. The next step is to locate the reset button and push it hard for a few seconds and then release it.

Note the color of the light that changes from red to green which indicates that the unit is functioning properly. Furthermore, the next step is to set the thermostat of the water heater by turning the knob to the highest temperature for maximizing the capacity.

After that, turn on the unit by reconnecting all the connections. Unfortunately, if the unit does not function properly and the reset button trips and falls again, then I would recommend that it is better to call the expert to further solve the issues properly.

But before that, it is advised to turn off all the connections again until the issue is not solved properly. Before taking any step further, check the manual guide for clarity.

How to Reset Atmor Tankless Water Heater

Atmor tankless water heater is a globally recommended option because of its high durability and high efficiency. The best part of this tankless water heater is that it operates on electricity and does not function on the gas line.

In most cases, this electrical tankless water heater that is equipped with the reset button can trip off easily because of several reasons including the faulty thermostat, reset button malfunction, loose wiring connections, etc.

Due to the above-listed problem, resetting of the atmor tankless water heater is necessary in order to prevent further issues. The process of resetting starts by finding the electrical panel and circuit label. If the breaker is switched off, then turn it ON and vice versa. Then find the reset button of the unit. Mostly the location of the reset button is neat to the thermostat or it may be placed under the removable metal panel.

After finding the location of the reset button, press it and then release it back. If the reset button is causing a problem, then replace the access panel and then turn the circuit ON. If the water heater works properly, it will provide hot water excessively.

And in case, the tankless water heater is still not working properly, turn OFF and ON the breaker again. Hence, by following these simple two steps, the tankless water heater can easily be reset again.

How to Reset Ecosmart Tankless Water Heater

Ecosmart tankless water heater displays the error code on the small screen, enabling the users to solve the problem easily by searching for the solution in the manual guide. If the error code is displaying on the tankless water heater then it indicates that the water heater is not working properly and needs to be reset again.

The process involves four simple steps that the users need to follow. The first step is to turn off all the electric circuits, gas valves, and hot water faucets. The next step is to switch off the Ecosmart unit and if it comes with the remote then use it to turn it off. Also, turn the knob off in order to control the temperature. After that find the reset button and then press it hard for a few minutes and then release it.

In this way, the unit starts functioning properly and heats the water in less time. Furthermore, if in case after resetting the unit, if still it displays the error code then push the knob for a few seconds again.

The LED display will show CE1 points. After this, turn ON the water supply for 3 minutes and then check the temperature of the water. It will start heating the water and in this way, the water heater starts functioning properly.

How to Reset AO Smith Tankless Water Heater

This is the most common tankless water heater, available in an affordable price range. One of the most highlighted features of this tankless water heater is that it is designed in such a way that offers high security to the users. The reset button of this unit is found under the metal cover which is further hidden under the insulating or protective covering.

A faulty thermostat, old internal parts, electrical problems, bad heating elements, etc are some of the issues related to this tankless water heater. In such a case, resetting the tankless water heater is necessary in order to solve these problems.

By following simple four easy steps, the users can easily reset the tankless water heater at home and convert it into a functional unit. The first step is to turn off all the electrical connections to prevent the short circuit.

Find the electrical panel and look for the water heater. Turn it off to provide security. The next step is to remove the top panel cover from the hot water tank by removing the several screws attached to it. The reset button is then located inside that electrical panel. Also, remove the insulation cover that is there on the reset button. The next step is to press and hold the reset button for a few minutes until hearing the clicking sound.

The last step is to return back to the electrical panel and cover it by turning ON the breaker. The tankless water heater will start heating the water properly in an excess amount.

However, before turning ON the breaker, set the thermostat of the tankless water heater up to the highest level for increasing the capacity of the unit. The reset process is for solving the problem temporarily. For a permanent solution to the problem, the user needs to call an expert.

How to Reset Navien Tankless Water Heater

Besides that, more errors also require resetting of the whole unit. Before resetting the Navien tankless water heater, you should understand these various error codes on display. When you can’t fix the error codes and there are more issues with your water heater, you should go for resetting. Sometimes, these codes won’t occur on display. It also means that it requires to be reset.

The easiest way to reset your Navien tankless water heater is to press the reset button. This button is located in the lowest corner opposite the on and off switch. You have to press the button, and your unit will start resetting. However, if you have tried all the error code solutions and reset the unit yet the problems occur, you should consult the Navien electrical support unit or hire a plumber.

Navien Tankless Water Heater Error Codes and How to Solve Them

Error Codes Malfunction

1. Error Code E001

It is caused by overheating of the unit.

Solution

You must clean the filter and then flush the heat exchanger to solve this issue. Ensure that the water circulates appropriately so that the unit does not overheat again. Sometimes you need to reset the unit.

2. Error Code E002

It is caused when there is low water pressure on the heating side.

Solution

Ensure that the unit receives enough water to complete the circulation this way, the water pressure will be equal in the whole unit.

3. Error Code E003

This error happens when there is an ignition failure in the unit and power failures.

Solution

The best solution to this problem is to ensure that the gas supply is proper and the ignitor produces a spark when the gas flows. Still, if there is any problem, you should replace the ignitor with a new one. Moreover, you should also reset the unit if the problem happens again.

4. Error Code E004

This error code occurs when the unit detects a false flame

Solution

To remove this error code, you must check that the ignitor is producing a proper spark and the central electric cord is connected to the unit in the right way.

5. Error Code E011

This error occurs when there is a high heat pressure on the unit.

Solution

To fix this error, you should first turn the unit off and then drain the water inside it. After draining the water, you must turn on the unit. But if this error shows again, you must check the sensor and change it if necessary.

6. Error Code E012

This error code means that there is a flame loss.

Solution

You must check that the primary wire is connected to the unit property to solve this issue. Moreover, if the error persists, you must turn the unit off, remove the intake filter, and clean it properly. After drying, fix the filters, and the error will be no more.

7. Error Code E016

It is caused due to the overheating of the heat exchanger because of high temperature.

Solution

The best way to solve this problem is to adjust the temperature correctly. If it still happens, you should turn the unit off and then turn it on after 30 seconds. Check the cold water filter and strainers before you clean them. Also, flush the heat exchanger.

8. Error Code E030

This error is caused due when the exhaust overheats.

Solution

The best way to solve this problem is to clean the filter and flush the heat exchanger. Before that, you must switch the unit off for 30 seconds or reset your unit.

9. Error Code E046

This error means a problem with limit control and heat exchanger.

Solution

To solve this issue, you should thoroughly check the unit’s wiring. Look for a damaged wire, especially near the heat exchanger. If you find a broken wire, immediately replace it by calling the Navien technical support unit or resetting it.

10. Error Code E060

This error occurs when there is a problem with Dual Venturi Limit.

Solution

The best solution to clear this problem is to reset your Navien tankless water heater. For that, you must keep reading the article, and you will learn the easy way to reset.

11. Error Code E109

This error occurs when the fan motor is not working correctly.

Solution

To solve this problem, you must check the air filters and the fan motor. If they require cleaning, you must use running water and a toothbrush to clean deeply. Allow it to dry and then fix it back. But if the problem occurs, then you must reset it.

12. Error Code E110

This error is displayed when the unit faces blockage in the exhaust region.

Solution

Check the exhaust pipe for a blockage and clear the intake air filters by cleaning them with water. You can also use a toothbrush for deep and proper cleaning. After the air filters dry out, then you must fix them back. If the error persists, then reset the water heater.

FAQs

Is there a reset button located on my tankless water heater?

Every tankless water heater is equipped with a red colored reset button which is located in different spots, depending upon the company. Most tankless water heaters are equipped with two buttons for controlling the thermostat of the water heater. In order to find and access the reset button, the metal plate has to be removed that keeps the thermostat in position.

Why do I need to reset my tankless water heater?

When the tankless water heater stops heating the water regularly and the thermostat fails to regulate the temperature of the water, then the user needs to reset the tankless water heater for the proper functioning of the system. If the resetting process is delayed, the water heats up so quickly and at a higher temperature which is very dangerous.

Why am I not getting the hot water from the tankless water heater?

In order to solve this problem, check the gas valve and make sure that it is open. Also make sure that all sensors, electrical components, and other wiring systems are in a proper position in order to avoid short circuits. Also, make sure that there is no debris or condensation present on the burner that prevents ignition.

Why does the tankless water heater go cold?

The important feature of the broken flow sensor enables the tankless water heater to run cold as well as hot water. This sensor also measures the flow of water entering the system and provides information to the control board about the amount of water. If in case, cold water is entering the system, then this control board maintains and adjusts the flame.

How do I know if my tankless water heater is bad?

Following are the reasons through which you can detect that your tankless water heater is bad:

• Lukewarm water
• Dropping hot water pressure
• Leaks
• Frequent shutting off the water heater
• Unusual behavior

What type of maintenance does a tankless water heater need?

The best part of these tankless water heaters is that they do not require much maintenance. Furthermore, in order to keep the working of the machine in proper way, they should undergo regular preventive maintenance, and also their gas or electrical components should be inspected once a month.

Conclusion

A tankless water heater is one of the most useful and highly durable appliances that regulate hot water and supply it during dishwashing or taking showers. With the passage of time, the functioning of the tankless water heaters can be interrupted by various types of issues that need to be solved on time.

The best and the easiest way to solve these problems is to reset the tankless water heater to bring it back to its functional track.

These tankless water heaters can be reset by first disconnecting all the electrical and gas connections in order to prevent short circuits. After that, identify the reset button and press it hard for a few seconds.

The next step is to turn the knob of the thermostat in a clockwise direction to maintain the temperature level at the highest point. Turn on the button and then flip the breaker to start the tankless water heater. When the red light turns green, this identifies that the unit is repaired and is back in its functional state.