How to Reset AO Smith Water Heater - Ready To DIY (2022)

AO Smith water heaters have certainly made a name within the industry as a reliable, affordable, and generally long-lasting product. Even so, some units need to be reset and if your water heater is in need of such, what does this process look like?

To reset an AO Smith water heater, locate the red reset button within the electric panel and remove any insulation that may be beneath the panel. Once removed, press the red reset button and hold it down until it clicks, as the click is an indication that the reset was successful.

How to Reset AO Smith Water Heater - Ready To DIY (1)

Water heaters provide a luxury to individuals that many seem to overlook until they are left without the hot water that such units provide. If you are dealing with minor issues from your AO Smith water heater or are looking to see how to reset various components of the unit, there are methods laid out to make sure the reset is successful. To see how to reset an AO Smith water heater as well as other components of the device, continue reading to find what you need.

How to Reset AO Smith Water Heater

Whether you are looking to reset your AO Smith water heater as a whole or are trying to find a way to reset various components of the unit, there are laid out processes that work to ensure that the reset is not only implemented the way it should be, but that the reset is successful and effective as well. If you have an AO Smith water heater and you want to reset the unit, take a look below to see what needs to be done to complete this process.

The most general and effective way of resetting an AO Smith water heater is by pressing the reset button that is located on the unit. This can be found behind the electric panel and once pushed, wait for the button to click to indicate the reset has completed and was successful.

How to Perform AO Smith Water Heater Thermal Switch Reset

How to Reset AO Smith Water Heater - Ready To DIY (2)

There are many other important working parts that ensure the smooth function and overall operation of your AO water heater, such as the thermal switch. This may be a new item to some of you, but for those who know, understand the importance of this device’s function when it comes to keeping you and your home safe. The thermal switch stops the gas supply to the unit when there is too much heat buildup inside the chamber, but how can it be reset?

To perform an AO Smith water heater thermal switch reset, you will need to reset the entire unit. To do this, open the electric panel on the water heater and remove any insulation that is behind the panel. You will then press the red button, hear it click, then the reset will complete.

(Video) HOW TO RESET AN ELECTRIC WATER HEATER ( 2020 )

When you are resetting an AO Smith water heater and are using the reset button to complete this process, the clicking of the reset button is the sound you want to look for to indicate that the button is functioning and the reset has taken place. If you are not able to push in the reset button and hear the click, this could be an indication that the reset button itself is defective and in order to resolve such a problem, it may need to be replaced.

How to Perform AO Smith Water Heater Thermostat Reset

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The thermostat in your AO Smith water heater essentially works as the brains behind the heating of the water within your unit. When the water within the tank reaches a temperature that is too low, the thermostat will read this and trigger the heating elements to get to work and start heating the water needed. If you suspect there are issues with the thermostat on your AO Smith water heater, how can this be done?

To perform a reset of the thermostat on your AO Smith water heater, you will need to complete a system reset for the water heater. To do this, remove the electrical panel from the unit, take away any insulation, press the red reset button until it clicks, and once clicked, the reset will complete.

Although you cannot individually reset the thermostat on your AO Smith water heater, if you suspect that this piece is the cause of any problems you are experiencing, you can test that the piece is working correctly by testing for continuity. To do this, with a multimeter, test the thermostat for continuity and if continuity is not present, you will need to replace the thermostat rather than simply reset the water heater.

How to Perform AO Smith Water Heater Gas Valve Reset

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There are a few different types of water heaters that users can select to fit their exact needs, but if you are using a gas water heater, gas will obviously be the fuel by which the unit is operated and thus, there will be a gas valve that controls the amount of gas administered to light the pilot or the ignitor. If you have an AO Smith water heater and are looking to reset the gas valve, read below to see what this process looks like.

To perform an AO Smith water heater gas valve reset, turn the power the water heater off and back on. Within 10 seconds, press both the temperature up and down buttons until you see that the vacation LED lights are blinking, release the buttons, then press them until the LED lights are steady.

Once the lights are steady and are no longer blinking, this is an indication that the valve is reset and if it is stuck in lockout mode, you should be able to have access to the valve again. When it comes to resetting this valve though, you can also complete a general reset on the water heater by simply pressing and holding down the reset button on the device until you hear the button click, indicating the reset has completed.

(Video) HOW TO RESET ELECTRIC WATER HEATER

How to Perform AO Smith Water Heater Flammable Vapor Sensor Reset

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The flammable vapor sensor is actually a passive device on your AO Smith water heater, but it works in a very important way when called to the task. The flammable vapor sensor on a water heater works to detect any flammable vapors within one minute of them being released, thus triggering the gas to stop flowing and preventing any fires or explosions from occurring. If you want to reset the flammable vapor sensor on your water heater, how can it be done?

To perform an AO Smith water heater flammable vapor sensor reset, find the FV sensor that is located inside the electric box on the device and turn the power off to the hot water tank. Once off, you will then remove the sensor and disconnect the sensor directly from the water heater.

Once you have the vapor sensor removed after disconnecting both spade connectors, you will then need to place the flammable vapor sensor in a well ventilated area for at least four hours to allow the device to reset. Once this time has passed or you see that the sensor has reset, you can then reconnect it to the water heater, turn the unit back on, allow it time to reheat after lighting the pilot or giving the heating elements time to do so, and check for proper function.

How to Reset AO Smith Gas Tankless Water Heater

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Whether you don’t have the space for a traditional water heater or you are looking to have a unit that is more efficient at keeping your water hot no matter how much you use, you may find yourself in ownership of an AO Smith tankless water heater. By heating the water as it flows through the pipe, shortages of hot water come few and far between. However, if you are experiencing some issues with your tankless water heater, how can it be reset?

To reset an AO Smith gas tankless water heater, you will need to turn the hot water tap off and wait for five minutes. Once this time has passed you can then turn the water heater back on. When completely rebooted, run the hot water faucet from any area and see if hot water is present.

How to Reset AO Smith Electric Tankless Water Heater

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The electric tankless water heater that is produced by AO Smith is a bit different than that of the gas model, as this unit is powered by simply plugging it into a working electrical outlet. Even with the convenience and quick access to hot water this unit can afford, you might find there are times when a reset is needed to restore some functions back to a good working order. To see how to reset an AO Smith electric tankless water heater, continue reading below.

Copyright protected content owner: Readytodiy.com and was 1st posted on 2022-04-04. .

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To reset an AO Smith electric tankless water heater, you will follow the same steps as previously mentioned for the gas water heater. Turn off the hot water tap, wait five minutes, restore power back to the heater and once rebooted, run the hot water from a facet within the area.

How to Reset AO Smith Gas Water Heater (Non-Tankless)

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If you aren’t particularly keen on tankless water heaters and prefer to stick with a water heater that still has a tank to heat what is within, then you know that the tank looks much different than that of a tankless water heater. Although a standard water heater with a tank is more familiar to most, if you are looking to reset the unit but aren’t quite sure how, continue reading below to see how this can be done.

To reset an AO Smith gas water heater that is non-tankless, remove the electrical panel that is located on the outside of the water heater and take away any insulation that’s placed behind it. When the insulation is removed, press the red reset button until you hear a click, and the unit will reset.

How to Reset AO Smith Electric Water Heater (Non-Tankless)

How to Reset AO Smith Water Heater - Ready To DIY (9)

Just as there are gas water heaters and gas tankless water heaters, so there are tankless electric water heaters as well as standard electric water heaters that heat the water through the use of a tank. If you have an AO Smith electric water heater, the device is powered by the fuel source of electricity, making this a great unit for those who never want to worry about a pilot light going out. Though, to reset an AO Smith electric water heater, what can be done?

To reset an AO Smith electric water heater that hosts a tank for heating water, remove the electric panel from the front of the unit as well as any insulation. When the insulation is removed, press the red reset button and hold it until you hear a click, which indicates the reset has taken place.

Copywrite article owner is Readytodiy.com for this article. This post was first published on 2022-04-04..

To reset an AO Smith water heater, the most standard method is by pressing the reset button located on the until. Whether you own a gas or electric heater, the electrical box can be pulled open as well as any insulation, then press the red reset button until a click is heard, indicating the reset.

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ReadyToDiy is the owner of this article. This post was published on 2022-04-04..

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FAQs

How do I reset my AO Smith water heater? ›

We're going to go ahead and unscrew the top panel on the water heater. And then pull back the white

How do I reset my water heater control panel? ›

Somewhere on your electric water heater, you'll find a reset button. It's usually red and often located near the thermostat. It may also be hidden behind a removable metal panel on the unit—and then behind some insulation. Once you find the button, push and release it.

How long do you hold the reset button on a hot water heater? ›

It depends on the size of the tank, but with any unit, you should be able to get in a hot shower with gas water heaters within 30-40 minutes and with electric tanks, about 60-90 minutes.

How do I reset my hot water heater? ›

Start the procedure over at an arm's length turned the control knob slowly from pilot to on turn the

Why is my AO Smith water heater not heating? ›

If the gas valve does not open, the burner will not light, and the water heater will not heat. First, ensure that the ignition source is working properly. Second, ensure that the gas valve has pressure. If the ignition source is working, and the gas valve has pressure, consider replacing the gas valve and thermostat.

What causes a water heater to need to be reset? ›

When your thermostat stops working correctly, it can fail to regulate the temperature in your electric water heater properly. This, in turn, will cause your water to heat up to dangerous levels, which will cause the reset switch to trip.

What happens if I push the reset button on my water heater? ›

If your water heater loses power, your water heater's reset button can be used to turn the appliance back on. However, your reset button serves as a safety device and turns the unit off when the water temperature gets too hot.

Do all hot water heaters have a reset button? ›

Yes, all water heaters should have a reset button. They can also be known as the “emergency limit switch”, “emergency cut off (ECO)”, “high-limit safety thermostat switch”, or “electric water heater reset button”.

What happens when you hit the reset button on a hot water heater? ›

Your water heater reset button is a safety device that shuts off power to your water heater when the water temperature inside it exceeds 180 degrees Fahrenheit. Side note: the reset button is also sometimes referred to as the ECO (emergency cut off) switch or “high limit safety thermostat switch”.

Why do I have to keep pressing the reset button on my hot water heater? ›

In some cases, the water heater reset button will repeatedly trip. This is a warning sign of a larger issue such as a faulty thermostat, loose wiring, corroded parts, a grounding problem, or a malfunctioning high limit switch.

How do I know if my water heater reset? ›

The first thing you should check is the water heater's reset switch, which is usually a red button on the upper thermostat of an electric water heater (you will need to remove the small panel to access it). If the button is lit up, it means the switch tripped and needs to be reset.

Where is the reset button located on a water heater? ›

Many water heaters have a second cover plate near the top, underneath this plate is usually where you will find the reset button.

Can a water heater reset itself? ›

#1 Check for a Loose Electrical Connection

Unfortunately, it happens all the time, and it could be the cause of your water heater resetting itself constantly. The reason that loose wiring causes your water heater to reset itself is because excess heat is automatically produced when electrical wires are loose.

Why is my hot water not getting hot just warm? ›

A broken internal heating element

If the water is constantly lukewarm, it usually indicates a problem with the upper heating element. A short-lived supply of fully hot water points to a problem with the lower heating element.

Why is hot water working but not heating? ›

If you've got hot water, but no central heating then there are more issues it could be if it's not the thermostat or the boiler pressure. Common reasons for this particular fault are broken diaphragms and airlocks, or a motorised valve failing.

What Does flashing light mean on AO Smith water heater? ›

Electronic control display on your AO Smith water heater is a very neat feature. The "heating" and "open" flashing light indicates that the problem might be the ignition or flame failure, the GAHH-50 model reached the maximum number of retries so it is in locked out position, which is by default for one hour.

What is the most common problem with water heaters? ›

Water leaks are perhaps the most common type of water heater issue you'll face. Any water heater will start to leak eventually, as by nature water will eventually corrode your tank and create microscopic cracks or fractures.

How do I know if my water heater thermostat is bad? ›

How Do I Check My Water Heater Thermostat?
  1. No hot water – This most likely indicates a problem with the upper thermostat.
  2. Not enough hot water – This most likely indicates a problem with the upper thermostat.
  3. Slow hot water recovery – This is another problem that can occur when the lower thermostat is malfunctioning.
10 Feb 2021

Where is the reset button located on a water heater? ›

How To Reset The Reset Button On a Electric Hot Water Heater Pretty Easy

Why is my water heater not working all of a sudden? ›

No Power or Gas

If an electric water heater is not producing hot water, it could be a simple problem like a blown fuse or tripped circuit breaker. Additionally, some electric water heaters have a circuit-style safety switch located near or on the thermostat.

What Does flashing light mean on AO Smith water heater? ›

Electronic control display on your AO Smith water heater is a very neat feature. The "heating" and "open" flashing light indicates that the problem might be the ignition or flame failure, the GAHH-50 model reached the maximum number of retries so it is in locked out position, which is by default for one hour.

How do I adjust the thermostat on my AO Smith water heater? ›

The thermostat's control is a small screw set into a covered housing, and you'll need a flathead screwdriver to turn it. Temperature adjustment is simple and intuitive; you'll turn clockwise to increase the temperature and counterclockwise to lower the temperature.

Should I hit the reset button on my water heater? ›

If your water heater loses power, your water heater's reset button can be used to turn the appliance back on. However, your reset button serves as a safety device and turns the unit off when the water temperature gets too hot.

What happens if I push the reset button on my water heater? ›

The purpose of this button is to stop the flow of power from the water heater. This is a safety feature and happens when there is an issue in the water heater such as a thermostat not working properly or a power surge. The reset button keeps the water from getting too hot in the unit.

Does every hot water heater have a reset button? ›

Yes, all water heaters should have a reset button. They can also be known as the “emergency limit switch”, “emergency cut off (ECO)”, “high-limit safety thermostat switch”, or “electric water heater reset button”.

What is usually the most common water heater problem? ›

Water leaks are perhaps the most common type of water heater issue you'll face. Any water heater will start to leak eventually, as by nature water will eventually corrode your tank and create microscopic cracks or fractures. However, this isn't always a sign that your tank is what's leaking.

What does blinking green light mean on water heater? ›

If your water heater flashes green 5 times every 3 seconds, you might have a problem with a sensor. Call a technician to replace a gas control valve. Gas control valve failure. If the LED light blinks 7 times every 3 seconds, you have a problem with a gas valve.

Why is my water heater flashing green light? ›

Your flashing green light on the water heater means the unit is calling for hot water. The fact that the boiler will fire with the thermostat means the boiler is fine.

Why is my water light flashing? ›

What to do about the flashing water temperature light? If your car's water temperature light starts flashing it means the engine is overheating. Some car models have a flashing water temperature light while others have a steady light. Other models add a sound indicator to further attract the driver's attention.

How do I recalibrate my thermostat? ›

Using a right-sized screwdriver, turn the screw back and forth slowly until the contacts open. Wait a few seconds and turn the calibration screw until the contacts close again. This simply resets the contacts, making sure that there wasn't a bad connection between them, causing your thermostat to become uncalibrated.

How do you calibrate a water heater thermostat? ›

How to Adjust Water Heater Temperature - YouTube

What should my hot water tank thermostat be set at? ›

The Occupational Safety & Health Administration (OSHA) recommends water heaters be set to at least 140 degrees Fahrenheit (60 degrees Celsius) to minimize the growth of Legionella and other microorganisms.

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