How To Reset Ao Smith Water Heater

A. O. Smith Water Heaters at Lowes

Back If you are experiencing some hot water, or if the water is just not hot enough, or if you are experiencing any other difficulty, refer to the Troubleshooting section. The following instructions are for a new water heater installation in which there is NO HOT WATER AT ALL. Having no hot water after installing a new water heater is most likely due to one of two factors: (1) there is no electric power or (2) the higher heating element was burned out during the installation process (dry fire).

Read and observe any warning labels on the water heater, as well as the safety recommendations in the printed owner’s handbook, to limit the danger of property damage, serious injury, or death.

Step1:Tools and Supplies

  • Toolkit includes: dishwashing soap by the hand, element wrench, hose and bucket (optional), multimeter, and non-contact circuit tester. Paper towels or rags from the store
  • 1/4″ nut driver and/or screwdriver
  • New upper element
  • 1/4″ nut driver and/or screwdriver

Step2:Turn Power OFF

  • To switch off the water heater, locate the circuit breaker and turn it off (or remove the fuses from the circuit). WARNING: Before working on the water heater, check sure that the power has been turned off with a non-contact circuit tester or volt meter. If you work on an electrified equipment, you risk getting electrical burns, electrocution, or death.

Step3:Open Electrical Junction Box Cover

  • Disconnect the old water heater’s electrical junction box and remove the access panel. Your access panel may have a different appearance and may utilize a different type of screw than the one shown.

Step4:Check for Electrical Power

  • Check the power lines using a non-contact circuit tester to ensure that the power has been turned off completely. WARNING! Working on an electrified circuit has the potential to cause serious damage or death due to electrical shock. Check the cables with a volt meter or circuit tester to ensure that the power has been turned off

Step5:Replace the Junction Box Cover

  • Verify that the power is turned off by using a non-contact circuit tester to check the power wires WARNING! The use of an electrified circuit can result in serious damage or death as a result of an electric shock. Use a voltmeter or circuit tester to check that the power has been turned off at the source.

Step6:Remove Upper Heating Element Cover

  • Organize and tuck away the insulation (tuck it beneath the water heater’s jacket). Caution: Working on an electrified circuit might result in serious damage or death as a consequence of electrical shock. Check the cables with a volt meter or circuit tester to ensure that the power has been turned off

Step8:Remove Plastic Protector

  • Turn on the power
  • WARNING: Working near an electrified circuit might result in serious damage or death due to electrical shock
  • Turn on the power.

Step10:Set the Multimeter to AC Volts

  • Turn on the power
  • WARNING: Working near an electrified circuit might result in serious damage or death due to electrical shock
  • Turn on the power.

Step11:Check Voltage

When working near an active circuit, there is a risk of severe damage or death from electrical shock.

  • Working near an electrified circuit might result in serious injury or death due to electrical shock. Check the voltage at the top two screws of the higher thermostat
  • If it is low, replace the upper thermostat. Make a note of your measurement and compare it to the voltage given on the data plate Select the appropriate option from the options listed below. A issue with the home’s electrical wiring is likely to be the cause of a voltage that does not match the criteria shown on the water heater’s data plate (which is typically 240 volts AC). Make contact with an electrician or other knowledgeable individual.

How to Reset Your Water Heater (5 Simple Steps)

Is it frustrating to be daydreaming about a nice shower after an exhausting day at work and discover that there is no hot water when you reach home? Something is definitely wrong if the water suddenly becomes ice cold or simply refuses to heat up at all. In such situations, knowing how to restart your water heater is critical to your safety. Unfortunately, it is not a tough task, and we will walk you through each stage of the process. A little bit about the reasons for performing a reset as well as some items to keep an eye on will also be discussed.

How to Reset a Water Heater

Resetting your water heater is a pretty simple procedure. However, there are several precautions you must take in order to be secure.

1.Disconnect the Unit

Water heater reset is a pretty simple procedure. In order to keep yourself secure, however, there are several precautions you must take.

2.Locate and Remove Cover Plate

This procedure will necessitate the use of a screwdriver. Determine if you require a Phillips or a flat head screwdriver by consulting your owner’s handbook. Next, take a check around your water heater to see if there is a detachable plate somewhere. It’s most likely going to be located in the front of the device and secured in place with at least two screws. Identify it and remove the screws after you’ve located it. Keep an eye on the plate, since it may fall to the floor or onto your foot. Lift the plate away from the wall once the screws have been removed.

3.Take out the Insulation

An insulating material should be installed beneath the cover plate as a precaution. It’s commonly a foam pad that’s placed over the buttons that need to be pressed to reset the machine. Remove this from the equation and set it aside for the time being. Keep an eye out for any signs of moisture. If you see any moisture around the reset button or on the pad, it is possible that there is a leak in the rubber gasket. This must be addressed prior to attempting to reset your water heater.

4.Click the Reset Button

The reset button is most likely a red button in the centre of the control board, which you may press to restart the computer. On some water heaters, the “reset button” is clearly labeled for ease of use. You can proceed to reset the device if the reset button is protruding, which indicates that it has been triggered. If it isn’t illuminated, it is most likely due to another problem. The majority of the time, it’s a malfunctioning control board. The button must be pressed firmly in order to be forced inward.

If, on the other hand, there is no clicking sound when you press the button, don’t be alarmed.

You should be able to find out from your owner’s handbook whether you should or should not wait for the click.

If your company has one, make use of it as well.

If the switch continues to trip (i.e., does not reset), contact a professional for assistance. The switch serves as a safety precaution. Its purpose is to shut down the unit in the event of an overheating situation or similar safety hazard (1).

5.Reassemble and Turn On

If the reset button is a red button in the centre of the control board, it is most likely to be found there. Some water heaters have a “reset button” that is easily accessible. You can proceed to reset the device if the reset button is protruding, which indicates that it has tripped. A problem with the lighting is likely to be the cause. A defective control board is almost always the blame. The button must be pressed firmly in order to be forced inward. Maintain your pressure until you hear a “click,” indicating that your reset was successful.

  • Because every water heater is different, it’s possible that yours doesn’t make them.
  • Occasionally, a second reset button for the thermostat will be found on a water heater.
  • You can usually find it next to the first button, but you should refer to your owner’s handbook to make sure.
  • Safety is provided by the switch.

Why Do I Need to Reset?

A circuit breaker and a reset button are incorporated to prevent a potentially dangerous scenario from arising. In many cases, the reset button will just trip without any apparent reason, and it is safe to press the button again. However, there are a few significant reasons why it could trip and refuse to switch back on again:

  • If the thermostat is malfunctioning, the device will be unable to produce hot water, resulting in the circuit being triggered. Electrical problems: Sometimes a loose or damaged wire stops power from reaching the heater
  • Other times the heater is malfunctioning. A malfunctioning high-limit switch: If this switch is not functioning properly, the water will continue to heat until the circuit is broken. A faulty breaker: It is possible that the water heater is just too much for the home to manage, resulting in the breaker malfunctioning
  • However, this is rare. An erroneous component: This might be difficult to detect since the thermostat will appear to be functioning normally. However, the water continues to heat over the temperature you have selected. As a result, there is a pause in the action.

Keep it Safe

The reset button is included for safety reasons, in order to prevent boiling water or damage to the machine. Fortunately, resetting is straightforward and can be completed in a matter of minutes. If, on the other hand, the button will not reset, contact a specialist because this might suggest a more serious problem. Knowing how to reset a water heater is crucial, and we hope that the information provided above was of use. Any more inquiries can be left in the comments section below if you have any further concerns.

How do I turn on my AO Smith gas water heater?

The reset button is included for safety reasons, in order to prevent boiling water or damage to the equipment. To their advantage, resetting is simple and may be completed in a matter of seconds. It is necessary to contact a specialist if the button will not reset and indicates the presence of a more serious issue. Knowing how to reset a water heater is critical, and we hope that the information provided above was of use. Any more queries can be left in the comments section below if you have any other inquiries.

  1. Disassembletheaccesspanelfromthesideofthe A.O.
  2. Turn the gas control knob on the side of the water heater to the “Off” position and leave the room for roughly 10 minutes to allow the area to air out. Make sure the gas control knob is in the “Pilot” position
  3. And

If your hot water heater isn’t heating up, it’s likely that the pilot light has gone out, which is a regular problem. This might be caused by the gasvalve, the gas supply, or—more likely—by the thermocouple positioned close to the pilot light, which is located near the pilot light. Who is the manufacturer of AO Smith hot water heaters? Smith acquires the parent company of AmericanWater Heater. The acquisition of GSW Inc., a Canadian producer of water heaters and construction goods with 2005 sales of $520 million, was finalized on April 3 by A.O.

Furthermore, what is it that causes the hot water heater’s reset button to be pressed?

The reset button is sometimes referred to as the “ECO” (emergency cut off) or the “high limit switch” in some circles.

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Remove the thermocouple from the pilot assembly and lightly wipe the tip with steel wool or emery cloth to remove any soot or buildup that may have accumulated as a result of an incorrect pilot flame setting.

Clean the threads of the nut that connects the Thermocouple to the control valve using an eraser from a pencil and then re-tighten it with the eraser.

A.O Smith Water Heater Reset Button (Ultimate Guide)

The A.O. Smith brand of gas and electric water heaters is fairly popular in the United States of America. They compete with Rinnai and Rheem, which are both well-known brands in their respective markets. The reliability of the brand is one of the aspects that influence the decision of many house owners to purchase it. When taking a hot shower or using your washing machine, you may find yourself in a scenario where there is no hot water accessible. If you are having difficulty with your hot water tank, one possible solution is to try to reset it.

Smith water heater is not immediately noticeable.

The position of the button may also be determined by the type of hot water tank you have, such as a gas, electric, or tankless model, among other factors.

Where is the A.O Smith Water Heater Reset Button Located?

A.O. Smith Water Heater Manual is credited with this image. It is recommended that you start by turning off the electricity to your A.O Smith water heater before proceeding with the troubleshooting method. You will also need to turn off the gas line valve if you are using a gas water heater. The A.O. Smith water heater reset button may be located behind the metal cover, near to the centre of the unit, on either the gas or electric versions of the device. As soon as you open the top cover, you’ll notice that the button is buried under a protective layer of insulation or Styrofoam.

This is a related article:The Ultimate Guide to Resetting Any Water Heater

How to Reset Your A.O Smith Water Heater

You can easily reset your A.O Smith hot water heater by following these four simple procedures.

  1. Make your way to your home’s electrical panel, which is usually placed in the garage or on one or more of the house’s outer walls. The “water heater” breaker should be located on the circuit breaker panel. Turn the switch to the “off” position. Make your way to the hot water tank. Remove the screws that hold the top panel cover on the side of the unit in place and then lift the cover off the unit. The reset button will be situated on the inside of the panel, near the bottom. It’s possible that some insulation has been placed over the reset button. Remove the insulation and save it
  2. Then press the reset button on the control panel. When the water heater is reset, you should hear a clicking sound, which indicates that it has been successfully reset. Obtain access to the electrical panel and turn on the breaker switch.

It will be necessary to re-ignite the pilot light on your gas water heater in order for it to become operational again.

Why is My A.O Smith Hot Water Heater Tripping the Reset Button?

It will be necessary to re-ignite the pilot light on your gas water heater in order for it to become operational once again.

Bad Heating Element

The heating element is in charge of boosting the temperature of the water in the tank to a comfortable level. if it is broken or has a short in it, it will continue to raise the temperature of the water. Because it is unable to interact with the thermostat, the reset button trips as a result of the malfunction. It is possible that a replacement heating element may be necessary to remedy this issue.

Faulty Thermostat

In the water heater, the thermostats are in charge of keeping an eye on the water temperature inside the tank. It works by sending signals to the heating element, which then either switches on to raise the temperature or shuts off to reduce it as needed to function. It is possible for the thermostat to malfunction and become unable to execute its job, resulting in the reset button being activated due to a lack of communication between it and the heating element.

Electrical Problems (Bad or loose Wiring and Circuit breakers)

Electrical problems are a typical reason for the reset button on an A.O Smith water heater to trip. Normally, I begin by inspecting the wiring and circuit breakers for signs of wear and tear. It is possible that a loose wire has tripped the reset button. When there is a problem with the wiring of your unit’s components, you will be able to tell right away. You could come across some charred fragments, or if you gingerly tug on a wire, it might completely separate from the component to which it is linked.

Opening your electrical panel may cause you to discover that it is hot to the touch and that you may smell burning when you first open it.

In the process of troubleshooting your unit’s reset button tripping, it is critical to look for and eliminate any electrical faults that may be causing it to trip the reset button.

Where is the A.O Smith Electric Water Heater Reset Button?

The reset button on A.O. Smith gas and electric tank heaters may be found on the side of the water heater, just below the top cover of the tank heater. Essentially, there will be a red button that will be hidden inside the panel by insulation.

How to Reset a Water Heater

Being without a functional hot water heater throughout the winter is quite painful. What should you do if your hot water heater is not functioning properly? Often, rebooting the system is all that is required to solve the problem. Depending on the type of water heater you have, you may choose from one of the following approaches to resolve your issue (gas, electric, or eventankless).

How to Reset an Electric Water Heater

The switch was tripped, which caused the problem, and it only requires a reset to correct it. If you do not know how to reset a water heater, it is a very simple procedure to learn. All that is required is a little know-how; no special skills are required. The reset button should be the first thing you search for!

Where Is the Water Heater Reset Button?

How well do you know the location of your water heater (attic, garage, basement)? Having identified the water heater, look for a reset button on the higher thermostat, which is normally placed on the back of the unit. If it isn’t visible, it is most likely located someplace in the lower portion of the water heater. Some devices have a button at each position, whereas others do not. If you want further assistance, watch this informativeHomeowner Repair video.

Reset Button on Water Heater Doesn’t Click

Know where your water heater is located (attic, garage, basement). Having identified the water heater, look for a reset button on the higher thermostat, which is normally placed on the top of the water heater. This is most likely located someplace in the lower portion of the water heater if it isn’t visible right away. The unit may include a button in each of the four corners. In case you want further guidance, watch this informativeHomeowner Repair video.

Other Causes of the Issue

A malfunctioning thermostat is the most prevalent source of this problem, but it is not the only one. It’s conceivable that your wiring is faulty or has been corrupted in some other manner. It’s also possible that you have a short in one or both of the heating components. Finally, but certainly not least, it’s possible that you’re experiencing electrical difficulties with your home as a whole, and that the problem isn’t limited to the water heater.

How to Reset a Gas Water Heater

Relight the water heater pilot, and on newer types, there is a thermal switch that may be used to reset the water heater.

How Long for Hot Water Heater to Heat After Reset?

It is necessary to wait for hot water once you have reset the system (unless you have an on-demand water heater), but how long should you wait? It varies depending on the size of the tank, but with any unit, you should be able to get into a hot shower in 30-40 minutes with gas water heaters and 60-90 minutes with electric water heaters, depending on the size of the tank.

How to Reset Tankless Water Heater

Thermal safety reset capabilities are also included in on-demand systems.

You can almost certainly count on having to remove the cover of your tankless water heater in order to have access to it if you need to reset it. Because each manufacturer will have their unique set of instructions, we recommend that you get out your owner’s manual to handle this issue.

Turn to the Plumbing Experts

Thank you for taking the time to visit us here at Please do not hesitate to contact us if you have any more questions regarding your project or related items. Remember, we carry only the most reputable brands in the industry, like Bradford White, Takagi, Stiebel Eltron, and others. Purchase water heater components and accessories at a discount from many sources. Resources that are related to this topic include: How to Light a Hot Water Heater (with Pictures) How to Turn Off a Water Heater (with Pictures) Instructions on How to Drain a Water Heater Using a Water Heater for the First Time How to Increase the Temperature of a Water Heater Is there a recommended temperature for the water heater?

Troubleshooting an A.O. Smith Energy Saver Gas Automatic Water Heater

Operating issues with your A.O. Smith energy saving gas automated water heater are possible, just as they are with any other piece of machinery. However, instead of rushing out to the hardware or home improvement store to purchase a fully new hot water heater, analyze the difficulties with your A.O. Smith hot water heater to find a do-it-yourself solution to your problem. Your water heater may be repairable without you having to spend your whole savings account balance on repairs.

Leaking or Smelly Water

  1. If you notice that your A.O. Smith water heater is leaking, it is possible that a threaded connection has come loose. Preventative maintenance includes thoroughly inspecting the connections for the cold water supply and incoming hot water connections, as well as the heater’s relief or drain valve and thermostat connections. If you discover that any of these connections are loose, carefully tighten the loose connection until it is snug and secure again. Make sure that none of your adjacent equipment, such as the washing machine, is the true cause of the water leak, since this might lead to more damage. Whenever the water heater emits aromas that appear out of place or unhygienic, it might be because the incoming water supply contains excessive sulfate or mineral content. If this is the case, A.O. Smith suggests that you drain and properly cleanse the whole tank before re-filling it.

Pilot Light Issues

  1. When the pilot light fails to illuminate the unit, it is possible that the main gas supply has been turned off. Check the gas line that supplies the appliance. If the gas valve is installed perpendicular to the gas line, it is quite probable that the feed will be shut off. Make sure the gas valve is aligned with the gas line by adjusting it. Additionally, a clogged pilot assembly may prevent your pilot burner from maintaining its flame. Refer to the owner’s handbook for instructions on how to clean the pilot assembly. When relighting the pilot, make sure to follow the instructions in the manual exactly as written. Any of these issues, as well as a thermocouple malfunction, a wire that has been detached from the spark ignitor, a fractured electrode, or melted insulation, would necessitate the intervention of a certified service agent.
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Water Temperature

  1. If the hot water coming out of a faucet or showerhead is too hot to be comfortable, it is possible that the thermostat has been programmed too high. Reduce the temperature of the hot water by turning the control knob on the heater. Check the user’s handbook to be sure you’re turning the knob in the correct way
  2. You don’t want to accidentally make your water even hotter by turning it in the wrong direction. Taking extra precautions when experimenting with the temperature setting can help to reduce the chance of scorching your skin. A.O. Smith water heaters may be undersized for the residence, resulting in an insufficient supply of readily accessible hot water even after altering the temperature setting. If the hot water feels tepid to the touch after adjusting the temperature setting, the water heater may be undersized. Unless you intend to replace the entire unit, you should adopt a more conservative approach to daily hot water consumption.

Sizzling or Rumbling Sounds

  1. The sediment accumulation inside the tank of an A.O. Smith hot water heater may be the cause of the sizzling or rumbling sounds heard from the unit. Using a hose, connect the drain valve to the outside of the house. While draining and flushing the tank, turn off the pilot light and the gas supply connection to the tank. To empty and flush the tank, turn on the drain valve but turn off the hot water valve that supplies the home until you have finished draining and flushing the tank. Allow the clean, cold water to flush through the tank until the water at the end of the hose is clear and free of obstructions. Close the drain valve and remove the hose from the tank in order to fill it up. Replenish the gas supply and relight the pilot light.

How to Reset an Electric Water Heater in Two Easy Steps

Take a look at this. It’s a chilly Monday morning in the Arctic. If your husband hadn’t threatened to suffocate you in your sleep, you would have pushed the snooze button at least a seventh time before you finally got out of bed in the morning. Instead, you sigh heavily, pull the covers back over your head, and go to the restroom. You turn on the shower, wait for the beautiful steam to rise up over the curtain, and then step into the shower with your feet up. But, two milliseconds after you finish soaping up, your pleasant hot shower turns into sleet on the ground.

The hot water is gone bleepity-bleep-bleep, and I have no idea what occurred.

But what about that one?

I’m talking about the one when you’re fumbling around for a towel in an attempt to keep your teeth from chattering?

Why Electric Water Heaters Quit

So, what exactly is the source of Hot-Showerus Interruptus? Alternatively, if you have an electric water heater, it is likely that the unit’s reset button has been activated. Those buttons have a tendency to trip at unpredictable intervals. However, it frequently occurs as a result of the following:

  • The thermostat in the device is not working properly
  • Even the reset button itself isn’t working properly
  • The high-limit switch, which is a component of the unit that prevents water from becoming excessively hot, is no longer operational. There is a short in the heating element. There’s a snag in the wiring someplace

Recall that the reset button on a water heater has a vital function: it interrupts power in the case of a malfunction, such as a power surge or a malfunctioning thermostat, to prevent further damage. If your water heater loses power on a regular basis, it is probable that there is an issue that needs to be repaired by a competent Culpeper County plumbing contractor. Please keep in mind that the combination of electricity and water may be extremely harmful, if not lethal. Never be afraid to bring in a professional to double-check your work.

For the purposes of this piece, we’ll assume that your water heater is normally conscientious and that this isn’t a recurrent problem. Assuming you have this understanding, let’s follow through two easy steps to get it back up and running.

First, check your electrical panel.

Locate the circuit labeled “water heater” on your electrical panel (which is normally located in the garage, basement, or storage closet), and turn it on.

  • If the breaker is currently in the OFF position, flip it to the ON position. If it remains in place, you may generally conclude that everything that has happened has been an accident and that you can go about your business as usual. However, if the switch returns to the OFF position, either immediately or shortly thereafter, contact an electrician. If the breaker is currently in the ON position, flip it to the OFF position.

Then, push the water heater reset button(s).

You’ll locate a reset button on the back of your electric water heater somewhere. It is often crimson in color and is generally seen around the thermostat. It might alternatively be concealed behind a detachable metal plate on the device, which would then be concealed behind some insulation. Once you’ve located the button, press and hold it for a few seconds. While you have the access panel off, check to see if there is a second thermostat and a second reset button hidden within. A professional should be called if the button trips shortly after you press it, indicating that something is not operating properly.

  • If the electricity to your water heater has been restored, you’re good to go. (Congratulations on your accomplishment!) Just keep in mind that it will take a few hours for the water in the tank to reheat. If your water heater is still not working, turn off the circuit breaker and contact us so that we can figure out what’s wrong and get the hot water flowing again. If your water heater begins to operate but the reset button trips again, turn the breaker back to the OFF position and call us for further assistance. As previously said, your reset button is a safety precaution, therefore if it continually tripping, there is something wrong with your computer.

Is Your Water Heater Trying to Tell You Something?

Taking a cold shower becomes (kind of) amusing all of a sudden. However, when it occurs again, it becomes a source of aggravation. We’d be delighted to come over and see what’s going on, so please contact us right away. You’ve earned some wonderful, hot baths!

AO Smith Hybrid Water Heater Troubleshooting [7 Easy Fix]

The most typical AO Smith water heater problems are a lack of hot water, excessive running expenses, leaky water, too much hot water, a compressor that stops working, and a variety of other issues. To resolve any difficulties with your AO Smith Hybrid water heater, you will require a comprehensive troubleshooting guide. This essay is intended to assist you in finding solutions to all of your difficulties. Read it carefully in order to identify and resolve your hybrid water heater problems as fast as possible.

AO Smith Hybrid Water Heater Troubleshooting

There are several difficulties and solutions that you may experience when using the AO Smith Hybrid water heater, which are detailed in this page. Let’s have a look at the concerns and responses listed below:

1. No Hot Water

When utilizing the AO Smith Hybrid water heater, the most typical problem that you may have is a lack of hot water supply. The following are the most likely reasons of this problem:

  • There is no electricity to the water heater. a high temperature
  • The electrical unit is in the vacation mode
  • A high body temperature prevents normal functioning. The capacity of the water heater surpasses that of the hot eater pattern.


When your heater does not provide hot water, it is no longer useful to you. If your hybrid heater stops supplying hot water, you should attempt to resolve the issue as follows:

  • Check the tripped breaker or blown fuse once power has been restored to the unit. Restore the specified operating mode to its default setting. Reset the high-temperature restriction on your heater’s thermostat. Different heating modes can be modified. Make touch with a knowledgeable individual if you need water heater servicing.

Note: You may also learn how to remedy the most frequent problems that occur with the Vaughn Water heater by reading this article.

2. High Operating Costs

Operating costs are a critical consideration that cannot be overlooked. The operating costs of an AO Smith Hybrid water heater might be excessive at times for a variety of reasons, including the following:

  • Air filter that is clogged
  • Piping or faucet that is dripping or leaking hot water
  • The accumulation of sediment in the water tank
  • The point at which the temperature is too high
  • The electric mode has been selected.


You may avoid the high running costs associated with your heater by following a few simple procedures and addressing a few concerns. The following steps will help you to resolve the problem of higher functioning costs associated with your water heater:

  • Changing the setpoint temperature or the User Interface Module is recommended. Ensure that the air filter is clean and free of debris
  • Reduce the energy consumption of heaters. Insulate the faucet that is exposed
  • Reduce the amount of silt that accumulates
  • It takes care of the hot water leaks.

3. Dripping Water

If you are experiencing leaking water from the exterior of your AO Smith Hybrid water heaters, you should get professional assistance for the reasons listed below. The factors are as follows:

  • The water connection has a loose joint. The heater’s condensate drain is clogged with debris. Drain plumbing that is not acceptable


water connection joints that are not properly secured The heater’s condensate drain is clogged. Drain pipework that is not suitable;

  • Inspect the water heater connections and tighten any loose joints that are found
  • Gasket replacement or re-sealing is required. Cleaning and maintaining the unit on a regular basis

4. Too Hot Water

There are a variety of reasons that contribute to the excessively hot water produced by the AO Smith Hybrid water heater. The following are some of the other factors contributing to this problem:

  • The thermostat was set too high
  • The heating components were too short. Thermostat not working properly
  • Electrical control not working properly


The purpose of utilizing a water heater is to provide hot water; however, too hot water is not beneficial. To ensure that your hybrid water heater does not produce too hot water, perform these steps:

  • Make the necessary adjustments to the thermostat setting. Engage the services of an expert to repair the electrical control system that is malfunctioning. Thermostatic valves should be installed at each individual faucet.
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5. Compressor Stop Operating

You should examine the following reasons if your AO Smith Hybrid heater’s compressor suddenly stops working. The following are the elements that have contributed to this problem:

  • Damaged run capacitor
  • Indefinite resistance
  • Broken compressor
  • Refrigerant leak in the compressor


You should inspect and service your compressor on a regular basis before ceasing operation of the machine. The following are possible solutions to this problem:

  • Replacement of a broken compressor
  • Inspection and repair of a refrigerant leak
  • Check, repair, or replace the run capacitor if it is damaged. It is necessary to replace the resistance measurement element.

6. Insufficient/Slow Hot Water

It is possible that your AO Smith Hybrid water heater will begin to produce water slowly or insufficiently for the following reasons:

  • The temperature setting point is set too low
  • The hot water consumption pattern exceeds the present mode
  • A water connection to your dwelling unit that is in reverse
  • Heat has been lost
  • Leak of hot water
  • Heating components that are not working


In the event that your hot water supply is insufficient, the following are possible solutions:

  • In order to reduce the temperature setpoint, change the usage patterns to a different mode. Cover any exposed pipes with insulation. Engage the services of a qualified specialist to resolve the heating elements problem. Identifies and fixes hot water leaks.

7. Temperature Drip

A large reduction in temperature setting in your AO Smith hybrid heater might result in a severe problem. The following are some of the other factors that may be contributing to this issue:

  • Temperature valve that is not working properly
  • Excessive hot water pressure
  • There are problems with the thermal expansion tank.


In order to solve the challenges listed above, you should perform the following:

  • Check and replace the temperature valve if it is not working properly. Check the water supply’s input pressure to ensure that it is adequate. Install a pressure-reducing valve to lower the water pressure.


This hybrid water heater typically has an eight to twelve-year lifespan, depending on usage. In contrast to the typical lifespan of water heaters, with adequate regular maintenance, the water heater may give service for an extended period of time.

How much Electricity Does an AO Smith Hybrid Water Heater Use?

AO Smith hybrid water heaters require a regular heating element that consumes 4,500 watts of electricity to function properly. Meanwhile, just 550 watts are required for the heat pump to function. As a result, if the usual shower uses 16 gallons of hot water, the heat pump would need to reheat the water for 2 hours. It necessitates the usage of 1.2 kilowatt-hours of power.

Does the Installation of AO Smith Hybrid Water Heater Costs More?

By installing a hybrid water heater, you may save anywhere from $200 to $600 per year on your water heating costs. The installation cost of the AO Smith Hybrid water heater, on the other hand, is more than that of the tankless and electric water heaters. However, the amount of money saved as a result of this approach is excessive.

How Noisy the AO Smith Hybrid Water heaters?

Yes, the AO Smith Hybrid water heater is a little noisy, and it generates noise that is between 40 and 80 decibels in volume. This heater produces a lot of noise, similar to that of a typical home or a regular discussion from the lower end. Again, the noise might be similar to that of a vacuum cleaner, hairdryer, or other similar devices.

What is the Best Setting for AO Smith Hybrid Water Heater?

In fact, the AO Smith Hybrid water heater is rather noisy, producing sounds that range between 40 and 80 dB. There is a lot of noise coming from the bottom of the heater, similar to that of a typical home or a daily discussion. A vacuum cleaner, hairdryer, and other similar devices can make noise.


Do you have a better understanding of the issues for which you want the AO Smith Hybrid Water Heater Troubleshooting guide? If the answer is yes, then we have achieved our goal.

If you discover any other difficulties with your water heater, other than those listed above, please contact us immediately so that we can investigate. Comment on your issue in the comment box, and we will do our best to figure out a solution for you.

Resetting The Heater Control; Tco Resettable Lockout; Lockouts; Soft Lockout – A.O. Smith RESIDENTIAL GAS WATER HEATERS Installation And Operating Manual [Page 54]

The problem is that the blower is running continuously, the surface is hot, and the flames are not glowing after the warm-up period. The problem is that the vent pipe is too hot.


Soft lockouts, as indicated by system fault codes, need the resetting of the gas control system. Sliding the “ON/OFF” switch to the “OFF” position will bring the control back to life. Remove the switch from the “ON” position and wait 10 seconds before repositioning it. If the condition that caused the control to lock out is not rectified, the control will stay locked out or will revert to its previous state of lockout.


It is necessary to reset the gas control if a soft lockout is detected as indicated by system error codes. Sliding the “ON/OFF” switch to the “OFF” position will restart the control. Restore the switch to its “ON” position after a 10-second waiting period. Because of the failure to remedy the problem that caused the control to be locked out, the control will either remain locked out or will be locked out again.


This condition occurs when a system safety mechanism trips in order to interrupt the sequence of execution. System failures will be retried on a timed basis by the control system, but operation will not be resumed until the problem has been repaired.

Hard Lockout

When the primary controller fails and must be replaced, this condition occurs.

Where is the reset button on AO Smith gas water heater? – Firstlawcomic

This is the reset button, which is a red button placed on the water heater itself (just above the thermostat), which trips when the water temperature surpasses 180 degrees Fahrenheit. “ECO” (emergency cut off) and “high limit switch” are two terms that are occasionally used to describe the reset button.

Why my water won t get hot?

A water heater that does not generate hot water might be due to a lack of electricity, a tripped limit switch, or one or more faulty heating components, to name a few possibilities. As a first step, make sure that the circuit breaker for your water heater is not tripped on your panel of electrical circuit breakers. Switch off the circuit breaker and then turn it back on if it has been tripped.

Why is my gas hot water heater not working?

The other, less typical issue would be with the gas shutoff valve. A malfunctioning gas valve will prevent any gas from reaching the burner or pilot light. If the pilot light illuminates and then goes out, the problem is not with the gas valve. To learn more about the difficulties that might arise with hot water heater gas valves, see the article on “Fixing Hot Water Heater Gas Valves.”

What to do when your gas water heater goes out?

In most cases, a decent teflon tape sealer will do the task. Follow the manufacturer’s recommendations for lighting the pilot. The gas water heater should be completely operational. Why does the pilot light come on, but when I turn on the heater, it goes out? What is wrong with me? Most likely, the problem is caused by a defective thermocouple, which will need to be replaced.

What to do if your hot water heater is leaking?

If this is the case, lower the water flow. Check to see whether the gas supply is being obstructed in any way. Gas water heaters require a constant supply of gas to operate at peak efficiency.

If the gas line is obstructed, the obstruction must be removed. If there is even the slightest gas leakage, the gas line should be replaced immediately. Check to see that the hot and cold water pipes do not come into contact at any point.

Is it safe to repair a gas hot water heater?

It’s important to remember that, given the possibilities outlined above, you may encounter some considerable resistance when attempting to find someone to repair your hot water heater. Keep in mind that there is a possible hazard associated with the gas. Natural gas and propane gas have the potential to explode. Never undertake a repair unless you have switched off the gas and are well-versed in safe operating procedures and procedures.

How do you troubleshoot a gas hot water heater?

Ensure that the gas is turned on before re-igniting the pilot flame with a BBQ lighter at the base of the water heater to conduct troubleshooting. As a first step in troubleshooting an electric heater, check sure that the heater is receiving energy before resetting it by pressing down on the red reset button on the thermostat’s top.

Why is my hot water heater not heating?

It is possible that the upper heating element or the upper thermostat is malfunctioning, resulting in a lack of heat being produced in either the water at the top of the tank or the water in the top of the water heater. When this occurs, the electricity to the lower thermostat or heating element will never be switched on again.

How do you turn on a hot water heater?

Whenever the upper heating element or the upper thermostat fails, the water in the top of the tank will never reach the temperature specified on the upper thermostat, and the water at the top of the water heater will never become hot. When this occurs, the electricity to the lower thermostat or heating element will never be turned on again.

r/Plumbing – AO Smith Electric water heater (ECO) keeps resetting

Dear Sir or Madam, This is my first time buying a house. Several weeks after I installed my new AO Smith electric water heater, I discovered that I needed to check on the Energy Cut Off (ECO) and reset it because there was no hot water available at all. I’ve noticed that hot water returns after I’ve reset the ECO (*it clicks every time; according to the user handbook, it means the ECO was triggered when I hear a click after the ECO is reset), but this can’t be normal, can it? After checking the higher thermostat for a couple of days, I discovered a few burn scars on the insulation, which I believe were caused by a malfunctioning thermostat.

I have absolutely no idea what is going on.

The upper and lower thermostats are both set to 120 degrees Fahrenheit.

When the heater produces hot water, the water pips linked to the tank become hot to the touch.

Thank you very much!:) Here’s a shot of the finished product!

I’m attempting to figure this out in case I end up having to fix it myself later.:)

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