How To Replace Thermocouple On Water Heater

How to Replace a Water Heater Thermocouple

Time Approximately one hour or less Complexity Cost for a beginner is less than $20.

Introduction

Time It will take no more than an hour. Complexity Less than $20 for a beginner

Tools Required

Remove the burner assembly and the thermocouple from the assembly. Wear and tear on the thermocouple is the most common reason for pilot lights that won’t remain lit for long periods of time. It’s simple to change, and a new one will cost you between $5 and $10. The entire burner and thermocouple assembly may be removed rather than attempting to unfasten the thermocouple from within the water heater’s burning chamber, which is less time-consuming. Then remove the thermocouple from the burner and bring it with you to a home center or hardware store so that you can make sure you get the correct replacement.

Disconnect the three bolts that connect the thermocouple and the two gas tubes to the valve and set them aside.

Repairing Your Own Hot Water Heater

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Vacuum

Cleaning the burner chamber, checking for water leaks, and removing dirt from the burner ports are all smart ideas at this time of year. Reattach the thermocouple and replace the burner component once it has been disconnected. Follow the manufacturer’s directions for lighting the pilot on the water heater. While the main burner is running, check for gas leaks by pouring soapy water to joints and searching for bubbles to indicate a leak. Instructions on How to Install a Hot Water Heater

Fix Your Water Heater with an Easy Thermocouple Replacement

A thermocouple, also known as a flame sensor, is a device that controls the flow of gas in gas water heaters. While the device is often known as athermocouple on older heaters with standing pilot lights, it is known as an aflame sensor on contemporary heaters with electronic ignition. The mechanism is essentially the same (or nearly the same) on both types of heaters. Both devices will be referred to as thethermocouple for the sake of this article. An external gas control valve is connected to a thermocouple as part of the pilot burner assembly, which is located on each side of the water heater.

It is made of a single piece of metal.

As a result, it is an extremely important safety component of your water heater system.

Thermocouple or Flame Sensor?

The method by which you replace the thermocouple will be determined by the type of ignition system installed in your water heater. The thermocouple is a component of the burner assembly in both forms of ignition, whether it is a standing pilot or electronic.

Standing pilots have only a pilot and thermocouple linked to the burner assembly, while a running pilot does not. The pilot and thermocouple are both used in conjunction with an electronic ignition system. An electronic igniter is also coupled to the burner assembly in an electronic ignition system.

Before You Begin

When servicing an electronic ignition water heater or a standing-pilot water heater, the first step is to disconnect the connections to the gas control valve and then reconnect them. Turn the gas control valve on the water heater to the “OFF” position to turn the water heater off. The shutdown valve for the gas supply pipe to the water heater should be closed.

Warning

It is better to leave any work on water heaters and other gas appliances to the pros. Never undertake this job unless you have considerable experience dealing with gas appliances and all of the abilities required to perform it safely and correctly. Home-Cost.com

Materials

  • Water heaters and other gas equipment should only be serviced by qualified technicians. Do not try this job unless you have significant experience dealing with gas appliances and possess all of the essential abilities to accomplish the operation safely and correctly. Home-Cost.com

How to Replace the Thermocouple on an Electronic Ignition Water Heater

  • The combustion chamber of water heaters that use electronic ignition is completely sealed and gasketed to prevent leakage. Removal of the burner assembly manifold cover is required to get access to the combustion chamber, which contains the burner supply tube, burner, electronic ignition, pilot and thermocouple. The burner assembly manifold cover must be removed to gain access to the combustion chamber. Removing the bolts that hold the burner assembly manifold cover plate in place is a good idea. Depending on the type and model of water heater you have, the panel may be secured with nuts, screws, or tamper-resistant fasteners such as 20 Torx-head screws, which are available in various sizes. Home-Cost.com

Remove the Burner Assembly

  • Take hold of the burner supply tube and gently press it down to release the connections to the manifold, pilot tube, and thermocouple. Remove the manifold/burner assembly from the burner combustion compartment by gently pulling it out. Take care not to do any harm to the interior components of the vehicle. If the burner does not move easily, look around the base to see if there are any more screws keeping it in place there. Home-Cost.com

Remove the Cover Plate Gasket

  • Take care not to damage the old gasket by removing it from around the manifold cover plate if it is still in excellent shape and you intend to reuse it. If this is the case, remove the gasket and arrange to purchase a new one. Clean the metal surfaces that are in contact with the water heater’s cover plate.

Remove the Thermocouple

Pulling and twisting the old thermocouple from its mounting bracket should be done slowly and firmly. If you apply hard pressure to it, it should come out easily. Make certain that the connection between the pilot and the thermocouple bracket does not get bent or deformed. Remove the old thermocouple entirely by drawing it through the rubber grommet seal on the inside of the burner assembly manifold cover or through the gap in the burner assembly manifold cover from inside to outside. If necessary, you can cut the old thermocouple to make it easier to remove.

Tip

  • Take the old thermocouple to a hardware, home improvement, or plumbing supply store and purchase a replacement that is identical in size and shape. If you are replacing the old gasket on the manifold cover plate, you need also purchase a new one.

Install a New Thermocouple

  • Insert the new thermocouple into the burner assembly manifold cover through the grommet or aperture on the exterior of the manifold cover. Completely seat or click the thermocouple into its mounting bracket until it is securely in place. The thermocouple tip should be positioned so that the pilot flame encircles the top 3/8 to 1/2 inch of the thermocouple tip. Home-Cost.com

Reinstall the Burner Unit

  1. If necessary, replace the gasket on the burner manifold lid or reinstall the original one if it is still in excellent shape. Place the burner in the combustion chamber and tighten the unit down to the right setting. Replace the cover assembly in its original location. Make sure that you do not overtighten the screws or fasteners. Finally, reattach the gas control valve (as shown in the illustration below).

How to Replace the Thermocouple on a Standing-Pilot Water Heater

  • Simply lift and remove the burner assembly from the bottom of the water heater once the pilot supply tube, burner supply tube, and thermocouple have been detached from the gas control valve (as described above).

Remove the Thermocouple

  • Pulling and twisting the old thermocouple away from the thermocouple bracket should be done slowly and firmly. If you apply hard pressure to it, it should come out easily. Take care not to bend or damage any of the components.

Install a New Thermocouple

  • Insert the replacement thermocouple into the bracket from which it was previously removed until it is fully seated or snaps into place (see illustration). The thermocouple tip should be positioned so that the pilot flame encircles the top 3/8 to 1/2 inch of the thermocouple tip.

Reinstall the Burner Unit

  1. Reinstall the burner in the combustion chamber and reinstall the unit in the right position. Reconnect the gas control valve (as seen in the illustration below)

How to Reconnect the Gas Control Valve

In order to ensure correct seating of the unit, the burner must be reinserted into the combustion chamber. The gas control valve should be reconnected (see instructions below).

Reattach the Gas Tubes

  • The gas control valve must be reconnected to the burner supply tube, pilot supply tube, and thermocouple once they have been disconnected. The thermocouple’s mounting nut should be no more than 1/4 turn tighter than it is when it is hand-tight. Ensure that the Piezo igniter is properly connected on electronic-ignition equipment.

Turn On the Gas

  • Turn off the gas supply by opening the shutdown valve on the pipe. Make sure that the gas control valve is in the “ON” position. When using a standing-pilot device, be sure to relight the pilot by following the manufacturer’s instructions before turning on the valve. Temperature of the water heater should be set to the required temperature.

Test the Water Heater

  1. The main supply tube and pilot supply tube at the gas control valve should be checked for gas leaks with a soap-and-water solution, if necessary. Check the fittings for bubbles, which indicate a leak, after washing them with soapy water. If a leak is discovered, tighten all gas connections and check them with soapy water until no leaks are detected
  2. If no leaks are identified, repeat the process.

How To Replace A Water Heater Thermocouple

Please keep in mind that this content may contain affiliate links. As a result, we may gain a small profit on purchases made via our links, at no additional cost to you. If the pilot light will not stay lit and you have gas flow, the thermocouple is most likely faulty and should be replaced or, at a bare minimum, cleaned. A universal thermocouple is a low-cost component that can be found at most major hardware stores. It is less difficult than you would imagine to replace a thermocouple.

How Does a Thermocouple Work?

There may be affiliate links in this content, so please be aware of that. As a result, we may gain a small compensation on purchases made via our links, at no additional cost to you. If the pilot light will not stay lit and you have gas flow, the thermocouple is most likely faulty and should be changed or cleaned. A universal thermocouple is a low-cost component that can be found at most major hardware stores. It’s less difficult than you would think to replace a thermocouple!

Before you Replace the Thermocouple

Before installing a new thermocouple, make sure there are no blockages in the supply line. Symptoms similar to those caused by a failing thermocouple might also be caused by an obstruction in the thermocouple or pilot tubes. If you blow through the tube and there is no air movement, the tube is most likely blocked with debris. To remove junk from a line, insert a piece of wire all the way through the tube and then use air pressure to clear out any dust or rubbish that has accumulated along the route.

Replacing the Thermocouple

You should turn off the gas line that leads to your water heater.

Most units will have an inline valve for the gas input, but if one is not accessible, you can switch off the main gas line by turning it off. To turn off the gas, turn the gas control valve to the OFF position.

Step 2

Turn off the gas line going to your water heater and turn off the water heater. Most units will have an inline valve for the gas supply, but if one is not accessible, you can cut off the main gas line. Switch off the gas supply by turning off the gas control valve.

Step 3

Some versions, particularly those with a push button pilot igniter, have a protective cover over the burner chamber that must be removed before the burner may be used. If there is a cover, remove that as well.

Step 4

The burner, which is equipped with a pilot light and thermocouple tubing, is placed loosely in the container. Depending on whether the burner component is difficult to remove, there may be clips that must be loosened before the burner will move. Remove the complete burner component from the water heater by sliding it out.

Step 5

Take the thermocouple out of the burner and set it aside. In the vast majority of situations, no special instruments are necessary. Connecting the thermocouple to the pilot tube is made possible via the use of clips that keep it in the proper place. It may be necessary to detach the clips to ensure that the thermocouple can be readily removed from the pilot assembly.

Step 6

Extinguish the flame by removing the thermocouple. It is not necessary to use any tools in most circumstances in order to do this. Connecting the thermocouple to the pilot tube is made possible by the use of clips that keep it in the proper place. It may be necessary to release the clamps to ensure that the thermocouple will slide out of the pilot assembly freely.

Step 7

Turn on the gas valve that leads to the water heater. To relight the pilot, follow the directions printed on the pilot and turn the temperature control valve to the appropriate temperature setting. Apply soapy water around the three fittings, keeping an eye out for bubbles that signal a possible gas leak. Please see the following video for instructions on how to replace your thermocouple.

Replacing a Thermocouple on a Hot Water Heater

They are seldom this pristine, but this is the general appearance of all of the gas hot water heaters I have seen thus far. The first thing that comes over me when a renter calls to report hot water problems is fear. There are two causes for this fear. First and foremost, renters become quite irritable very fast when there is no hot water, so getting the problem resolved as soon as possible is critical. Second, this might become prohibitively costly very rapidly. This time, we were able to swiftly detect the problem as being caused by the thermocouple and replace it in record time.

How do Thermocouples Work?

Thermocouples are remarkable pieces of technology that were first introduced in 1821. It is practically common on gas water heaters and hasn’t changed much in the previous 30 to 50 years, despite technological advances. It functions as a result of a clever little physical chemistry trick. When two metals are alloyed together, a small quantity of electricity can be conducted when the metals are heated to a high temperature. Because of the electrical current, an electromagnet is activated, allowing the gas to flow.

As soon as the pilot light goes out, the electricity ceases to flow and the magnet activates, cutting off the gas supply. It’s a pretty ingenious method to make sure we don’t accidentally blow ourselves up with something so innocuous.

How Do Thermocouples Stop Working?

As a result of being in the flame of the pilot light, thermocouples stop operating. The flame gradually oxidizes the metal, causing it to deteriorate. Due to the degradation of the thermocouple’s form and composition, the amount of energy generated decreases until it is no longer sufficient to activate the electromagnet, which is responsible for maintaining the open gas flow passage. In a nutshell, the pilot light will not remain illuminated. What ever you try, the damned thing continues to fail on you time and time again.

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How Do You Replace a Thermocouple on a Hot Water Heater?

Leaving science aside, the process of changing the thermocouple is rather straightforward.

  1. Make a mental note of the thermocouple at the gas valve, as well as the path it takes
  2. Remove the shields from the area around the water heater’s access door. It is possible that a screwdriver will be required. Turn off the water heater if it is not already off. Allow it to cool down if it was on when you started, perhaps for 10 minutes
  3. Remove the thermocouple from the gas valve body by loosening and removing it with an adjustable wrench. Turning it both ways will reveal which direction it has to be threaded because it is upside down and maybe threaded in reverse. This is something to keep in mind to prevent irritation when reconnecting the cable. Slowly pry the sensor end of the thermocouple out of the mounting position using channel locks or a vice grip to prevent it from slipping. Some squirming may be necessary, but a moderate, constant rearward pressure should be sufficient to gradually release it from the clip that is holding it in place. Replace the thermocouple’s mounting hardware with new hardware. These deteriorate at the same rate as the unit, so changing them is a smart idea. When I went to pick it up, it collapsed. The sensor end of the thermocouple should be inserted into the new mounting hardware. Make an attempt to position the end of the sensor in the same location as the last sensor was placed
  4. The lead should be rerouted to the gas valve body, and then attached to the valve body. Keep trying to spin it both sides until it catches the thread
  5. Patience is essential. Relight the pilot to check whether it will continue to operate. Pay attention to the position of the sensor tip
  6. The tip should be 12 inches into the flame of the pilot light. Allow it to sit for a time and check to see if the hot water heater is functioning correctly. If that’s the case, congratulations. You’ve just saved $500 by not replacing the device, or at the very least a $100 service call fee.

To be quite honest, I am not a professional in this specific repair. Although I found it simple to pull off, I didn’t bother checking in with YouTube University to be sure I was doing everything correctly. Taking a glance at the following videos, it appears that the majority of users advocate removing the entire burner assembly in order to replace the Thermocouple. On older models, repairing it this manner is suggested, but it is not always required to do so. Parts List: (This includes everything you’ll need to complete one of these projects!) Affiliate links assist us in furthering our mission.

  • To be quite honest, I am not a professional in this specific repair category. Despite this, I had no trouble pulling off the trick, and I didn’t even bother checking with YouTube University to be sure I was doing it correctly. In the videos below, you’ll see that the majority of users advocate disassembling the entire burner assembly in order to replace the Thermocouple. On older models, this method of repair is advised, but it is not always necessary. Detailed Parts List: (This includes everything you’ll need to complete one of these projects!) Affiliate connections assist us in raising funds for our charitable organization.

If nothing else, I hope you found it informative, or at the very least motivating enough to help you identify it yourself. Diagnostics can save you a lot of money in the long run, especially if you don’t have the means to outsource all of your maintenance to a professional. Good luck with your rentals, and remember to keep them in good condition. Please let me know if there is anything clear that I have overlooked in the comments area below. Cheers!

How to Replace a Water Heater Thermocouple (6 Simple Steps)

When using a gas-powered tank water heater, have you ever found that the pilot light won’t remain lit for long periods of time? We’re here to provide assistance before you head out the door to seek for a new water heater. It’s possible that a defective thermocouple is the blame. The replacement of a water heater thermocouple is a simple task if you have the correct expertise. It may be sufficient to simply wipe the thermocouple in some circumstances.

What Is a Water Heater Thermocouple?

A thermocouple is responsible for regulating gas flow in an agas-powered water heater. Flame sensors are another name for this feature, which is usually found in modern water heaters. The thermocouple is a component of the pilot burner. It measures temperature. It communicates with the gas control valve, which is located on the unit’s outside. The heat from a flame is converted into little electrical currents, which is the essence of what it does. This enables the thermocouple to function in a manner similar to a switch, regulating the flow of gas through the gas valve.

The gas feed to the burner will be stopped if it does not detect a flame.

For starters, there is a little probe that is approximately one inch long and 14 inches in diameter that is placed right above the pilot opening.

When the pilot light is turned on, the probe is heated by the flame on the ignitor. The second component is a copper tube. A little nut connects this to the front or side of the gas valve, depending on which is used.

Thermoelectric Effect

Known as the Seebeck effect, it was discovered in 1821 and named for the German scientist who discovered it. The Seebeck effect provided the inspiration for the development of the thermocouple we know today (1). The effect may be achieved by using any two kinds of metal. The metals most typically used in water heater thermocouples, on the other hand, are stainless steel and copel, which is a copper-nickel alloy that is utilized in water heaters.

Electronic Ignition vs Standing Pilot

In terms of ignition methods, there are two primary options: standing pilot and electronic ignition. The method by which you should replace the thermocouple is determined on the sort of system in your device. For a standing pilot system, the only components are the pilot and thermocouple, which are both attached to the burner assembly. Electronic ignitions feature the same components as mechanical ignitions, but they additionally have an electronic igniter. Checking for a pilot flame is a simple method to determine if you have a standing or electronic system in place.

Electronic ignition devices rely on a thermostat to determine when the burner should be turned on and when it should not.

How Do You Know If You Have a Bad Thermocouple?

Standing pilot and electronic ignition are the two most common types of ignition systems. Your unit’s kind of setup will determine how you should go about replacing the thermocouple. For a standing pilot system, the only components are the pilot and thermocouple, which are both connected to the burner assembly by means of a connector. In addition to the same components as mechanical ignitions, electronic ignitions feature an electronic igniter. Checking for a pilot flame is a simple method to determine if you have a standing or electronic system installed.

The thermostat is used to determine when the burner should be turned on in electronic ignition equipment.

How to Test the Thermocouple

When in doubt about whether or not you need to replace the thermocouple, we recommend that you test it. Because the thermocouple generates only modest electrical currents, you may check to see if it is working with a multimeter. Start by removing the thermocouple from the gas valve and then starting the pilot – you may need a friend to hold the gas control knob in place while you do this. Select millivolts on your multimeter’s display and wait approximately a minute until the probe becomes heated.

A properly functioning thermocouple will typically produce a reading between 25 and 35 millivolts in most cases (2).

How to Replace a Water Heater Thermocouple

As soon as you have determined that the thermocouple is defective, it is imperative that you replace it.

The process of replacement differs significantly for each system, but we’ll go through the changes in detail later.

1.Removing the Cover Panel

Turning off the gas control valve on the heater is critical before commencing the process. Regardless of whether you have a standing pilot or an electronic ignition, the procedure remains the same. It is now necessary to turn off the main gas supply line by closing the shut-off valve. Assuming you have a working pilot, you may begin to remove the cover panel to uncover the burner assembly underneath the panel. If your burner assembly manifold cover panel has an electronic ignition, you’ll need to remove it in order to service it.

Screws, nuts, and even specialty fasteners may be used, depending on the manufacturer’s specifications.

Then carefully press down to remove the pilot tube, manifold, and thermocouple circuits from the assembly.

It is possible to harm internal components of the burner combustion chamber when removing the manifold and burner pieces from the combustion chamber.

2.Disconnect the Control Valve

To disconnect the thermocouple connection from the control valve, use an open-end or adjustable wrench to pry it apart. In addition, you must disconnect the pilot supply line as well as the main burner supply tube. If you have an electronic ignition, you will also need to remove the wire that connects to the Piezo igniter.

3.Removing the Thermocouple

To disconnect the thermocouple connection from the control valve, use an open-end wrench or an adjustable wrench. Separate the pilot supply tube from the main burner supply tube, if applicable. You must also disconnect the wire that connects the Piezo igniter if you have an electronic ignition.

4.Install the New Thermocouple

Your replacement thermocouple should be installed at this point. If you have a different kind from the one described above, take a closer look at what you have: In the case of Electronic Ignition Systems Insert the new thermocouple through the grommet seal and the aperture in the assembly manifold cover. Replace the old thermocouple. It is necessary to attach the thermocouple within the mounting bracket for both electronic ignition and standing pilot systems. Gently push it into place until it is completely in place or until it clicks, indicating that it is in place.

The burner assembly must be replaced in the burner combustion chamber once it has been removed.

A gasket around the top plate of the manifold is also required when using an electronic ignition system.

If it appears to be damaged or old, it should be replaced with a new one.

5.Reconnect Gas Control

To begin, connect the pilot and burner supply tubes, as well as the thermocouple, to the gas control valve using the appropriate connectors. Make sure the thermocouple is only a quarter turn tighter than it would be by holding it in your hand. If you have an electronic ignition, you will also need to reconnect the Piezo igniter at this time.

After that, open the gas shut-off valve and turn the gas control valve to the “ON” position. Using a standing pilot system, you will need to light the pilot before turning on the gas control valve to ensure that the pilot is lit. The thermostat should be set to the appropriate temperature.

6.Check for Gas Leakage

When dealing with a gas-powered water heater, it’s critical to ensure that there are no leaks in the system. The most effective method of checking is to use a water and soap combination. Cover all of the fittings with the soapy mixture, making sure there are no air bubbles present. If you do find bubbles coming from the leak, double-check and tighten all of the fittings. Check again and again until you’re certain there isn’t a leak.

How Much Is a Thermocouple for a Water Heater?

A thermocouple is a small but critical component of a gas-powered water heater. It is relatively affordable. An experienced plumber can complete the service for you for up to $150 in most cases. If, on the other hand, you opt to follow our instructions and repair it yourself, you’ll just have to pay for the thermocouple replacement, which is typically approximately $20. It is possible to purchase them at your local hardware store, plumbing supply store, or home improvement store. We strongly advise you to bring your old thermocouple to the shop for repair.

Keep It Lit

If you’re having difficulties keeping the pilot light lit or even getting it to light, it’s possible that you have a blockage that may be readily cleared. If this is not the case, it is possible that the thermocouple has to be replaced. Have you ever attempted to repair a thermocouple that was no longer working? Please share your suggestions or thoughts in the section below – we look forward to hearing from you.

How To Replace a Water Heater Thermocouple – Plumbing Repair Guide

Having difficulties keeping the pilot light lit, or even getting it to light, might be due to a simple obstruction that can be readily cleared. The thermocouple may need to be replaced if this is the case in which it is not working properly. A thermocouple that has failed to function has been attempted to be replaced. We’d love to hear your suggestions or thoughts in the section below.

  1. Disconnect the gas supply to the water heater
  2. And Remove the exterior and interior doors
  3. The pilot tube, supply tube, and thermocouple connections should be loosened in order to disconnect the burner assembly from the gas control. The burner assembly should be removed from the combustion chamber. Remove the old thermocouple from the bracket by bending it backwards. Depending on the situation, tension or a screw may be used to secure it. Remove the thermocouple from the bracket by loosening the screw, if there is one, and pulling hard and twisting it out. Install the replacement thermocouple in its place. The thermocouple tip should be positioned so that the pilot flame warms the upper half inch of the tip. In the combustion chamber, replace the burner assembly. Make that the main burner supply tube, the pilot burner supply tube, as well as the thermocouple connection to the gas control valve, are all securely fastened. No more than a quarter turn beyond hand tight should be applied to the thermocouple. Start the gas supply by turning it on. Gas leaks at the gas control valve should be checked using a soap and water solution applied to the main supply tube and pilot supply tube. A leak is indicated by the presence of bubbles. If a leak is discovered, tighten all of the connections. Start by turning on the pilot light. Check that the thermocouple tip is positioned in the flame by 1/2 inch on each side
  4. Inner and outer doors should be replaced.
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The thermocouple should be replaced in order to restore electricity to operate the gas valve and keep the flame burning. If the problem persists, it is possible that the fault is with the gas valve itself. Because of the high expense of replacing the gas valve, it may be more cost effective to replace the complete water heater, particularly with older models.

Water Heater Thermocouple Replacement

Replacing the thermocouple should be sufficient to restore power to operate the gas valve and maintain the flame. The fault might be with the gas valve itself if it continues to occur. The failure of the gas valve may necessitate replacement of the complete water heater owing to the high expense of repairing or replacing it. This is particularly true for older kinds of water heater.

What Do I Do If the Pilot Light Is Out?

If the pilot light on your gas water heater goes out, the water heater will not operate. If you know how to turn on a water heater, the repair is straightforward. You could have a defective thermocouple if your pilot light is going out on you all the time. In order to allow gas to flow to the burner, a thermocouple must detect the heat from a pilot light.

It will cut off the gas supply to the pilot and burner when the thermocouple has failed due to wear and tear. If this is the cause of your pilot light not working, you will need to replace the thermocouple with a new one to fix the problem.

Water Heater Thermocouple Replacement in 5 Steps

You will need to locate a replacement thermocouple that is compatible with your old thermocouple. One that is the same width and length as the other. If it’s an enclosed pilot light, it’s generally best to consult with an expert because it may be a tough problem to solve. Once you have acquired your new thermocouple, you can then remove the old thermocouple and replace it with the new thermocouple by following the instructions outlined below:

  1. To begin, close the GAS CONTROL VALVE and turn it off. After you’ve switched off the valve, you may remove the coverings that cover the burner access holes. Remove the nuts that may be located on the gas, pilot, and thermocouple lines
  2. Next, remove the thermocouple. Remove the thermocouple from the circuit and set it aside. It’s often held in place by a couple of clips, with the end of the rod put into the pilot assembly. The procedure for installing your new thermocouple is the same as the one for installing your old one. Re-open the control valve by turning it back on. Put it through its paces. If all goes according to plan, your water heater should be up and operating as good as new. To resume operations, just re-ignite the gas engine

Starting with the gas control valve, turn it off. The burner access covers can be removed when the valve has been turned off. To begin, remove the nuts that may be found on the gas, pilot, and thermocouple lines; then proceed to the next step. Remove the thermocouple from the circuit and put it somewhere safe. In most cases, it’s held in place with a pair of clips and the other end is placed into the pilot assembly. Install your new thermocouple in the same manner as you did your previous thermocouple, if possible.

Attempt it and see how it works.

Enjoy Your Repaired Water Hater

Repairing a thermocouple that has failed is typically a simple procedure that can be completed in a short period of time, allowing you to have your system back up and running in no time. If, for any reason, you are experiencing difficulties with the installation or detect the scent of gas, stop the installation immediately. While repairing a water heater pilot light, if you are doing everything correctly, you should not be able to detect any gas. If you are feeling concerned or have a query regarding your installation procedure, it is usually a good idea to seek for assistance in repairing a water heater pilot.

Keep in mind that we offer all of the water heater parts and accessories you may possibly want!

As a complement to your current tank system, or even as a replacement for your complete home’s hot water demands, tankless water heaters are a fantastic option.

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Why Your Water Heater’s Pilot Light Keeps Going Out & How to Fix It

The date is May 13, 2021. When the pilot light flame on your gas water heater goes out, it is an annoying and frustrating situation to have to deal with. When your water heater’s pilot light fails to stay lit, you’re left without hot water, which makes even the most basic of tasks such as taking a shower a chore. Naturally, you question, “How did this happen? What happened?” Is there anything you can recommend to help you get things going again? What should I do to have it repaired? “May you tell me about the costs I can expect?” Fortunately, if your water heater pilot light goes out, you should be aware that this is a frequent problem that many homeowners have and that the time and effort required to repair it is low.

Please allow us to guide you through some of the most frequent reasons why your water heater isn’t heating and how to resolve this issue if your water heater pilot light won’t stay lit and you are unfamiliar with water heaters.

Why does the pilot light on my water heater keep going out?

Because of problems with the heater’s thermocouple or owing to access to combustible air, your water heater’s pilot light continues going out repeatedly.

Thermocouple Issues

When your pilot light is on, your thermocouple detects the presence of the flame. The thermocouple’s tip is positioned above the pilot flame, providing a voltage that maintains the gas valve open in the process. A thermocouple will shut down the gas supply to your water heater if it detects that the pilot light on your water heater is not lighting up properly. When thermocouples are exposed to moisture or dust for an extended period of time, they might malfunction, gather dust, or get bent away from the pilot light’s flame.

Lack of Combustible Air

Another reason why your gas water heaterpilot light won’t remain lighted might be that there isn’t enough combustible air in the room where it is located. To keep the pilot light on in your water heater, you’ll need to blow air into it. Otherwise, the flame will be extinguished. Take precautionary measures to ensure that the water heater is not surrounded by material, such as litter or lint, which might increase the quantity of combustible air present. Maintain as much cleanliness as possible in the surrounding region.

What do I do if my water heater pilot light keeps going out?

Try to rekindle the spark on your own first, if at all possible. Take the following general steps:

  1. Locate the gas shut-off knob and turn it all the way to the “Off” position. The gas flow is halted as a result of this. Allow for a few minutes for the gas to dissipate before continuing. To get access to the burner, remove the access panel. To begin the flow of gas, turn the knob to the “Pilot” position. You’ll want to press and hold the knob down for a few seconds. While still holding the gas knob, ignite the pilot with a long lighter while still holding the gas knob. To ignite your gas water heater, use the button on the side of the tank that says “ignite.” As soon as the flames have been extinguished, turn the gas knob to the “On” position and wait for the main burner to come on.

If you are unable to relight the pilot or if your pilot light keeps going out, it is possible that you have another problem, such as a faulty thermocouple, to consider. Please refer to the owner’s handbook for your water heater equipment for further information.

Can I replace a thermocouple myself?

Yes. In the event that you are handy with tools, you may be able to change the thermocouple yourself. It is easier to accomplish this by turning off the gas valve and removing the entire burner and thermocouple assembly. In the case of minor repairs, it is preferable and safer to hire someone who is knowledgeable in the field of repair. A specialist may also evaluate your water heater for other faults and provide advise or ideas on how to deal with any existing or future difficulties that may arise.

Call BGE HOME

Please contact BGE HOME at (410) 918-5600 if your water heater pilot light will not light or continues going out. You may also contact us online. Our licensed specialists are available 24 hours a day, seven days a week to come out and inspect your water heater and make recommendations on how to get it running safely and effectively again. This item was posted on Thursday, May 13th, 2021 at 4:09 pm and is filed under Uncategorized. Commenting and pinging are temporarily closed for this post.

Thermocouple Failure in Gas Water Heaters

You will need to replace the thermocouple in your gas water heater if the pilot light will not remain lit. If you have a gas water heater and the pilot light will not stay lit, it is most likely due to a faulty thermocouple. The breakdown of the thermocouple in a domestic gas water heater is a typical occurrence. The thermocouple is a thermoelectric device that, if the pilot light on the water heater goes out, turns off the gas supply to the water heater. Its function is straightforward, yet it is extremely vital for safety.

  • The pilot gas valve remains open as a result of the modest quantity of electric current flowing through it.
  • Simply simply, if there is no flame, there is no gas movement.
  • Some of the most recent types contain a sophisticated temperature control mechanism.
  • The pilot is activated when the LED on the pilot’s panel flashes.
  • When you contact the manufacturer, it is critical that you have the model number and serial number readily available to you.
  • Thank you for your understanding.
  • Rather than waiting for the manufacturer’s component to arrive, you might elect to purchase a universal thermocouple to save time and money.
  • Thermocouples that are universally applicable are typically available in stock for most models.
  • If you have a thermocouple failure, there is one very essential thing to remember: because replacing a thermocouple requires the use of gas, it is preferable to have the repair done by a competent plumbing firm.

Prior to replace a thermocouple, a skilled plumber should make certain that it performs the following critical functions:

  1. Check the connection at the thermostat/gas valve combination. When it comes to tightness, it should be finger tight + 14 turns. Ensure that the thermocouple is firmly engaged in the pilot bracket by visually inspecting it. Adjust the thermocouple’s tip so that it is completely enveloped by the pilot flame. Check the continuity of the ECO/TCO and, if necessary, replace the combined thermostat/gas valve. Check the operation of the magnet and, if required, replace the combination thermostat/gas valve. Determine the reason for the switch’s activation. Ensure that the thermocouple is in good working order and that it is replaced when necessary

Remember that the thermocouple cannot have any kinks in it’s copper tubing, and that overtightening it can cause the electrical signal to the gas control valve to be shorted, resulting in a fault of the device when it’s installed correctly. McLay Services will be delighted to assist you with any repair, and you can be confident that our qualified technicians are professionals in their field. We have a large supply of the universal thermocouple in stock and can assist you in restoring hot water to your house as soon as possible.

How to Replace a Thermocouple for A.O. Smith Water Heaters

Home-Interior AO Smith gas water heaters are fitted with a thermocouple for safety purposes. The thermocouple’s duty is to shut off the gas valve on the water heater if it detects that there is no flame present in the pilot light of the heater. It is possible that a worn thermocouple will prevent the pilot light from keeping lit, in which case it will be necessary to replace it with a new one. Remove the old thermocouple and bring it with you to the hardware store in order to confirm that you get the proper size.

Step 1

The shutdown valve for the gas supply to the water heater can be found on the gas line that supplies the water heater. To ensure that the shutdown valve is perpendicular to the gas line, turn the handle clockwise.

Step 2

Remove gas flow from the water heater by locating the shutdown valve on the gas line leading to the water heater and turning it off. To ensure that the shutdown valve handle is perpendicular to the gas line, turn the handle clockwise around.

Step 3

Identify the thermocouple, which is a device that has one end linked to the pilot light and the other end attached to the gas line that supplies the pilot light with electricity.

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Step 4

Using an adjustable wrench, unscrew the fittings on both ends of the thermocouple until they are loose. Remove the thermocouple by turning the fittings counterclockwise to release them. Remove the thermocouple.

Step 5

Insert the bigger end of the new thermocouple into the gas line where the old one was removed using the fitting on the larger end of the new thermocouple. The other end should be threaded onto the pilot light assembly. Using the adjustable wrench, tighten both of the fittings. After you’ve lighted the pilot light, turn off the gas and replace the access panel with a new one.

Thermocouple for Water Heater: How does it Work?

Despite the fact that many individuals can describe what a thermocouple is in detail, they may not be aware of one of the instrument’s many practical applications: the thermocouple for a water heater. In some situations, a thermocouple is an advantageous transducer that is used in conjunction with a gas furnace. It is used to determine whether or not the pilot light has been turned on or off. Additionally, it is directly connected to the furnace’s gas valve. When the system lights switch out as a result of heat loss, this instrument detects it and cuts off the fuel injection system.

When the thermocouple fails, you may be able to advise that the water heater be repaired or completely replaced. However, as a result of the enhancements, the repair of this component is now too affordable and straightforward.

Thermocouple for Water Heater Replacement

A thermocouple is a device that is used in water heaters to measure the flow of liquid through the system. Older heater models with specific pilot lights typically have the instrument referred to as a thermocouple, however later models with an electronic system typically have the instrument referred to as a flame sensor, which is essentially the same instrument. To illustrate our concept in this piece, we’ll use the thermocouple for a water heater to explain both of these devices. Using a Thermocouple in a Water Heater (Reference:lowes.com) The thermocouple is a critical component of the pilot burner system, and it connects to the control section on the other side of the water heater to ensure that the pilot burner is functioning properly.

In other words, when the thermocouple fails to detect a flame, it prevents the gas source from supplying gas to the area of the fire that is now burning.

Otherwise, an incorrect thermocouple for a water heater is the most common cause of the water heater’s pilot not operating properly or the burner not operating properly, among other things.

The thermocouple is an integral element of the burner system, whether it be a standing pilot or an electronic version.

Instructions of Replacement of the Thermocouple for Water Heater

It is necessary to first disconnect the gas control valve from the water heater before doing any maintenance on it. Remove the gas control valve from the system and close the shutdown section on the gas supply pipe of the water heater, if applicable. The cover panel of the burner section in standing versions must be removed, and the burner fold cover surfaces in electronic models must be removed as well. It is possible to disconnect the basic burner source tube, the thermocouple connections, and the pilot source tube from the monitoring valve by using an open-end or adaptable wrench on the other end.

How to Replace the Thermocouple for Water Heater on an Electronic Ignition

It is necessary to use tight sealings around the combustion tank of water heaters that use electronic ignition. It is necessary to remove the burner assembly lid in order to correct the combustion source. It is responsible for safeguarding the chamber, as well as the source tube, burner section, electrical component, pilot, and thermocouple. Remove the Burner Assembly Manifold Cover from the burner assembly (Reference:thespruce.com) First and foremost, you should remove the fastening cover from the burner assembly surface.

Depending on the model and brand of a water heater, this panel may be linked by screws, nuts, or specific resistances that are specific to that model and brand.

Remove the Burner Assembly

First, you should unplug the burner supply and carefully lower the manifold to correct the pilot setup and thermocouple connections, which should take a few minutes. The internal components of the manifold assembly will not be harmed if the manifold assembly is carefully removed from the burner source. If the burner does not come off easily, look around the primary surface for any other connections that may have formed there.

Remove the Cover Plate Gasket

The old gasket from the cover plate should be gently removed from the plate, and the metal gaps between the cover surface and the water heater should be cleaned.

Remove the Thermocouple

Finally, cautiously remove the damaged thermocouple from its mounting cover until it is no longer visible. If you apply a small amount of pressure, it will easily disengage. It is not recommended that you damage the connection between the thermocouple cap and the pilot electrode. You should, however, cut the thermocouple if you are dealing with a very delicate scenario.

Install a New Thermocouple for Water Heater

It is possible to utilize the old thermocouple as a reference for finding a correct replacement at a home improvement, hardware, or plumbing store. If you wish to replace the old one, you may get a new sealed manifold plate from a reputable supplier. Thermocouple Replacement for Water Heater Installation (Reference:thespruce.com) You should insert the contemporary thermocouple for a water heater from the opening side of the burner assembly surface. The thermocouple should be fully put into its mounting part in order for it to be properly positioned in its position.

Reinstall the Burner Unit

When installing the unit, make sure that the burner in the source of combustion is appropriately configured. It has the potential to overcome installation issues with a new burner cover portion. More information about Linquip may be found here.

  • What is a Thermocouple and how does it work? How Does It Work?
  • Boiler Parts and Their Function in the Boilers
  • How Does It Work? A Brief Overview of Water Tube Boilers
  • What You Should Know About Water Tube Boilers The operation of a thermocouple is determined by three factors: temperature, pressure, and current.

How to Replace the Thermocouple on a Standing-Pilot Water Heater

An explanation of what a Thermocouple is. This section includes information on how it works, boiler parts and their functions in boilers, and more. It’s Important to Understand the Workings of a Water Tube Boiler. The thermocouple’s functioning is determined by three factors: temperature, pressure, and current.

Remove the Thermocouple

It is necessary to forcefully detach the final thermocouple from the old mounting bracket. It is possible to use strong pressure to avoid the deformation of any component.

Install a New Thermocouple for Water Heater on a Standing Style

When replacing an exact thermocouple for a water heater with an old device found in a home improvement, hardware, or plumbing resource, you may be able to use the old device. After that, the replacement thermocouple should be fitted into the bracket position to ensure that it is completely sealed and correctly positioned.

Reinstall the Burner Unit

In order to replace an exact thermocouple for a water heater, you may use the old device from a home improvement, hardware or plumbing resource. When the new thermocouple is installed in the bracket, it should be completely sealed and correctly positioned.

How to Reconnect the Gas Control Valve

It is necessary to link the burner, pilot, and thermocouple to the gas control valve once the new thermocouple has been set up for both electronic model and standing pilot water heaters, depending on the form of water heater.

Reattach the Gas Tubes

It is necessary to reconnect the burner, pilot, and thermocouple to the gas control valve once the new thermocouple has been set up for both electronic model and standing pilot water heaters.

Turn on the Gas

Close the shutdown valve portion of the gas supply pipe and turn the switch on. You may now adjust the temperature of the system by adjusting the thermostat.

Test the Water Heater

With the help of a soap and water solution, you may examine the operation of the supply tube and pilot source at the control section for gas leaks. It is necessary to fill up the holes with the soapy liquid and check for any new bubbles that indicate a leaking in this fashion. If there is evidence of leaking, you must seal all connections and recheck them using the same procedure.

How to Diagnose and Fix the Thermocouple for Water Heater

Before you can effectively diagnose and discover a problem with a thermocouple for a water heater, you must first learn more about how the problem occurs in the first place. It is possible to locate the thermocouple in the burner portion directly in front of the light, which is made of a certain metal in a cylindrical format. When used in conjunction with a gas-powered water heater, the thermocouple serves as a safety instrument to detect the presence of a burning situation. This implies that if the thermocouple fails to function properly, there will be no way to determine whether the pilot is burning or not, and you will have no hot water resources available in your pumping circuit as a result.

It is not necessary to disassemble the burner system in order to replace the thermocouple.

Disconnecting the ThermocoupleReplacing the Other one

The replacement of the thermocouple is much too simple, requiring just a few simple steps, as well as the removal of the burner. Remove the lid by using a special screwdriver designed for this purpose. Turning off the gas supply is necessary in order to separate the thermocouple from the main section. Using this method, you may secure the gas tubes, the thermocouple, and the gas valve all at the same time. Thermocouple used in the assembly and diagnosis of water heaters (Reference:lowes.com) The new thermocouple for the water heater must be placed in the same manner and at the same location as the old thermocouple for the water heater.

Thermocouple for Water Heater Cost

Another essential component of this essay is the expense of fixing the thermocouple for the Water Heater, which is discussed further below. The condition of the water heater is frequently overlooked by homeowners. Because it has been in operation for an excessive amount of time, this unit has fallen out of sight and out of mind. However, when a damaged water heater has a negative impact on the quality of our lives in a variety of ways, it becomes impossible to ignore. For example, hot showers will not function properly, and washing equipment will not be able to perform at its peak performance while at work.

  1. Is there a leak in your system?
  2. It is quite simple to fix or replace it.
  3. For example, how much will it cost to repair a thermocouple in a water heater?
  4. When it comes to the expense of your electric system repair, one of the most significant considerations is the specific item that need clarification.

In this part, we will provide a broad estimate of how much replacing instruments can cost in terms of money. The average cost of fixing a water heater is approximately $506 in total, according to industry estimates.

Water Heater Replacement vs. Repair (Heading 3)

The price can be determined by a variety of factors. One of the most important decisions you will have to make is whether you want to replace or repair your hot water heater. The life cycle of a water heater is normally approximately 9 years, which is a good rule of thumb to follow while using one. In a typical environment, this is a reasonable estimate to have in mind at all times. Some water heaters, particularly those that are extensively used, may not last this long. Unless your system is more than nine years old and has begun to exhibit signs of wear and tear, it is almost always more cost-effective to replace it.

When a package is less than six years old, however, it is likely that you will wish to fix it rather than replace it, and the replacement technique will not be essential in this instance.

Always consult with a professional plumber for guidance on the best strategy to use for your particular situation.

The Cost of Replacing the Thermocouple for Water Heater

Thermocouples are useful for a straightforward operation. The pilot lights of water heaters are sensed by these sensors to determine if the heater is operational or not. This is used to regulate the flow of gas via the valve. At the end of the day, this strategy only has an influence on gas. If the thermocouple is not functioning properly, it will be unable to identify the problems. As a result, if your system is equipped with a malfunctioning thermocouple, it will be difficult to operate the water heater.

Remove the entire burner and thermocouple system rather than attempting to remove the thermocouples one at a time, since this method is more straightforward.

You should repair your thermocouple if it is not functioning correctly.

How to Check if You Have a Dirty Thermocouple for Water Heater?

A clogged thermocouple is unable to detect the presence or absence of heat. It is also unable to produce accurate results. Even when the pilot light is illuminated, it will occasionally interrupt the gas supply to the furnace. The thermocouple is completely obscured by soot in this situation.

How to Clean Thermocouple for Water Heater?

The power supply must be disconnected from the system before you can begin cleaning the thermocouple. This will prevent you from becoming injured when cleaning the thermocouple. The first issue that has to be addressed is the possibility that the thermocouple’s ends will become oxidized. This can prevent the power procedure from obtaining the pilot lights as a result of this. This issue can be resolved by sanding using emery cloth sandpaper. The cleaning process must be repeated throughout until the entire item is fully cleaned.

When you need to switch on the water heater again to make sure everything is working properly, you may use a flashlight.

If the water begins to heat up as a result of the cleaning operation, the procedure has been completed correctly. If this is not possible, the last option is to replace the old thermocouple.

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