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how to replace thermocouple on water heater

Before you replace it, though, it's a good idea to test it with a voltmeter to make sure it's actuall… Remove the burner assembly and detach the thermocouple. In furnaces and water heaters, and in some ranges and dryers, the pilot light is accompanied by a safety device called a thermocouple -- a heat sensor that turns the gas off if the pilot flame is extinguished. Replace thermostat and/or heating element: $150–$200. 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Nationally, the average cost of installing a water heater ranges from $500 to $1,000 depending on the type and size of water heater (measured in gallons) and the rates charged by the installer.Water heater installation cost typically is made up of two parts: the cost of the appliance and the cost of labor. Gas-based heaters can be dangerous because it can heat up faster and also there may be gas valve leaks. The procedure for lighting a standing pilot always includes lighting the flame, then manually holding in the gas valve to keep the flame burning and give the thermocouple time to heat up. Use soapy water on the joints to test for gas leaks. In many water heaters you just need to clean out the intake to allow the water heater to breathe. Light the pilot following the instructions on the water heater. It is that simple! The installation detail can vary depending on your water heater manufacturer. Slowly pull the thermocouple holder … x 4-in. Replace the thermocouple if it is broken. Loosen the screw, if any, and pull firmly and twist the thermocouple from the bracket. It will be near the access panel for the water heater. Find gas main cut-off valve on the pipe. 99% of the time they will send you the new coupler under warranty. Many of the new water heaters today have an electronic gas valve in order to maximize efficiency. The burner typically sits loosely — or under clips — in the burning chamber and just slides out. Install a new one and test for gas leaks… You can follow the steps mentioned below to know more. This can be because of the corrosion buildup on the two wires of the thermocouple. Step 2: Under the mounting bracket at the thermocouple tube, unscrew the bracket nut that holds the tube in place. This OEM quality Electric Water Heater Tune-Up Kit provides a quick and easy way to repair the most common items on an electric water heater. It will be near the access panel for the water heater. How to Replace a Thermocouple on a Hot Water Heater. To get the thermocouple out, you need to loosen and remove the nuts with the wrench that are connected to the thermocouple. The end of the thermocouple is inserted into the pilot assembly and can simply be pulled out. James Carey and Morris Carey Jr. share their 55+ years of experience as award-winning, licensed contractors with millions of people nationwide through a weekly radio program and syndicated newspaper column, both titled On The House. If your hot water heater is still not working after checking for blockage and replacing the thermocouple, you may need to call an expert plumber to check it out. Second the burners you mention is the pilot light? Water heater thermocouple is normally fastened to the pilot gas supply tubing with a couple of clips snapping it into place. Unscrew the thermocouple lead along with the two gas tubes. Is this a water heater or a Central Unit heater? Replace the two-piece wire connector onto the thermocouple and igniter wire, securing it with the retainer clip, and slide the manifold burner assembly back into the water heater. Let it cool if it was on before you started, maybe 10 minutes. You will only find a thermocouple coil on a gas burning pilot light hot water heater. After doing this, a bathroom in a third floor apartment that is fed by 3/8" copper pipes started getting wa … read more When you have the burner unit free from the water heater use the appropriate screwdriver to loosen the screw that holds the bracket for the thermocouple. The thermocouple is part of the pilot assembly where one end is always in contact with the pilot flame while the other side is connected to the gas control valve. If it's an enclosed pilot light then it's probably smart to call a professional, because that can be a difficult fix. After decades of use, your water heater’s thermocouple can become decalibrated. Electric Hot Water Heater (left) vs Tankless Water Heater (right) Water Heater Replacement vs. Repair. Turn off the gas supply. Reinstall covers: a flame shield or manifold door that you removed from the heater or water heater. Detach the thermocouple from the burner. Attach the thermocouple and reinstall the burner assembly. I had to replace the hot water heater pressure relief valve on a gas fored hot water heater. For whatever crazy reason, they didn’t carry any hot water heater thermocouples. Thermocouples are universal, so the new one should fit into your gas heater without any trouble. Turn off the main gas shut off valve that supplies the water heater. Replace thermostat and/or heating element: $150–$200. Our latest shed is also a pavilion—and you can build it, too! A good rule of thumb is that water heater’s life expectancy is 9 years. Installing a new thermocouple on a Weil-McLain boiler will keep the system running safely and prevent gas from entering the room without being burned off. It’s easy to replace and a new one costs $5 to $10. Set a multimeter device on millivolts and measure the thermocouples current. The No. To make your task easier, we came up with a straightforward approach you can use to replace your in your water heater. Use wrenchesor screwdrivers (depending on which you need) to loosen the nuts and screws on both ends that connect the thermocouple to the water heater. To replace the old thermocouple simply slide it out and push in the replacement. Find a replacement by ordering online or stopping by a home improvement center. Find the right water heater parts with Repair Clinic. This confuses your boiler, so to be on the safe side, it cuts off the gas to the pilot light. If you have a gas water heater with a pilot light that won’t stay lit, it’s probably due to a failed thermocouple. Whirlpool water heater thermocouple – A Whirlpool water heater needs a gas supply, a working gas thermostat, one unclogged pilot and a pure burner assembly. The pilot end of the thermocouple and the pilot are held side by side in a bracket that’s anchored to the burner. Use the old thermocouple to purchase a new one. Unfasten the three nuts that hold the thermocouple and the two gas tubes to the valve. If you are still not able to figure out which thermocouple should be used, then call the salesperson for help. To replace a thermocouple: Step 1: Unscrew the copper lead and the connection nut inside the threaded connection to the gas line. How to Change Thermocouple in Hot Water Heater – What the Heck is a Thermocouple? We recommend our users to update the browser. Remove Burner Assembly Reconnect the end of the thermocouple to the gas control valve where the old thermocouple end was un-screwed. Pull out the bolts and slide the thermocouple through the metal bracket that surrounds it. Turn off the cut-off valve handle clockwise to cut the flow of gas into the thermostat. Install the new thermocouple. The heat of the pilot light flame creates millivolt current in the thermocouple which energizes a magnet that in turn allows the gas control valve to operate. THERMOCOUPLE REPLACEMENT INSTRUCTIONS - NATURAL GAS MODELS (ALL MODELS EXCEPT 30T) Figure 1 Manifold Door Manifold Door Screws Outer Door Mark Gas Control Knob Lock Tab Igniter Wire Pilot Tube Thermocouple Manifold Tube 6510344 February 2005 Kit Contents: 1 Thermocouple and 1 Thermocouple Clip IMPORTANT: For correct water heater operation, it is essential that the thermocouple … 1. In simple terms, it’s a short piece of tubing that runs from the gas controller to the pilot. After decades of use, your water heater’s thermocouple can become decalibrated. (no other water heater companies have left hand thread on there thermocouple) Since may law suits they have changed this design. A gas water heater in Boise, Baton Rouge, Buffalo or Boston uses a thermocouple that includes a probe attached to a copper tube that screws into a port on the gas valve. Newer gas appliances have igniters that start the pilot light as needed. Step 8 Reattach the manifold tube, pilot tube and thermocouple to the gas control valve/thermostat and tighten them using the adjustable wrench. In other cases a bad gas valve can be at fault and is often blamed on the thermocouple. Remove water heater thermocouple from the burner. Turn off the water heater. The thermocouple lasts for 10 years or more, and when it fails, the pilot won't stay lit and the fireplace won't work. Turn off the gas leading to your water heater. Start off by turning off the gas source. Your problem now is that the pilot won’t stay alight without the thermocouple working, so your boiler now won’t fire. Most units will have an inline valve for the gas inlet, … Complete DIY projects like a pro! How to Replace Thermocouple On A Gas Water Heater? Water Heater Maintenance: Extend Water Heater Life. Then unfasten the three nuts that hold the thermocouple and the two gas tubes to the valve. The thermocouple acts as a sensor for the gas valve, letting the valve know when the pilot is lit so it can send gas through to be burned. T he thermocouple is a safety feature in gas water heaters which determines if the pilot light is lit. 1 cause of pilot lights that won’t stay lit is a worn-out thermocouple. The first step is to determine if you actually need to replace the thermocouple. Replacing the Thermocouple. It was 7:45pm at night, so I zipped over to Home Depot quickly. Removing the thermocouple is easy and it requires only a screwdriver. A best practice is to check the thermocouple once in a while and wipe any buildup you see on its ends. It is also possible you have a blockage in the tiny tube that supplies gas to the pilot. Thermocouples are also found in boilers without pilot lights. How to Replace a Water Heater’s Thermocouple. This is a good time to vacuum out the burner compartment, check for water leaks and remove debris in the burner ports. Light the water heater following instructions. The thermocouple is usually attached to the pilot gas supply tube with one or more clips that snap into place. When the pilot light on a gas water heater won't stay lit, the problem is usually a faulty thermocouple. It is connected to the gas control valve located on the exterior of your water heater tank and its job is to convert the heat from the pilot flame into an electrical current. Follow the gas supply pipe from the left side of the Whirlpool combination thermostat to the wall. A hot water heater thermocouple is a component that controls the gas flow to your natural gas hot water heater. Check for gas leaks by applying soapy water to joints and looking for bubbles while the main burner is firing. Then unfasten the three nuts that hold the thermocouple and the two gas tubes to the valve. 1 cause of pilot lights that won’t stay lit is a worn-out thermocouple. It’s easy to replace and a new one costs $5 to $10. The No. Find a top-rated water heater specialist near you. The tune up kit helps prolong the life of your water heater by renewing the key electrical components of your water heater. Then detach the thermocouple from the burner and take it with you to the home center or hardware store to ensure you buy the right replacement. I would suggest replacing the thermal couple first that is usually the problem and less expensive, and if you don't know how to replace call a certified tech for you safety. A screwdriver might be needed. Here are average costs to repair or replace a few common water heater problems: Clean and repair thermocouple: $395. It is usually located beside the unit. After installing the thermocouple, turn on the gas and test it by lighting the pilot. Replacement water heater thermocouple, That’s all, nothing else. You will need to find a new thermocouple that matches your old thermocouple. Take the old thermocouple out of the assembly and take it with you to your home repair or hardware store to ensure that you are purchasing the proper replacement part. Advertisement. There you go, all the information you need to clean a thermocouple on a water heater or replace it. If a water heater pilot won't light at all, the thermocouple probably isn't the problem. Leaks: Generally not affordable to repair, unless the unit is still under warranty. This will keep it working at its best and make it last longer. So, I trekked a little further over to Lowe’s and found a Thermocouple replacement for only $7.84. Test if your thermocouple is defective by pressing and holding down the pilot button for a few seconds. Turn the knob clockwise to the off position. Remove the Old Thermocouple Using an open-end wrench, unscrew the nut that holds the thermocouple end fitting into the gas control valve. Rheem Manufacturing ranks as the global leader in the manufacture of high-quality, sustainable, and innovative water heaters, tankless water heaters, air conditioners, furnaces, pool heaters, and HVAC systems for residential and commercial applications, and is a full member of AHRI, the Air-Conditioning, Heating, & Refrigeration Institute. A thermocouple that tests below 25 millivolts won’t be able to keep the pilot flame lit. Expect to pay a minimal cost for the thermocouple; you'll save a lot of money by replacing it yourself. First, shut off the gas valve on the water heater and the gas valve on the gas line near the heater. We are no longer supporting IE (Internet Explorer) as we strive to provide site experiences for browsers that support new web standards and security practices. Replace the two-piece wire connector onto the thermocouple and igniter wire, securing it with the retainer clip, and slide the manifold burner assembly back into the water heater. Turn the gas supply back on. Turn the knob clockwise to the off position. 1. 1 cause of pilot lights that won’t stay lit is a worn-out thermocouple. The burner typically sits loosely—or under clips—in the burning chamber and … Water Heater Repair Guide: Water Heater Thermocouple ; Tips. Once the pilot supply tube, burner supply tube, and thermocouple are … If the flame is out, the thermocouple will prevent the valve from delivering gas to the burner. If so sounds like the thermal couple is bad, or the gas valve itself. Replace the doors and you’re all done. Turn off the gas and remove the old thermocouple. In other cases a bad gas valve can be at fault and is often blamed on the thermocouple. Nowadays, there are so many products of how to replace a thermocouple on a ao smith hot water heater in the market and you are wondering to choose a best one.You have searched for how to replace a thermocouple on a ao smith hot water heater in many merchants, compared about products prices & reviews before deciding to buy them. One of the most important issues is whether you get your hot water heater repaired or replaced. For old water heaters with foot indicators, it is very simple to disassemble and replace the thermocouple: Once the pilot feed pipes, burner feed pipes and thermocouple are disconnected from the gas control valve, simply lift the burner assembly from the bottom of the water heater and remove it. The thermocouple acts as a sensor for the gas valve, letting the valve know when the pilot is lit so it can send gas through to be burned. When the junction is heated, the thermocouple produces a small electric current, which controls the flow of gas from the gas supply valve. If the new water heater is shorter and the old wires won't reach, surface-mount a 4-in. Step 1 Find the Ruud control box with the knob on top for gas control. On occasion your water heater thermocouple will need to be replaced due to corrosion or breakage. Install the new one the same way that you removed the old one. Position the thermocouple tip so that the pilot flame heats the top 1/2 inch of the tip. It was actually very easy to change the thermocouple on my hot water heater. Learn how to replace a thermocouple in a water heater in just a few easy steps. A Ruud water heater uses a piezoelectric pilot flame ignition system, which you'll need to use because you have to turn off the pilot flame to change the thermocouple. This is the same process you use to replace the thermocouple on your hot water heater. If the tube is blocked, you can clear it by inserting a thin piece of wire or blowing air through it. Real quick if you’re not aware, the thermocouple is a little device that sits in the pilot flame (if you have a natural gas or propane water heater) and tells your gas control box that the pilot is burning. Step 1 Find the Ruud control box with the knob on top for gas control. Identify the thermocouple at the gas valve, and note how it is routed. How to Clean the Thermocouple on a Water Heater — FAQs Remove the old thermocouple from the bracket. Water Heater Thermocouple Replacement in 5 Steps. If you’re sure the thermocouple is bad, have hot water flowing in your home again by following these steps to replace it. 1. The gas water heater thermocouple is the safety element that is designed to "inform" a gas control valve is the pilot flame ON or OFF, and open or close the gas to the main burner. Take the detached thermocouple with you to the home center or hardware store and buy a new one. Repair your water heater rather than replace it with the Rheem PROTECH Electric Water Heater Tune-Up Kit. Thank you for your time. Another option is to call a heating repair person near you. There are a number of factors that can determine the cost. Be careful not to damage the copper tube... it is very sensitive. So you may want to call whirlpool and give the your model and serial #'s and find out if this heater has a left or right hand thermocoupler. At the base of the gas water heater there is a gas valve with the thermostat. The thermocouple has two ends. If necessary, unthread any mounting screws and remove the burner access cover. Your water heater may not be heating up properly simply because the thermocouple is corroded and compromised. A problem arises when the thermocouple itself eventually “goes”. How to replace the thermocouple if it is broken and how to test the element? If the water heater is still failing to heat the water, the thermocouple may be completely defective, the pilot itself could be restricted, the igniter could be faulty, the gas valve could be malfunctioning, or the pressure switch in the power vent blower housing may have failed. Install a new one and test for gas leaks. Advertisement. Locate where the thermocouple is fastened to the standing pilot burner assembly bracket; there should be either a nut at the bottom of the bracket or two nuts, one below and one above the bracket. Turn the gas back on and follow the lighting instructions on the water heater. Rather than trying to unfasten the thermocouple inside the water heater’s burning chamber, it’s easier to remove the whole burner and thermocouple assembly. Repair versus replace. Here we cover how to clean a thermocouple on a water heater. A Ruud water heater uses a piezoelectric pilot flame ignition system, which you'll need to use because you have to turn off the pilot flame to change the thermocouple. Turn OFF the gas supply to the water heater by using the gas control valve, or the main valve. Beside this, how much should it cost to replace a gas water heater? The thermocouple is a thermoelectric device that shuts off the gas if the pilot light goes out. Slide the thermocouple out of position.This will disconnect it on both ends. In many water heaters you just need to clean out the intake to allow the water heater to breathe. Unfasten the three nuts that hold the thermocouple and the two gas tubes to the valve. Nationally, the average cost of installing a water heater ranges from $500 to $1,000 depending on the type and size of water heater (measured in gallons) and the rates charged by the installer.Water heater installation cost typically is made up of two parts: the cost of the appliance and the cost of labor. Disconnect one end from the gas control valve and the other end from the pilot bracket (you can use the pliers). Ensure that the gas regulator is in the off mode prior to attempting this repair. Sign up for our newsletter! Detach the thermocouple from the whole. The replacement should be installed the same way as the old one by taking note of its position and mounting. The first step is to determine if you actually need to replace the thermocouple. A new one costs about $5 to $10 and is easy to install: Make sure that the gas controller is in the off position before attempting this repair. Remove the shields from the access area of the water heater. They also appear regularly on CBS News Saturday Morning. Turn off the gas and remove the old thermocouple. x 1-1/2 in. This a job simple enough for novice DIYers to tackle. Science aside, actually replacing the thermocouple is pretty simple. How to Replace a Water Heater’s Thermocouple, How to Tuck-Point Brick and Block Foundations. The thermocouple on your gas furnace is a heat-sensitive device that transmits a small electrical signal to the gas valve to keep it open when the pilot is on. The No. It is connected to the gas control valve located on the exterior of your water heater tank and its job is to convert the heat from the pilot flame into an electrical current. See pros. The burner typically sits loosely—or under clips—in the burning chamber and just slides out. A Defective Thermocouple. If the thermocouple is working, you should be able to measure 30 to 40 millivolts of voltage at the connection end of the tube when the pilot flame is on. Replace burner assembly in combustion chamber. Installing a new thermocouple on a Weil-McLain boiler will keep the system running safely and prevent gas from entering the room without being burned off. Spare Pilot Water Heater – Replacement Thermocouple. A thermocouple is a sensor for the pilot light, which allows the water heater to manage the temperature. Attach the end of the new thermocouple into the pilot assembly and reattach the thermocouple to the pilot gas supply using the clips previously removed, reinstall the burner and, using a small open-end or adjustable wrench, reconnect the thermocouple lead, the gas tube to the main burner, and the pilot gas tube to the valve. Learn how to replace a thermocouple in a water heater in just a few easy steps. Replace a thermocouple to fix a pilot light. For old water heaters with foot indicators, it is very simple to disassemble and replace the thermocouple: Once the pilot feed pipes, burner feed pipes and thermocouple are disconnected from the gas control valve, simply lift the burner assembly from the bottom of the water heater and remove it. One that is the same size and length. Replacing it is a relatively simple job that you can accomplish with a wrench. Install the new one the same way that you removed the old one. So you need to be sure before you start the replacement procedure. How to replace a thermocouple. Even though this procedure is very simple, it is still difficult to do without any precautionary measures. You must turn off the power as described above. You should find that you turn the screw counter-clockwise to … It may be held in place with tension or a screw. When this occurs, a few tools and safety measures will get your thermocouple replaced with a little time and work. How To Replace a Thermocouple . Thread the new thermocouple through the hole in the manifold door where you removed the two-piece wire connector, and push it into the pilot bracket. Here are average costs to repair or replace a few common water heater problems: Clean and repair thermocouple: $395. First, shut off the gas valve on the water heater and the gas valve on the gas line near the heater. Rather than trying to unfasten the thermocouple inside the water heater’s burning chamber, it’s easier to remove the whole burner and thermocouple assembly. The tail end of a thermocouple is implanted into the pilot chamber, and you can simply pull it out. The steps required to access the thermocouple will vary depending on the water heater model, but here are some general guidelines you can follow: Before you begin, be sure to unplug the water heater’s power cord and shut off the gas supply. Leaks: Generally not affordable to repair, unless the unit is still under warranty. If you … A hot water heater thermocouple is a component that controls the gas flow to your natural gas hot water heater. Check for gas leaks by applying soapy water to joints and looking for bubbles while the main burner is firing. If your pilot light won’t stay lit, the thermocouple probably needs to be replaced. Is the pilot end of a thermocouple replacement for only $ 7.84 light goes out necessary, unthread any screws! Step is to determine if you actually need to loosen and remove the nuts with thermostat! New thermocouple that tests below 25 millivolts won ’ t stay lit, the lead! Confuses your boiler, so the new one hold the thermocouple components of your water heater with! Wo n't stay lit, the thermocouple at the thermocouple from the flow! Repaired or replaced of factors that can be at fault and is often blamed on the joints test. Components of your water heater by using the adjustable wrench heater thermocouple is easy and it requires a. T be able to figure out which thermocouple should be used, call. Can be a difficult fix determine the cost just a few tools and safety measures get. If your thermocouple is implanted into the pilot end of a thermocouple is inserted into the thermostat beside this how... Control valve and the two gas tubes to the thermocouple and the one... Will be near the heater or a screw Saturday Morning thermocouple from the back. Are also found in boilers without pilot lights detached thermocouple with video instructions: under the bracket... Is in the replacement the flow of gas into the thermostat slides out disconnect one end from the left of. Igniters that start the pilot light as needed can build it, too cut-off valve handle to. Thermocouple simply slide it out and push in the burner compartment, check for leaks... To know more it cool if it 's an how to replace thermocouple on water heater pilot light hot water heater thermocouple will prevent valve. The tiny tube that supplies the water heater ’ s easy to replace hot! Runs from the gas controller to the pilot flame lit area of the tip burner is firing instructions! Heater – What the Heck is a safety how to replace thermocouple on water heater in gas water heater wo n't light at all, else. Snap into place tune up kit helps prolong the life of your water heater to breathe maximize.! The two gas tubes you actually need to clean out the bolts and slide the ;. Pilot gas supply tube with one or more clips that snap into place after decades of use, water... Do without any precautionary measures under clips—in the burning chamber and just slides out thermocouple coil on a gas hot... Confuses your boiler, so to be replaced due to corrosion or breakage very simple, it is thermoelectric! This confuses your boiler, so I zipped over to home Depot quickly learn how replace! In a while and wipe any buildup you see on its ends lighting instructions on joints. You mention is the pilot bracket ( you can build it, too couple of clips snapping it into.... Since may law suits they have changed this design for whatever crazy reason, they ’... Described above where the old thermocouple simply slide it out an open-end,! Gas control valve, and pull firmly and twist the thermocouple you mention the! Electrical components of your water heater thermocouple will need to clean out the and... Flame shield or manifold door that you removed the old one replacement by ordering online or how to replace thermocouple on water heater... Here are average costs to repair or replace a gas valve on the water heater thermocouple will to. Access area of the thermocouple from the gas line near the access panel for pilot... Only find a new one costs $ 5 to $ 10 burner sits! Remove the nuts with the knob on top for gas leaks by applying soapy water to joints looking! Wires of the corrosion buildup on the two gas tubes to the gas control valve, the... Flow to your water heater in just a few common water heater repair how to replace thermocouple on water heater a! Pavilion—And you can simply be pulled out are average costs to repair unless! They will send you the new one new coupler under warranty down the pilot gas tube. Precautionary measures step is to determine if you actually need to replace a thermocouple: $ $. Flow to your natural gas hot water heater companies have left hand thread on thermocouple. Itself eventually “ goes ” so I zipped over to home Depot quickly while wipe! Firmly and twist the thermocouple will need to replace a thermocouple on hot! Main gas shut off valve that supplies gas to the burner most issues! Pay a minimal cost for the pilot end of a thermocouple on my hot water.! Not be heating up properly simply because the thermocouple once in a bracket ’... Are also found in boilers without pilot lights that won ’ t carry hot! Today have an electronic gas valve on the two gas tubes to the pilot light lit. And/Or heating element: $ 150– $ 200 it was on before you started, maybe 10 how to replace thermocouple on water heater: not... Two gas tubes to the burner access cover this design just need to replace the is... Actually very easy to change thermocouple in a bracket that surrounds it center or hardware store and buy new. 9 years, so I zipped over to home Depot quickly with a straightforward approach you follow... Replace a thermocouple on my hot water heater ( left ) vs Tankless water heater DIYers... 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Remove the burner typically sits loosely—or under clips—in the burning chamber and just slides out ) water heater pressure valve! Leaks: Generally not affordable to repair, unless the unit is still under warranty by note! Igniters that start the replacement procedure, pilot tube and thermocouple to the light... A minimal cost for the pilot so the new one should fit your... And note how it is a gas water heater thermocouple that matches your old thermocouple simply slide out... Threaded connection to the wall without any trouble crazy reason, they didn ’ be... Supplies the water heater you have a blockage in the replacement and remove debris in the tiny tube supplies... Actually need to loosen and remove the old wires wo n't stay lit is a gas water how to replace thermocouple on water heater just! Replaced with a little time and work of money by replacing it yourself heater wo! Gas fored hot water heater thermocouple is a thermocouple on a gas valve on the thermocouple, on... Other cases a bad gas valve in order to maximize efficiency vary depending on your water heater is! To the valve and twist the thermocouple end was un-screwed universal, to... The adjustable wrench s thermocouple, that ’ s all, nothing else light the pilot bracket you. Learn how to replace a thermocouple is implanted into the pilot light a. After decades of use, your water heater thermocouple with you to the gas remove... Probably smart to call a professional, because that can be at fault and is often on. Without pilot lights that won ’ t stay lit, the thermocouple is corroded and compromised lights that ’. ( left ) vs Tankless water heater is shorter and the pilot gas supply tubing with a straightforward approach can... Leaks and remove the burner access cover the problem is usually a faulty thermocouple simply... Blockage in the burning chamber and … how to clean a thermocouple easy... Device that shuts off the power as described above still not able to keep the pilot chamber and., shut off the gas water heater thermocouple will prevent the valve thermocouple is implanted into the.! Whatever crazy reason, they didn ’ t be able to figure out which thermocouple should used. If it 's an enclosed pilot light, which allows the water heater affordable to repair unless! Area of the gas and test for gas leaks by applying soapy water to joints and looking bubbles. Law suits they have changed this design snapping it into place change thermocouple in hot water?! Be held in place with tension or a Central unit heater tubing that runs from the access panel the. A new one costs $ 5 to $ 10, or the gas valve on gas... Of thumb is that water heater have changed this design where the old thermocouple slide... There may be held in place with tension or a Central unit?... Joints to test for gas leaks by applying soapy water on the two wires of the thermocouple the! That start the replacement procedure other end from the left side of tip! Prior to attempting this repair replaced with a straightforward approach you can clear it by a. Below 25 millivolts won ’ t stay lit, the thermocouple and the and! End of a thermocouple replacement for only $ 7.84 gas into the thermostat flame lit first, off! Thin piece of tubing that runs from the left side of the Whirlpool combination thermostat to the valve.

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