Turn off the cut-off valve handle clockwise to cut the flow of gas into the thermostat. A good rule of thumb is that water heater’s life expectancy is 9 years. Take the detached thermocouple with you to the home center or hardware store and buy a new one. The end of the thermocouple is inserted into the pilot assembly and can simply be pulled out. A problem arises when the thermocouple itself eventually “goes”. Then unfasten the three nuts that hold the thermocouple and the two gas tubes to the valve. Replace the doors and you’re all done. T he thermocouple is a safety feature in gas water heaters which determines if the pilot light is lit. Step 1 Find the Ruud control box with the knob on top for gas control. Remove the old thermocouple from the bracket. Turn OFF the gas supply to the water heater by using the gas control valve, or the main valve. After doing this, a bathroom in a third floor apartment that is fed by 3/8" copper pipes started getting wa … read more A thermocouple is a sensor for the pilot light, which allows the water heater to manage the temperature. 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. Once the pilot supply tube, burner supply tube, and thermocouple are … Is this a water heater or a Central Unit heater? How To Replace a Thermocouple . Gas-based heaters can be dangerous because it can heat up faster and also there may be gas valve leaks. 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. Water Heater Repair Guide: Water Heater Thermocouple ; Tips. Find gas main cut-off valve on the pipe. Install the new one the same way that you removed the old one. Turn off the gas and remove the old thermocouple. How to Extend Your Water Heater’s Lifespan, Why You Should Invest in a Tankless Water Heater, How to Install a Power-Vented Water Heater, Extend the Life of Your Water Heater by Replacing the Anode Rod, Water Heater Repair: How to Replace the TPR Valve, 5 Highest-Paying States for Masonry Contractors, 7 Tankless Water Heater Myths You Need to Stop Believing, How to Adjust Your Water Heater’s Temperature, This Mistake Can Launch Your Water Heater Through Your Roof, How to Repair or Replace Defective Water Heater Dip Tubes, We are no longer supporting IE (Internet Explorer), Do Not Sell My Personal Information – CA Residents. In other cases a bad gas valve can be at fault and is often blamed on the thermocouple. The thermocouple is usually attached to the pilot gas supply tube with one or more clips that snap into place. Unscrew the thermocouple lead along with the two gas tubes. On occasion your water heater thermocouple will need to be replaced due to corrosion or breakage. Install a new one and test for gas leaks… 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. Reinstall covers: a flame shield or manifold door that you removed from the heater or water heater. Identify the thermocouple at the gas valve, and note how it is routed. 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. The tail end of a thermocouple is implanted into the pilot chamber, and you can simply pull it out. 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. 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. 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. 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. When the junction is heated, the thermocouple produces a small electric current, which controls the flow of gas from the gas supply valve. After installing the thermocouple, turn on the gas and test it by lighting the pilot. 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. Water Heater Thermocouple Replacement in 5 Steps. First, shut off the gas valve on the water heater and the gas valve on the gas line near the heater. Remove the burner assembly and detach the thermocouple. It is that simple! Your water heater may not be heating up properly simply because the thermocouple is corroded and compromised. 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. Turn off the gas leading to your water heater. If the tube is blocked, you can clear it by inserting a thin piece of wire or blowing air through it. A hot water heater thermocouple is a component that controls the gas flow to your natural gas hot water heater. 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. If you … The burner typically sits loosely—or under clips—in the burning chamber and … Newer gas appliances have igniters that start the pilot light as needed. metal electrical box on the wall or ceiling nearby, run the old wires to the box, and then run a new section of armored cable or electrical conduit to the water heater. Replace a thermocouple to fix a pilot light. Remove the Old Thermocouple Using an open-end wrench, unscrew the nut that holds the thermocouple end fitting into the gas control valve. 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. You will need to find a new thermocouple that matches your old thermocouple. 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. The thermocouple has two ends. The tune up kit helps prolong the life of your water heater by renewing the key electrical components of your water heater. Start off by turning off the gas source. 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. 1. Beside this, how much should it cost to replace a gas water heater? How to Replace a Water Heater’s Thermocouple. It is also possible you have a blockage in the tiny tube that supplies gas to the pilot. 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 … When this occurs, a few tools and safety measures will get your thermocouple replaced with a little time and work. Find a replacement by ordering online or stopping by a home improvement center. Replace thermostat and/or heating element: $150–$200. How to Replace a Thermocouple on a Hot Water Heater. Turn off the water heater. The burner typically sits loosely—or under clips—in the burning chamber and just slides out. A best practice is to check the thermocouple once in a while and wipe any buildup you see on its ends. Let it cool if it was on before you started, maybe 10 minutes. This a job simple enough for novice DIYers to tackle. There are a number of factors that can determine the cost. 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. Light the pilot following the instructions on the water heater. Second the burners you mention is the pilot light? So, I trekked a little further over to Lowe’s and found a Thermocouple replacement for only $7.84. Reconnect the end of the thermocouple to the gas control valve where the old thermocouple end was un-screwed. We recommend our users to update the browser. First, shut off the gas valve on the water heater and the gas valve on the gas line near the heater. Leaks: Generally not affordable to repair, unless the unit is still under warranty. Before you replace it, though, it's a good idea to test it with a voltmeter to make sure it's actuall… Removing the thermocouple is easy and it requires only a screwdriver. Our latest shed is also a pavilion—and you can build it, too! 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. If you are still not able to figure out which thermocouple should be used, then call the salesperson for help. In many water heaters you just need to clean out the intake to allow the water heater to breathe. One of the most important issues is whether you get your hot water heater repaired or replaced. 1. A thermocouple that tests below 25 millivolts won’t be able to keep the pilot flame lit. Water Heater Maintenance: Extend Water Heater Life. Sign up for our newsletter! 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. 1 cause of pilot lights that won’t stay lit is a worn-out thermocouple. If so sounds like the thermal couple is bad, or the gas valve itself. Test if your thermocouple is defective by pressing and holding down the pilot button for a few seconds. Use soapy water on the joints to test for gas leaks. If the flame is out, the thermocouple will prevent the valve from delivering gas to the burner. Replace the thermocouple if it is broken. How to replace a thermocouple. Slide the thermocouple out of position.This will disconnect it on both ends. If you’re sure the thermocouple is bad, have hot water flowing in your home again by following these steps to replace it. The replacement should be installed the same way as the old one by taking note of its position and mounting. Step 1 Find the Ruud control box with the knob on top for gas control. Unfasten the three nuts that hold the thermocouple and the two gas tubes to the valve. Beside this, how much should it cost to replace a gas water heater? To make your task easier, we came up with a straightforward approach you can use to replace your in your water heater. One that is the same size and length. Water heater thermocouple is normally fastened to the pilot gas supply tubing with a couple of clips snapping it into place. Attach the thermocouple and reinstall the burner assembly. Be careful not to damage the copper tube... it is very sensitive. 1 cause of pilot lights that won’t stay lit is a worn-out thermocouple. 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. Another option is to call a heating repair person near you. Thermocouples are also found in boilers without pilot lights. Light the water heater following instructions. At the base of the gas water heater there is a gas valve with the thermostat. If you have a gas water heater with a pilot light that won’t stay lit, it’s probably due to a failed thermocouple. Your problem now is that the pilot won’t stay alight without the thermocouple working, so your boiler now won’t fire. Ensure that the gas regulator is in the off mode prior to attempting this repair. So you need to be sure before you start the replacement procedure. This confuses your boiler, so to be on the safe side, it cuts off the gas to the pilot light. The pilot end of the thermocouple and the pilot are held side by side in a bracket that’s anchored to the burner. 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. Slowly pull the thermocouple holder … Turn off the gas and remove the old thermocouple. It may be held in place with tension or a screw. Science aside, actually replacing the thermocouple is pretty simple. (no other water heater companies have left hand thread on there thermocouple) Since may law suits they have changed this design. Turn the knob clockwise to the off position. You can follow the steps mentioned below to know more. Find a top-rated water heater specialist near you. The first step is to determine if you actually need to replace the thermocouple. If the new water heater is shorter and the old wires won't reach, surface-mount a 4-in. 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. To replace the old thermocouple simply slide it out and push in the replacement. How to replace a gas water heater thermocouple with video instructions. Complete DIY projects like a pro! Spare Pilot Water Heater – Replacement Thermocouple. Use the old thermocouple to purchase a new one. 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. Follow the gas supply pipe from the left side of the Whirlpool combination thermostat to the wall. If necessary, unthread any mounting screws and remove the burner access cover. If your pilot light won’t stay lit, the thermocouple probably needs to be replaced. For whatever crazy reason, they didn’t carry any hot water heater thermocouples. They also appear regularly on CBS News Saturday Morning. 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. You should find that you turn the screw counter-clockwise to … Find the right water heater parts with Repair Clinic. 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. Learn how to replace a thermocouple in a water heater in just a few easy steps. Unfasten the three nuts that hold the thermocouple and the two gas tubes to the valve. Repair your water heater rather than replace it with the Rheem PROTECH Electric Water Heater Tune-Up Kit. Even though this procedure is very simple, it is still difficult to do without any precautionary measures. 1 cause of pilot lights that won’t stay lit is a worn-out thermocouple. How to Clean the Thermocouple on a Water Heater — FAQs 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. A Defective Thermocouple. To get the thermocouple out, you need to loosen and remove the nuts with the wrench that are connected to the thermocouple. Turn off the gas supply. If it's an enclosed pilot light then it's probably smart to call a professional, because that can be a difficult fix. 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. It’s easy to replace and a new one costs $5 to $10. The thermocouple is a thermoelectric device that shuts off the gas if the pilot light goes out. Loosen the screw, if any, and pull firmly and twist the thermocouple from the bracket. The No. It was 7:45pm at night, so I zipped over to Home Depot quickly. There you go, all the information you need to clean a thermocouple on a water heater or replace it. 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 knob clockwise to the off position. I had to replace the hot water heater pressure relief valve on a gas fored hot water heater. Step 2: Under the mounting bracket at the thermocouple tube, unscrew the bracket nut that holds the tube in place. Advertisement. In many water heaters you just need to clean out the intake to allow the water heater to breathe. 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. The No. Replacing it is a relatively simple job that you can accomplish with a wrench. Leaks: Generally not affordable to repair, unless the unit is still under warranty. 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. It was actually very easy to change the thermocouple on my hot water heater. 99% of the time they will send you the new coupler under warranty. Check for gas leaks by applying soapy water to joints and looking for bubbles while the main burner is firing. Turn the gas supply back on. Electric Hot Water Heater (left) vs Tankless Water Heater (right) Water Heater Replacement vs. Repair. If a water heater pilot won't light at all, the thermocouple probably isn't the problem. A screwdriver might be needed. 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. Here are average costs to repair or replace a few common water heater problems: Clean and repair thermocouple: $395. The thermocouple lasts for 10 years or more, and when it fails, the pilot won't stay lit and the fireplace won't work. Many of the new water heaters today have an electronic gas valve in order to maximize efficiency. Detach the thermocouple from the whole. A hot water heater thermocouple is a component that controls the gas flow to your natural gas hot water heater. Install the new thermocouple. In simple terms, it’s a short piece of tubing that runs from the gas controller to the pilot. To replace a thermocouple: Step 1: Unscrew the copper lead and the connection nut inside the threaded connection to the gas line. Step 8 Reattach the manifold tube, pilot tube and thermocouple to the gas control valve/thermostat and tighten them using the adjustable wrench. How to Replace a Water Heater’s Thermocouple, How to Tuck-Point Brick and Block Foundations. Replace burner assembly in combustion chamber. This is the same process you use to replace the thermocouple on your hot water heater. 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. Check for gas leaks by applying soapy water to joints and looking for bubbles while the main burner is firing. The first step is to determine if you actually need to replace the thermocouple. 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. Turn off the main gas shut off valve that supplies the water 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. 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. 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. 1: unscrew the copper tube... it is routed parts with repair.... The home center or hardware store and buy a new one costs 5. 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