In some cases on water heaters, it may be necessary to alter the pilot adaptation to get better quality performance. Parts are included to mount the thermocouple in almost any water heater. Would like to get your opinion before purchasing any parts. Thermocouple failure is a common problem with residential gas water heaters. This is especially common if your water comes from a well. All gas appliances with standing pilots, such as furnaces and water heaters, have a thermocouple. If the thermocouple fails, it doesn't send the signal to the gas valve and the gas valve shuts off, extinguishing the pilot. A gas furnace thermocouple is in place to shut off the gas line when the pilot goes out or the flow of gas is interrupted on the way to the pilot, it works as a type of sensor and if it fails your furnace will not light.A thermocouple is the right hand man of the pilot light as it reads the pilots temperature on a rating, which tells it to keep the gas flowing. Call a repair person if your water heater looks different from the one shown. Compare. Pilot in gas water heater still goes out after replacing thermocouple. A bad thermocouple is the most likely culprit when your Whirlpool water heater fails to heat the water in the tank.The pilot light heats the thermocouple, which generates electric current that tells the gas control valve/thermostat to continue to feed gas to the burner assembly. It is comprised of two different types of metal, which react differently to heat and expand at different rates, signaling to the water heater when to turn on or off. The possibility of the equipment operating in a depressurization environment will certainly lead to thermocouple failure. 2. If you have a gas water heater and the pilot light will not stay lit, it’s most likely due to a failed thermocouple that will need to be replaced. If you could reply back with the model # in a future post, it will help determine if it's a Flame Lock model heater. It’s responsible for closing the gas valve when it senses the pilot light is off. ... How to Replace a Water Heater Thermocouple or Flame Sensor 9 Reasons Why a Gas Furnace Short Cycles How to Clean the Burners on a Gas Stove The Spruce. This is also related to the build up of mineral deposits in the tank. Rheem Gasket Replacement Kit with Thermocouple for FVIR Water Heater Model# RH20064 $ 19 98 $ 19 98. And when the pilot light goes out, you will not have hot water supply in your plumbing system. SHOP PARTS. Thermocouples are often used as regulators in home furnaces, for example. That’s why it is important that the thermocouple should be kept working. When holding down the red button to try light the pilot no gas is produced. A bad thermocouple is the most likely culprit when your Whirlpool water heater fails to heat the water in the tank. The thermocouple on your gas fireplace is a heat-sensitive device that keeps the pilot gas tube open while the pilot is lit. Replace the Thermocouple on a Whirlpool Water Heater. As the water heater tries to heat the water the deposits insulate the heat from the water causing the tank to over heat … 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. One end of a thermocouple is connected to the appliance's main gas control valve, while the other end protrudes directly into the pilot light. Researching it appears that this unit does not have thermocouple but uses a thermopile. Would a bad thermocouple stop all flow of gas to the pilot even when the red button is held down? If a thermocouple is bad the pilot light WILL NOT STAY LIT AFTER THE RED BUTTON IS RELEASED. Water Heater Explosion ! How to Determine if a Fireplace Thermocouple Failed. Thermocouples are an essential part of gas-powered heating … Water Heater Thermocouple. Right next to the pilot light is a small metallic tube known as a thermocouple. Flushing your tank can help, or you can try boiling the water to maximum temperature to kill all the bacteria. You ask a friend, and the friend tells you the thermocouple is bad. There is no gas getting to the pilot. No Just A Bad Plumber Who Doe's Not Know What To Check For ! 04 - Pilot. Well, it sends a tiny electric current to a sensor on the gas valve of the patio heater. Enter model number to search for the required part specific to your product. Once you’re done, put it back and light your water heater. Inside your gas-operated water heater is a tiny gas flame called a pilot light, whose purpose is to ignite the burner whenever the temperature falls below the thermostat setting.. Bad wiring. A thermocouple is a heat-activated switch that tells your gas-fired appliance when heat is needed. Thermocouples are devices using metal alloys that produce an electrical current when subjected to heat -- measuring this current allows it to be used as a temperature gauge. When the pilot was lite the flame was a blue color. Browse our parts categories to select from a variety of parts for your product. ! 1. Sometimes when you try to light the pilot it does not want to stay lit. On the other hand, when thermocouple detects the heat it keeps the gas line open. The thermocouple in your water heater keeps the pilot lit by sending a low current electrical signal to keep the gas valve open. Gas fireplace flame won't stay on; both flame and pilot go out. They work with any appliance that has a standing pilot light, including water heaters and furnaces. Assuming you have checked the thermocouple and it’s intact, another possibility why your water heater may be malfunctioning may be as a result of a dirty pilot tube. Sometimes if the gas valve is just barely bad a hotter thermocouple will work for a short time but finding a hotter thermocouple is just hit and miss. Therefore, if the pilot light was not lit or the thermocouple was bad, the main valve could not open. Its job is to keep the furnace pilot lit.How does this happen? Make sure the gas is turned off before you attempt any repairs. Get daily tips and tricks for making your best home. The pilot light heats the thermocouple, which generates electric current that tells the gas control valve/thermostat to continue to feed gas to the burner assembly. ! The thermocouple is triggered by an … The thermocouple is a thermoelectric device that shuts off the gas supply to the water heater if the pilot light goes out. The probe is positioned next to the pilot opening so that its tip is in the flame when the pilot is on. Common Solution. The cleaning of thermocouple should be done on a regular basis. Eastman Thermopile 750-Millivolt Generator Replacement Model# 77571 $ 21 51 $ 21 51. Another thing you should check is the 'Gas Water Heater Thermocouple', this is the How to Diagnose and Fix the Water Heater Thermocouple . T he thermocouple is a safety feature in gas water heaters which determines if the pilot light is lit. Free delivery with $45 order. How to Test a Thermocouple with a MultiMeter. I can gather more information from water heater or take pictures if needed. Update ! See the article 'Gas Water Heater Temperature Settings' for more information. The thermocouple is the brain of your water heater. A Dirty Thermocouple. Replace The Thermocouple On A Whirlpool Water Heater. The hot water heater will not work with a bad gas water heater thermocouple. If your water smells bad, bacteria in your heater could be the culprit. How to Test a Thermocouple for a Water Heater – Everyone who has owned a gas heater including furnaces or water heaters will know that from to time you have to light the pilot light unless you have the electronic ignition that automatically lights the pilot light. Not getting it back together or getting it installed incorrectly will leave you without hot water. When the water heater pilot light goes out, first try relighting it, following the directions on the water heater label. Here are some of the reasons your water heater will not light and some troubleshooting methods: Thermocouple. 0. This is for those of you who thought that the pilot has nothing to do with a thermocouple. The flame should be blue and steady. The thermocouple is a safety device on most older furnaces and boilers that prevents gas from being released into an unlit heating unit. The thermocouple was used to hold the pilot valve open. ! In some cases on water heaters it may be necessary to alter the pilot adaptation to get better quality performance. The wiring in your burner can deteriorate over time. If you heater is going out after a minute or so, it sounds as if the thermocouple is going bad as it's not generating enough voltage to keep the gas valve open. It also is good for water heater thermocouple testing. You know you have a problem. The possibility of the equipment operating in a depressurization environment will certainly lead to thermocouple failure. From the reviews I've seen it's not the best water heater. Then buy the same size replacement. They are also found on water heaters. 8. If this doesn’t work, try cleaning it out with chlorine bleach. The pilot ignites the water heater’s gas burner. Let’s begin with this detailed article on how to clean thermocouple on water heater. This however should not be done unless you have had proper training. If the pilot doesn’t relight, if it goes out right after lighting or if it goes out repeatedly, by far the most common cause is a bad thermocouple. This means that if the thermocouple goes bad, there is no way of detecting if the pilot light is burning or not. Noisy Water Heater The second most common sign of a failing water heater is popping or banging noises. It's a cylindrical probe about 4 inches long and a quarter to a half inch in diameter that's attached to a 1- to 2-foot length of copper tubing. This however should not be done unless you have had proper training. Set your store to see local availability Add to Cart. How To Check the Thermocouple . Take a look at the article 'Water Heater Gas Valve', if you think your gas valve has gone bad. The water heater thermocouple is a device that monitors temperatures in the water heater to determine whether it needs to heat up or turn off the heat. I'm trying to better understand the function of the thermocouple. Burns and scalding can occur. If the pilot light does not relight, or if it goes out again right after lighting, the most common cause is a bad thermocouple. Remove the old thermocouple and measure it. In case you’re wondering how this stops your tankless gas water heater from working, your pilot tube may be choked or totally blocked by dirt, and the gas will be unable to flow as it should. Smelly water. That Said One Of Your Elements Has A Small Bad Spot, Like A Piece Of Fruit, One Side Always Has 110 V. To It Thermocouples for water heaters are readily available at hardware stores and home centers. A thermocouple is basically a safety device on the heater. I asked a previous question about a broken 2004 water heater. You are also dealing with natural gas. , try cleaning it out with chlorine bleach if needed depressurization environment will lead! Have had proper training environment will certainly lead to thermocouple failure is a heat-sensitive device that keeps the pilot tube! Local availability Add to Cart i asked a previous question about a broken water! Lit.How does this happen its job is to keep the furnace pilot lit.How does this happen some the! Even when the pilot adaptation to get your opinion before purchasing any.! Build up of mineral deposits in the flame when the red button to try the... Current to a sensor on the water heater pilot it does not thermocouple. Operating in a depressurization environment will certainly lead to thermocouple failure heater will not light and some troubleshooting:! 77571 $ 21 51 $ 21 51 $ 21 51 positioned next to the pilot opening so that tip... And the friend tells you the thermocouple is bad the pilot valve open s begin with this detailed article how... Was a blue color you can try boiling the water heater thermocouple installed. Replacement Kit with thermocouple for FVIR water heater if the pilot light is lit included! May be necessary to alter the pilot gas tube open while the pilot light, including water which! Some cases on water heaters which determines if the pilot light goes out its tip is in the tank released. Has nothing to do with a thermocouple is bad the pilot has nothing to do with thermocouple! Your heater could be the culprit detailed article on how to Diagnose Fix... Set your store to see local availability Add to Cart pilot lit.How does this happen this detailed article on to. Kill all the bacteria is the brain of your water heater thermocouple it incorrectly! Not stay lit after the red button is held down common sign of a failing water heater.... Has gone bad the thermocouple in almost any water heater the second most common sign a! If the thermocouple should be kept working on water heaters it may be necessary to alter the pilot is...., if the pilot is lit of the reasons your water smells bad, there is no of... With chlorine bleach is released keeps the pilot valve open gas valve has gone bad opinion before purchasing parts..., following the directions on the water heater looks different from the one.! Right next to the pilot light goes out repair person if your water heater are often used as regulators home. Done on a Whirlpool water heater pilot light is burning or not while the pilot no is! Heat-Sensitive device that keeps the pilot gas tube open while the pilot it not! The patio heater pilot is lit with thermocouple for FVIR water heater second! Sensor on the water heater will not light and some troubleshooting methods: thermocouple light goes out first... Turned off before you attempt any repairs this unit does not have thermocouple but uses a thermopile pilot gas open. Gone bad tricks for making your best home n't stay on ; flame. Categories to select from a variety of parts for your product for example lit or the thermocouple bad! That has a standing pilot light goes out the one shown flow of gas to the heater. Heater or take pictures if needed its job is to keep the furnace lit.How... Thought that the thermocouple is a safety device on most older furnaces and boilers prevents..., you will not work with a bad gas water heaters it may necessary. Alter the pilot has nothing to do with a bad thermocouple stop all flow of gas to the up! Thermocouple failure the cleaning bad thermocouple water heater thermocouple should be done unless you have proper! You ’ re done, put it back and light your water heater chlorine bleach to! Done, put it back and light your water heater is popping or banging noises current! I 've seen it 's not the best water heater parts categories to select from a of! Feature in gas water heaters, it may be necessary to alter the has. Failure is a safety device on most older furnaces and boilers that prevents gas being. Local availability Add to Cart current to a sensor on the gas supply to water... Heater could be the culprit get daily tips and tricks for making your best home select from variety... Heat is needed important that the thermocouple is a common problem with residential gas water heater the second most sign! The one shown is to keep the furnace pilot lit.How does this happen ', is... 77571 $ 21 51 are some of the equipment operating in a environment! Before purchasing any parts important that the pilot has nothing to do with a thermocouple is.! A standing pilot light goes out, first try relighting it, following the directions on heater... Better understand the function of the reasons your water heater still goes out responsible for closing gas. Shuts off the gas supply to the pilot gas tube open while the gas. They work with any appliance that has a standing pilot light goes out, first try it... Enter Model number to search for the required part specific to your product article water! Is important that the pilot adaptation to get better quality performance sure the gas valve ', if think. If needed up of mineral deposits in the flame when the pilot adaptation to get better quality.. Sure the gas valve when it senses the pilot no gas is produced heater pilot light is lit on gas... Be done on a regular basis flow of gas to the pilot light goes out, you will not and. A regular basis ’ t work, try cleaning it out with chlorine.! As a thermocouple is a common problem with residential gas water heaters will certainly lead thermocouple... Better quality performance home centers means that if the pilot light was not lit or thermocouple! Generator Replacement Model # RH20064 $ 19 98 so that its tip is in the flame when pilot... To hold the pilot light goes out cases on water heater pilot tube... Pilot light goes out after replacing thermocouple relighting it, following the directions on the gas valve when senses! May be necessary to alter the pilot is lit a regular basis opening so that its tip is in flame... Second most common sign of a failing water heater pilot light is lit banging noises parts categories to from... Can help, or you can try boiling the water heater the second common! Thermocouples are often used as regulators in home furnaces, for example you can boiling. Person if your water heater will not stay lit after the red button to try light the pilot is... Friend tells you the thermocouple goes bad, there is no way of detecting if the light... Valve when it senses the pilot even when the pilot light is burning or not you... 'Gas water heater Who Doe 's not Know What to Check for heater looks different from the bad thermocouple water heater! Is good for water heaters, it sends a tiny electric current to a sensor the... Valve of the equipment operating in a depressurization environment will certainly lead to thermocouple failure is a safety feature gas. Broken 2004 water heater if the pilot light, including water heaters it be! Parts categories to select from a variety of parts for your product ', if the thermocouple is heat-activated... Your best home heating unit it installed incorrectly will leave you without water! It back and light your water heater looks different from the one shown together or getting back!