Its a pilot assembly . You need hot water for many daily activities, so a working water heater is essential. A thermocouple or flame sensor is a device used to control gas flow in gas water heaters.On older-style heaters with standing pilot lights, the device is typically called a thermocouple, while on newer units with electronic ignition, the same (or virtually the same) device is called a flame sensor.For our purposes, we'll refer to both devices as the thermocouple. TanklessWaterHeaterExpress is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for website owners to earn advertising fees by advertising and linking to Amazon(.com,, .ca, etc) and any other website that may be affiliated with Amazon Service LLC Associates Program. Now the ends of thermocouple may 22" thermocouple "snap in" for LB White® pilot model heaters. For more detailed difference you can also check this. But some models offer more amps. When the pilot lit goes off due to the loss of heat, this device detects it and it cuts off the fuel supply. How to Replace Thermocouple On A Gas Water Heater? Within the burner compartment just in front of the pilot light you will see a small cylindrical metal, this is the thermocouple. To do this, you can take the help of a range and some screwdrivers. Why Won’t my Pilot Light stay Lit on my Fireplace? Check the water heater for issues that can cause the switch to trip before resetting it. A thermocouple is ends of this piece with an emery cloth sandpaper. As an Amazon Associate I earn from qualifying purchases. 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. Realistically, you have just disabled the thermocouple, but you can also reach in and unclip it from its holding bracket where it meets the pilot light. Make sure nothing blocks the air vents cut in the side of the water tank. A thermocouple is basically a safety device on the heater. How to Clean the Pilot on a Wall Furnace. How to Tell if an Ignitor on a Gas Furnace Is Working, How to Fix a Popping Noise on Water Heaters, How to Convert an Electronic Furnace Filter to a Fiberglass Filter, American Water Heaters: Gas Water Heater With the Flame Guard Safety System Installation Instructions and Use and Care Guide, Whirlpool: Flame Lock Gas Water Heater Operation, Bradford White: The Bradford White Defender Safety System Service Manual, How to Install a Thermocouple for a Propane Wall Heater, How to Fix a Frozen Water Tank in a Side by Side Refrigerator. If the water starts heating up, then the cleaning process worked. Open the windows and doors to the area containing your gas water heater if you have experienced a gas spill or you recently painted the room. If you are done with replacing the thermocouple, follow the reverse procedure to complete the installation. The The sandpaper will be attached to a piece of fabric which makes it easier and flexible to rub on small areas. It will also shut the gas supply to the furnace even if the pilot light is working. Restart the gas water heater by following the lighting directions printed on the side of the water tank. The burner assembly connects to these lines inside the combustion chamber. my water heater stopped working two days ago. After three minutes, turn the valve to the PILOT position. They have unique characteristics in terms of durability, temperature range, resistance, vibration, and application compatibility. Gas-based heaters can be dangerous because it can heat up faster and also there may be gas valve leaks. For example Sid Harvey's Dyna-Couple universal mounting thermocouple, sold in lengths from 18" to 48" will replace Honeywell, Robertshaw, Penn Baso, White-Rodgers and other thermocouples. If there are bigger holes, the passing of winds can be a really common issue for all. One would be to find an original equipment part (OEM). How does this happen? Find the thermal switch on the manifold door. My water heater is an American Water Heater Proline model and doesn't have that thermal switch, at least I can't find it if there is one. The thermocouple is a special sensing tube on gas water heaters that senses when the pilot light has flame, and shuts off the gas to the unit when the pilot has been extinguished. Even though this procedure is very simple, it is still difficult to do without any precautionary measures. Once you reach there, you need to slowly take out the assembly from the lower part of the heater. There must be at least 3 inches of clearance around all sides of the water heater. Aupoko Patio Heater Thermocouple, Outdoor Heater Replacement Parts M8 x 1 End Connection Nuts Thermocouple 410 mm Length M6 x 0.75 Head Thread with 6.3 MM/0.25'' Flat Terminal 4.0 out of … Do not store or use gasoline or other flammable vapour and liquids … 4. ... so my Pentair heater stopped working all of a sudden; the power... pressure valve leaking after thermocouple replacement. This … This task is not that difficult so the homeowners can do this themselves. Blocked vents at the top and bottom of the water heater can cause excessive heat buildup inside the chamber and trip the thermal switch, shutting off the gas supply to the burner assembly. the thermocouple is connected. Push the small button in the middle of the thermal switch to reset it. 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. Now you can see the thermocouple. If you, like many homeowners, use a gas-powered water heater, the thermocouple helps prevent the heater from turning into a danger. Like a water heater or room heater thermocouple, a boiler thermocouple's main function is to shut off the gas valve when the pilot goes out. Locate the other end of the thermocouple cable, where it connects to the gas valve. 2. the thermocouple make sure that you shut off the power supply so that you do The other reason is the vent pipe. The first step is to turn off the gas control hub. Replacement for previous LB White part numbers: 28922, 03497. So, you need to be specific about the weather and then the burner holes. You have two choices when trying to purchase a thermocouple. This unit comes with two 4500-Watt elements and an automatic thermostat which keeps the water at the desired temperature. If you are still not able to figure out which thermocouple should be used, then call the salesperson for help. When 1 of those 2 metals is heated then the voltage is generated. Fits LB White® pilot model heaters: Classic™ 60, Classic™ 115, Classic™ 170, Guardian™ AB250. You may find a small screw on the valve that regulates the size of the pilot flame. I bought a new control unit at Lowe's that was made for a Whirlpool, but I was told was universal. the gas supply to the water heater at the manual gas shut-off valve. Once you have spotted the joints, you need to disconnect it. Pull the gas tubes and thermocouple down out of the gas valve. For gas-powered water heaters, the thermocouple serves as a safety device to detect if the pilot light is burning. (See Figure 1) Depress and hold She has several years of experience in the home-improvement industry, focusing on gardening, and a background in group exercise instruction. These are the most common ones. The thermocouples will work by measuring the temperature differential that comes from the junction area where the output voltage of the thermocouple was measured. How to Clean Thermocouple on Water Heater? Look along the bottom of the water heater. Allow the fumes to dissipate before shutting the windows or doors. Take the help of a sharp cutter to chop off the thermocouple connectivity present. Let’s begin with this detailed article on how to clean thermocouple on water heater. Since some models have screwed panels, you might need to … You need to tighten the nuts properly. LP Propane GAS WATER HEATER PILOT ASSEMBLY AND THERMOCOUPLE, Product Is Highly Durable And Very Easy To Use. ... How to Bypass Heater Pressure Switch. Well, it sends a tiny electric current to a sensor on the gas valve of the patio heater. On the other hand, when thermocouple detects the heat it keeps the gas line open. Replacement thermocouples using "universal mounting" include clips and fittings that will work on most gas fired heaters and water heaters. Check the draft hood at the top of the water heater for obstructions. Why Water Heater Pilot Light Won’t Stay Lit After Replacing Thermocouple? Sometimes when you try to light the pilot it does not want to stay lit. This may prevent power from reaching the pilot lights. If the Status Light still does not flash, turn the gas control knob OFF, turn the gas supply valve OFF, and click on "More Help" below. Gas-based heaters can be dangerous because it can heat up faster and also there may be gas valve leaks. [8 Effective Ways], 5 Amazing Cost Effective Ways to Heat Your Home | 2020 Updated, 8 Best Under Sink Water Heater Reviews 2020 [Buying Guide Inside], 7 Best Outdoor Tankless Water Heater Reviews in 2020 [Buying Guide Inside], What Brand of Water Heater is the Most Reliable? So, if the pilot light is lit and the main furnace is not showing it, it is the time when you need to replace the thermocouple. Find the thermocouple present on the backside of the heater. Rub the Continue doing this till the end of the piece is neatly cleaned. If possible, seal it from both ends to avoid leaks. Why this Happened and How to fix it? not get hurt while cleaning the thermocouple. Harsch received her Certified Nurses Assistant license in 2004. If not, then the replacement of thermocouple is necessary. Note the position of the shut-off valve in the open/on position then proceed to turn it off. If the flame sputters or blows out, the vent pipe needs repairs, or the vent cap could be blocked by debris or a bird’s nest. A thermopile will give you more voltage (~600mV) out of it than a single thermocouple will provide (~30mV). be corroded. You lift the protective flame screen off the patio heater, unscrew the nut and pull out the thermocouple. Its a water heater... And boo you need to buy the whole kit door and all. Make sure that you turn it off before using it. Now you can get to the combustion chamber and you need to remove the burner tube. After doing this turn on the water heater and relight the pilot light. The next thing that you need to do is to replace it with a new thermocouple. If you are done with re-installing the unit, you can now place the burner unit back to the original position. In such a case, the burner may work fine as it is, but the pilot light may not light up. The last thing that you need to do is to re-install the burner. The thermocouple and pilot light tubes both extend from the gas control valve to the burning compartment. So you need to be sure before you start the replacement procedure. Pull out the bolts and slide the thermocouple through the metal bracket that surrounds it. She attended Tarrant County College and studied English composition. Type J, K, T, and E are the ‘Base Metal’ thermocouples. Even if you have installed a new thermocouple, it may generate a weak flame and this is the reason why the pilot light is not blowing. If the flame draws toward the opening, you have a proper draft. As mentioned before that this device will convert the thermal energy to the electrical energy, no wonder that it is also used in the water heater. Medium 6 Year 4500/4500-Watt Elements Electric Tank Water Heater The Rheem Performance 40 Gal. When your gas water heater is operating correctly, hold the flame of a lit match near the draft opening. With a water hose, rinse the inside of the thermocouple tube, let it air dry, then re-connect it. Purchasing a water heater thermocouple is going to involve a trip to the home supply store or some time on the internet. It looks like my 10+ year old hot water heater had a faulty control unit and/or thermal switch. How to bypass your thermocouple on a propane heater - YouTube Under severe weather conditions like rainfall or snow, the vent should be protected. In its probe, the thermocouple contains 2 different metals. I couldn't get the pilot light to stay lit after releasing the red button. If you do it on your own, then it will cost you around $20 which is the price of the thermocouple. There is one thing that you can do yourself. It is that simple! Step 1: If there is a gas valve at the pilot, turn the valve to the OFF position and wait at least three minutes to let any built-up gas dissipate. I looked on my original control unit and it does have those wires, however they go directly into the hole where the thermocoupler screws into. If there is a safety or reset button, push the button, and keep it depressed. The process for replacing a thermocouple in the case of both electric ignition and gas-based ignition is different. There is a small valve present which is responsible for the gas supply.