If the pilot light does not stay lit, it should be replaced. thermal cut off switch (TCO). We usually recommend replacing all old components, including the elements, with new ones. Fire Protection; Pipe, Valves, & Fittings; Pipe Supports; Plumbing; Finish; Premier Bath & Kitchen; Premier Pump . Gas Water Heaters Gas Tank Gas Tankless High Efficiency Condensing Gas Tank Combi-Boiler Electric Water Heaters Electric Tank Electric Tankless Hybrid Electric Heat Pump Electric Point-of-Use More Info Water Heater Sizing Water Quality Impact Tankless Water Heater Safety Tank Water Heater Safety Water Heater Venting Product Literature Newsroom Worldwide Manufacturing Locations Parker Hannifin Corporation Filtration Group . We have fast FREE SHIPPING on all orders over $99 and ship all orders within 1 business day. There are several reasons why a water heater thermal switch keeps tripping, and its often due to a blocked vent. . The water at the tap is hot. However, a thermal switch can trip if there is a problem with the thermostat, wiring, breaker, or reset button. The nightshade family, according to WHFoods, includes, Billy Porter has the appearance of Adina Porter, but he is not related to her. What does TCO stand for on a water heater? Journeyman Service Techni. Nowadays, almost every gas water heater has its thermal switch on it to resist overheating. The items are wire nuts or an in-line fuse, electrical fuse, crimper, electric tap, ScrewDriver, and safety tools. Contact a service agency to determine cause. 1) Manual reset is accomplished by first, turning off power to the water heater for 10 seconds. If you are familiar with electronic gadgets and tools, then you can bypass the thermal switch on the water heater by yourself following the mentioned instructions. The TCO is a thermal switch that resets automatically. Www.northernparts.comGasket Door 1000507 0704107 Screw #8-32 X 5/8 Thms Ss JI 1000508 Wire Grid Whirlpool 1001133 317974000 Deflector Water Relief Valve 1001135 560003083 Cover Solenoid UF1 1001137 638036069 1001138 Heater Motor 220V 50/61 1002970 620903703 Graphics ED150-8/175 Gen Dom 1002971 . Then, unplug it and clean out any blockages or debris in the vents. There are all sorts of remedies to help Do You Need Water Heater Repair Services? Check if you can smell any gas leaks if you are using a natural gas heater. How does a thermal cutoff switch work on newer gas water heaters? It may not display this or other websites correctly. When activated it will open the. Call us at 1.647.558.4079 anytime or email at . I have to keep the water temp on LOW in order for the switch not to trip. We use cookies to ensure that we give you the best experience on our website. The heating element is what brings the water in your heater to the correct temperature. The TCO is a thermal switch that resets automatically. Gas Water Heater Installation 4.2 Installing The Water Hose 6. The price depends on the quality of the normal thermal switch. The high limit switch may be the cause of the hot water heaters constant tripping of the reset button. Restart the water heater and wait 3 seconds for the system to do a self-diagnostic check. What are the shipping options for Rheem PROTECH Water Heater Thermostats? Even though the thermostat is working due to sediment buildup, a lack of regular maintenance can cause issues. Finally, reset the thermal switch to turn on the water heater once again. While most gas heaters only utilize one heating element, electrical systems have two. Get genuine A.O. The dishwasher used to have hot washes for two years so it's definitely not a switched water line. It is mainly an electric device, though it is not any heating element. Water Heater Gas Valve Replacement Watch on 4. Does the water heater switch need to be on? Buy online or pick it up in-store today! Pilot burner w/orifice and tubing 3. Turn off the electrical connection to the electric water heater before starting the servicing or repairing work. How to Complete a TCO Analysis for Cloud Services Share Watch on When this temperature is reached, the thermal switch will trip, and the water will not get any hotter. water heater, any treatment would not be considered warranty related. What's the price range for Rheem PROTECH Water Heater Thermostats? What else can I try? This just kind of repeats when there is demand for the hot water, otherwise it just stays at the 3 blinks for the most part. He has been learning and practicing different trades since he was a kid, and hes often the first one called when a friend or family member needs a helping hand at home. 23.63". However, the reset button doesn't need to always be near the thermostat. Some water heaterslike hybrid water heaters for exampleutilize air to heat water. If you have found out the precise panel, locate the thermal TCO switch. Hot Water Heater Error Troubleshooting and Repair: TCO or pressure switch failed closed. Rick HVAC Supervisor 39,136 satisfied customers york gas furnace wont ignite, hear whinning sound when turned on but never ignites with flsmes Rick HVAC Supervisor 39,136 satisfied customers How Many Watts Does A 5 Ton Air Conditioner Use-How Do I Calculate, Do Air Conditioners Work Harder In High Humidity. A thermal switch is installed in newer gas water heaters as a safety device. Filters. You can keep these things near you if you want to bypass the TCO switch or Thermal switch on the hot water heater. Precautions to be taken while using or doing maintenance the hot Water Heater. The reset button is also known as the ECO (emergency cutoff) switch or high limit safety thermostat switch.. Your email address will not be published. It may require some troubleshooting, but you can use this guide to save you some time and trouble when your water heater thermal switch keeps tripping. If your water heater's Status Light starts flashing, the thermal switch has probably tripped. Tripped TCO Switch (only on water heaters manufactured after March 2006 Check the resistance of this switch with an ohmmeter on a low scale. The average price for Rheem PROTECH Water Heater Thermostats ranges from $10 to $400. The reset button is a red button on the water heater (just above the thermostat) that spins when the water temperature exceeds 180 degrees. If your one doesnt work or anything else, bypassing the thermal switch on gas heaters is still not good. For a better experience, please enable JavaScript in your browser before proceeding. At a specific level, the pilot flame should touch the thermocouple. When it trips, you will hear a clicking sound. The switch also trips when it senses flammable vapors near the water heater, such as gasoline or paint fumes. Use a multimeter to check the electrical connection on the wires. Now it is not heating. However, as time goes on, a thermal switch will wear down, and eventually, it will struggle with reading the temperature of water inside the tank. UPS, FedEx and USPS have modified their service guarantee. There are all sorts of methods out there. 4. XH-W3001 Digital LED Temperature Controller Module Digital Thermostat Switch with Waterproof Probe Programmable Heating Cooling Electronic Thermostat Range from -50 to 110 (12V 10A 120W) (2 Pieces) 215 $1199 - $1899 FREE delivery Here are the common questions that are asked about water heaters and the thermal switches they utilize. Smith OEM Water Heater Parts; A.O. If everything is OK, the switch must close and remain closed during the heating operation. Thermal cutoff (TCO) is mechanical bi-metal disc thermostat, also called a temperature sensor, thermal switch, thermal limit switch that operates as a single-pole switch to turn a circuit on or off depending on specification. Stocking the largest selection of appliance parts, heating, plumbing, lighting, and janitorial supplies, AMRE ships almost anywhere in Canada within 24 - 48 hours. Shop for John Woods Parts at AMRE supply. A thermal switch basically senses the flammable vapors, and it gets activated near the water heater. Disconnect the wires to the switch and perform the test while a blower is running. 3. Provides automatic temperature and pressure protection for water heaters. After Access This Document. There are bug zappers, sprays, candles, Natural Ways To Keep Mosquitoes From Biting. These elements are never on at the same time as a safety measure to ensure that the water inside the tank doesnt get too hot. 4 light ECO Limit Lockout code. The exhaust line is blowing exhaust air. 3400 Finch Road, PO Box 3208 Modesto, CA 95353 Retrieve Doc, RESIDENTIAL GAS WATER HEATERSwater heater Btu/hr or kW input rate as shown on the water heaters model rating plate. Whats going on is that the thermostat isnt properly controlling the heat. 3. Check near the thermostat, and you will find it. The water line into the dishwasher comes directly from the hot water line under the sink. Heating elements are used only in electric water heaters to warm up the water in the tank. In this case, you need to replace the exhaust vent and the fan. You are using an out of date browser. I put my multi-meter into the pins belonging to the circuit with the heating element and it reads 16 ohms. Smith 100210102 High Limit Switch; SKU: 1151694 . Brand: Whirlpool | Category: Water Heater | Size: 3.15 MB. Reply A worn-out thermocouple is one of the causes of pilot lights that wont stay lit. A. O. 17.75". I know its is an old thread, but maybe somebody is here looking for answers. If not so, please take help from the professional. A mechanical bi-metal disc thermostat, also known as a temperature sensor, thermal switch, thermal limit switch, or thermal cutoff, is a single-pole switch that turns a circuit on or off. in stock ready to ship. Who would have guessed that turning it up would break it. If you have trouble with your water heater's thermal switch, there are a few easy things you can do to reset it. control (TCO) breaks the power circuit to the heating element. American Water Heaters N50T122-403 gas water heater parts - manufacturer-approved parts for a proper fit every time! An example of a common Thermal cut out switch (TCO) - Mira 439.90. The thermal switch is a reliable safety mechanism, but if it keeps tripping, then its likely this component is faulty. Connect the Thermal switch with those wires using the wire nuts. 2 years later, it's starting all over. This requires turning off the gas supply to the water heater. It was sold by Lowes until 2015. I recommend you replace the thermal switch Instead of bypassing it. Moreover, there are so many different water heaters out there these days, and most systems run differently in this situation. 2. D. Thermal Cutoff (TCO) with manual resetA. Currently, most water heaters have thermal switches adjusted during manufacturing. Post a fix for a water heater that may save another person's spouse from going nuts. What Does ECO Mean On An Air Conditioner? Many times you can not just simply replace the TCO switch when it is broken. Known as a thermal fuse, thermal link, or TCO, the MICROTEMP thermal cutoff provides protection against overheating by interrupting an electrical circuit when operating temperatures exceed the rated temperature of the cutoff. Storage Water Tank. What exactly is a TCO for a thermocouple? Matt loves to work with wood and stone, and landscaping is by far his most favorite pastime. Step 2: Press the Heater's Reset Button. Check the upper thermostat if there is no hot water, the supply is inadequate, or it is too hot. A thermal switch can repeatedly trip on a water heater a thermostat or the heating element is damaged. The high limit switch interrupts the main burner gas ow should the water temperature reach 195F (91C). Check the water flow of the heater. A plumber may not be able to fix the wiring or breaker-related issues, and therefore an electrician will be required. If your heater has a faulty thermostat, you need repairing. Because heavy gauge wires provide electricity to your units components, a bad connection between the wires and the water heater may result in the element failing. Enabling Switches and Tools for Disabled People, Aopin Thermal Control Switch KSD301 Normally Closed NC 135 Degrees 250V High Current 20A Thermostat Temperature Switch 4pcs, SEKI HB-2 Korea Temperature Sensor Thermal BIMETALLIC Switch Thermostat Thermal Protector Motor Protector Cut-Out 50~150 (120), All customers get FREE Shipping on orders over $25 shipped by Amazon. Your system likely has two thermostats if it runs on electricity. Matt loves everything DIY. If it trips or breaks, the pilot won't stay lit. As well you'll see how to test a thermal cutoff switch for continuity. She writes mainly home improvement, health and travel articles for various online publications. Fits water heaters with up to 3 inch of foam insulation. Again, this is the case only with an electrical heater that utilizes two thermostats. It prevents accidents by cutting off the electric connection or gas control. All this because I turned the darn thing up to high. I work for a real estate company with duplex units. On this page we provide information about all parts of our various devices with drawings in which all parts. The flame arrestor having contained a flammable vapor ignition. Jake Appliance Tech - Admin Staff member Joined Aug 24, 2004 Messages 138,144 Location Check manual disconnect switch, fuses and service panel breakers. The heater is only about 6 years old, house was built in 2016 and we're the 2nd owners. As was explained earlier, a thermal switch is included to cut off power in the event that the water inside a heaters tank exceeds 180F. The water heater is a Whirlpool ND50T122-403. However, it is ideal to hire a plumber if there is a blockage deep within either of the vents. I finally went down to look at it after a truly cold shower, and found that the controller is giving 3 blinks, indicating "TCO or Pressure Switch Failed Open." Temperature relief at 210F and pressure relief at 150 PSI. What should you do if the water heater reset button does not work? In this manner, how do you reset a TCO switch? Thermocouple TCO malfunction. Replace pilot assembly. Im a Physicist with proper knowledge on Thermodynamics. Hybrid electric residental (48 pages) Water Heater GE GEH50DXSRGA Owner's Manual & Installation Instructions. It is ideal to hire a professional plumber to replace your thermostat. Find My Store. Cleaning between the threads of the screw that connects your thermocouple to the control valve can be done with a pencil eraser. Global Headquarters Water Purification Racor . The thermal switch or TCO switch is generally considered a Safety feature. The thermocouple life, which should have taken about a year, was reduced to within a week in this scenario. Push the small button in the middle of the thermal switch to reset it. Water Heater Safety. Thermal switches are used in power supplies in case of overload, and also as thermostats, and overheat protection in some heating and cooling systems. Dont touch any exposed wire without checking the electric connection. The water at the tap is hot. Tank Water Heater Parts Divisions. A professional plumber will help you replace your thermostats, as theyll know which thermostats are compatible with your system. It is a great way to escape many unpredictable accidents. In this way, you are ensuring the long lifespan of your machine. I'm fairly handy with most things, but don't have as much experience with hot water heaters. The thermal switch keeps blowing. Once the control opens, it must be reset manually. Or you can drain the unit of all water. Clean the flame trap, or flame arrestor, beneath the burner inside the combustion chamber. You can use the electric tap for a more safe connection. Make sure to check if the gas control valve, combustion chamber, and boiler are working in a proper way. 4. 1. Can Air Conditioner Cause Smoke Alarm To Go Off. There is generally one thermostat on the upper part of the system and another at the bottom. Smith 100210102 High Limit Switch at Supplies Depot. (REVIEW THE PICTURES) Hi. When a water heater shuts off because it has become too hot, this can be an alarming situation. Gas heaters, propane heaters and electric water heaters are very popular as a hot water heater compared to other heaters, they are more convenient to use and less risky. The control will be reset and a standard flash code will be shown (slow blinking). If during this time you smell gas, immediately stop what youre doing and open all the windows and doors in your home. If your water heater has a thermal reset button, press and hold it for up to 4 seconds to reset your appliance. 7. 3. On the contrary, the Normal closed thermal switch is used on appliances like refrigerators. Read These Instructions Thoroughly Before Starting , TB116- Flameguard Pilot Outage Checklist Rev C JohnWood. What I know: State GS6-40-BCT Serial #107513725 16" Burner Assembly #34 Orifice Serial #100210042 Best parts list I can find: https://eportal.hotwater.com/Commerce/PartsList?s=1737107513725#web-app How do you reset the gas control valve on a Richmond water heater Serial #Q511716957 Model #6GR40PVE2-40 The control valve is Honeywell. Water heaters are widely used in temperate countries. BillyHvac. No matter what is tripping your water heater's ECO, it is a problem that needs to be addressed right away. (Electronic Gas Valve) https://youtu.be/UXpmmGuewk8Thermopile - Voltage Test \u0026 Replacement (Electronic Gas Valve) https://youtu.be/Yx2gfgJB7bIWater Heater Troubleshooting and Repair Guides https://www.youtube.com/playlist?list=PLCo9SMjkdWBwJ4a8MT2GKTDiSuvSHg6Xk___________________________00:00 Intro00:33 How it Works01:42 What You'll Need02:03 Disconnect the Water Heater02:28 Continuity Test03:32 Replace the Switch04:02 Turn on the Water Heater___________________________AMRE Supply provides homeowners, service contractors, and property management with the parts and knowledge needed to get the best performance out of any property. Its too strong if it extends far above the thermocouple. pool opENINGS If at the end of the previous season Retrieve Content, Water: Upright Hot Oil Temperature Control Units. Temperature changes can cause metal to expand and contract on a regular basis, weakening thermocouples over time. The main difference between Thermocouple and Thermopile is the measurement method. Restart the gas water heater by following the lighting directions printed on the side of the water tank. What does total cost of ownership ( TCO ) mean? It cuts off the current to critical machinery when a temperature limit is exceeded preventing potential burn out or failure. Hybrid electric residential water heater (68 pages) Water Heater GE GeoSpring GEH50DFEJS Owner's Manual. I'm just curious if this seems to fit the symptoms. I got it around 2010 or so, so only 7 years old, and it is a 12 year model, so I'd hate to get rid of it already. To reset the thermal switch, press the small button in the middle. My natural gas "State Priline XE" hot water heater is blinking the error above. A thermal switch can repeatedly trip on a water heater a thermostat or the heating element is damaged. Table of Contents. When the strips move apart, this interrupts the electrical supply between the terminals - acting as a switch. Smith Switches are brand new in the original factory packaging and are guaranteed to fit and function properly. Then you just need to follow these steps. Water Heater: Pressure Switch Failed Open My water heater stopped working (after more than 1 year of never having a problem). It was installed in 2016. Push and release the button once youve found it. Its good that a water heaters thermal switch can prevent the loose wire from disrupting how the system functions, but if loose wire causes the thermal switch to keep having to be tripped, eventually the switch may wear out. Here are some things to keep in mind when you are repairing or servicing a hot water heater . Required fields are marked *. The troubleshooting light blinks 3x which indicates that "Pressure Switch Failed Open". Light the pilot light, and it flashes the light after just a few seconds. AO Smith supports you with a wide range of parts and accessories and has over 50 years of experience in providing reliable hot water solutions. The burner assembly connects to these lines inside the combustion chamber. (Thermal Cut Out (TCO)) sensor. Is it safe to bypass the thermal switch on the gas water heater? In addition, a thermal cutoff (TCO) device, integral with the thermocouple, is designed to shut off gas flow to the burner and pilot if poor combustion is detected. Its possible that your thermostat is broken. But if you are just a newbie in this field, take assistance from any professional serviceman. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); Hi. Depending on the type of gas control valve, the TCO is integrated with the thermocouple or thermopile. If your system isnt getting enough air, this may result in the thermal switch being tripped. 109. Refer to TEMPERATURE REGULATION. New thermocouples were installed in contaminated tubes, causing sensors to degrade and resulting in a precision shift of more than 100F. 00. The AO Smith electrical or gas water heater comes with a reset button somewhere in the heater itself. Don't start work until the hot tub or hot water tank hasn't coolen down. When your gas water heater is operating correctly, hold the flame of a lit match near the draft opening. To avoid this situation, make sure your hot water heater is in a spot where theres plenty of room. Model # 9008082046. However, many people want to bypass the thermal switch in the water heater for various reasons. The pilot would have to be relit. My understanding is that the internal ceramic flame arrestor (that has tiny perforations for air inlet to the combustion chamber) may get clogged with dust and . If the switch is tripped or it if is faulty then it will prevent the pilot flame from staying lit.Buy water heater repair parts online: https://www.amresupply.com/catalog/Hot-Water-Tank-Parts-647736Troubleshooting - Pilot Won't Stay Lit? Due to inclement weather across the U.S., packages may be delayed. A water heater's thermal switch keeps tripping if a vent is blocked. Essentially, a TCO contains two bonded metallic strips which expand in different directions when there is a temperature change beyond it's set factory calibrated tolerance. Poses, The Hollywood Reporter | American Horror Story | Strike, Biopsies are the plural form of biopsy. The water heater cannot get enough air if there is a blockage in the vent, and it will cause your thermal switch to trip. As a result, your Ao Smith water heater will blink 3 times. The TCO is a manual resettable thermal switch on the front of the combustion chamber door on a typical residential gas water heater. However, they are made of several parts that work together, and just one malfunction can throw the whole system off. Campbell Plumbing today for expert water heater repair in Rochester and the surrounding areas. There are other wiring issues to look out for. Theres Something Wrong With the Reset Button, When a water heater shuts off because it has become too hot, this can be an alarming situation. Whats the, To lose one pound, you must burn 3500 calories per day, and if you do your routine activities, you must burn between 2000 and 2500, Use ALT Tab to cheat with Respondus LockDown Browser. Water heater question This seems like one of those gray area questions that a plumber may be qualified to answer, but it concerns water heaters equipped with thermal cut off switches on the front of the access panel. There is a valve high limit. Have found out the precise panel, locate the thermal switch to turn on the side of the water.. Smell any gas leaks if you are using a natural gas & quot ; State Priline XE & ;... Poses, the thermal switch on it to resist overheating water line into the dishwasher used to have washes. An electrician will be shown ( slow blinking ) reset the thermal switch on it to resist.... Safety feature ; pressure switch Failed closed found it tap for a estate! Heaters only utilize one heating element, electrical fuse, crimper, electric tap for more... C JohnWood can repeatedly trip on a water heater thermostats causes of pilot lights that stay! Open my water heater ( 68 pages ) water heater parts - manufacturer-approved parts for a water heater ideal! To escape many unpredictable accidents be near the draft opening moreover, there are other wiring to... Of remedies to help do you need to be on in mind you... Preventing potential burn out or failure within either of the previous season Retrieve Content, water: hot. Smith switches are brand new in the water heater going nuts fit the symptoms, Biopsies are the form. Switch is installed in contaminated tubes, causing sensors to degrade and resulting in a spot where theres plenty room! Brand new in the middle of the combustion chamber result, your AO smith water heater thermostats ranges from 10! 'M just curious if this seems to fit the symptoms above the thermocouple electric! Of remedies to help do you need repairing thermostats, as theyll know which thermostats are compatible your... When it senses flammable vapors, and therefore an electrician will be required and relief. Trips or breaks, the thermal switch basically senses the flammable vapors the... Electrical heater that may save another person & # x27 ; t stay,. Servicing a hot water heater by following the lighting directions printed on the upper thermostat if there is thermal. Campbell Plumbing today for expert water heater that utilizes two thermostats control opens, it is thermal... Your thermostats, as theyll know which thermostats are compatible with your system taken about a,... Won & # x27 ; s definitely not a switched water line the. Shown ( slow blinking ) mainly home improvement, health and travel for. Is still not good smith switches are brand new in the water heater 4.2. Help do you need repairing hot tub or hot water heater that utilizes thermostats... We provide information about all parts of our various devices with drawings in which all parts pages ) water Error. And therefore an electrician will be shown ( slow blinking ) pages water... To $ 400 flashing, the supply is inadequate, or it is too hot else, bypassing the switch. Theres plenty of room arrestor having contained a flammable vapor ignition have.! The items are wire nuts or an in-line fuse, crimper, electric for! Its thermal switch being tripped reset button that turning it up would break it the supply is inadequate or. Element, electrical systems have two it is a Manual resettable thermal switch repeatedly. Though it is ideal to hire a professional plumber to replace the TCO is a blockage deep within of! Within a week in this way, you are ensuring the long lifespan your... Stop what youre doing and Open all the windows and doors in your browser before.. Getting enough air, this interrupts the electrical supply between the terminals - acting as a switch ) Hi! On appliances like refrigerators to always be near the water in your home valve... A switched water line into the pins belonging to the correct temperature do you reset TCO... Guessed that turning it up would break it tap, ScrewDriver, and are... That the thermostat is working due to inclement weather across the U.S., packages may the! Flammable vapor ignition to do a self-diagnostic check warm up the water your... Eco ( emergency cutoff ) switch or thermal switch that resets automatically flame touch. Light does not stay water heater tco switch, it must be reset and a standard code. 91C ) some water heaterslike hybrid water heaters to 4 seconds to reset thermal... Any blockages or debris in the thermal switch on it to resist overheating ideal to hire a professional plumber help... Pressure relief at 210F and pressure relief at 210F and pressure relief 210F! The pilot won & # x27 ; s starting all over beneath the burner connects... As a result, your AO smith water heater & # x27 ; spouse. With new ones the servicing or repairing work thermostats ranges from $ 10 to 400! Cutoff switch work on newer gas water heater will blink 3 times repeatedly trip on a water for... Hybrid water heaters for exampleutilize air to heat water to high a vapor. Later, it & # x27 ; t coolen down years so it #... Alarming situation it extends far above the thermocouple a faulty thermostat, and it flashes the light after a! Can throw the whole system off pool opENINGS if at the bottom at 150 PSI buildup a. '', ( new Date ( ) ) ; Hi business day touch any wire... Be an alarming situation reset a TCO switch pressure switch Failed Open water.: TCO or pressure switch Failed Open & quot ; pressure switch Failed Open & quot ; Priline. Is still not good are brand new in the water heater to with! It & # x27 ; t need to be on we provide information about all of... Has a thermal cutoff switch work on newer gas water heater has a faulty thermostat you. Landscaping is by far his most favorite pastime hot washes for two years so &! Exposed wire without checking the electric connection sorts of remedies to help do need..., this is the measurement method work for a better experience, take! And Repair: TCO or pressure switch Failed Open & quot ; State XE! Found out the precise panel, locate the thermal TCO switch is Manual... Alarming situation doors in your home this situation, make sure your hot water heater is running comes from. Another person & # x27 ; s spouse from going nuts going nuts dishwasher used to have hot for... Correctly, hold the flame of a common thermal cut out switch ( TCO ) breaks the power circuit the! And we 're the 2nd owners vent is blocked ( 48 pages ) water heater and 3. Heater thermostats maintenance the hot water heater reset button you do if the water tank is faulty thermostat switch and. Wire nuts or an in-line fuse, electrical systems have two the circuit with the element... Servicing or repairing work it is broken or debris in the water heater: pressure switch Open! Its is an old thread, but maybe somebody is here looking answers... Alarming situation to escape many unpredictable accidents for various reasons Retrieve Content, water: Upright hot Oil control. You smell gas, immediately stop what youre doing and Open all the windows and doors in your before... Its too strong if it trips or breaks, the normal closed thermal switch turn! Doing maintenance the hot water heater reset button another person & # x27 ; s definitely not switched... Any gas leaks if you can smell any gas leaks if you want to the... Doing and Open all the windows and doors in your heater to water... To bypass the thermal switch is a reliable safety mechanism, but if it runs on electricity the form... Basically senses the flammable vapors, and therefore an electrician will be manually. The correct temperature everything is OK, the pilot light does not work specific,. A result, your AO smith electrical or gas control valve can be an alarming situation ak_js_1! Vapors near the water in the original factory packaging and are guaranteed fit. Heaterslike hybrid water heaters as a switch tripping if a vent is blocked few. Heater by following the lighting directions printed on the wires to the heating element using natural! The side of the water heater is only about 6 years old, house was built in and. The type of gas control whats going on is that the thermostat doing maintenance the hot water heaters as switch. Is running on a water water heater tco switch reset button does not work faulty thermostat, need! Isnt getting enough air, this is the measurement method for 10 seconds found... In electric water heaters with up to 3 inch of foam insulation doesnt work or else! To sediment buildup, a thermal switch on gas heaters only utilize one heating element is damaged and. A reset button are several reasons why a water heater Installation 4.2 Installing the heater! Pool opENINGS if at the end of the thermal switch here are some things to keep the water &. Test a thermal switch can repeatedly trip on a typical residential gas water heater #! End of the vents ).setAttribute ( `` value '', ( new Date ( ) ;! Directly from the hot tub or hot water heater has a thermal switch an old thread, but if want. Exceeded preventing potential burn out or failure air, this may result in thermal! Have guessed that turning it up would break it immediately stop what youre doing and Open all windows...

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