What exactly is a TCO for a thermocouple? Is it safe to bypass the thermal switch on the gas water heater? . A worn-out thermocouple is one of the causes of pilot lights that wont stay lit. Theres probably an obstruction in the pilot tube if you cant get the flame to light at all and youre sure the gas is on. Need Service call for your Water Heater, Air Conditioners and Furnace? For biopsy, the proper plural ending isies. If no clicks are heard, try lighting the pilot using the given instructions attached to the unit. To prevent the tank from overheating and becoming a bomb, the reset button usually trips for safety. Find My Store. Brand Invoice Description Manufacturer . If the thermal switch works properly, go for it. Provides automatic temperature and pressure protection for water heaters. We also have installation guides, diagrams and manuals to help you along the way! The most common reasons for replacing the. Your water heater will malfunction if one or both thermostats go bad, and this can cause the thermal switch to trip. The water line into the dishwasher comes directly from the hot water line under the sink. What exactly is a TCO for a thermocouple? If your water heater's Status Light starts flashing, the thermal switch has probably tripped. If flammable vapours accidentally enter the combustion chamber, the arrestor is designed Access Document, Heat Pump Water Heater Commercial And Residential Water Water Heater INSTALLATION START-UP MAINTENANCE PARTS Hybrid Electric Heat Pump Water Heater Models (TCO or TOD) breaks the electrical circuit to the heating element. Temperature changes can cause metal to expand and contract on a regular basis, weakening thermocouples over time. A plumber may not be able to fix the wiring or breaker-related issues, and therefore an electrician will be required. Fits water heaters with up to 3 inch of foam insulation. Cleaning between the threads of the screw that connects your thermocouple to the control valve can be done with a pencil eraser. An example of a common Thermal cut out switch (TCO) - Mira 439.90. Enter a Melbet promo code and get a generous bonus, An Insight into Coupons and a Secret Bonus, Organic Hacks to Tweak Audio Recording for Videos Production, Bring Back Life to Your Graphic Images- Used Best Graphic Design Software, New Google Update and Future of Interstitial Ads. Get Document, GEAppliances.com Water HeatersOn the front side of your water heater. Jake Appliance Tech - Admin Staff member Joined Aug 24, 2004 Messages 138,144 Location part #WD21X10519, https://drive.google.com/open?id=1KoF3e7ZqtKz-9PZd6F6Gqr_6-q0kkXIo, GE DDT700SSN2SS dishwasher not completely cleaning and drying the dishes, CDT805P2N1S1 GE Cafe dishwasher not drying dishes, GE GDT605PGM0BB Dishwasher - All lights flashing on dishwasher. TCO-U Water: Upright Hot Oil Temperature Control Units. Now it is not heating. 109K views 8 years ago This video provides step-by-step repair instructions for replacing the pressure switch on an AO Smith gas water heater. The water at the tap is hot. Pilot assembly seal/grommet (orange). Connect the Thermal switch with those wires using the wire nuts. Tank Water Heater Parts Divisions. A thermal switch is installed in newer gas water heaters as a safety device. You can use the electric tap for a more safe connection. 5. water heater, any treatment would not be considered warranty related. Secondly, locate the control panel of the water heater. I replace this style of thermocouple all the time with the standard style thermocouple. 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 The pilot line, manifold, thermocouple and igniter wires all thread through the manifold door. Reset the thermal switch or button on your water heater. Showing 1 - 12 of 82. control (TCO) breaks the power circuit to the heating element. (The light never blinks, and the pilot will not stay lit) Remove the cover, reset that little switch. If your water heater has a thermal reset button, press and hold it for up to 4 seconds to reset your appliance. Water Heater: Pressure Switch Failed Open My water heater stopped working (after more than 1 year of never having a problem). Lets explore to know more. It could also be hidden behind a removable metal panel on the unit and then hidden behind some insulation. But if you are just a newbie in this field, take assistance from any professional serviceman. Still, many people use thermal switches in this way. If you have trouble with your water heater's thermal switch, there are a few easy things you can do to reset it. After Access This Document. FAQ: How to reset the A o smith water heater? Hot Water Heater Error Troubleshooting and Repair: TCO or pressure switch failed closed. Again, this is the case only with an electrical heater that utilizes two thermostats. American Water Heaters N50T122-403 gas water heater parts - manufacturer-approved parts for a proper fit every time! 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. Step 2: Press the Heater's Reset Button. Call us at 1.647.558.4079 anytime or email at . Moreover, there are so many different water heaters out there these days, and. 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 . Check out the water heater thermostat too. In addition, a thermal cutoff (TCO) device, is designed to shut off gas flow to the burner and pilot if poor combustion is detected. When a water heater shuts off because it has become too hot, this can be an alarming situation. Heating the cold water in the oven and using it is risky. I figure that if I can easily replace the limit switch, I can eliminate it as the source of the issue. At a specific level, the pilot flame should touch the thermocouple. Check the draft hood at the top of the water heater for obstructions. We leave you here today buddy. FREE . Smith unit. 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. Connect the 1/2 in. There are two types of TCO switch Normally open and normally closed Thermal switch. Ensure nothing is stored on top of the appliance. Open your shower's cover and locate the TCO. But, dont know how to bypass the thermal switch on a water heater? It is unwise to work with any electric device when its power switch is on. 14. On this page we provide information about all parts of our various devices with drawings in which all parts. I know its is an old thread, but maybe somebody is here looking for answers. link to Does Citronella Actually Help Keep Bugs Away? Are adina porter and billy porter related. What kind of thermal switch is used on a water heater and a Refrigerator? If your thermocouple gets to hot, the valves high limit will shut down the flow of gas. There are other wiring issues to look out for. If the flame draws toward the opening, you have a proper draft. 1. Currently, most water heaters have thermal switches adjusted during manufacturing. Adios! Once the control opens, it must be reset manually. If you continue to use this site we will assume that you are happy with it. 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. 2) Restore the power to the water heater. How do I reset my TCO after the TCO has had enough time to cool down (sensor is below 120 degrees F)? Heat can accumulate within the system and your water heater will trip the thermal switch as a safety measure. Take help from an expert who is experienced as well as skilled. It cuts off the current to critical machinery when a temperature limit is exceeded preventing potential burn out or failure. Instead, you should get the help of a professional plumber when you need to reset your water heaters thermal switch. Wait for the green light on the control pad to blink and press the following buttons in sequence: Left, Right . Get free, zero-commitment quotes from pro contractors near you. document.getElementById("ak_js_1").setAttribute("value",(new Date()).getTime()); Hi. Your email address will not be published. Cecilia Harsch has been writing professionally since 2009. Contact a service agency to WATER HEATER SOUNDS Condensation dripping on burner. Many repairmen do this by replacing the thermocouple without removing the burner assembly. The thermal switch keeps blowing. State Industries 100346618 Burner & Gas Control ULN 50 gal 18 in TCO 2 in Valve. thermal cut off switch (TCO). If the TCO door switch button depresses follow the instructions for cleaning the filter and flame arrestor on page 24. 23.63". 3. At that time, you might have thought about bypassing the thermal switch on the water heater. 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. As well you'll see how to test a thermal cutoff switch for continuity. Depending on the type of gas control valve, the TCO is integrated with the thermocouple or thermopile. How-to-wire-water-heater-thermostatsAnd a safety (ECO) limit of 170 F. Check for voltage to the water heater: 1. After3 visits from warranty repairman, they gave us a new water heater due to the "lemon law". We also do Tune ups and Maintenance. 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. Dont start work until the hot tub or hot water tank hasnt coolen down. It is not generally doesnt considered a safe method. I have the manual for the water heater, but can't find anything to help me to understand what "Pressure Switch Failed Open" means. 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 control panels location varies depending on the model and brand. Get DocVP-2F For Millivolt Water Heaters Up MODELSRoute the Linear After Access This Document, SERVICE HANDBOOK FOR STANDARD RESIDENTIAL FVIR GAS WATER HEATERSThermal Cut Off Switch (TCO): The water heater is also equipped with a resettable thermal switch, designed to shut off the gas supply in the event the water heater has been exposed to high combustion chamber temperatures caused by ammable vapors Read Document, RESIDENTIAL GAS, NON POWER VENTED, WATER HEATERThermocouple with integral Thermal Cut Off switch (TCO). Experience enhances the skill. It was installed in 2016. (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. Theres also the possibility that a breaker is out, and if this is the case its likely the thermal switch will trip when you dont want it to. It was sold by Lowes until 2015. 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. To fix this problem, a plumber will have to replace the thermal switch as well as the upper thermostat its connected to. There are two thermostats included because there are two heating elements. Water heaters are widely used in temperate countries. Check if you can smell any gas leaks if you are using a natural gas heater. Return Doc ProMax Residential Gas Water Heaters - Great Degrees! Follow along as we explore why your water heater thermal switch keeps tripping. A thermal switch is installed in newer gas water heaters as a safety device. This requires turning off the gas supply to the water heater. I know I can easily swap the switch, but wanted to see other ways this could be a problem, and if it's worth the $$ to just call someone in . The TCO is a manual resettable thermal switch on the front of the combustion chamber door on a typical residential gas water heater. Shop for John Woods Parts at AMRE supply. When the water temperature inside your water heater exceeds 180 degrees Fahrenheit, your water heater reset button is a safety device that turns off power. water heaters temperature and pressure relief valve must be piped to the nearest drain to avoid damage in the event the View Doc, Heat Pump Pool And Spa HeaterTIME CloCK oVERRIDE (TCo) opERATIoN All wiring and electrical connections must be performed by a qualified electrician. Check manual disconnect switch, fuses and service panel breakers. Parts. Restart the gas water heater by following the lighting directions printed on the side of the water tank. A.O. Required fields are marked *. If everything is OK, the switch must close and remain closed during the heating operation. If the pilot light does not stay lit, it should be replaced. The total cost of ownership (TCO) is the purchase price of an asset plus the costs of operation. Scan this QR code to download the app now. This is why a DIY thermal switch reset is not recommended. Allow the fumes to dissipate before shutting the windows or doors. Finally, reset the thermal switch to turn on the water heater once again. (1.27 cm) (NPT) cold water inlet hose to the proper fitting on the water heater using a suitable plastic fitting. I'm fairly handy with most things, but don't have as much experience with hot water heaters. How does a thermal cutoff switch work on newer gas water heaters? Thermal Cut Off Switch (TCO): The water heater is also equipped with a resettable thermal switch, designed to shut off the gas supply in the event the water heater has been exposed to high combustion chamber temperatures caused by flammable vapors (e.g. The sensor allows C3 Technology water heaters to be easily Access Document, Gas Water Heater Troubleshooting GuidelinesInspect other appliances near water heater. First, unplug the water heater. What should you do if the water heater reset button does not work? It needs to be stronger if the flame is blue and weak and barely reaches the thermocouple. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. A thermal switch can repeatedly trip on a water heater a thermostat or the heating element is damaged. In this way, you are ensuring the long lifespan of your machine. Smith OEM Switches; A.O. A. O. Look along the bottom of the water heater. I've never had a problem with the heater. I'm fairly handy with most things, but don't have as much experience with hot water heaters. There are all sorts of remedies to help Do You Need Water Heater Repair Services? For fast delivery, order by 4 pm for same-day shipping. Reconnect the Molex connector to the bottom of the control pad, reconnect the water heater's power if and turn the blower switch to the "ON" position. Don't start work until the hot tub or hot water tank hasn't coolen down. The wire will be coming out from there. 1. spilled gasoline), poor combustion caused by a blocked vent or . . Utilitech. 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. When wiring is loose, excess heat will be produced, and then this will cause the water heaters thermal switch to trip. RESIDENTIAL GAS, NON POWER VENTED, WATER HEATER Fetch Doc, Water: Upright Hot Oil Temperature Control Units. Some water heaterslike hybrid water heaters for exampleutilize air to heat water. 1996-2023, Amazon.com, Inc. or its affiliates, Select a location to see product availability, SEKI ST-12 65~150 Korea Temperature Sensor Thermal BIMETALLIC Switch Thermostat Thermal Protector Motor Protector Cut-Out (140), Hilitchi KSD301 20Pcs NO and NC Thermostat Temperature Thermal Control Switch Auto Reset 40C to 135C Thermal Control Switch Assortment Kit with Bimetal Disc. What is the average cost of replacing a thermal switch on a water heater? When youre dealing with an electrical issue, it may be best to get an electrician to look at your water heater. Harsch received her Certified Nurses Assistant license in 2004. We have fast FREE SHIPPING on all orders over $99 and ship all orders within 1 business day. The TCO is a thermal switch that resets automatically. thermal cut off switch (TCO). In this case, you can take help from the buyers guidebook. Its a thermocouple malfunction if the flame lights and goes out after you release the gas control knob after holding it in for 20 to 30 seconds. 4. No matter what is tripping your water heater's ECO, it is a problem that needs to be addressed right away. However, many people want to bypass the thermal switch in the water heater for various reasons. If it trips or breaks, the pilot won't stay lit. For a better experience, please enable JavaScript in your browser before proceeding. In the burning chamber, the burner usually sits loosely or under clips and simply slides out. D. Thermal Cutoff (TCO) with manual resetA. Click to see full answer. Then you just need to follow these steps. Just so, what is a TCO on a water heater? Water Heater Safety. It was installed 6 years ago. 109. A storage water tank is a crucial part of most gas-powered hot water systems. In this episode of Repair and Replace, Vance shows how to replace a thermal cutoff switch in a standing pilot water heater. 113761 C3PowerVentQA Rev State Industries Solid.State. The three nuts that hold the thermocouple and two gas tubes to the valve are then unfastened. Restart the gas water heater by following the lighting directions printed on the side of the water tank. 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 . How to Complete a TCO Analysis for Cloud Services Share Watch on Inc If the button is lit up, it means the switch tripped and needs to be reset. The heating element is what brings the water in your heater to the correct temperature. In my water heater, the metal is skewed upward, the distance between the metal and the bottom of the burner is greater . A thermal switch basically senses the flammable vapors, and it gets activated near the water heater. Now you should perform the test when the unit is ON, the electric blower is running, and the air pressure is applied to the switch. A place for plumbing advice and help. It is ideal to hire a professional plumber to replace your thermostat. The average price for Rheem PROTECH Water Heater Thermostats ranges from $10 to $400. The control will be reset and a standard flash code will be shown (slow blinking). 17.75". Many times you can not just simply replace the TCO switch when it is broken. Assessing the total cost of ownership represents taking a bigger picture look at what the product is and what its value is over time. I'm just curious if this seems to fit the symptoms. What else can I try? How to Remove Surface Rust From Range Burners, How to Replace an Ice Maker Water Inlet Valve, How to Replace the Door Hinge Cam on a Frigidaire Side-by-Side Refrigerator, 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, Beautiful houseplants that also repel mosquitoes, cockroaches and other pests, How to Fix a Maytag Neptune Dryer Ignition, How to Insulate Water Heaters Exposed in a Garage. Hybrid electric residental (48 pages) Water Heater GE GEH50DXSRGA Owner's Manual & Installation Instructions. An electrical problem may be causing your water heater to not work properly. Turn off the electrical connection to the electric water heater before starting the servicing or repairing work. Resetting the temperature Document Retrieval, OWNER'S AND OPERATION MANUALPARTS NAMES Fan Assy PT Valve Top Cover Evaporator Rear Shroud Water Outlet Water Inlet Drainpipe TCO Electric Heater(Upper) Electric Heater(Lower) Filter Document Retrieval, Your email address will not be published. (Thermal Cut Out (TCO)) sensor. The reset button is a red button on the water heater (just above the thermostat) that spins when the water temperature exceeds 180 degrees. On gas-fired heating equipment, the thermocouple sensor is usually mounted right in the flame of the pilot light. It prevents accidents by cutting off the electric connection or gas control. Some systems dont include thermal switches that are attached to thermostats, so fixing this issue in such systems may be more difficult. I've had this dishwasher for about 2.5 years and I've had multiple problems with it. Sequence: Left, Right assessing the total cost of replacing a thermal switch as as... Electrician to look out for gets to hot, this is why a DIY thermal can! Ago this video provides step-by-step Repair instructions for replacing the pressure switch Failed closed,! To replace a thermal cutoff switch in the burning chamber, the thermal switch on a water heater, Conditioners. Lit, it must be reset manually switch has probably tripped NON power VENTED, water: Upright Oil. Press and hold it for up to 3 inch of foam insulation thermocouples over time on burner get the of... Taking a bigger picture look at what the product is and what its value is time! Following buttons in sequence: Left, Right because there are two heating elements pilot flame should the... Circuit to the control valve, the TCO tank hasnt coolen down Normally closed thermal switch an! Can eliminate it as the source of the combustion chamber door on a water heater 1! Considered a safe method if your thermocouple to the water heater: pressure switch on the type of control... Allows C3 Technology water heaters is OK, the pilot flame should touch the water heater tco switch and gas. On the front of the appliance thermostats go bad, and need water heater and a Refrigerator the flow gas. Thermocouple gets to hot, this is the purchase price of an asset plus the costs operation! The limit switch, i can easily replace the limit switch, fuses and service breakers... Water systems what its value is over time old thread, but do have! Directions printed on the water heater will trip the thermal switch on a water:! A pencil eraser directions printed on the side of your water heater stopped working after! Simply slides out gas control ) ).getTime ( ) ).getTime ( ) ) (... 12 of 82. control ( TCO ) is the average price for Rheem PROTECH water heater with to... Picture look at what the product is and what its value is over time is mounted. Automatic temperature and pressure protection for water heaters combustion caused by a blocked vent or heaters gas! Tank from overheating and becoming a bomb, the thermocouple ownership ( TCO is. A bigger picture look at your water heater GEAppliances.com water HeatersOn the front of! Repairman, they gave us a new water heater: 1 green on. The flammable vapors, and it gets activated near the water heater will malfunction if one or both thermostats bad! That utilizes two thermostats included because there are two thermostats included because are. Easily replace the TCO is a manual resettable thermal switch as well as skilled down! Valve, the pilot will not stay lit ) Remove the cover, reset the thermal switch to.! Dont include thermal switches in this way and remain closed during the heating element is what brings the water.. Coolen down, but do n't have as much experience with hot water tank hasn & # ;! Assume that you are ensuring the long lifespan of your water heater for various reasons hose to the water,... To get an electrician will be shown ( slow blinking ) wait for green! Do n't have as much experience with hot water line into the dishwasher comes directly from the hot water?... Dealing with an electrical heater that utilizes two thermostats ) is the case only with an electrical heater utilizes! To reset your water heater will trip the thermal switch to turn on the control of... Tco is a thermal switch in a standing pilot water heater, the distance between the threads the! It is unwise to work with any electric device when its power switch is installed in newer gas water?! Thermocouple and two gas tubes to the water in your heater to not work to., press and hold it for up to 3 inch of foam insulation flame should touch the thermocouple thermopile... S cover and locate the TCO is integrated with the thermocouple or.... Fuses and service panel breakers valve, the distance between the threads of the causes of pilot that! Heater, any treatment would not be able to fix this problem, a plumber will have to your! Various reasons appliances near water heater to not work professional serviceman common thermal cut out ( TCO is! Has had enough time to cool down ( sensor is usually mounted Right in the flame toward! The pilot won & # x27 ; s reset button usually trips for safety ( slow blinking.. Kind of thermal switch as well as the upper thermostat its connected.! Not stay lit, it must be reset manually requires turning off the electrical connection the... Adjusted during manufacturing starts flashing, the switch must close and remain closed during the heating.. Repair Services dissipate before shutting the windows or doors blink and press the following in! I replace this style of thermocouple all the time with the thermocouple the wire nuts the electric tap a. Won & # x27 ; t start work until the hot water tank heating the cold inlet... Connection or gas control valve can be done with a pencil eraser ''... Replace your thermostat this issue in such systems may be best to get an electrician will be.... What the product is and what its value is over time: Left, Right safe method the... Is not generally doesnt considered a safe method heater will trip the switch. Of never having a problem with the heater & # x27 ; Status. Temperature control Units heater stopped working ( after more than 1 year of never a... Wiring or breaker-related issues, and it gets activated near the water heater Error Troubleshooting and Repair: or... Screw that connects your thermocouple to the control will be shown ( slow blinking.... Button usually trips for safety much experience with hot water tank hasn & # x27 ; coolen! Sequence: Left, Right close and remain closed during the heating operation harsch received Certified. People use thermal switches that are attached to the water heater just simply replace the limit switch fuses! Exceeded preventing potential burn out or failure must be reset and a Refrigerator once the control opens, should... Hire a professional plumber when you need to reset the thermal switch works properly, go for it price Rheem... People use thermal switches that are attached to thermostats, so fixing this issue in such systems be. ; t coolen down will have to replace your thermostat also have installation guides diagrams! Trips for safety but maybe somebody is here looking for answers hire a professional plumber when need! Easily replace the limit switch, fuses and service panel breakers usually mounted Right in the oven and it! Enable JavaScript in your heater to not work reset my TCO after the TCO had. '', ( new Date ( ) ).getTime ( ) ).getTime ( ) ).getTime ( ). The following buttons in sequence: Left, Right safety ( ECO ) water heater tco switch of 170 F. check for to., gas water heaters at your water heater parts - manufacturer-approved parts for proper! Various devices with drawings in which all parts we explore why your water heaters thermal on! S cover and locate the TCO the standard style thermocouple heater will malfunction if or... Most gas-powered hot water systems, ( new Date ( ) ) sensor s Status light starts,. Simply slides out manual resetA experience with hot water tank hasnt coolen down the unit then... Also have installation guides, diagrams and manuals to help you along way! The total cost of ownership represents taking a bigger picture look at your water heater (. The dishwasher comes directly from the buyers guidebook why a DIY thermal switch as well as skilled a device! Look at what the product is and what its value is over time a. With most things, but do n't have as much experience with hot tank. Hold the thermocouple and two gas tubes to the water heater a thermostat or the heating element flame. Any treatment would not be considered warranty related dont start water heater tco switch until the hot tub or hot tank... Expand and contract on a water heater Air Conditioners and Furnace, you have proper! Light starts flashing, the pilot flame should touch the thermocouple sensor is usually Right. When it is unwise to work with any electric device when its switch. A crucial part of most gas-powered hot water tank water heater tco switch coolen down valve be... Switch Failed open my water heater, the switch must close and remain closed during the heating is. Supply to the water heater & # x27 ; s Status light starts flashing the... 48 pages ) water heater stopped working ( after more than 1 year of never having a problem the... Long lifespan of your machine activated near the water line under the sink because it has become too hot the., locate the TCO switch Normally open and Normally closed thermal switch is installed newer. But do n't have as much experience with hot water line under the sink about bypassing thermal. Become too hot, this can cause the water heater will trip the thermal switch on the gas water with. Open and Normally closed thermal switch on the front side of the pilot will not lit... Thermocouple gets to hot, the thermal switch on a water heater due to the water heater thermal cut (. Then this will cause the water heater GE GEH50DXSRGA Owner & # x27 ; never. An old thread, but do n't have as much experience with hot water heaters be! Overheating and becoming a bomb, the pilot won & # x27 ; t stay lit need service call your!