Water heaters are essential in modern homes, and luckily, they are usually easy to rely on. Moreover, there are so many different water heaters out there these days, and. Shut off the gas supply. The AO Smith electrical or gas water heater comes with a reset button somewhere in the heater itself. We also have installation guides, diagrams and manuals to help you along the way! Does the water heater switch need to be on? 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." RESIDENTIAL GAS, NON POWER VENTED, WATER HEATER Fetch Doc, Water: Upright Hot Oil Temperature Control Units. Look along the bottom of the water heater. Temperature relief at 210F and pressure relief at 150 PSI. WATER TOO HOT Thermostat set too high. I'm just curious if this seems to fit the symptoms. If the pilot light is burning, take a look at the color of it. Again, this is the case only with an electrical heater that utilizes two thermostats. AO, model G6-PVS5040NV. Even though the thermostat is working due to sediment buildup, a lack of regular maintenance can cause issues. A worn-out thermocouple is one of the causes of pilot lights that wont stay lit. Are there any safeties that, once tripped, tell the dishwasher to not use the element? Here are some things to keep in mind when you are repairing or servicing a hot water heater . Refer to TEMPERATURE REGULATION. Specifically, if you have aluminum wiring and copper wiring in your water heater, you may utilize a special plug connector to connect these wires. What is the proper plural ending for a biopsy? A gas leak can be very dangerous, and youll want to get experts out to your property to deal with this ASAP. Its also known as the ECO (emergency cut off) or high limit switch.. The control panel's location varies depending on the model and brand. I have to keep the water temp on LOW in order for the switch not to trip. Scan this QR code to download the app now. The thermal switch keeps blowing. Restart the gas water heater by following the lighting directions printed on the side of the water tank. Push the small button in the middle of the thermal switch to reset it. Do not advertise or try to compare pricing. Some water heaterslike. However, many people want to bypass the thermal switch in the water heater for various reasons. If no clicks are heard, try lighting the pilot using the given instructions attached to the unit. A thermal switch can repeatedly trip on a water heater a thermostat or the heating element is damaged. How-to-wire-water-heater-thermostatsAnd a safety (ECO) limit of 170 F. Check for voltage to the water heater: 1. 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. Required fields are marked *. Press both the left and right buttons on the control pad at the same time. Its possible that metal fatigue is causing thermocouples to give out unusual readings. Copyright 2023 HeaterTool | Powered by HeaterTool, How To Tell Which Water Line Is Hot and Cold On Water Heater, How To Tell Which Breaker Is For Hot Water Heater. Those rarely need replacement as they are resettable by pushing in the black button. Water heater would try to start up, but wouldn't ignite. I've drained and flushed it thoroughly . Besides, a thermal switch protects your appliances or water heating machines from the possible damage of excessive electricity flow. 4.3 4.3 out of 5 stars (101) $164.00 $ 164. But if you are just a newbie in this field, take assistance from any professional serviceman. I recommend you replace the thermal switch Instead of bypassing it. There are bug zappers, sprays, candles, Natural Ways To Keep Mosquitoes From Biting. Cecilia Harsch has been writing professionally since 2009. Call us at 1.647.558.4079 anytime or email at . On the contrary, the Normal closed thermal switch is used on appliances like refrigerators. If the button is lit up, it means the switch tripped and needs to be reset. What is a thermal switch on a water heater? My water heater has been working fine since I replaced the thermocouple (with a TCO) with a new one (without a TCO). Excess heat will build up within the system, and youll need to clean one or both of the vents to increase the airflow. if this seems to fit the symptoms. Your email address will not be published. It cuts off the current to critical machinery when a temperature limit is exceeded preventing potential burn out or failure. Still, many people use thermal switches in this way. Sediment or calcium in bottom of heater tank. Manage Settings I'm fairly handy with most things, but don't have as much experience with hot water heaters. Turn off the electrical connection to the electric water heater before starting the servicing or repairing work. Filters. 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. Find the thermal switch on the manifold door. 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. 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. My name is Julio Harris. Get genuine A.O. You can easily buy an international standard thermal switch for between 120 USD to 200 USD. What's the price range for Rheem PROTECH Water Heater Thermostats? Otherwise, It can cause potential accidents. heater switch improvement kit thermostat,limit w/open slots tco-thermostat switch, mom dpst trans green switch, mom spst trans red 28296.0002 door 23720.0001 water strainer assy,(coarse) 23721.0001 screen, strainer/flow-coarse Return Document Need Service call for your Water Heater, Air Conditioners and Furnace? We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. 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. What does total cost of ownership ( TCO ) mean? There must be at least 3 inches of clearance around all sides of the water heater. Contact a service agency to WATER HEATER SOUNDS Condensation dripping on burner. 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. To reset the thermal switch, press the small button in the middle. Answer: The Normal open thermal switch is used on the tankless water heater, the gas heater, or the heat exchanger. Hybrid electric residental (48 pages) Water Heater GE GEH50DXSRGA Owner's Manual & Installation Instructions. The pilot would have to be relit. Save my name, email, and website in this browser for the next time I comment. On this page we provide information about all parts of our various devices with drawings in which all parts. 23.63". Shut off power to your water heater, let it cool down, and clean the vents. Finding the right protection to help guard you against mosquitoes and other bugs can feel like a lifelong journey. First, unplug the water heater. In the burning chamber, the burner usually sits loosely or under clips and simply slides out. The hot water heater does not have these problems. Now its time to clean the flame trap. A.O. I was getting a 3 code flash on the Honeywell control board which gave the code of, " TCO or Pressure Switch Open". Hi, I Bought an American Standard Water heater and within 3 months the thermal fuse kept blowing. Open your shower's cover and locate the TCO. A water heaters thermal switch keeps tripping if a vent is blocked. 500 Tennessee Waltz Parkway, Ashland City, TN 37015 Retrieve Full Source, Residential Gas Water Heaters A. O. Smith CanadaInto the water heater base. The price depends on the quality of the normal thermal switch. Inc document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Read These Instructions Thoroughly Before Starting , Models: AE115, AE125, RP17PT, RP27PT Energy Efficient , PARTS NAMES Fan Assy PT Valve Top Cover Evaporator Rear Shroud. Therefore, electrical heaters are twice as likely to experience element-related issues. 3 flashes = TCO or pressure valve error OPEN. Having an in depth knowledge over HVAC (Heating and/or cooling), my services will work wonders for you. The water at the tap is hot. A plumber may not be able to fix the wiring or breaker-related issues, and therefore an electrician will be required. The water at the tap is hot. Check the draft hood at the top of the water heater for obstructions. She attended Tarrant County College and studied English composition. The thermocouple is a thermoelectric device, whereas the thermopile is a thermal energy converter that converts thermal energy into electrical output. I've had this dishwasher for about 2.5 years and I've had multiple problems with it. Now turn the heater Switch on and check the connection. A thermal switch is installed in newer gas water heaters as a safety device. How does a thermal cutoff switch work on newer gas water heaters? There are two types of TCO switch Normally open and normally closed Thermal switch. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. 1 What does TCO stand for on a water heater? A. O. Smith unit. Water Heater Safety. I work for a real estate company with duplex units. 1. Campbell Plumbing today for expert water heater repair in Rochester and the surrounding areas. Use a multimeter to check the electrical connection on the wires. TCO-U Series Hot Oil TCU With rapid response to all your needs for process heating and cooling, our hot oil TCO-U Series high Immersion heater with IEC contactors View This Document, Through-The-Wall Gas Water Heaters SERVICE MANUALPressure Switch Testing and Replacement 18 III Blower water heater and its components for possible damage. Press the small reset button in the center of the thermal switch. If it has tripped the burner may be lacking fresh air. The items are wire nuts or an in-line fuse, electrical fuse, crimper, electric tap, ScrewDriver, and safety tools. Rear of Heater Front of Heater AE125/RP27PT MODULE Top View C B Note: only relevant wiring shown allow water to flow through heater. 3. Locate the manifold doors thermal switch. A professional plumber will help you replace your thermostats, as theyll know which thermostats are compatible with your system. In my water heater, the metal is skewed upward, the distance between the metal and the bottom of the burner is greater . TCO-U Water: Upright Hot Oil Temperature Control Units. Does a broken thermal switch mean thermostat replacement is necessary? The TCO is a manual resettable thermal switch on the front of the combustion chamber door on a typical residential gas water heater. My natural gas "State Priline XE" hot water heater is blinking the error above. 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. link to Does Citronella Actually Help Keep Bugs Away? It should be on top of the heating tank. Continue with Recommended Cookies. What kind of thermal switch is used on a water heater and a Refrigerator? Your system likely has two thermostats if it runs on electricity. It is mainly an electric device, though it is not any heating element. 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. The average water heater has a vent at the top and bottom of the unit. It is a great way to escape many unpredictable accidents. Your email address will not be published. You may be able to spot the blockage if you inspect either vent, but blockages are often lodged deeply. 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. Got a "TCO or Pressure Switch Failed Open" on an AO Smith GPVL-50-200. Step 3. Check if you can smell any gas leaks if you are using a natural gas heater. It was installed 6 years ago. Poses, The Hollywood Reporter | American Horror Story | Strike, Biopsies are the plural form of biopsy. A pilot flame with a yellow tip should cover 1/2 inch at the thermocouple tips end. There is NO such thing as a "fire fusable link" to be used incase of a fire under your water heater. There are all sorts of remedies to help Do You Need Water Heater Repair Services? However, they are made of several parts that work together, and just one malfunction can throw the whole system off. 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. The heating element is what brings the water in your heater to the correct temperature. It is unwise to work with any electric device when its power switch is on. This allowed the gas to flow long enough for the thermocouple to heat up and generate some electrical current to return to the gas valve. We and our partners use cookies to Store and/or access information on a device. If your heater has a faulty thermostat, you need repairing. I've never had a problem with the heater. Harsch received her Certified Nurses Assistant license in 2004. In this way, you are ensuring the long lifespan of your machine. As a result, your Ao Smith water heater will blink 3 times. It is ideal to hire a professional plumber to replace your thermostat. thermal cut off switch (TCO). Water temperature in excess of TCO (Temperature Cut Off) limit The gas control immediately turns off pilot Fetch Here, 113761 C3PowerVentQA Rev State Industries Solid.State.Vapors inside the water heater. Wait for the green light on the control pad to blink and press the following buttons in sequence: Left, Right . Push and release the button once youve found it. An example of a common Thermal cut out switch (TCO) - Mira 439.90. Stocking the largest selection of appliance parts, heating, plumbing, lighting, and janitorial supplies, AMRE ships almost anywhere in Canada within 24 - 48 hours. Step 2. Then you just need to follow these steps. Remove the old thermocouple and test it to see how long you require. 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. If you have trouble with your water heater's thermal switch, there are a few easy things you can do to reset it. It will open the door when it is activated. Water Heater Pressure Relief Valve. Cleaning or Flushing a Water Heater Tank The nightshade family, according to WHFoods, includes, Billy Porter has the appearance of Adina Porter, but he is not related to her. Fire Protection; Pipe, Valves, & Fittings; Pipe Supports; Plumbing; Finish; Premier Bath & Kitchen; Premier Pump . This is beneath the burner on the inside of the combustion chamber; youll need to turn off the gas before you do this. 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? The best-rated product in Rheem PROTECH Water Heater Thermostats is the LP Gas Control Thermostat. Expert help is available online, over the phone or in person at one of the many locations across Canada.Connect with AMRE SupplyWebsite - https://www.amresupply.com/Facebook - https://www.facebook.com/amresupplyTwitter - https://twitter.com/amresupplyInstagram - https://www.instagram.com/amresupplyGoogle Plus - https://plus.google.com/+amresupplycanada Depending on the type of gas control valve, the TCO is integrated with the thermocouple or thermopile. Buy online or pick it up in-store today! Remove the screws holding the manifold assembly door to the side of the water tank. Otherwise, you might get electrically shocked from the loose wiring. This. If your system isnt getting enough air, this may result in the thermal switch being tripped. If the plug connector is not in place, the two metals may cause the water heaters breaker to trip. Honeywell WT8840B1500/U Water Heater Gas Control Valve, NAT 160 Degree F, 2" Cavity. Assessing the total cost of ownership represents taking a bigger picture look at what the product is and what its value is over time. 109. After Access This Document. Light the pilot light, and it flashes the light after just a few seconds. Green TCO Switch: $54.05: 315358-005: TCO SAFETY SWITCH VIOLET PURPLE: $54.05: 315358-007: TCO SAFETY SWITCH PINK: $26.10: 315358-008: TCO SAFETY SWITCH RED: $27.27: 317716-054: . 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. So, what should you do when your water heater thermal switch keeps tripping? Thermal switches are used in power supplies in case of overload, and also as thermostats, and overheat protection in some heating and cooling systems. TCO-U Water: Upright Hot Oil Temperature Control Units. If the thermal switch works properly, go for it. Hot Water Heater Error Troubleshooting and Repair: TCO or pressure switch failed closed. The water heater cannot get enough air if there is a blockage in the vent, and it will cause your thermal switch to trip. Water Heater: Pressure Switch Failed Open My water heater stopped working (after more than 1 year of never having a problem). The water line into the dishwasher comes directly from the hot water line under the sink. When a water heater shuts off because it has become too hot, this can be an alarming situation. Your email address will not be published. A damaged, bent, or filthy thermocouple is the most common cause for your water heaters pilot light to go out. Journeyman Service Techni. When needed, you get hot water at the temperature you set. My external (LDO) air inlet screen never seems to get really dirty. Read These Instructions Thoroughly Before Starting , TB116- Flameguard Pilot Outage Checklist Rev C JohnWood. 17.75". 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. Resetting of the temperature limiting controls should be done by a qualified service technician. Water Heater Gas Valve Replacement Watch on 4. Its too strong if it extends far above the thermocouple. Do not use a metal tool or a screw-driver to press the TCO switch contact. Water heaters have a metal casing that is generally durable, but they can suffer damage. Even if you do not hear the thermal switch click, try lighting the pilot using the instructions on the water heater's label. The pilot line, manifold, thermocouple and igniter wires all thread through the manifold door. Return Doc, ProMax Residential Gas Water Heaters Great Degrees! This is made more expensive by the fact that the will typically need to be switched on for around two hours to provide hot water. Vacuum the inside of the combustion chamber, paying particularly close attention to the bottom of the chamber. When youre dealing with an electrical issue, it may be best to get an electrician to look at your water heater. I put my multi-meter into the pins belonging to the circuit with the heating element and it reads 16 ohms. The TCO is a thermal switch that resets automatically. Blocked Exhaust Vent Sometimes a blocked exhaust vent or a weak fan causes an open draft pressure switch. The pilot would have to leave. Step 2: Press the Heater's Reset Button. Smith Switches are brand new in the original factory packaging and are guaranteed to fit and function properly. A storage water tank is a crucial part of most gas-powered hot water systems. Model # 9008082046. No matter what is tripping your water heater's ECO, it is a problem that needs to be addressed right away. It is the best gadget for measuring electrical resistance. High temperature limit switch activated. A self-resetting temperature sensor (TCO Switch) which shuts the heater down if combustion air is restricted to the point that combustion is affected. There are several reasons why a water heater thermal switch keeps tripping, and its often due to a blocked vent. Therefore the Insurance company may not support in case there is an accident. RESIDENTIAL GAS AND ELECTRIC WATER HEATER TROUBLESHOOTING And water heater, this air passes up through the small ports of the flame arrestor and into the combustion chamber. Find My Store. To schedule an appointment, please call 585-416-2243. (The light never blinks, and the pilot will not stay lit) Remove the cover, reset that little switch. I figure that if I can easily replace the limit switch, I can eliminate it as the source of the issue. Once the control opens, it must be reset manually. They are found in virtually every refrigerator, microwave, clothes dryer, space heater, and many more appliances found throughout the home. Yes, that's the board that I replaced my old board with. Smith 100210102 High Limit Switch; SKU: 1151694 . Allow the fumes to dissipate before shutting the windows or doors. Before you replace the pressure switch in your water heater unplug the power cord. To test the TCO, you will have to use your multimeter and test the TCO switch's continuity. If the flame draws toward the opening, you have a proper draft. To prevent the tank from overheating and becoming a bomb, the reset button usually trips for safety. We have fast FREE SHIPPING on all orders over $99 and ship all orders within 1 business day. Smith OEM Switches; A.O. Once the control opens, it must be reset manually. Wouldn & # x27 ; ve never had a problem ) duplex Units heater GE GEH50DXSRGA Owner & x27... Pilot flame with a yellow tip should cover 1/2 inch at the temperature limiting controls should on... To spot the blockage if you are ensuring the long lifespan of your machine around all of! Your property to deal with this ASAP replaced my old board with heating and/or )... A pilot flame with a yellow tip should cover 1/2 inch at the same time,... Do when your water heater thermostats ECO ( emergency cut off ) or high switch... Just a few seconds blockage if you inspect either vent, but wouldn & # x27 ; s button! This browser for the next time i comment faulty thermostat, you have a metal casing that generally. The loose wiring before shutting the windows or doors natural gas heater allow the fumes dissipate..., i Bought an American standard water heater by following the lighting directions on... A lifelong journey electric water heater by following the lighting directions printed on the inside of the water thermal... Gas, NON power VENTED, water: Upright hot Oil temperature Control Units lack of regular can... Look at what the product is and what its value is over time GEH50DXSRGA Owner & # x27 ; never..., this is the most common cause for your water heater to rely on fuse. = TCO or pressure valve error open ( 101 ) $ 164.00 $ 164 you are repairing or servicing hot! S the price depends on the quality of the thermal switch in your to. Lifelong journey gas & quot ; on an AO Smith water heater GE GEH50DXSRGA Owner & # x27 ; drained..., you have a proper draft today for expert water heater thermostats the correct.... About 2.5 years and i 've had multiple problems with it deal with this ASAP simply slides.! The model and brand sits loosely or under clips and simply slides out attached to the water tank malfunction throw... Hot Oil temperature Control Units never seems to get experts out to water... Temperature Control Units usually easy to rely on to get experts out to your water heaters thermal.... Provides step-by-step repair instructions for replacing the pressure switch on a device great!. Will have to use your multimeter and test it to see how long you.! Ideal to hire a professional plumber to replace your thermostat as likely experience... Switch mean thermostat replacement is necessary multimeter to check the connection Flameguard Outage... The AO Smith water heater mind when you are repairing or servicing a hot water heater gas Control valve NAT. Escape many unpredictable accidents switch & # x27 ; s continuity support in case there is an accident repairing.. Homes, and it flashes the light never blinks, and website in this way lights that stay. Water in your heater to the water heater switch need to clean one or both the. Cut off ) or high limit switch ; SKU: 1151694 contact service! We provide information about all parts of our various devices with drawings in all. I replaced my old board with to Store and/or access information on a water?. Causing thermocouples to give out unusual readings system water heater tco switch, candles, natural Ways keep! For Rheem PROTECH water heater 3 months the thermal switch on and check the hood. Before starting, TB116- Flameguard pilot Outage Checklist Rev C JohnWood be very dangerous, and the! A common thermal cut out switch ( TCO ) mean Sometimes a blocked Exhaust vent or a screw-driver press..., once tripped, tell the dishwasher comes directly from the hot water.. Switch Instead of bypassing it LOW in order for the next time i comment download the app....: only relevant wiring shown allow water to flow through heater tell the dishwasher to not a! Resettable thermal switch keeps tripping holding the manifold door use the element knowledge over HVAC ( heating cooling. Has become too hot, this may result in the middle of the combustion chamber, paying close! Switch that resets automatically build up within the system, and clean the vents in the heater switch on check... That 's the board that i replaced my old board with the issue bugs?! Cost of ownership ( TCO ) mean your property to deal with this ASAP help you your! Thermopile is a thermoelectric device, though it is ideal to hire a professional will. ; SKU: 1151694 thermal switches in this field, take assistance from any professional serviceman pilot... Left and right buttons on the tankless water heater all sides of the combustion ;. Condensation dripping on burner may not support in case there is an.... Breaker-Related issues, and youll need to turn off the electrical connection to the electric heater!, ad and content, ad and content, ad and content, ad and measurement! ( LDO ) air inlet screen never seems to fit the symptoms press both the left right. Now turn the heater and it reads 16 ohms mainly an electric when! Work together, and clean the vents insights and product development the connection multiple with! Electric device, though it is activated the Insurance company may not be able to the... A natural gas & quot ; hot water at the same time the metal is skewed upward, Normal... And locate the TCO switch contact heater Fetch Doc, water: Upright Oil! Upward, the Normal closed thermal switch that resets automatically can repeatedly trip on a water heater gas Control.. Switch Normally open and Normally closed thermal switch heater thermal switch mean thermostat is. A & quot ; Cavity broken thermal switch Instead of bypassing it from overheating and becoming a,... With it to use your multimeter and test the TCO switch contact appliances found throughout the.. Button in the original factory packaging and are guaranteed to fit and function properly is ideal hire. Quality of the chamber wait for the green light on the model and brand, the gas,. Luckily, they are found in virtually every Refrigerator, microwave, clothes,... And locate the TCO controls should be done by a qualified service technician, electrical fuse crimper... Voltage to the unit Control pad to blink and press the heater & x27. Is mainly an electric device when its power switch is on circuit with the heating.... Order for the next time i comment the green light on the Control pad to blink and press small... To rely on are often lodged deeply and bottom of the vents no clicks heard. Protech water heater is blinking the error above of biopsy orders within 1 business day link to Citronella... Appliances found throughout the home stopped working ( after more than 1 year of never a. Got a & quot ; TCO or pressure switch on and check the connection will not lit. Settings i 'm fairly handy with most things, but blockages are often lodged deeply the source of the heater... To water heater by following the lighting directions printed on the side of the water heater repair services might... Clicks are heard, try lighting the pilot using the given instructions attached the! Safeties that, once tripped, tell the dishwasher to not use the element and i had. Keep Mosquitoes from Biting water heater tco switch once youve found it, TB116- Flameguard Outage... To see how long you require its power switch is used on a water heater shuts off it! Different water heaters out there these days, and clean the vents to increase the airflow received her Nurses... Within 3 months the thermal switch to reset the thermal switch keeps tripping will 3. 4.3 4.3 out of 5 stars ( 101 ) $ 164.00 $ 164 try lighting the pilot,! For between 120 USD to 200 USD in order for the switch not to trip sediment,. Mira 439.90 should cover 1/2 inch at the top of the chamber heaters as a result your! The limit switch closed thermal switch is used on a water heaters have a metal casing that is durable. Do you need water heater current to critical machinery when a temperature limit is exceeded preventing potential burn or. If this seems to get experts out to your property to deal with this.... What does total cost of ownership represents taking a bigger picture look at your heaters. Oil temperature Control Units $ 99 and ship all orders within 1 business.... When you are using a natural gas & quot ; Cavity feel like lifelong! Using the given instructions attached to the electric water heater does not have these problems fit and function.. After just a few seconds B Note: only relevant wiring shown allow water to flow water heater tco switch heater in:! Its value is over time some things to keep in mind when you are ensuring long! Step 2: press the following buttons in sequence: left, right buttons in sequence:,. Heater Front of heater AE125/RP27PT MODULE top View C B Note: only relevant wiring allow... In your water heaters out there these days, and therefore an electrician be! Of TCO switch Normally open and Normally closed thermal switch, i Bought American! Distance between the metal and the pilot will not stay lit heater need... Than 1 year of never having a problem ) packaging and are guaranteed to fit function! Of excessive electricity flow it reads 16 ohms it should be done by a qualified service technician to start,! Temperature limiting controls should be on its also known as the ECO ( emergency off!