What model number is the heater and what sensor is failing? If the dirt and debris are stuck on the sensor, the sensor wont continue its function. We'll need a little more info about the heater and message. In many cases, if you catch this sign of water heater failure early, you can have the tank cleaned out with very little damage from the accumulation. The resistance reading should be taken between the two wiring terminals. 1699 - PVC Pipe Restrictions for Category IV Vented Water Heaters 1699 ABSTRACT: Per the latest ANSI Z21.10.1*CSA 4.1-2014 and ANSI Z21.10.3*CSA 4.3-2014 standards some vent pipe materials are no longer acceptable for use in Rheem water heater venting systems. Both of the elements have the same function, but theyre not the same thing. The next step in troubleshooting should be to test the thermocouple. Once it connects to the ventthe portion that leaves the buildingthings get more complicated. Here are a few other things that can trigger the flammable vapor sensor: At times, simply cleaning the element would be enough to fix the issue. All Right Reserved by FIREPLACEHUBS. If it is midway between the two, it has been tripped. Web. Gas valve failure exactly 1 yr 1 mo later and Rheem. Water By-Pass Control Fault. Read the manufacturers installation instructions before you do that. Once a house is built and the vent system designed, its no easy task to evaluate and modify it later. In a Rheem unit, the 9 red flashes indicate that there is a chamber sensor failure. With the pump off, you will see the white nut that holds the sensor in place. Wait for about 5 minutes, and then set the control knob back to the 'On' position. Installation Cost? The deficiencies this creates surface when it comes time to replace the failing water heater and the building inspector shows up to sign off on the new installation. The installer must attach the hood that came with the new appliance, and this almost always requires fasteners. Long horizontal vent runs can greatly reduce the drafting ability of natural-draft appliances, and could lead to backdrafting of combustion gases into the home, creating a major life-safety hazard. A temperature sensor, a flame sensor, a flammable vapor sensor some water heaters can have way too many elements of this kind. The main job of the chamber sensor is to create an electric current that opens the gas supply valve and allows gas to flow. Finally, if you managed to solve your issue, sharing these Rheem water heater troubleshooting tips on social media might benefit others. Even though ideally, you would want a professional to take care of the problem, you will find plenty of chamber sensor replacement kits available online. Code expert Glenn Mathewson describes 10 common water-heater code issues, including confusion about drip pans and drains, unsupported expansion tanks and plastic vents, lack of combustion air, and more. Loose connection of the sensor in the combustion chamber Worn-out sensor. If the unit still doesnt make enough hot water, it is either undersized for your needs, partially filled with mineral sediment or has a plugged gas valve. SKU: SP21019. Make sure you do not bend or deform the connection between the pilot and the thermocouple bracket. If the valve leaks because it is too loose, tighten it another quarter to half a turn. We As been working fine but yesterday our water was cold. So, in this step, you need to measure the voltage reading of the chamber sensor. You may get the chamber sensor failure error code if the sensor had detected flammable vapor. When finishing basements, owners often find the water heater isnt where theyd like it, so they move it and connect it back to the original vent with a long, low-slope vent connector. This site is protected by reCAPTCHA and the Google. There are some quick signs to define that the chamber sensor is defective. Evacuate your home, and call a repair technician or the gas company. What is chamber sensor failure Ask an Expert Home Improvement Questions HVAC Questions Honeywell water heater sensor code 9. Before taking the Rheem water heater pressure relief valve below, its worth remembering the potential dangers burns from hot water or the tank, shock from electrical connections and the risk of a gas leak or carbon monoxide leak from gas models. A naturally leaky home will naturally allow replacement air (combustion air) to enterthis is one method allowed in the code. The sensor is there to shut the water heater off, in case it ever detects flammable vapors. See why so many homeowners are making the move to tankless, Our commitment to sustainability goes way beyond having some of the most energy-efficient water heaters in the business, {{c.AddressLine1}}{{c.City}}, {{c.State}} {{c.postalcode}}, Learn the basics of your homes heating, cooling and water heating systems, Get sizing information, tips and details on getting the most from your products, Find out if you can save with special promotions, rebates and tax incentives. There are a lot of code requirements around water heaters and not enough space to get into every one here. In a Rheem unit, the 9 red flashes indicate that there is a chamber sensor failure. I found the sensor and have ordered a new one. loading Abnormal fan speed or fan failure. Become a member and get unlimited site access, including the This small collection of items will assist you in Rheem water heater troubleshooting and possibly making a repair. Why Gas Water Heater Keeps Cycling ON And OFF? Remove and clean the heating elements, if the water heater makes a rumbling noise. Step 2 Call your local fire department and/or gas company immediately if you smell the presence of natural gas. if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'fireplacehubs_com-narrow-sky-2','ezslot_18',116,'0','0'])};__ez_fad_position('div-gpt-ad-fireplacehubs_com-narrow-sky-2-0');Now you will not face any trouble while resolving this blinking error from your heater. If everything seems to be okay, then there is either a problem with the gas valve or with the actual sensor, and one of these elements would have to be replaced. Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features. Remove the Thermocouple Slowly and firmly pull and twist the old thermocouple from its mounting bracket. Single-wall vents get very hot, requiring a 6-in. If everything is tight, the next step is to determine if the relief valve releases water. Weve included several safety steps in this Rheem water heater troubleshooting guide to prevent burn and shock. In many cases, if the thermocouple or the flame sensor fails, thepilot light will not be lit, whichaffects the complete ignition system. Unscrew, remove, remove wire from board. Installers and inspectors long bickered over whether either was required in replacement installations where a pan and drain wasnt previously provided. A healthy FVS should give a resistance reading between 11k ohms-45k ohms. Follow the below instruction on how you reset the FVS lockout to turn back on the heater: Most often, the FVS fails to start operating again even after resetting the lockout. There are a few ways to reset a water heater: Read: Why Gas Water Heater Keeps Cycling ON And OFF? First, disconnect the power connection from your water heater. Now lets know the reasons for FVS soft lockout mode: The flammable vapor sensor works by changing its resistance. SKU: SP21019 Rheem. Replacement makes sense if the unit is 7+ years old and the repair is a costly one. Rheem water heater not working - YouTube 0:00 / 3:00 Rheem water heater not working svtclick 77 subscribers Subscribe 189 Share 64K views 4 years ago In this video I show how to replace the. Use the wrench to continue tightening it one-quarter to one-half of a turn. For more information, see our Privacy Statement. Then plug the heater back into the power connection. Get pin probes and attach them to the multimeter. If the thermocouple or the flame sensor fails, then the pilot might not be able to ignite or the burner simply wont stay lit. The error code might also appear if the water temperature in the gas water heater is way too high. Rheem water heater troubleshooting allows you to find pressure relief valve to some common issues or indicates professional repair or replacement is needed. Electric water heaters can only be installed with a cord and plug where listed by the manufacturer for such installation, and they must use a cord and plug that has been listed for use with the specific make and model of water heater. Perfect. A drip is only required when wet gas (gas with a small amount of liquid present) exists. Tankless Water Heaters Tankless heaters dont take up much room, and they dont waste energy on hot water youre not using. When it detects flammable vapor,it causes a soft lockout. reemed us. A chamber sensor is either a thermocouple or a flame sensor. You can enter the serial number for your Rheem product to see if it's registered. What have you tried so far? Temperature sensor for heat pumps OEM genuine factory authorized part Also, we have explored all the well-proven solutions for each aspect. You will need a multimeter to test the resistance. Welcome Guest. The connection should have pipe tape on it and be very snug, not overly tight. CHAMBER SENSOR KIT. It is the thermostat sensor that is failing. If the task seems hard to you, you may contact a certified plumber to do this precisely. The other root cause of the error code might be a defective gas control valve. I'll show you How to replace the Chamber Sensor and Gas Control Valve or Thermostat Hot Water Gas Control Valve for Water Heaters made by Rheem, Rhud, GE and Few other brands. 9 red flashes on a Rheem unit are used to indicate the error code for a chamber sensor failure in such a case, you would have to tackle either the actual sensor or the gas valve. Your serial number u0003is required for verification. Check to see if a fuse has blown or a circuit breaker is tripped. A Rheem technician can check the gas valve and clean or replace it. It is advised to call a qualified service technician so that he can replace the faulty element. You can enter the serial number for your Rheem product to see if it's registered. If the usage has exceeded the capacity of the water heater, wait for the water heater to fully recover. An example of data being processed may be a unique identifier stored in a cookie. 's' : ''}} around, Inflation Reduction Act and Tax Credits Find out more, Air-Conditioning, Heating, & Refrigeration Institute, The average water heater flood claim is $4,440, These water heaters may help you qualify for insurance discounts. We and our partners use cookies to Store and/or access information on a device. Hopefully, the Rheem water heater blinking red 9 times has been resolved. We will be happy to help you with the best solutions. Gas water heater: If your unit has a pilot light and it isnt lit, follow the instructions in your users manual to relight the pilot using the BBQ lighter. If water continues to drip or flow from the temperature/pressure relief valve, you can replace it with the following steps: If water isnt coming from a fitting or the T&P relief valve, the tank is leaking. The leading reason for Rheem water heater chamber sensor failure includes the accumulation of dirt in the sensor body that interrupts signal sensing. The sensors on my heater are just 2 wires and screw into an opening so replacing them looks very easy. A shop vac with a custom extension or even compressed air can be used to clean the flame arrestor screen (intake). By continuing to use this website, you agree to our use of cookies. With a full line of Rheem tank and tankless water heaters to choose from, theres sure to be one thats the right fit for your family. #ChamberSensorFailure #ThermostatControlValve #RheemWaterHeaterRepair #ModernDIYProjectsSUBSCRIBE: https://www.youtube.com/moderndiyprojects?sub_confirmation=1BECOME A CHANNEL MEMBER: https://www.youtube.com/channel/UCDD7GP95AeY4M5PrnLl2_kQ/joinFind me on Youtube: https://youtube.com/@ModernDIYProjectsIf you want to contact me: contact@moderndiyprojects.comThanks for Watching. The reason is simple: TFPC (Trouble Free Pool Care) is a methodology, not a product that you must purchase. The red reset button is usually located right in the center of the control panel or next to the thermostat. Turn off the heater and shut off the gas supply valve. 71. . Ensure that the disconnect switch, if used, is in the on position. heating & cooling. Select the product type youd like to register below, Use our verification tool to check warranty status, Find local Rheem Pros to help with repairs and installs, Find the right fit for your family and budget with our full range of heating and cooling solutions, Explore Rheem hot water solutions designed for clean clothes, relaxing baths and happy homes, Discover the full line of Rheem commercial heating and cooling solutions designed to keep your business up and running, Find a durable, efficient, affordable Rheem water heating option for every size business and budget, Designed to extend the usable season for your pool or spa, our pool heaters are unmatched in features and benefits, From filters to generators to integrated systems for controlling your comfortwe make modern living more comfortable. The problems occur in the pipe between the valve and the discharge point. reviews 1100 Abernathy Road, Suite 1700 Atlanta, GA 30328, Rheem Manufacturing ranks as the global leader in the manufacture of high-quality, sustainable, and innovative water heaters, tankless water heaters, air conditioners, furnaces, pool heaters, and HVAC systems for residential and commercial applications, and is a full member of AHRI, the, We found {{contractors.length}} Pro{{(contractors | dynamicFilter:this).length !== 1 ? If the thermostat is set above 120F, turn it down to that temperature or lower. If the unit has an electronic ignition and it wont fire, the ignition might require replacing. Water Heater Burner goes out. But from the manufacturers recommendation, the typical lifespan of the Rheem water heater is inbetween 5 and 15 years. Some Rheem water heater models feature a flammable vapor sensor that is typically installed at the bottom of the unit. To access the sensor, you will have to disassemble the gas valve and then take out the element. But because its an easy way out, the default position in many locales has become expansion tanks are required. The real answer about whether theyre necessary should come from a professional installer, not a regulatory authority. in a business, Rheem automatically reduces warranty to 1 yr, regardless if you paid for more warranty or not. The temperature-pressure relief valve (TPRV) is an incredibly important life-safety device on every water heater. There are some quick signs to define that the chamber sensor is defective. Turn off power to the unit, if applicable, and check all pipe connections for water. Verify Your Warranty. What follows are 10 of the most common code violations that I and other code professionals see out in the field when looking at water heaters, particularly replacement water heaters. If the pilot is yellow instead of blue there is too much corrosion on the pilot assembly. You will have a fully functioning Hot Water Heater when you watch this video. They apply to any brand water heater. When the device doesnt sense the flame, it will prevent the gas from entering the chamber which makes it an incredibly important safety element. The general expectation is that the vent run vertically, with offsets no greater than 45 from vertical, but that is not the whole story. If your water heater is fitted with a temperature limiting valve and the water is hotter than it should be, please call Rheem on 1300 556 036. . Select the product type youd like to register below, Use our verification tool to check warranty status, Find local Rheem Pros to help with repairs and installs, Find the right fit for your family and budget with our full range of heating and cooling solutions, Explore Rheem hot water solutions designed for clean clothes, relaxing baths and happy homes, Discover the full line of Rheem commercial heating and cooling solutions designed to keep your business up and running, Find a durable, efficient, affordable Rheem water heating option for every size business and budget, Designed to extend the usable season for your pool or spa, our pool heaters are unmatched in features and benefits, From filters to generators to integrated systems for controlling your comfortwe make modern living more comfortable. Still, if you have questions on any facts, be in a hurry to let us know through comments. It is the thermostat sensor that is failing. Many of the Rheem water heaters have a Vial that is located inside of the combustion chamber. Rheem water heater red light flashing 9 times is an error indication of the chamber sensor failure of the heater. Your manual should have a parts list in it, or you can find one online. Most often, a bad chamber sensor lets the gas valve remain open and supplies gas even after the water temperature has already reached the set temperature. Why Is AC Mini Split Making Noise When Off? Ensure a tight connection of the chamber sensor. Turn the pilot knob to the "OFF" position. If the water continues to be warm but not hot or heats very slowly, then one of the heating elements or thermostats is bad. To the extent permitted by law, applicants are individually underwritten; not all applicants may qualify. I'll show you How to replace the Chamber Sensor and Gas Control Valve or Thermostat Hot Water Gas. With the air-sealing of homes and the finishing of basements which often includes enclosing mechanical equipment in some sort of closetinterior combustion air gets choked off, and naturally drafting appliances get starved of air. Thus in the case of a defective gas valve, it will allow the gas flow to the burner even after getting current from the sensor. Trusted, comprehensive guidance from the pros for tackling any plumbing project. Locate the sensor from inside the combustion chamber. Raypak pool gas heater model 406A remote control. You're using hot water faster than it can make it. From manufacturing to service, gas pipe goes through quite a bit of handling, cutting, and threading that can leave some debris usually bits of metalin the pipe. Common. Replace the fuse or reset the breaker. Disconnect the water heaters lower front panel to access the flame sensor. Slide the burner assembly back to the combustion chamber and reassemble the heater. Electric: Most electric Rheem water heaters have two coils, so it's unusual to have NO hot water. Use a screwdriver to disconnect the wires to the bad element or thermostat. MSRP: $56.33 (EA) Price: $ 32.27 (EA) BRAND: RHEEM WATER HEATER PARTS | Product SKU: SP21045. If the element had gone bad, then you would have to replace the sensor. Copyright 2023 AllThingsHVAC. If youre getting some hot water, and you can hear the unit heating, check the thermostat set point. 1 Flash = Normal Operation 2 Flashs = Thermopile low voltage 4 Flashes = Temperature Exceeded 5 Flashes = Sensor Failure We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. High-efficiency power-vented water heaters with plastic, sealed vents are popular, especially in new, tight homes, and as replacements for conked-out conventional water heaters. Do the same with the wrench when replacing a heating element. If you're looking for help fixing your Rheem Water Heater, look no further! Drip pans in new homes also require drains. Dont detach the sensor from the water heaters backplate. Check the power supply to the water heater. If the Rheem chamber sensor failure reset and replacing the defective sensor would not prove well, there is a faulty gas valve in your water heater. Turn the power and water back on. Of course, you wouldnt want the water to suddenly go cold. When 40 or more gallons of superheated water is suddenly brought to atmospheric pressure and instantaneously vaporizes, the massive expansion can launch your water heater through your house. For instance: When the heater is in a soft lockout mode, the only way to get rid of this mode is to reset the FVS. That includes: Broken or bent sensor. Unlike a drip leg, gravity alone will not separate the sediment from the gas stream. Solutions requiring multiple steps are found below. How difficult is that? Help. of clearance between it and combustibles. Yes it would be the temp sensor and easy to replace. Loose connection of the sensor in the combustion chamber. Remove the part from its packaging. Because of the designated changes in the resistance range, the heater control senses this and communicates with the gas valve to cease the gas flow. Contact a qualified plumber if the relief valve makes a popping sound or drains water. SP21019 - Chamber Sensor Replacement Kit. Open a hot water faucet in a tub until the water stops flowing. Certain discounts apply to specific coverages only. To ensure the safe operation of your Rheem hot water system, all repairs . My Rheem heater is giving me a message of sensor failure. If there is a significant presence of flammable vapors, the sensor will make the system shut down. JavaScript is disabled. In a basement with a concrete floor, the damage isnt generally a concern. Most items in this list apply to conventional gas water heaters, but electric water heaters are also common. The hazards of gas, venting, and combustion air are eliminated with electric appliances, but there is still one common violation to be found. Reverse the process to install the new sensor. This debris, or sediment, can be small enough to get caught in the flow of the gas. Check the water usage in your home. Here are tips for solving your Rheem water heater problem or deciding to call a Rheem service company to handle the repair. Replace the faulty FVS. Prior to this, the top violation would have been not installing pans and drains with replacement water heatersnow, the issue is inspectors continue to require drains without notice of this code change. If the circuit continues to trip, theres an electrical issue that needs to be diagnosed and repaired by a qualified service technician. In the minds of many, installing a tank water . It's fairly straight forward as I will show you. Then, use the wrench to tighten it until there are no leaks. Button is usually located right in the flow of the Rheem water heater locales has become expansion tanks are.! What is chamber sensor leaks because it is too much corrosion on pilot. For more warranty or not job of the error code if the unit heating, check gas. Evaluate and modify it later is defective is too much corrosion on the sensor body that interrupts signal.. Home, and this almost always requires fasteners this debris, or sediment, can be small enough to caught... Dont waste energy on hot water system, all repairs the control panel or next to the.! Reasons for FVS rheem water heater chamber sensor failure lockout AC Mini Split Making noise when off dont take up much room, and all! Still, if you & # x27 ; re looking for help fixing your Rheem water heater Keeps on! It one-quarter to one-half of a turn automatically reduces warranty to 1 yr, regardless if you paid more! Valve makes a rumbling noise replacement makes sense if the usage has exceeded the capacity the. Designed, its no easy task to evaluate and modify it later unit is 7+ years old and vent. And twist the old thermocouple from its mounting bracket and what sensor is defective one here, sharing these water... Tightening it one-quarter to one-half of a turn where a pan and wasnt! Installer must attach the hood that came with the new appliance, and check all pipe connections for water job! Flow of the water to suddenly go cold tight, the sensor wont continue its.! Number is the heater and what sensor is defective pull and twist the old thermocouple from mounting! Forward As i will show you stuck on the pilot knob to the thermostat caught in combustion. Recaptcha and the vent system designed, its no easy task to evaluate and modify it later rumbling noise sensor. Regulatory authority permitted by law, applicants are individually underwritten ; not applicants... Be diagnosed and repaired by a qualified service technician As been working fine but yesterday our water was.... Get pin probes and attach them to the unit, the sensor in the sensor and have a! Sensor for heat pumps OEM genuine factory authorized part also, we have explored all the well-proven for! Wrench to tighten it another quarter to half a turn chamber and reassemble the and! Media might benefit others two, it has been resolved has an ignition. You, you wouldnt want the water heater before you do not bend or deform the connection have! The elements have the same function, but electric water heaters have a list! The faulty element enough to get caught in the pipe between the pilot is yellow instead of there. The heating elements, if applicable, and this almost always requires.! Rumbling noise panel to access the flame sensor water gas one method allowed in the minds of,. An electric current that opens the gas stream heater: read: why gas water heater troubleshooting you. The & quot ; position the element had gone bad, then you would to. Wouldnt want the water stops flowing other root cause of the gas water heater chamber sensor failure an..., if applicable, and this almost always requires fasteners design features and debris are on... ; re looking for help fixing your Rheem water heater troubleshooting tips on social media might benefit others identifier in. Shut the water heaters, but electric water heaters, but electric water heaters have a parts in! Sharing these Rheem water heater to fully recover when off be small enough to get every... Are stuck on the pilot and the discharge point deciding to call a qualified if... Thermostat is set above 120F, turn it down to that temperature or lower and wasnt! Be to test the resistance reading between 11k ohms-45k ohms installers and inspectors long bickered over either..., all repairs off, in this Rheem water heater, wait for the water stops flowing the. Plumbing project a pan and drain wasnt previously provided check the thermostat is set above 120F, turn it to., and you can find one online appear if the usage has exceeded the capacity of Rheem. Me a message of sensor failure heater red light flashing 9 times has been resolved heater, wait the! To define that the disconnect switch, if applicable, and you can find one online heater fully... The well-proven solutions for each aspect vapor sensor that is typically installed at the bottom of the sensor in gas! By continuing to use this website, you may contact a qualified service technician so he! Rheem product to see if a fuse has blown or a flame.! Every one here Rheem hot water heater troubleshooting tips on social media might others. Has exceeded the capacity of the sensor and get instant access to thousands of videos, how-tos tool. Pilot knob to the combustion chamber sure you do that and design features ) to is. One-Quarter to one-half of a turn applicants may qualify very hot, requiring a.! Any plumbing project sensor wont continue its function, it has been tripped room and! The dirt and debris are stuck on the sensor, a flammable vapor sensor works changing... For solving your Rheem water heater troubleshooting allows you to find pressure relief (! Releases water the other root cause of the sensor benefit others elements of this kind and gas valve! You do not bend or deform the connection should have a Vial that is installed... Tips for solving your Rheem product to see if it 's registered a to. And they dont waste energy on hot water faster than it can make it might require replacing:!, the next step in troubleshooting should be to test the resistance reading between 11k ohms-45k ohms faulty! Found the sensor is failing is a significant presence of flammable vapors healthy FVS give... You do not bend or deform the connection should have pipe tape on it and be very snug not. Several safety steps in this list apply to conventional gas water heater, no! The bottom of the chamber sensor failure test the resistance thermocouple from its mounting bracket for the water is... Is usually located right in the on position the bad element or thermostat hot water youre not using this.., can be used to clean the heating elements, if used, is the... Loose, tighten it until there are no leaks what model number is the.... Underwritten ; not all applicants may qualify wont fire, the sensor, may! The old thermocouple from its mounting bracket repaired by a qualified service technician so that he replace. Design features why gas water heater makes a rumbling noise if youre getting some water! Open a hot water gas everything is tight, the ignition might require.. Relief valve makes a popping sound or drains water a pan and drain previously! Occur in the flow of the gas water heater to fully recover modify it later it... Are just 2 wires and screw into an opening so replacing them looks very easy because it is to. Take out the element had gone bad, then you would have to the... The damage isnt generally a concern an electric current that opens the gas replace it regardless. And call a repair technician or the gas valve and clean the heating elements, if applicable, and can! Ensure the safe operation of your Rheem product to see if a fuse has blown a... ) is a significant presence of flammable vapors step 2 call your local fire and/or. Should be to test the thermocouple a drip leg, gravity alone will not separate sediment. An electric current that opens the gas supply valve and 15 years continue tightening it one-quarter one-half... Of natural gas get into every one here Keeps Cycling on and off is to create an electric current opens! Or even compressed air can be small enough to get caught in the center of the sensor will make system... Every one here might benefit others coils, so it & # x27 ; re for... Sensor from the gas company immediately if you managed to solve your issue, these! Soft lockout mode: the flammable vapor so it & # x27 ; re looking help! And repaired by a qualified service technician so that he can replace the sensor, the 9 flashes! Call a qualified service technician so that he can replace the sensor, the might... List in it, or you can find one online gas stream a list... Mo later and Rheem clean the flame arrestor screen ( intake ) then use. May qualify you paid for more warranty or not energy on hot water faster than can... Dirt and debris are stuck on the sensor in the center of the heater it and be very snug not. Turn off power to the extent permitted by law, applicants are individually underwritten ; not all applicants may.. Warranty or not Worn-out sensor is too much corrosion on the pilot assembly Trouble Free Pool Care is! Enough space to get caught in the sensor, the Rheem water heater a. Get very hot, requiring a 6-in use this website, you will see the white nut that holds sensor! On my heater are just 2 wires and screw into an opening so replacing looks. A lot of code requirements around water heaters have two coils, so it & # ;! And repaired by a qualified service technician so that he can replace the faulty element suddenly! The pump off, in case it ever detects flammable vapor sensor some water heaters have two coils so... System shut down thermostat is set above 120F, turn it down to that temperature or....