Some tankless water heaters have a minimum flow rate requirement and if that number is not reached, then the heater will not turn on. This is especially true if they are not professionally installed—in many cases, gas lines need to be extended in order to accommodate for an on-demand (tankless) water heater. If this flow requirement is not met, the heater will not fire. Unfortunately flushing isn’t as simple as pushing down a handle like you would to flush a toilet. Read more about flushing tankless water heaters here. Close off installer supplied cold water shut off valve (if none installed, install before proceeding). So in this example, after we flushed out the insides of the tankless water heater, we put it back together properly with a brass fitting kit made for tankless water heaters. If this … Call me for any plumbing, sewer or gas line issues. But no water would flow out. This is a heat exchanger inside a tankless water heater that had never been flushed. You may have turned it too high. However, if your gas water heater is turning off, it’s most likely your pilot light or thermopile is dirty or otherwise broken. In case you’re wondering, you won’t need to flush your tankless water heater as often if you have a water softening system (read more about the benefits of a water treatment system here). Depending on where you live, the cost of installing a storage tank water heater can range from $800 to $1,300, installing a tankless water heater … If you have any questions about tankless water heaters, call Atlantis Plumbing today at 770-505-8570. Wait 5 minutes and check all taps. If you suspect this is the issue we recommend you call in a plumber immediately. 4. Consult a local plumber or service person for help in … Here are some of the most common problems we've encountered when working on tankless water heater units for our clients here in the Atlanta area. tankless water heater. This may be as inconspicuous as a worn seal in a single-handle faucet. If you heater shuts off during usage, here are a few things to check: Ensure your filter is clean and free of debris (instructions) This error message tends to indicate a problem with the gas pressure. Is Your Water Heater Earthquake Ready in Fallbrook, Temecula, Oceanside and Vista? In the case that water is shut off for an extended period of time, and all the water from the tank is emptied, you must turn off the water heater to avoid damage. When they’re not, they will eventually develop problems. We asked “when was the last time it was flushed? When the tankless water heater was originally installed, the installer used “dielectric unions” to connect the water heater’s fittings. Shut off the inlet isolation valve on the water heater. You’re scheduling regular maintenance. How does a tankless water heater work? Turn off the unit. This error message could also indicate an electrical problem to the unit. Your water heater reset button is a safety device that shuts off power to your water heater when the water temperature inside it exceeds 180 degrees Fahrenheit.. Side note: the reset button is also sometimes referred to as the ECO (emergency cut off) switch or “high limit safety thermostat switch”. Otherwise, those built-up mineral deposits will prevent the water heater from functioning efficiently. If you find that your water heater has developed a leak, you should turn off the water via the valve on the heater to minimize leakage. Condensation may drip onto on the gas burner and cause corrosion that blocks the gas supply. This type of problem is typically caused by low water flow. When connecting the inlet water pipe to the unit, make sure to use a wrench to hold the unit’s onnetion, and another renh to tighten, so that the flow sensor on the unit will not be loosened or damaged. Since on-demand water heaters don’t store any water, you have to make sure you’ve purchased a unit that can provide enough hot water to your entire household. So we disconnected the tankless water heater from its fittings. This is usually your first clue there’s a problem with your tankless water heater. • WHAT TO DO IF YOU SMELL GAS − Do not try to light any appliance. When properly maintained, a tankless water heater should last about 20 years (according to National Labs). A faulty circuit breaker or a fault in the circuit causes the electrical supply to shut off at the breaker. The filter could be dirty, have some excess debris, Venting pipes that weren't installed properly, The wrong size gas lines were used during installation. The response: 10 years – the same age as the water heater! a water softening system (read more about the benefits of a water treatment system here, tankless water heater should last about 20 years (according to National Labs). Besides, the filter could also be clogged by dust or unusual stuff from the water supply. We have had many different plumbing jobs completed and done right by them. If the water heater is over 9 years old, it will most likely be a good idea to replace it. Problem is: dielectric unions are supposed to be used when connecting metals that are not alike. It could be something as simple as a loose wire. Your Air Supply or Exhaust is Blocked. Getting regular maintenance will catch or prevent other tankless problems. It's a common issue with electric tankless water heater units but can occur occasionally with gas units as well. The pilot light can get dirty from soot, dust and other particles. Copyright 2020 - Waterheaters Plus Plumbing, Gas Line Installation, Inspection & Repairs, Emergency Water Heater Shutdown Information, How Water Quality Helps or Hurts Our Immune System, Before Replacing a Kitchen Faucet Avoid These Costly Errors, Why a Tankless Water Heater Suddenly Shuts Off. − Do not touch any electrical switch; do not use any phone in your building. Sometimes that causes the tankless water heater to unexpectedly shut off. Whichever one of these problems you are experiencing, it's strongly recommended that you contact a professional plumber to assess the situation and correct it. Though unlikely, even a small restriction could cause the sensitive computer in a tankless water heater to shut down the system. And that’s when we saw the problem. Icy cold water splashes your noggin and down your back. The customer said their tankless water heater kept shutting off in the middle of a sower. They have been reliable and do excellent work. It had to be replaced. Rinnai Tankless Water Heater Installation and Operation Manual U334 • Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. A flame sensor problem could be why your furnace keeps shutting off. Here’s the most likely problem: The water in your water heater is getting too hot. This would, however, not allow much of the hot water to be used out of the tank as this will have now air locked the system. In all cases, tankless water heaters must be property vented. We use cookies to give you the best possible experience on our website. The gas water heaters built today have air inlet screens. So you can try lowering your water temperature and see if that keeps the unit on. If there is a steady stream of water, the cold water is flowing into the hot water lines. This limits the flow of oxygen to the pilot light, which needs oxygen to stay lit. Make sure that the shut-off valve, is not closed. You’ll get a free quote and guaranteed best price. This is an example. Check the filter to make sure that there's no debris in it. So the red reset button on your electric water heater keeps popping out and needing to be reset. Its a $400 or $500 job. This was an older model tankless water heater that doesn’t turn on until its at least three quarters of a gallon of water flowing through them. But, like many appliances, it's not perfect and it may require some maintenance now and then. That’s because tankless water heaters have brass connections. Water is Too Hot. If the tankless water heater is shutting off when someone opens or closes some cold water fixture, the problem could be with the temperature regulating valves you have installed somewhere in your water line. However, if corrosion does occur, it can lead to serious problems. What does Consumer Reports say about tankless water heaters? You’ve paid your gas bill (your tankless water heater can’t heat water without a steady gas supply!) He has owned and managed his own plumbing business for over 30 years. Here’s another example from a recent customer call. You’ll save money in the long run. That’s why it was turning off and on during a shower. 1. But if this valve or its inner elements are damaged, it can’t deliver enough gas … Read more about flushing tankless water heaters here. There are a few things that could be causing your electric tankless water heater to shut off. If your tankless water heater seems to run out of hot water giving you a cold shower, you may be experiencing the "cold water sandwich". For example, if you’re connecting a galvanized pipe to a copper pipe, you need to use dielectric fittings to unite them to prevent corrosion caused by electrolysis. This is not usually what happened, but if there is no water coming out, then you should go check your pipe valves and water inlet filter. November 29, 2018 – By #Me. The normal life span of those water heaters is in the 10 to 12 year range. Not that I’m aware of - Answered by a verified HVAC Technician. Prices range from about $170 for small gas-fired units to more than $2,000 for high-output heaters that can supply two showers at the same time; $1,000 is about average. Can I buy a Rinnai tankless water heater at Lowe’s or Home Depot? Electric Water Heater Keeps Turning Off. Call us to routinely flush your tankless water heater! If you are using an electric water heater, find the electrical circuit for the unit at … Did you recently turn up your hot water heater? Additionally, hard water (water containing high levels of minerals) can cause tankless water heaters to work harder and eventually break down. Need to Add a Gas Line for a Barbecue Grill or Outside Fireplace? You've upgraded your hot water heater to a tankless unit - congratulations! To check for this, shut off the cold supply to the heater and open either the pressure relief valve or any hot-water faucet. Tankless water heaters need routine flushing to descale the mineral deposits that build up inside the heat exchanger. You’re taking a nice hot shower, all sudds up and — yikes — your tankless water heater suddenly shuts off! When your water is turned off, cold water stops flowing into your plumbing system from the outside, meaning that a tank-type or hybrid heater stops being able to refill with more water. You’ve invested twice as much in your tankless water heater as a conventional tank-style water heater so the better care you take of it, the longer it will last. Often, mistakes take a while to show up. This is a problem that should be attended to by a professional plumber. That told us water was not getting through the fittings. We are available 24 hours a day, 7 days a week. Routinely flushing a tankless water heater extends its life and enables it to operate efficiently and reliably. Mineral deposits eventually corroded it. But in this case, dielectric unions should NOT have been used. Water running is a sign of a; plumbing cross-over. As you can see in the photos below, these dielectric unions were corroded to the point that they prevented much water from flowing through them. Are tankless hot water heaters better than a tank? Finally, the problem may have to do with low water flow rate. The problem could also be a venting issue. The better you maintain them, the more likely they will achieve optimum performance and longevity. The power valves could be shut off earlier. Tankless water heaters are not immune to problems. So, it’ll flicker off. Since yesterday. Water heaters have safety shut-offs that trigger when the water gets to a certain temperature, usually 180 degrees. However. My tankless water heater keeps shutting off. That’s the turquoise colors. Why I Stock Quality Water Heaters Made by Ruud, Top 10 Foods to Keep Out of Garbage Disposal, Hot Water Recirculating Pump for Instant Hot Water, How to Find & Test Your Water Pressure Regulator. Acworth GA, Atlanta GA, Austell GA, Cartersville GA, Doraville GA, Douglasville GA, Hiram GA, Kennesaw GA, Lawrenceville GA, Lithia Springs GA, Loganville GA, Mableton GA, Marietta GA, Powder Springs GA, Rockmart GA, Roswell GA, Smyrna GA, Tucker GA, Villa Rica GA, Vinings GA, Woodstock GA, and Surrounding Communities. If you can light your pilot light, but it keeps going out, the first item to check is … What is the best gas tankless water heater? Here are some potential causes for … If the flame sensor becomes corroded or covered in soot, it cannot detect flames, even when your furnace is running properly. What could cause this problem? But from all outward appearances, the tankless water heater looked fine – no leaks. Fulton County, Bartow County, Cobb County, Paulding County, Cherokee County, Gwinnett County, and Douglas County. And if you live in a hard water area like we have in Fallbrook, Bonsall, Oceanside, Vista and Temecula, you should flush it at least once a year. Dirty Thermocouple. It could be something as simple as a loose wire. The first things you should check are the correct supply of electricity, water, and gas to the water heater. Open again on Sunday from 10:00 am until 6:00 pm. Otherwise, those built-up mineral deposits will prevent the water heater from functioning efficiently. Hello, it is most likely a broken 'flow switch' that will have to be replaced. A Dirty or Clogged Air Inlet Screen. Help, My Tankless Water Heater Shuts Off During Showers. Inspect the inlet and outlet water shut-off valves connected to the tankless water heater to ensure they are both fully opened. Electric water heaters have a whole different set of problems than a gas water heater. The flame sensor is a safety device designed to turn off your furnace if no flames are detected, protecting you against dangerous gas fumes. When a customer tells us their tankless water heater is repeatedly shutting off, the first thing we do is flush it. Descaling is the critical part of routine maintenance. We’ll dive into a list of reasons why a tankless water heater may unexpectedly shut off. I’m here to help with any plumbing issue. Frankly, when we heard that, we were surprised their tankless water heater hadn’t completely corroded and started leaking. So we hooked up the pump to flush it. POU tankless heaters also can save more energy than centrally installed tankless water heaters, because no hot water is left in lengthy supply pipes after the flow is shut off. Flexible water heater hoses are recommended to be used with your water heater as part of the installation. The problem could be that the supply of gas to the unit is either interrupted or if the gas is coming from a propane tank - could be that the supply of gas has run out. Closed on Saturday. But for now, let’s look at two major installation and maintenance causes for the off-and-on hot water phenomena. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. In fact, these dielectric unions actually created the corrosion. There are a few things that could be causing your electric tankless water heater to shut off. Turn the hot water faucet on in a nearby sink. Check that the … They are trustworthy and honest in all their work.”. #2. Here are a few examples of other things that might cause a tankless water heater to unexpectedly turn off: “WaterheatersPlus Plumbing is the only plumbing company we use. After all, that’s what happened to an earlier customer who hadn’t flushed their tankless water heater. By shutting off the flow of water, Rheem Smart Water Heater with LeakGuard models can help you avoid an average of $4,000 in water leak damage 1,4 Built-in EcoNet Technology Complete control of your water heater—from adjusting water temperature and tracking energy usage to setting vacation mode—all from a smart phone 2 A failure in any part of this system can cause a water heater to shut off. Eventually, if not flushed, those minerals will literally eat away at the heat exchanger, causing it to leak and shortening its life. great benefits to a tankless water heater. This means that the mechanism is trying to light but it's unable to. Check that the heater is getting electricity, gas and water. If you have propane and smell gas in your home or a hot water heater that uses propane and if there is an earthquake, click here and follow the steps. Also, since tank-style heaters have been around longer and are more common, more professionals are capable of installing them and the labor costs are lower. Call a plumber to repair the crossover between hot and cold water lines. 4. I’ve lived in Fallbrook all my life. Sometimes that causes the tankless water heater to unexpectedly shut off. Grew up helping my dad in his plumbing business. When the water temperature in your water heater exceeds 180°, the red reset button (also known as the high-limit switch) trips. Descaling is the critical part of routine maintenance. You can also shut off the cold feed valve just to ensure no water is siphoned out of the tank if cold water is also used with the tank off. Customers call me “Plumber Dale”. This one actually corroded to the point it started leaking. Noritz tankless water heaters have a minimum flow requirement (0.5 gpm for most models.) Open all hot water taps supplied by the heater. But you still should not neglect flushing it altogether. There are some great benefits to a tankless water heater. No hot water is one of the most common problems in water heating systems. Some of those problems create situations where hot water unexpectedly shuts off. This is when the water heater fluctuates between putting out hot water and then cold water and then back to hot water, etc. We open at 6:00 am and close at 10:00 pm Monday through Friday. Check the gas burner and does … Tankless water heater keeps shutting off; Water heater is suddenly cold; Tankless water heater won't ignite; Electric Tankless Water Heater Keeps Shutting Off. These valves automatically change the hot water flow to prevent you from getting scalding water … If there is a steady flow of water from the hot output after the pipe has drained, there is a cross flow somewhere in the plumbing that must be fixed. Tankless electric heaters … If, however, the valve is broken, you must turn off the main water supply to prevent a never-ending flood. If you suspect this is the issue we recommend you call in a plumber immediately. Your water heater vent is unobstructed (be careful—these are usually located on the roof) The gas valve feeding your tankless unit is turned ON, not OFF. Like most high-end appliances, tankless water heaters need to be expertly installed and maintained. Plumber Dale Anderson grew up helping in his dad's plumbing business in Fallbrook. For most tankless water heaters, the display with present an … Then, just as suddenly, the water may turn hot again. Sewer or gas line, venting issues, combustion issues or other factors this, off. First clue there ’ s why it was turning off and on During a shower gpm for models..., hard water ( water containing high levels of minerals ) can cause a water heater from functioning efficiently in! 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Hadn ’ t completely corroded and started leaking Answered by a trained service Technician, can leak heaters of... Of reasons why a tankless water heaters built today have air inlet screens from recent. A ; plumbing cross-over was not getting through the fittings would to flush it like! Consult a local plumber or service person for help in … what is the issue recommend... The last time it was turning off and on During a shower a..., all sudds up and — yikes — your tankless water heater units can...