navien tankless water heater making loud noise

The debris, on the other hand, might cause the tank to overheat. If this is the case, remove any blockages from the vent pipes while making certain that nothing falls down the vent pipes. Turn off the cold water supply to the tank by turning the shut-off valve on the shut-off valve. The tankless system may have an internal check valve, so when the small water heater turns on to heat water, or hot water gets to it, you may end up with warmer water once you stop using it while the tank recovers. In severe circumstances, the sediment accumulation inside electric tankless water heating systems might completely engulf the heating element and cause it to fail. Dirty Flow Sensor Solution: 8. In the same way, look for any kinks in the electric cable that might signal an internal failure. It has everything to do with the expansion and contraction that occurs as your pipes heat up. This is usually nothing to worry about either, and is simply the sound of the water being circulated through the heater. The most common cause of knocking or banging noise is sediment buildup. You may identify the source of the problem to a few of valves in the unit. Additionally, in severe circumstances, popping sounds can be heard when the sediment begins to break apart as a result of the heat. A whooshing noise. Youll avoid having your unit explode because of this. Contractor's Assistant: Is your Navien water heater gas or electric? If your water heater is powered by gas or oil rather than electricity, it is more probable that the cracking sounds you are hearing are caused by moisture buildup in the tank. The exact procedures to drain your water heater to get rid of the bubble, bubble, toil, and trouble will be demonstrated in detail. Go to the temperature and pressure relief valves and turn them on. In order to complete this assignment, lower the temperature of the device. As soon as the water is heated, it begins to bubble and the lid begins to move. First, it could be that the water heater is over-pressurized. Please keep in mind that this content may contain affiliate links. This is probably the most common reason why your water heater makes noises. Loose Or Dirty Parts Solution: 4. Pump rattles at first, then makes loud whining noise. Simply follow the instructions outlined below: Turn off the hot water heater as well as the cold water supply if applicable. Navien Tankless Water Heater Humming Noise [Fixed] by Eric Alvarez Your Navien Tankless Water Heater will make a humming noise due to the following reasons: Dirty heat exchanger Mounting issue Fan motor or motor mount comes loose Loose metal enclosure cover Sound may come out of the recirculation pump Condensate pump is not If you have a Navien tankless water heater, you may have noticed a loud banging noise coming from it. To flush all sediment out of the tank, you have to empty it. It will be necessary to clean up the residue and replace the present anode with a magnesium-based type in the future. Similarly, if the system is powered by electricity, check to see that the device has not been mistakenly disconnected. Flushing the tank with a deliming solution once a year will avoid significant buildup in the tank and will also keep the tank and surrounding parts cleaned. Lets take a look at some of the issues that might arise with a Navien tankless water heater, as well as the remedies that can be used to fix them. Sediment accumulation: When you have sediment buildup in your systems, you may generally hear cracking or hissing sounds. When sediments build on the bottom of the tank, it traps the hot water underneath. WebCheck the temperature of the hot water outlet pipe on the water heater. It can be made up of sand, small stones, and other small particles. The tankless system may have an internal check valve, so when the small water heater turns on to heat water, or hot water gets to it, you may end up with warmer water once you stop using it while the tank recovers. Does your unit appear to be sitting in a pool of water? Take a look at the water thats gushing out of the end of the garden hose. Similarly, if your system is powered by natural gas, check to see that your homes gas has not been shut off by your service provider. WebDecember 2017 Good Afternoon, We have a new Navien NCB-240 in our new construction home. For the last several months, whenever you turn on the hot water after it's not been used for a while I hear this loud "whoop" kind of noise outside. If your water heater is making cracking and rumbling noises, it is necessary to flush out the sediment from the tank of the water heater. Every two months, inspect and replace the TRP valve, which should be replaced every three years. If no hot water taps are open you shouldn't hear water moving through the pipe. Check to see that all valves have been opened.In addition, I urge that you check other lines for bending as well.In addition, you should search for any closed valves that need to be opened. However, even if those noises do not necessarily indicate a problem with the heater, you should investigate the source of the noise and fix any underlying problems. There are a few different things that can cause it, and thankfully, there are a few different ways to fix it. Water expands as it heats up and flows through the debris as it is heated by the water heater. Anyone can learn to be a responsible water heater owner with a little bit of simple maintenance on their part. Consider what this will do to your utility expenses! Contractor's Assistant: Is your Navien water heater gas or electric? This can be caused by a variety of things, such as a leak in the system or a faulty pressure relief valve. What is the source of the noise? Issues with the Navien Flow Sensor. WebHi Nora, Gas tankless hot water heaters all make noise when firing up and heating water, but the levels are usually less than 90 decibels. The test lever will disengage from the brass stem to which it is attached, and hot water will be released from the pipe.If you notice that no water is coming out of the pipe, you should consider replacing the TPR valve with a new one.In order to guarantee that the TPR valve is operating correctly, it is recommended that it be examined by an expert at least once a year. Water entering or exiting the tank can be caused to move if the water is shut off quickly, causing the pipes to knock against studs or the interior of walls. If you have a Navien tankless water heater and youre hearing a loud banging noise, dont panic. Occasionally, you may have problems with your tankless water heater that are unrelated to noise and that will need to be handled as soon as they develop. X-HazMatX7-X 1 yr. ago. If the vent is blocked, it could be causing the banging noise. If youre the lucky owner of a Navien tankless water heater, you might be wondering about the normal range of noises that your heater can make. Carbon monoxide gas, on the other hand, is an odorless and colorless gas that cannot be detected or seen. WebHi Nora, Gas tankless hot water heaters all make noise when firing up and heating water, but the levels are usually less than 90 decibels. It is also possible to employ spacers to secure it in place. Every year, you should inspect your appliance at least twice. If your Navien tankless water heater is making a loud banging noise, there are a few possible explanations. Sounds like a broken impeller. It is impossible to thoroughly clean your dishes and tableware without a water heater, which is why you must have one installed in your home. Various minerals, such as magnesium and calcium carbonate, get trapped in this area when water flows towards your home. When the pipes are installed, they make contact with the wall, resulting in the noise. Navien Tankless Water Heater Humming Noise [10+ Easy Fixes] 1. Test the valve by lifting and lowering the lever many times to identify the problem. If the TPR valve on your appliance is leaking, you must replace it as soon as possible. How Often Should You Change Refrigerator Water Filter? This is an indication that your unit is experiencing difficulties. The accumulation of sediment is a typical cause of booming and slamming noises. This is especially true if you do not have an expansion tank installed. It is unfortunate that carbon monoxide may cause mortality as well as bodily harm and disease. Mineral Build-Up Solution: 2. Leaving the interior hot water spigot open until the water starts to flow will allow the trapped air to escape. Press question mark to learn the rest of the keyboard shortcuts. It worked perfectly fine for several months, but now started making loud vibrating sounds on start up, and - much more bothering - some 5-10 minutes after I turn off hot water. Similarly to banging, popping is frequently a symptom that there is too much sediment in your water heater tank and that it needs to be cleaned up. Spacers between the pipes and the walls can be used to quiet any noises that may be generated. Pump rattles at first, then makes loud whining noise. Youll want to purge your water heater as often as possible to keep it running efficiently.If you put off this activity for a lengthy period of time, the quantity of residue that builds up may make it difficult to flush the system. If the storage tank on your water heater is clogged with debris, it will only store water at the place where the burner is located on the water heater. Position your ear next to the hot water outlet pipe. Then quiet. Regardless of what you may have heard, tankless water heaters can get noisy. Typically, heat traps or check valves that have been added to encourage water flow in the appropriate direction may make a tapping or ticking sound while they operate. If youre still not sure whats causing the noise, you can contact a Navien service technician for help. I've bled the system top and bottom and even removed the return line then switched to internal pump yet it still makes this noise. A place for plumbing advice and help. Sun to protect your water heater from any strange problems that may arise. Turn on the cold water valve entering your heater. Cleaning the tank and draining the water heater should be done using a deliming solution. If your water heater is making noises that sound like water is running, you will need to check for leaks. It can result in a high-pitched popping sound every time you run the water heater. Id call tech support. How To Reset A State Select Water Heater? When the correct conditions are met, such as when the dishwasher or toilet flushes, the water entering or exiting the tank will be immediately shut off. Another possible cause of the loud banging noise is that the water heaters heat exchanger is dirty. We use it for hot water and for hydronic heating. Siphoning Water Solution: 3. It is usual for these types of noises to occur once in a while with electric heaters, so if your system sometimes emits a crackling sound, it is probably not a major problem. Water heaters are equipped with TPR valves, which allow steam or water to escape from the unit if the pressure or temperature becomes excessive. You can also reach out to Smiths Plumbing Services via their website, which can be found here. WebWe have an external Hot Noritz tankless water heater that was installed in May of 2008.