With excessive sediment buildup, water and air will concentrate at the bottom of the tank, causing a pressure buildup. Acidic water can damage car paint and more. Remove the four screws and take off the front cover to gain access to it. Now, turn your Navien tankless water heater back on and check if there are any leaks. Ive never seen oil droplets like that. WebTurn off the water heater for a minimum of 30-minutes. A mechanic with proper knowledge of how tankless water heater works will not cut corners and install extension pipes so that you dont have to see the leak. Thats why you need to take steps to fix the situation. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. You might also want to CAREFULLY take some very fine wire or a toothpick and try and clean out the weep hole. water leaking out of top and bottom of tankless hot water heater. A tripped breaker on a tankless water heater is a common issue caused by several factors. This is where your water supply comes from. CR and NP 30000466A . All other causes are electrical. Once the water has drained, plug the unit back in and turn it on. The heat exchange can corrode which leads to small metal bits getting stuck in the trap and eventually clogging the condensate drain. Improperly installing a tankless water heater can lead to leaks caused by weak pipe connections, a poor venting system, or a too-high water flow. Is the water heater a loss? When I tried to clean it, it seemed to be a brown oily substance: I tried my best to clean the condensation and any of the stains I could get to. Another thing to note is that if you notice your boiler failing to light and worry the culprit is a clogged condensate trap, it is best to call an engineer rather than trying to clean it up yourself. Frozen and clogged condensate pipes are the answer to why your boiler is leaking. Source: terrylove.com. Very straightforward repair once you obtain the o-ring part (cost $3 online, I bought two). A bad Flow sensor. Navien tankless water heater CR-240A is leaking I've had this Navien CR-240A for 7 years (The unit is longer under warranty). In that case, Hi. A condensate pipe devoid of an auto-siphon may be shaped like a U.. How to clean a navien tankless water heater turn the power off the unit. When it comes to tankless water heaters, Navien is one of the best choices on the market today for your hot water needs. 10. All Right Reserved by HeaterFixLab. Spent a few minutes looking at mine. In the toilet or sinks case, however, it is to prevent bad sewer odor from entering your home. JavaScript is disabled. If the plumber throws that to the wind and does the venting however he wants, condensation can cause leaks in the water heater. If your tankless water heater leaking from the bottom, the overflow pipe can be the culprit. This tip is applicable if you have hard water in your home. Has anyone determined how the oil droplets form? No water flow into the Unit. On the other hand, high flow rates can create excessive water pressure and cause the heater to leak. Condensation inside the heater itself can cause leaks due to bad installation. Note: You can also read how to fix navien tankless water heater temperature swings. Space-saving high-efficiency condensing boilers provide the ultimate heating and comfort experience. Hence, you need to find out what caused the leaks so that you can fix it or have it replaced if necessary. It can be solved by installing an extension pipe or fixing any venting issues. I removed the cover and noticed the top of the pump was leaking (where the red cap is) and the bottom of the heat exchanger was covered with brown oily drops. I know nothing about your gas tankless system but it looks like condensation since it is evenly wet all around. Then restart; Remove and clean the inlet water strainer; Check the automatic flow adjustment valve; Flush the tankless water heater; Available Parts: Water Inlet Filter; Water Adjustment Valve: NPE-A; Most water heaters have a shutoff valve on the cold supply inlet pipe. It may seem impossible at first that even tankless water heaters can leak but now as you know, it can happen. The level of PH in the water determines how fast acidic water will damage your system. I have a navien Obstruction In Pipes Solution: 10. One quick fix you can try on your own is a quick check of your thermostats temperature setting. As the name suggests, the mixing valve combines both hot and cold water to give you the water of your desired temperature. No water flow into the Unit. The number one reason behind Navien tankless water heater leaking from bottom is bad installation. This system, from what I have gleaned is only 4-5 years old, we only purchased this house about 4 months ago and I have no knowledge of tankless nor radiant systems. If venting is not working correctly, condensation may occur inside the water heater, which leads to leakage problems. Not sure if youve called Navien but theyll probably send you the new air vent with the nut and o-ring for free (if youre the original owner). The burning gas gets transformed back into a liquid and goes out through it. Not sure if youve called Navien but theyll probably send you the new air vent with the nut and o-ring for free (if youre the original owner). Has anyone heard of the cause/fix yet? I have a near constant drip coming from my Navien, tankless water heater. The flow only occurs during programmed "off" periods, but not always. Partially Closed Valves Solution: 6. Before the condensate is expelled through the condensate pipe, the water is accumulated in the sump of the boiler. The flow rate and GPM in your house should be set such that the heater can operate at optimal performance. How Are Navien Tankless Water Heaters To Be Cleaned Properly? You're in Houston and it is as humid as it is here in Florida and right now we're very humid. I changed it, but it now leaks from the condensation hose. Fortunately, you can minimize the chances of it happening to a great extent if you follow some basic practices. Check for other issues: If the pressure valve is not the root cause, another issue may be affecting the water heater. Tripped breaker. If we compare, this time is lower than other units. However, keep in mind that this liquid can corrode certain materials such as mental. When your Navien condensate trap leaking is making your boiler malfunction, the best solution is to call an expert and have it cleaned. Check the Gas Line. Siphoning Water Solution: 3. Check for other issues: If the pressure valve is not the root cause, another issue may be affecting the water heater. That looks like an old CH unit that have been discontinued but Navien still warranties them. When too much water pressure builds up, it can cause a lot of issues and burst certain components. As for the pipes that are cracked and leaking, theyll have to be replaced. Fingers crossed We have a 2 y/o 240A and it has the same oily condensation on the black plastic parts. Just like hard water, acidic water is also bad for your water heater. It can damage anything prone to corrosion. It contains minerals like Calcium and magnesium that can damage vital components including the heat exchanger. When water leaks from this pipe, it flows from the pressure relief valve down through the overflow pipe and then onto the earth. Leaks can also stem from blocked pipes or mineral buildup from hard water. Clean the condensate trap The condensate trap is located at the bottom of the unit. My 2 yr-old Navien heater has apparently been leaking for quite some time. The temperature of flue gases decreases rapidly during this process, going down to 50 from 130. Here are our top tips to make sure that your tankless water heaters dont start leaking anytime soon: When you ignore installing the tankless water heater as per the instructions of the manufacturer, making mistakes becomes inevitable. There is a simple solution to make sure that theres little to no damage to your property when your tankless water heater starts leaking. I Also noticed a wire harness that was resting above the boiler. The 2. So, even if theres a leak, its not likely that itll do any major damage. To clean the trap, remove the metal wire clip under the bottom of the cabinet and pull the cup out of the bottom of the trap. When you notice your water heater leaking, close off the water supply valve leading to the tank (it should be labelled cold somewhere on top of the tank). The tech said he would ship a new o-ring for the pump cap but he was not sure about the droplets on bottom of heat exchanger. Its a Shut off the water supply valve on the inlet to the water heater. Place a bucket underneath the water heater to catch water. You can place a drain pan under the heater if you see water coming out of the condensate drain. Its unlikely for tankless water heaters to leak anyways. A condensate trap may get blocked over time due to debris accumulation. Firstly, problems associated with any condensate system element are usually minor. Navien O-Ring P18. Efficient, durable and high-performance products for any commercial application. There are two pipes connected to the top of your water heater tank. It takes a lot of expertise to fix these problems and its recommended to leave it to the hands of an expert. Alternatively, you can turn off the water supply at the main water. The drain valve is located at the bottom of the unit and is used to remove excess water from the tankless water heater. The unit is configured for scheduled recirculate times. Compare it to the trap in your sink or toilet in both cases, the trap is used to make a body of water that prevents fume movement. Check the Thermostat Temperature Setting. I removed the cover and noticed the top of the pump was leaking (where the red cap is) and the bottom of the heat exchanger was covered with brown oily drops. But a better and more visually pleasing solution would be to connect the condensate drain to the sink with a pipe. All other causes are electrical. A bad Flow sensor. Open various warm water fixtures within your home. Now the bad news. Then, turn off the water and gas supply to it. Once youre happy with the water pressure, you can stop adjusting. So, steer clear of getting a TPRV as thats not what you need. WebGenerally, Navien tankless water heater demands 4 hours for a successful installation. We recommend that you check it at least once every year. The first place to check is the plumbing pipes above the water heater. Consumers with recalled water heaters should immediately contact Navien to schedule a free repair. Water Hammering Solution: 5. I thought maybe the oily residue was from the Oils in the wire harness. Hence, you need to find out what caused the leaks so that you can fix it or have it replaced if necessary. Shut Off Cold Water Supply. This job is carried out by the expansion valve and you may also see a leak from there. Water heater was installed in 2014, so this leak developed after about 6 years in operation. Seeing your Navien tankless water heater leaking from the condensate drain indicates issues with the installation or the heat exchanger. Close cold water main. I have the the same issue: 3 yr young unit. This is the first thing I always check. There was defintley some backpressure of some sort and the vent eliminated it. If you frequently jump from heating to cooling, the metallic wall of the heat exchanger will contract and expand simultaneously. If you have identified that you have hard water, you need to flush the system and remove the sediment that has built up over time. Then restart; Remove and clean the inlet water strainer; Check the automatic flow adjustment valve; Flush the tankless water heater; Available Parts: Water Inlet Filter; Water Adjustment Valve: NPE-A; Unfortunately, thats not the case with heat exchangers. Without water flow, the control board will not activate the flame to heat the water. This is an indication that the valve isn't water tight, and the leak will only get worse with time. If the venting isnt done properly, its a good idea to call a professional plumber to take a look at the issue. Now the bad news. A Defective Thermostat. Just install a drain pan. When you notice your water heater leaking, close off the water supply valve leading to the tank (it should be labelled cold somewhere on top of the tank). The first places to check if it appears that you have a leak from the bottom of your water heater are the drain valve and temperature & pressure relief valve (T&P valve). No more leak. We get it, but (1) terrylove.com can't live without ads, and (2) ad blockers can cause issues with videos and comments. Navien Recalls Tankless Water Heaters Due to Risk of Carbon Monoxide Poisoning Consumers should immediately stop using and check the model and manufacture year information on their Navien water heater. Attach the cold water intake hose to the sump pump. Manage Settings Leaking from the Bottom of the Tank: Finding the Source. Look at the Water Supply Lines. When you replace the trap, ensure that the o-ring is correctly in place. JavaScript is disabled. You can easily replace them independently even if you have little experience working with the required tools. Check for leaks, clogs, and other issues causing high pressure or other problems. The venting job must also be done conforming to the instructions of the manufacturer. If none are discovered, the device should be left detached, and the breaker should be turned back on. Lack of adequate venting will cause water leakage, and it is a well-known culprit for tankless water heaters. Rick is online now Continue Related HVAC Questions It causes pinholes in the tankless water heater which may promote leaking with time. May 21, 2017. To minimize these changes, check your waters acidity level and neutralize it if possible. If your tankless water heater is dripping from the bottom, its most likely due to a loose or damaged drain valve. If condensation continues, it might fall on the entire system. Leaks Solution: 9. The drip is coming from the bottom, middle of the unit where there is a white cap. Clean the air filter All Navien units (water heaters, combi-boilers and boilers) have inlet air screens inside the cabinet just below the air intake collar to prevent debris from being pulled into the blower, burner and heat exchanger assembly. Your feedback is always appreciated. When I tried to clean it, it seemed to be a brown oily substance: I tried my best to clean the condensation and any of the stains I could get to. Thanks. At this point, the boiler will stop working automatically for safety reasons. The NPE-2 series offers ultra-high efficiency up to 0.96 UEF to keep your utility bills low, endless hot water, and exclusive ComfortFlow technology with a built-in recirculation pump and buffer tank. Tankless water heaters primarily develop leaks is due to improper installation. The boiler condensate created within your appliances will safely be drained along with wastewater. Partially Closed Valves Solution: 6. In a residential area, the water pressure shouldnt exceed 30 PSI. WebGenerally, Navien tankless water heater demands 4 hours for a successful installation. Leak-related issues cause this problem most often, as when theres a leak a water heater will continuously work to replace the leaking water. Metal-based fittings cannot be used as the condensate itself is a bit acidic in nature and will corrode metal. It causes pinholes in the tankless water heater which may promote leaking with time. My 2 yr-old Navien heater has apparently been leaking for quite some time. Eventually, theyll get to the water heater and damage important components. Pressure shouldnt exceed 30 PSI leaks from this pipe, it can be solved installing. Happening to a loose or damaged drain valve try and clean out the weep hole safely be along. Follow some basic practices wet all around the metallic wall of the heat exchanger extension pipe or any! 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