As an Amazon Associate, I Earn From Qualifying Purchases. So, lets dive in! With the breaker turned off, unplug the unit and check for leaks. If none are discovered, the device should be left detached, and the breaker should be turned back on. I have a tankless Navien water heater installed and it drips constantly when hot water is being used. Bad Installation. A bad Flow sensor. Get a flush kit and clean it so that it lasts for many years to come without any leaks. experience as a licensed oil & gas technician. Looks like water but when you touch it, it is definitely a brown oily substance. Lack of adequate venting will cause water leakage, and it is a well-known culprit for tankless water heaters. there is a sink Ask an Expert Home Improvement Questions HVAC Questions Rick, HVAC Supervisor 38,788 Satisfied Customers 50+ yrs. The PVC exhaust technology has made the installation easier. Navien phone support says there is no oil in the system that would cause this, but the substance on the bottom of the exchange was clearly a brown oily one. 1. JavaScript is disabled. If your heat exchanger is fine, a bad installation is the most likely culprit behind the leak. A drop in temperature makes the gases condense. If you have a pressure regulator in your house, you can use it to adjust the water pressure. WebWater leak inside unit: 1. For more information regarding maintenance procedures for your Navien units, please consult the operation manual. There appears to be high failure rates of the exhaust vent gasket at the sheet metal under the vent collar, and failures the combustion chamber WebTurn off the water heater for a minimum of 30-minutes. Mine is 1/2. Excessive sediment buildup. Obstruction In Pipes Solution: 10. Partially Closed Valves Solution: 6. First of all, shut off the gas supply to your frozen Rinnai tankless water heater. It also prevents scalding when you turn up the temperature on your heater. There appears to be high failure rates of the exhaust vent gasket at the sheet metal under the vent collar, and failures the combustion chamber If the venting isnt done properly, its a good idea to call a professional plumber to take a look at the issue. Step 3 will show you how. 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). If the temperature isnt too high, then youll have to replace the pressure relief valve. When water leaks from this pipe, it flows from the pressure relief valve down through the overflow pipe and then onto the earth. Navien NHB boilers have a screen on the return connection. If venting is not working correctly, condensation may occur inside the water heater, which leads to leakage problems. Take off the inlet filter on the cold water line. 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. Now, turn your Navien tankless water heater back on and check if there are any leaks. Water Hammering Solution: 5. We have also experienced some issues with non-constant hot water, but only at some sinks. Partially Closed Valves Solution: 6. Hence, you need to find out what caused the leaks so that you can fix it or have it replaced if necessary. The burning gas gets transformed back into a liquid and goes out through it. WebLeaks, poor insulation, sediment buildup, years of wear and tear, and loose connections can all cause a water heater to run continuously. There are electronic parts inside. 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. At times, the heat exchanger can leak at the top of the gasket. Look at the Water Supply Lines. Plus, the installation instructions are clear and simple to understand for even the most inexperienced user. Navien tankless water heater error codes, their meaning, and fixes Below are different Navien water heater error codes and their solutions; Error Code E003 No more leak. Small drip coming from the condensate syphon trap for a Navien water heater. As for the pipes that are cracked and leaking, theyll have to be replaced. How Are Navien Tankless Water Heaters To Be Cleaned Properly? If its set too high, it could be the cause of the temperature and pressure relief valve automatically opening and discharging water, resulting in the leak you see. #1. This job is carried out by the expansion valve and you may also see a leak from there. Attach the cold water intake hose to the sump pump. A bad Control Board. If this unit can operate without the cover on, put a fan on it for a few days to see if the condensation reduces or goes away. Excessive sediment buildup. 2. A tripped breaker on a tankless water heater is a common issue caused by several factors. If you dont find your tankless water heater dripping from the bottom anymore, then youve solved the problem. If the water is too hot, an excess of steam might occur, yielding too much pressure for your heater to hold. In a residential area, the water pressure shouldnt exceed 30 PSI. Navien O-Ring P16: E038: Abnormal circulation pump: 1. Most people think that tankless water heaters dont leak. If its set too high, it could be the cause of the temperature and pressure relief valve automatically opening and discharging water, resulting in the leak you see. Consumers with recalled water heaters should immediately contact Navien to schedule a free repair. A nice experience could quickly turn into a stressful one. Is the cabinet airtight or does it have grates for air flow? Even if you use common sense, youll realize that the water goes through the heater at some point. 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. Youd have to replace them in that situation. You can hire a plumber to do this job for you. Companies have started installing auto-siphons in condensate traps. Chances are, there is debris lodged inside that has to be cleaned. Just connect it to one of the pipes and get a reading. find and stop the leak; GPM in Tankless water heaters: How to calculate it to choose; How to reset a tankless water heater: An easy guide to Fix; Tankless Water Heater Expansion Tank: A Must This recall involves only Navien condensing tankless water heaters and combination boilers with model numbers NPE-180A, NPE-180S and NCB-180E that have been or will be converted from using natural gas to propane gas. Clear damage on the existing o-ring. How often should you change the pressure relief valve? The mixing valve makes sure that there are no temperature fluctuations and that you get water at ideal temperatures. It can easily cost you between $750 $1500 to replace the heat exchanger depending on the model youre using and your location. Troubleshooting Tankless Water Heater Error Codes, Navien Tankless Water Heater Leaking From Bottom [Reasons + Solutions], How To Prevent Heat Exchanger From Cracking. Hence, you need to find out what caused the leaks so that you can fix it or have it replaced if necessary. Attach the cold water intake hose to the sump pump. Check for other issues: If the pressure valve is not the root cause, another issue may be affecting the water heater. The drain valve is located at the bottom of the unit and is used to remove excess water from the tankless water heater. Tripped breaker. To minimize these changes, check your waters acidity level and neutralize it if possible. Without water flow, the control board will not activate the flame to heat the water. May 21, 2017. 10. On the other hand, high flow rates can create excessive water pressure and cause the heater to leak. You can call a plumber to change the drain valve for you, or purchase the part and do it yourself. However, that also means that the volume of condensate coming down the pipe during each wave is higher, and you would notice leakages more. WebNavien Premium Efficiency condensing tankless water heaters are the #1 selling high efficiency condensing tankless water heaters in North America. When your Navien condensate trap leaking is making your boiler malfunction, the best solution is to call an expert and have it cleaned. There was water at the bottom of the unit, but the board still seemed to be ok. Ended up having a plumber come take a look- they said that the diagnostic from the controller board wasn't where Navien said it should be, and the board as well as the mixing valve would need to be replaced. The drip is coming from the bottom, middle of the unit where there is a white cap. Check the Gas Line. If any particular ad is your REASON for blocking ads, please let us know. Clean the condensate trap The condensate trap is located at the bottom of the unit. With time, the water heater can get corroded and undergo lime build-up. Tankless Water Heater Dripping from Bottom. I also spoke to Navien and the tech there recommended condensate drains be 3/4 not 1/2. The first place to check is the plumbing pipes above the water heater. Just to close the loop on this, I installed a vent on the drain by putting in a secondary condensate bypass right to the pump and I'm good. I Also noticed a wire harness that was resting above the boiler. 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 minerals present in hard water will build up in the piping system over time. water leaking out of top and bottom of tankless hot water heater. So, did you find this article useful? Navien Tankless Water Heater Leaking From Bottom [Why & How To Fix] 1. If condensation continues, it might fall on the entire system. WebThe problem could be caused by any of the following problems. Once a certain level of water is stored in the trap, the siphon triggers a response within the system that siphons water out of the trap. We already mentioned why the condensate pipe has to be made of plastic and not metal due to the risk of corrosion. As for the flow rate, it shouldnt exceed 19 GPM. Tankless water heaters primarily develop leaks is due to improper installation. It may not display this or other websites correctly. Condensing combi-boilers deliver high-efficiency endless hot water and space heating in one compact unit. Add about 6 liters of vinegar to a clean bucket. If your tankless water heater leaking from the bottom, the overflow pipe can be the culprit. High water flow rates Alternatively, you can turn off the water supply at the main water. When your Navien condensate trap leaking is making your boiler malfunction, the best solution is to call an expert and have it cleaned. The company who installed it are coming Tuesday. Though heat exchangers dont last forever, there are a few things you can do to make sure that you can maximize how long they last. Heres an example of a pressure gauge reading thats too high. Dirty Flow Sensor Solution: 8. Each hour, a Navien boiler can produce up to 2 liters of condensation, otherwise termed boiler condensate. The condensate is taken out of the system through the wastewater outlet by using a condensate pipe. Combat Abrasives Sanding Belts (2023). Place a bucket underneath the water heater to catch water. You can easily take it off by using water pump pliers. 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. Harness that was resting above the water pressure heater is a well-known culprit for tankless heater! Check is the plumbing pipes above the boiler from bottom [ Why & to. 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