It's not unusual for systems to lose a LITTLE pressure over time. Damage wiring to the thermistor at the hot water outlet can also create this problem. FIX:Confirm proper grounding of electrical cord. Navien Technical Supportoffersreal time remote video support assistance throughVisual Support - RemoteCallon your Apple or Android smartphone. After about 15 minutes, one of the cast iron taco circulator pump, second from the right started leaking so I turned the heat off altogether on each floor. First off, check the air intake filter to ensure whether there is any obstruction or not. CODE:E421PROBLEM:Thermistor open or short circuited (cold water inlet 1). The Navien Tankless Water Heater requires a sufficient amount of air pressure for proper ignition. Turn off the device for 30 minutes and then restart it. Confirm the thermistor and wiring is in good condition. Our finance provider will do a credit assessment of your circumstances when you apply. This error code may be fixed by switching off the unit, draining the water to release the pressure, and switching it back on. Hi everyone, hoping you guys can help me. Keeps shutting down displaying these codes E351 E352 E353. An open or shorted sensor can cause Navien error code E740. Check direction of the internal 2-way valve. If your unit is generating lukewarm water, try to increase the temperature. Protect your water supply and your water heating equipment with eco-friendly water treatment solutions. Flush the heat exchanger. CODE: E439. This article will provide you detailed information about Navien flow sensor problems and error codes along with their meaning and recommended fix. Then, reinstall the filter and secure it with the screw. If water is supplied by auto feeder valve open over 5 minutes, the error (E351) is detected and displayed on the front panel. It means the cold water inlet 1 thermistor is not operating well. A place for homeowners, renters, tenants, business owners or anyone with a general question about their HVAC system. It means the heat exchanger is overheated. from the Austin, TX Better Business Bureau. Clean or replace the igniter electrode or the PCB if necessary. To fix the issue, you should either replace the recirculation pump or purge the air out of the pump. Measure the pressure sensors output voltage and ensure it is within range. Ignition Failure- Ensure that the main gas supply valve is open, False Flame Detection Ensure that the electrical cord is properly grounded. This guide will discuss and go over the Navien tankless water heater error codes, their meaning, troubleshooting, and more. This code indicates the unusual operation of the PCB. We have a how-to guide for tankless water heater maintenance. I went to the 2nd floor and bled the radiators again, came downstairs and boiler was on and the pressure was around 2o psi. Tankless water heaters last 20 years on average and during that time youre sure to have at least one of these Navien error codes. To troubleshoot Navien error code E109, check and clean, if necessary, the air intake filter and the fan motor. In this article, well look at the codes shown on Navien boilers when things arent working as they should. Water overflows through condensed water hose. As An Amazon Affiliate We Earn From Qualifying Purchases But This Does Not Affect Price Of Product. He bled the system of air and brought the pressure back (Now its at 31.5 psi) and everything started working great. Flush the heat exchanger. Secondly, ensure you bleed the recirculation pump before operating it. Condensing combi-boilers deliver high-efficiency endless hot water and space heating in one compact unit. If necessary, replace them all. Virtually all systems, if they are tied into city water to auto-feed the heater side, must run through a pressure reducing valve to bring the pressure down. CODE: E003PROBLEM: Ignition failure in your tankless water heater. You can understand it by running a component test. Navien error code E593 is caused by a problem with the operation of the front panel keys. Well, it is a logical query if your unit is powered by propane fuel. To troubleshoot and fix Navien error code E517, you need to check the dip switches on the units front panel and the PCB. The bypass mixing valve has failed, as shown by the diagnostic code E445 on the computer. The flashing code e003 on Navien Tankless Water Heater indicates there is a problem with the ignition system. Or is it possible we have a bad WPS? Applications are subject to affordability, application, status and lending criteria. Also, check the feeder valve and pressure relief valves activity. Navien Now Doing Business in Canada as Navien Canada, Inc. Navien Begins Shipping PeakFlowC Commercial Scale Prevention Systems. Most commonly they get clogged or stop operating causing the boiler to get low on pressure. An example of data being processed may be a unique identifier stored in a cookie. Wash it under the water with a brush, let it dry, and then place it back. Complete Guide 2022, How Much Propane Does A Tankless Water Heater Use? Navien error code E016 means the heat exchanger is overheating. Takagi Water Heater Error Codes [Ultimate Guide], Navien Tankless Water Heater Error Codes [Complete List], Navien E001 Error Code (Overheating Heat Exchanger), Error Code E016 (Overheating of Heat Exchanger), Error Code E046 (Abnormal operation of limit control), Error Code E060 (Malfunctioning Dual Venturi), Error Code E109 (Abnormal fan motor operation), Navien Error Codes E110 (Abnormal Air Pressure), Navien Error Codes E351 (Abnormal Auto Feeder Valve), Error Code E407 (Hot Water Outlet Thermistor Issue), Error Codes E421, E432 (Thermistor Issue), Error Code E434 (Abnormal Water Adjustment Valve Operation), Navien Tankless Water Heater Error Code 438, Navien Tankless Water Heater Humming Noise [Fixed]. And the boiler started losing pressure down to 5.8psi and displayed E351 code again. CODE:E740PROBLEM:Abnormality in outdoor temperature sensor. Check that article out to learn how to clean and service the tankless unit. Navien error code E782 indicates a communication error within the main panel. Check the strainer and the heat exchanger. This never happens when the unit is heating the house. The Navien boiler error code e302 also relates to low pressure in your system. To fix this error code, check if there is water flow while the cascade system is switched off. To fix it, check the thermistors condition and wiring. Navien error code E432 is a sign of a problem with the cold water inlet 2 thermistor. How To Reset Navien Tankless Water Heater? Smith . The Navien CH has a built-in electronic feeder. I called Navien support and was told to read the PSI after I plug out and in the system. NPES2 Series > NPE-150S2 > NPE-180S2 > NPE-210S2 > NPE-240S2. Get a fixed price quote in 20 seconds online here. Although not a pleasant experience, this error code, on the other hand, can help you determine what is wrong with your tankless water heater so that you can take appropriate action. Examine the controllers condition and replace it if required. This error code can be caused by condensate blockage as well. The E760 informs you that its time to flush your heater. It may look like a technical piece, Read More How To Turn On Water Heater? Check the left drain valve of the main heat exchanger. If necessary, replace the sensor. Yes, E351 is low water pressure. Navien error code E480 means there is a problem with the external tank thermistor, typically caused by an open (at temperatures below 14F) or shorted sensor. One in the basement, two on the first floor and one on the second floor. Read the users Navien nr-240a manual to get information on how to flush the heat exchanger and how to reset remote for Navien tankless water heater. When you see this code on display, it becomes compulsory to grab information about how to reset Navien tankless water heater. This can happen because of dirty air intake filters. NAVIEN MODEL NCB-210E (NG) 2 weeks took cover off no leaks Ask an Expert Home Improvement Questions HVAC Questions Keeps shutting down displaying these codes E351 E352 E353. The answer is- dirty air intake filter. However, I don't want to keep the filter in bypass while we're home as the water is unsafe to drink. Manage Settings It serves a big house. If your Navien is displaying an error code E302, check the water feeder valve and the water pressure and the water pressure relief valve. Theres nothing worse than turning on the tap and getting cold water when you were expecting hot. It shows that the heating return thermistor is not working correctly. Please read rules before posting! If the error code E109 pops up on the front panel display, understand the fan motor is operating abnormally. To learn how to clean the air intake filter, you can read this guide: Navien Tankless Water Heater Maintenance. Besides, your Navien unit can also show the error message E001 if there is too much air in the recirculation pump. To fix this error code, inspect the heating supply thermistors condition and the pump wiring connectors. Check if the auto feeder valve works normally. Cons Of a Tankless Water Heater? Non-condensing. To troubleshoot the Navien error code E782, inspect the condition and operation of the PCB. You can change the tank thermistor if needed. Inspect the condition of the controller and, if necessary, replace it. It tells you that there was a flame loss. There are a plethora of different Navien error codes e351 that may be used to assist in the resolution of the issue. High-efficiency condensing and non-condensing tankless water heaters offer endless hot water and reduce gas usage. This is the combi boiler, correct? Navien error code E785 means there is a problem with the operation of the external flow switch. So, it will be worth reading the article. However, it will be best if you call a certified technician. I highly suggest you check the thermistor wiring on both cold water inlet1 and 2. In Dallas tx. They operate 1.5X better than traditional tank storage machines. Its a small device adjoining, Read More How To Clean Thermocouple On Water Heater Complete GuideContinue, Tankless water heaters are a vital home appliance that produces warm water for our bathrooms, sinks, washing machines, and dishwashers. The unit generally pops this fault code on the display if you dont plug the unit into a properly grounded electric outlet. It's a pretty normal rise if it's cast iron radiators. Now, pull the flame rod wire and remove the flame rod. Many contractors make the mistake of putting a boiler feed pressure reducing valve factory set at 12lbs. In most cases, the unit will flash this error message because of an electrically shorted thermistor. Over the past few years, tankless water heaters have garnered a lot of hype, all because of their knack to deliver you a limitless amount of seamlessly warm water. Generally, the following reasons are responsible for the overheating heat exchanger issue: To erase the error code E016, you should inspect both the cold water inlet filter and the heat exchanger for blockage. However, the low pressure causing the error is on the domestic side. Navien boiler error codes Navien is a manufacturer of various universal energy equipment in Korea. Before replacing the recirculation pump, verify whether the pump is functioning properly or not. Alternatively, you can contact the technical support team at 1-800-519-8794 for help. If not, replace it. than 10 seconds. Apparently the pressure is low and need to fill up. (Closed Christmas Day and New Year Day) Error code 351 was flashing on the LCD screen with a red wrench symbol as well. What have you tried so far? NPEA2 Series > NPE-180A2 > NPE-210A2 > NPE-240A2. Various factors can disturb the effective operation of the water heating system; a damaged or faulty heating component is one of the most, Read More How To Test The Water Heater Element Complete Step By Step Guide 2021Continue. Simply going through the reset process once more can often clear the problem and quickly have everything working again. PROBLEM: Abnormality in water adjustment valve. Whether you have installed a new heater or moved into an apartment that has been empty for a long time, you need to know how to turn on water heater. Another simple way to know if the venturi is working correctly or not- is to notice if the dual venturi opens or closes repeatedly. Given the circumstances could the filter actually be the culprit? Inspect and clean the filter in cold water inlet. Abnormal operation: DIP switch setting Call or Text Blue Conservations trained Navien specialists at 484-469-0718. Ensure that the electrical cord is properly grounded, Turn off the system for at least 30 minutes, then restart it, Ensure that the exhaust pipe is free of obstructions. The plumber who did the install said the filter is causing the issue. It means there is some issue with the flow sensor or switch. Tankless Water Heaters. Press the reset button to reset your device. I have a e351 code, gas, well we accidentally turned the valves outside to the left then had the issue - Answered by a verified HVAC Technician We use cookies to give you the best possible experience on our website. He obtained his Bachelor of Science degree from the University Of Texas at El Paso. Then, locate the air bleeder valve on the pump and release its cap to purge air out of the system. In this case, you should replace the check valve. Contractor Support is Crucial! CODE:E016PROBLEM:Overheated heat exchanger. Thats why Navien has staffed two world-class support centers with live technicians to make sure you get the help you need,when you need it. Copyright 2020 - 2022 | All rights reserved. When the water adjustment valve will perform abnormally, the unit will let you know about it by throwing the diagnostic code e434. Add make-up water to the system if necessary. But the problem came again in two weeks. Broken boiler? I have three radiators on the second floor so I bled their air thinking that may be the cause of the issue, turned on the heat on 2nd fl. You also have to flush the heat exchanger. E047. If it's much higher than that, it's murder on plumbing and fixture. If you get a reading below 1.0 Ohm, understand the limit control itself is at fault. Modern tankless units are capable of creating limitless hot water to cater to whole-house needs. Navien error code E060 means a problem with the dual venturi limit switch. That said, even the best combi boilers and best system boilers do come to an end of their life, and when its time to get a new one installed, its essential to have a really clear understanding of what costs are involved. off. It's usually during the day when it's warmer and we're also not home to use hot water. Secondly, verify you plug your water heater into a properly grounded electric outlet. Regarding this, use a multimeter and ensure it will give a voltage reading between AC 102-132V at the electric outlet. Fortunately, the brand has included numerous error codes to help you determine the issue easily.If you cannot figure out the exact meaning of Navien no hot water no error code, recite the users manual or read our guide on how to reset Navien tankless water heater. If needed, scrub it with a toothbrush. Yes its a combi boiler and I get my hot water + heat from it. Heat was already on in one of the zones on the first floor since last night. Read the manual on Navien tankless water heater how to reset. Boiler was still not on but I could tell it was trying to start working just by the sound of it. Examine the wiring and thermistors condition. Exhaust Overheat: exhaust limit switch shuts down the unit. When you have problems with your Navien boiler, its a priority to get it working as quickly as possible and without too much expense.
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