Switch the tankless water heater off and inspect the condition and wiring of the valve. Having a little knowledge about the error codes means that you might be able to fix the issue without needing to call out an engineer. Then, reinstall the filter and secure it with the screw. First off, inspect the check valves and ensure its operating properly. Press the reset button to reset your device. When the water adjustment valve will perform abnormally, the unit will let you know about it by throwing the diagnostic code e434. You also have to flush the heat exchanger. Fortunately, I already covered a guide on Navien Tankless Water Heater Maintenance. Complete Guide 2022, How Much Propane Does A Tankless Water Heater Use? when the flue temperature e xceeds 230 F (110 C) for more. In the case of an error code E515, the PCB, PCBs monitoring device, igniter, fan, dual venturi, and the 3-way valve should all be inspected. Consequently, it causes your water heater to flash the code e004. Our technicians will provide you with a unique code to establish a connection between your smartphone and the Navien technician's desktop. Non-condensing. Navien error code 003 how to fix indicates that there is an ignition failure in your unit. All Plumbers are screened, licensed, and insured. It indicates that there is something wrong with limit control. Check if the flow switch is in the off or on position and the thermal blocks resistance. Then, release the blockage from the cold water inlet filter and flush the heat exchanger. Navien is renowned for producing high-quality water heaters worldwide. When a problem arises, your device will exhibit an error code on its LCD on the front. If yes, you must replace the dual venturi. CODE:E615PROBLEM:Abnormality in input and memory. So yes, the expansion tank or system being improperly pressurized could create that error condition. All Navien Products. First off, check the air intake filter to ensure whether there is any obstruction or not. Get a fixed price quote in 20 seconds online here. Diagnostic code e016 displayed on your Navien Tankless Water Heater means the heat exchanger is getting overheated. Solution: Space-saving high-efficiency condensing boilers provide the ultimate heating and comfort experience. Your tankless unit will throw this error message due to the following reasons: If you want to reset the diagnostic code E003 and ignite the unit correctly, ensure: To learn more about this, you can check this article: Navien Tankless Water Heater Code E003. Though we share resources, information, and educational guide on plumbing & DIY projects, the content here is not a substitute for professional guidance. If the dual venturi wiring connection is not correct, check the wiring and fix it. If the error code E109 pops up on the front panel display, understand the fan motor is operating abnormally. Seems like it probably wasn't--or is shut-off--otherwise it would have automatically brought the pressure back up to where it should be. FIX: Confirm all water supply and return lines are open. You can contact a plumber if necessary. To fix the Navien error code E593, you need to inspect if the panel keys operate as they should. It shows that the water adjustment valve is not operating properly. Check the wiring and cold water inlet 2 thermistor and make sure both are in good condition. Error code E439 can be caused by a faulty flow sensor, PCB, or no cold water supply. Abnormal Auto feeder valve (make-up water) Call or Text Blue Conservations trained Navien specialists at 484-469-0718. I highly suggest you check the thermistor wiring on both cold water inlet1 and 2. I highly recommend you contact the Navient Technical Support Team at 1-800-519-8794. An open or shorted sensor causes this issue. You can read this article where I broke down how to clean those two water heater elements. JavaScript is disabled. This is the combi boiler, correct? Navien error code E787 indicates that there has been a problem while the unit has been reset. It provides information about the problem with the fan motor. Below we will offer you a breakdown of different Navien water heater error codes and their solutions. The heating system side doesn't usually have to be more than half that. Check and remove the intake filter from the heater. Turn off the device for 30 minutes and then restart it. Check with the manufacturer for recommendations on water pressure.My specific unit is a Navien tankless water heater/furnace model NCB-240e. CODE:E060PROBLEM:Abnormality in dual venturi. If yes, turn off the unit and dry the fan connector. Did a reset and turned off/on the unit, then turned on the red valve in the screenshot (posted earlier and denoted by arrow), that made the pressure climb up on the screen. My [Navien NCB-240E] [LP] keeps losing pressure and throwing an error code. To fix Navien error code E046, check the condition of the wiring at the heat exchanger thermistor. Its because I broke down the meaning and the reason behind a specific error message. This is a complete guide on Navien Tankless Water Heater Error Codes. An interesting observation is this all happened today early morning when I turned the heat on the second floor. I have heat on all the floor and DHW. Error code e.003. CODE:E109PROBLEM:Abnormality in fan motor. This article will provide you detailed information about Navien flow sensor problems and error codes along with their meaning and recommended fix. CODE: E434. CODE:E439PROBLEM:Abnormality in flow sensor. CODE: E432. A you hearing any sizzle, hum, or popping sounds just before it stops? Normally, household water pressure should be somewhere in the 40-60 psi range. We service all major tankless makes and models and specialize in Rinnai, Navien, A.O. Check if the auto feeder valve works normally. Navien error code E218 means there is a problem with the operation of the heating return thermistor. Check and ensure the water pressure sensor and wiring are in good working condition, and there are no loose connections. Hope New Member Messages 11 Reaction score 0 Points 1 Whether you need a new water heater, a sink repair, or a toilet fixed We Can Help! I bet the following reasons are responsible for displaying the error code: First, visually inspect the wiring of the dual venturi and make sure it doesnt get cracked. When I turn the faucet to hot the water pressure at the faucet doesn't change, but the system isn't heating. Examine the thermistors condition and pump wiring connectors. From this article, what you will learn: This chapter will reveal both the meaning and how you reset a specific error code. This guide will discuss and go over the Navien tankless water heater error codes, their meaning, troubleshooting, and more. If it appears filthy, clean it with an emery cloth. In this article, well look at the codes shown on Navien boilers when things arent working as they should. I've been told the heat and domestic water are separate. You can easily understand whether the dual venturi is operating correctly or not by running the water heater in dual venturi test mode. A place for homeowners, renters, tenants, business owners or anyone with a general question about their HVAC system. Well, that is apart from coming home to a cold house when you were expecting it to be toasty warm! Navien Condensing Boiler Domestic Hot Water Ratings; Model 1 NFC-250/200H; Input Ratings: Min: 13,000 BTU/h: Max: 210,000 BTU/h: Other Domestic Hot Water Specifications; High-efficiency condensing and non-condensing tankless water heaters offer endless hot water and reduce gas usage. (Closed Christmas Day and New Year Day) Is your water heater not working properly or displaying an odd number on display, but you dont know what it means? Heat was already on in one of the zones on the first floor since last night. Applications are subject to affordability, application, status and lending criteria. To learn how to perform that test, check out this guide. I've been conducting professional home inspections since 2002. Ensure there are no loose connections and the wiring is not damaged. 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. He has a good standing reputation for superior skills in heating, air conditioning, hot water tanks, and indoor air quality systems. I just turned on the heating on the second floor again and 15 minutes into it, couldn't feel the heat. Copyright 2020 - 2022 | All rights reserved. Keep in mind, there are two systems at work. If the DHW cold water valve is open, check the connections and the water pressure sensor. So the code appears and boiler turns off itself when I turn the heat on second floor on. It will be better if you call a certified electrician to inspect the outlet electrically. Have a look in your manual for instructions on how to do this for your boiler because the method can vary between models. Navien error code E002 means there is low pressure on the heating side. It means the heat exchanger is overheated. Link to water pressure sensor:https://amzn.to/3m5OzujFULL DISCLAIMER: I am not a plumber or HVAC tech. If required, replace the thermistor. How to clear the error message from the display? The consent submitted will only be used for data processing originating from this website. Most commonly they get clogged or stop operating causing the boiler to get low on pressure. An open or shorted sensor causes the Navien error code E441. Check direction of the internal 2-way valve. You can easily detect this problem. Luckily your boiler will indicate what the problem is by displaying an error code on the control panel. If your unit is generating lukewarm water, try to increase the temperature. A rise of 7 psi is a bit high for a low volume system, which could indicate an improper charge on the expansion tank if it's all fin-tube baseboard. So, detach the grounding from the grounding terminal inside the unit and ensure the PCB is working normally. Flush the heat exchanger. To fix this error code, inspect the heating supply thermistors condition and the pump wiring connectors. If needed, call a licensed technician. If needed, replace the sensor. It specializes in the production of gas, diesel boilers. In addition to that, check whether the igniter is producing a spark. Tankless machines integrate complex technology, so errors and problems can occur at any moment. Error Code E001 On Navien Combi-Boiler indicates the heat exchanger gets overheated due to a malfunctioning internal pump. Measure the pressure sensors output voltage and ensure it is within range. Manage Settings Next, inspect the fan connector to see whether it gets wet or not. Just do what the corrective action you need to take to erase the code. CODE:E445PROBLEM:Abnormality in bypass mixing valve. It will shut off the unit automatically when water temperature exceeds 197.6 F in the heat exchanger. Navien error code E060 means a problem with the dual venturi limit switch. This number indicates that the water pressure is high. PROBLEM: Abnormality in circulation pump. It shows that the DIP switch setting has some problems. Add make-up water to the system if necessary. Hi everyone, hoping you guys can help me. I bled the system and now its at 10.2 PSI cold/inactive and 17.2 PSI when running. Examine the controllers condition and replace it if required. Most of those PRVs are factory set at 12 psi (although you can adjust them.) To fix it, check the thermistors condition and wiring. My understanding is that the auto feeder should call for water to bring the unit back to normal pressure. 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. If so, this guide is for you. If necessary, call for a service. | Home Improvement 2022Continue, Have you ever taken a bath when the tankless water heater was off? The most common cause of this problem is low pressure in our heating system. Abnormal Operation: Limit Control Contact Technical Support at 1-800-519-8794 or a Licensed Navien Technician, Abnormal operation: Exhaust Thermostat Contact Technical Support at 1-800-519-8794 or a Licensed Navien Technician, Error Code E060: Abnormal Operation: Dual Venturi Contact Technical Support at 1-800-519-8794 or a Licensed Navien Technician. Legal Disclosure:Lildutchuncle.com provides and shares information on plumbing, heating & air quality, home improvement, and other DIY projects. Our Texas master plumbing license number is M11171. . What have you tried so far? And finally, verify the wire connection between the fan motor and the PCB is secure. Navien error code E593 is caused by a problem with the operation of the front panel keys. Admirable Complete Guide, How Many Amps Does A Tankless Water Heater Use? Even with the best equipment, sometimes things may not go as planned. The flashing code e003 on Navien Tankless Water Heater indicates there is a problem with the ignition system. Allow it to dry for some time before fixing it again. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. The unit will cease working if the exhaust temperature exceeds 230F (110 C) for more than 10 seconds. Keeps shutting down displaying these codes E351 E352 E353 Contractor's Assistant: Who makes your appliance? So at this time, heat on the 1st and second floor was on and my baseboards and radiators were warming up nicely. Heating supply thermistor open or short circuit Call or Text Blue Conservations trained Navien specialists at 484-469-0718. CODE:E782PROBLEM:Abnormality in main panel communication. Navien error code E205 indicates a problem with the operation of the heating supply thermistor. Error Code E441 And E445 The error number E441 indicates that there is an open thermistor or a short circuit in the system. Next, I suggest you check the flame rod to see whether scale forms on it or not. Inspect the condition of the controller and, if necessary, replace it. Another simple way to know if the venturi is working correctly or not- is to notice if the dual venturi opens or closes repeatedly. Lastly, adjust the water pressure or fix the issue responsible for low water pressure. Theyll be able to work out precisely what might be causing the problem and suggest ways of getting it fixed. If you find any leak, fix the leaking issue. An open or shorted sensor causes the Navien error code E432. The heater turns off automatically when the flue pipe surpasses 149 degrees Fahrenheit. Why is Your Water Heater Leaking From Overflow Pipe? Complete Guide 2022Continue, Do you want to know how much propane does a tankless water heater use? If they get damaged, repair the wires. If this occurs, the boiler initiates shutdown. If there is a problem with the hot water outlet thermistor, your Navien water heater will throw the fault code E407. Then, remove the screw that holds the air intake filter in its place. You can change the cold water inlet thermistor if necessary. Thanks for the detailed reply. Then, turn it on again. Pressure problems can often be quickly sorted out without needing to call in an engineer. The E615 tells you about the irregularity in input and memory. Navien heater. Remove the intake filter and properly wash it using a brush beneath running water. I called Navien support and was told to read the PSI after I plug out and in the system. Navien error code E004 is an indication that the unit is detecting a false flame. We don't tend to provide any plumbing advice or any advice that should come from a certified professional. There are a plethora of different Navien error codes e351 that may be used to assist in the resolution of the issue. If the pressure doesnt climb up to 5 to 7 PSI (approximately), I bet the recirculation pump is at fault. On your Navien Tankless Water Heater, the fault code e438 indicates the recirculation pump is operating abnormally. The original one was replaced about two years ago. According to the manual, the fault code e030 is the result of an overheated exhaust. Our finance provider will do a credit assessment of your circumstances when you apply. Bad wiring to the water adjustment valve or the valve itself is defective is the reason behind this water heater issue. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. I found the pressure drops 1psi everyday, but not in daytime. If you live in an area that experiences routine blackouts or power failures, you may need to look into a battery backup power supply for your tankless water heater. Get FREE quotes from licensed Plumbers in your area today. Street pressure must be connected to the 1/2" thread connection on the bottom and left turned on. It may look like a technical piece, Read More How To Turn On Water Heater? 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. CODE:E434PROBLEM:Abnormality in water adjustment valve. Complete Guide 2022, How To Fix Your Water Heater Leaking From The Top 2022, Water Heater Leaking From The Bottom? Navien error code E110 means there is an exhaust blockage. Your machine will switch off and on repeatedly. 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. Take the note of the standing system pressure displayed on the front panel. We're on a water well and have a fairly robust water filtration system that I believe IS causing low pressure is the house. Turn off the device for half an hour and confirm everything is working properly. So lets take a look. Change the thermistor if needed. I went to the 2nd floor and bled the radiators again, came downstairs and boiler was on and the pressure was around 2o psi. This is what the error code E046 stands for. When they both stop working, it indicates that there is some major issue with the device itself. If the error code persists, measure the PCBs voltage and replace the fan if the voltage is within spec. Next, check the resistance of the high limit switch. Once connected, our technician will be able to see what is occurring, pause video, draw on the screen, and save photos. If the problem persists after reset, replace the APS as soon as possible. Just today. Navien error code E434 means there is a problem with the water adjustment valve. There is a Navien NCB-240E installed in my house one year ago. We feature Rinnai Navien, and Rheem water heaters. If the water pressure sensor senses low water level as the heating pipe pressure is low, the system stops operation of the boiler, and refills water automatically. You may also need to restart the unit to fix this error code. Whether you need a new water heater, a sink repair, or a toilet fixed We Can Help! Otherwise, you will not get sufficient power supply to turn the unit on. 1. CODE:E736PROBLEM:Abnormality in cascade communication. You can mostly troubleshoot an issue on your own by using some tools, but you will have to hire professional services to fix complex issues. Heats both domestic hot water and provides hydronic heating for the house? 1/2" gas pipe capability up to 24' (subject to local codes). CODE:E593PROBLEM:Abnormality in front panel key. I did it twice now to no avail. 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. Call or Text Blue Conservations trained Navien specialists at 484-469-0718. An open or shorted thermistor can cause it. Space-saving high-efficiency condensing boilers provide the ultimate home heating and comfort experience.