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Probably not. I've been conducting professional home inspections since 2002. Our finance provider will do a credit assessment of your circumstances when you apply. The original one was replaced about two years ago. NPNU Series 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. So, were going to take a look at those ones first and then at the end of the article youll find the complete list of Navien error codes. They operate 1.5X better than traditional tank storage machines. There are a huge number of distinct Navien error codes e351 that help with resolving the problem. See our article Can Water Heaters Be Installed Outside: What You Should Know for more information on outdoor tankless water heater models. The same holds true for Navien tankless water heaters. CODE:E736PROBLEM:Abnormality in cascade communication. So my Navien had a code E351 along with the ranch sign on. I called Navien support and was told to read the PSI after I plug out and in the system. 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. Help with return water dip switch settings (Navien NCB 240e), Navien Combi Boiler with Hydronic Air Handler. Navien error code E001 is caused by an overheating heat exchanger. If not, replace it. To fix this error, you may need to have a licensed contractor assess your units condition and replace the PCB if necessary. If necessary, replace the thermistor. Smith . A place for homeowners, renters, tenants, business owners or anyone with a general question about their HVAC system. Before replacing the recirculation pump, verify whether the pump is functioning properly or not. Abnormal operation: LWCO Check the LWCO wiring connection Ensure that the system water level is appropriate. Or is it possible we have a bad WPS? Keeps shutting down displaying these codes E351 E352 E353. My Navien stop working and I get a code E351. 3 years old. Locate the reset button on the heaters front control panel. Given the circumstances could the filter actually be the culprit? 1.) I highly suggest you check the thermistor wiring on both cold water inlet1 and 2. When I turn the faucet to hot the water pressure at the faucet doesn't change, but the system isn't heating. Examine the wiring and thermistors condition. If the error persists and nothing looks out of the ordinary, contact a licensed contractor to evaluate the condition of your Navien tankless water heater. If needed, replace the controller or the sensor. If necessary, replace the thermistor. Also, check the intake air filter, the ground wire, power supply, and the wiring at the heat exchanger. Ensure there are no loose connections and the wiring is not damaged. Some problems can be resolved by simply resetting the machine, while others will need further effort. Hot water outlet thermistor open or short circuit Call or Text Blue Conservations trained Navien specialists at 484-469-0718. Examine and confirm the pressure sensor and wiring are in good condition. How To Reset A Navien Water Heater? - ERNIEGRAVES CODE:E012PROBLEM:Flame loss. I've been told the heat and domestic water are separate. Next, I suggest you check the flame rod to see whether scale forms on it or not. Turn off the device for 30 minutes and then restart it. Copyright 2020 - 2022 | All rights reserved. I bled the system and now its at 10.2 PSI cold/inactive and 17.2 PSI when running. Heres How To Troubleshoot It 2022, Tankless Water Heater Frozen Do These Things To Fix It. Complete Guide 2022Continue, Do you want to know how much propane does a tankless water heater use? Luis Satisfied Customers Expert Luis is online now Related HVAC Questions Navien problems. Have a look in your manual for instructions on how to do this for your boiler because the method can vary between models. I'm a licensed Home Inspector, Certified Professional Inspector (CPI), Certified Master Inspector (CMI), and FHA 203k Consultant. Regarding this, reset the unit by pressing the Back button and ensure there is no call for heat. So lets take a look. If your Navien displays an error code E060, you need to check the dual venturi connection. Switch the tankless water heater off and inspect the condition and wiring of the valve. An open or shorted sensor can cause Navien error code E353. According to the manual, the fault code e030 is the result of an overheated exhaust. How To Reset Navien Tankless Water Heater? Switch it off the unit and inspect the condition of the APS. To fix it, check the thermistors condition and wiring. To fix this error code, inspect the heating supply thermistors condition and the pump wiring connectors. Take the note of the standing system pressure displayed on the front panel. Abnormal operation: main panel communication Call or Text Blue Conservations trained Navien specialists at 484-469-0718. Navien Manuals Water Heater NCB-150E Service manual Navien NCB-150E Service Manual Ncb-e condensing water heaters Also See for NCB-150E: Quick installation manual (4 pages) , Installation & operation manual (83 pages) , Installation & operation manual (13 pages) 1 2 3 4 Table Of Contents 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Just want to make sure we're on the same page. ^ No, he didn't. Admirable Complete Guide, How Many Amps Does A Tankless Water Heater Use? Cold water inlet thermistor open or short circuit Call or Text Blue Conservations trained Navien specialists at 484-469-0718. Whether youre looking at Navien combi boiler error codes or those for your system boiler, some issues are going to come up more often. However, the low pressure causing the error is on the domestic side. Credit is subject to age and status and is available to UK residents with a bank account in the UK aged 18 and over who have not been declared bankrupt of had CCJ or an IVA within the last 6 years. Waterheateradvisors.Com Is A Participant In The Amazon Services LLC Associates Program, An Affiliate Advertising Program Designed To Provide A Means For Sites To Earn Advertising Fees By Advertising And Linking To Amazon.Com. Abnormal operation: input and memory Call or Text Blue Conservations trained Navien specialists at 484-469-0718. It means there is some issue with a water pressure sensor. Navien error code E432 is a sign of a problem with the cold water inlet 2 thermistor. This error code can be caused by condensate blockage as well. If the error does not go away after resetting the unit, contact a licensed technician. Flush the heat exchanger. If the DHW cold water valve is open, check the connections and the water pressure sensor. Keeping it clean is critical to guarantee the long-lasting operation of your device. Attaching a picture of cast iron taco circulator pumps. Regarding this, get a multimeter and measure the resistance. So, it will be worth reading the article. However, I don't want to keep the filter in bypass while we're home as the water is unsafe to drink. One in the basement, two on the first floor and one on the second floor. The Navien boiler error code e302 also relates to low pressure in your system. Continue with Recommended Cookies. Please read rules before posting! Have a look in your manual for instructions on how to do this for your boiler because the method can vary between models. To inspect the flame rod, you should remove the front cover panel. CODE: E003PROBLEM: Ignition failure in your tankless water heater. Error Code E441 And E445 The error number E441 indicates that there is an open thermistor or a short circuit in the system. 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. Broken boiler? In this case, you should replace the check valve. Check and ensure the water pressure sensor and wiring are in good working condition, and there are no loose connections. Navien error code E434 means there is a problem with the water adjustment valve. Like any other home appliance, your tankless water heater will surprise you with an unexpected Navien error code 110 eventually. The Navien error code E434 can be caused by an open or shorter water adjustment valve. It detects the incoming water flow and then turns on the heater. First, turn the unit off for at least 30 minutes. Allow it to dry for some time before fixing it again. To troubleshoot the Navien error code E782, inspect the condition and operation of the PCB. The unit turned on and I heard a noise indicating the unit is turning itself own but then nothing happened and the psi remained around 5/6 psi. Call 800-519-8794 to get in contact with Navien technical assistance. An open or shorted sensor causes the Navien error code E432. If the dual venturi wiring connection is not correct, check the wiring and fix it. CODE:E782PROBLEM:Abnormality in main panel communication. It is a visible sign that your devices cold water inlet 2 thermistor is having some issues. If you have no hot water, you may have overwhelmed your tankless water heaters capacity or have at least one error code. 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. When the system is calling for heat I see a consistent 33 PSI. FIX:Inspect and clean the intake air filter. Navien tankless water heater E351 error code FIX - YouTube Inspect and clean the filter in cold water inlet. NPEA2 Series > NPE-180A2 > NPE-210A2 > NPE-240A2. Also, check the feeder valve and pressure relief valves activity. You can contact a plumber if necessary. Inspect and clean the filter in cold water inlet. 8 years. Unfortunately, its always at an inopportune time. Remove the inlet filter and wash it under the running water with the help of a brush. Navien error code E594 indicates a partial PCB communication error or an EEPROM error. The most common cause of this problem is low pressure in our heating system. Scan this QR code to download the app now. Just today. If the error code persists, measure the PCBs voltage and replace the fan if the voltage is within spec. The answer is- dirty air intake filter. If your unit is generating lukewarm water, try to increase the temperature. NPNE Series > NPN-160E > NPN-180E > NPN-199E. A flow sensor is a vital component of the tankless appliance. Ensure they are in good condition and properly connected to the PCB. On the other hand, if the dual venturi doesnt open and close continuously, I bet the controller is the culprit. 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. Or, you can call a certified plumber to deal with this issue. Inspect and clean intake air filter. To fix the issue, either check the wiring & repair it and replace the thermistor. To resolve this issue, you should check the wiring. It is an indicationthat your warm water outlet thermistor has some problem. Regarding this, use a multimeter and ensure it will give a voltage reading between AC 102-132V at the electric outlet. Navien error code E002 can be caused by low water pressure, so you have to ensure that the unit receives enough water. Turning on a zone changes system pressures everywhere on the system, but if it's already marginal pressure at the boiler any disturbance in pressure (even a transitory one) could conceivably get sensed as an error causing it to halt and spit the code. CODE: E434. Confirm the thermistor and wiring is in good condition. Was it enjoyable? Replace any parts if needed. PSI was 4.1. PSI was 4.1. Tankless Water Heaters. Turn off the device and find out the flow sensor, remove it, and blow on it. You have to inspect the sensors connectors to confirm they are not wet and fixed correctly. [Gas, Electric, Tankless Water Heaters Complete Guide 2021]Continue, What are the cons of a tankless water heater? But the problem came again in two weeks. Check the strainer and the heat exchanger. When an error code occurs, youll likely hear an audible beeping alarm. Turn off the device and examine the APSs condition. CODE:E760PROBLEM:Flushing/service alarm. Clean or replace the igniter electrode or the PCB if necessary. Navien e351 error code E351 - Abnormal Auto feeder valve 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. 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. We earn a commission if you purchase at no additional cost to you. If you get a reading below 1.0 Ohm, understand the limit control itself is at fault. The error code E441 informs about the open thermistor or short circuit problem. Navien Appliance Error Codes | Appliance Helpers Apparently the pressure is low and need to fill up. If there is a problem with the hot water outlet thermistor, your Navien water heater will throw the fault code E407. 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.