You are using an out of date browser. CODE:E046PROBLEM:Abnormality in limit control. The unit will shut down when the temperature in the flue exceeds 149 Fahrenheit (65 Celcius). Thanks for taking the time to reply. I'm absolutely stumped. If the DHW cold water valve is open, check the connections and the water pressure sensor. In most cases, the unit will flash this error message because of an electrically shorted thermistor. This issue frequently occurs in older models. To fix the Navien error code, E110 ensures nothing obstructs or blocks the exhaust pipe and that the exhaust pipe is clear. Admirable Complete Guide, How Many Amps Does A Tankless Water Heater Use? If not, replace it. Abnormal exhaust temperature. It serves a big house. Put it back and activate the unit. If this occurs, the boiler initiates shutdown. Navien tankless water heaters and boilers for residential and commercial applications use innovative high efficiency technology to provide a comfortable environment. You can replace the sensor if needed. Once you record the pressure in the system with no call for heat, run hot water and notice what happens to the pressure after turning the internal pump on. To troubleshoot the Navien error code E782, inspect the condition and operation of the PCB. 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. I bled the system and now its at 10.2 PSI cold/inactive and 17.2 PSI when running. Yes, E351 is low water pressure. CODE:E109PROBLEM:Abnormality in fan motor. So lets take a look. TheMillennialHomeowner 315 subscribers Subscribe 9K views 1 year ago Tips and tricks for preventative steps, as. CODE:E434PROBLEM:Abnormality in water adjustment valve. It's 12 degrees and I think the utility company is regulating the flow of gas. While we love, Read More 3 Cons Of A Tankless Water Heater? The Navien error code 110 informs about the strange air pressure. We earn a commission if you purchase at no additional cost to you. Ensure you plug your water heater into a properly grounded electric outlet. If you have an older heater, replace the flow sensor with the newest one; otherwise, install a 5-micron filter in the unit. You can change the cold water inlet thermistor if necessary. If the PCB is at fault, replace it. However, the low pressure causing the error is on the domestic side. 2021 Complete Guide, How To Clean Thermocouple On Water Heater Complete Guide, How To Test The Water Heater Element Complete Step By Step Guide 2021, Best Tankless Water Heater For Radiant Heat, How To Determine The Age Of A Water Heater? If this occurs, the boiler initiates shutdown. To fix this error code, inspect the heating supply thermistors condition and the pump wiring connectors. If the system was properly set to pressure when it was installed, somehow the pressure dropped. The plumber who did the install said the filter is causing the issue. I know that indicates low pressure - However, here is when things get tricky. Your machine will switch off and on repeatedly. Navien error code E047 is an indication of a problem in the operation of the exhaust thermistor. And lastly, verify the recirculation pump is working normally. According to. He bled the system of air and brought the pressure back (Now its at 31.5 psi) and everything started working great. With help of tech support we. Normally, household water pressure should be somewhere in the 40-60 psi range. Navien error code E594 indicates a partial PCB communication error or an EEPROM error. I did it twice now to no avail. One in the basement, two on the first floor and one on the second floor. Secondly, make sure the fan receives electric power for powering on. Get in touch with Navien technical support at 800-519-8794. All Plumbers are screened, licensed, and insured. Call or Text Blue Conservations trained Navien specialists at 484-469-0718. The E760 informs you that its time to flush your heater. It's usually during the day when it's warmer and we're also not home to use hot water. Applications are subject to affordability, application, status and lending criteria. I have the same unit. CODE: E439. You have to inspect the sensors connectors to confirm they are not wet and fixed correctly. Other Troubleshooting Tankless Water Heater Error Code Guides, Error Code E001: Heat Exchanger Overheating, Error Code E002: Low Pressure on the Heating Side, Error Code E011: High Pressure on Heating Side, Error Code E016: Heat Exchanger Overheating, Error Code E030: Abnormal Exhaust Temperature, Error Code E047: Exhaust Thermistor Error, Error Code E060: Dual Venturi Limit Switch Error, Error Code E109: Fan Motor Activity Error, Error Code E127: APS Error (Open, Short, Initial Value or No Response), Error Code E205: H/E Outlet Error: Thermistor Open or Short, Error Code E218: H/E Inlet Error: Thermistor Open or Short, Error Code E302: Low Water Pressure Error, Error Code E352: High Water Pressure Error, Error Code E353: Water Pressure Sensor Error, Error Code E407: Hot Water Outlet 1: Thermistor Open or Short, Error Code E421: Cold Water Inlet 1: Thermistor Open or Short, Error Code E432: Cold Water Inlet 2: Thermistor Open or Short, Error Code E434: Abnormality in Water Adjustment Valve, Error Code E438: Abnormality in Circulation Pump, Error Code E441: Hot Water Outlet 2: Thermistor Open or Short, Error Code E480: External Tank Thermistor Open or Short (System Boiler Thermistor Setting Only), Error Code E517: DIP Switch Setting Error, Error Code E594: Partial PCB Communication Error, Error Code E736: Abnormal Cascade Communication, Error Code E782: Main Panel Communication Error, Error Code E783: OT-remote Controller Error, Error Code E785: Abnormal Flow Switch Operation, overwhelmed your tankless water heaters capacity, Easy Maintenance Tips for Tankless Water Heaters w/Photos, battery backup power supply for your tankless water heater, heating supply thermistors condition and the pump, Can Water Heaters Be Installed Outside: What You Should Know, Troubleshooting Tankless Water Heater Error Codes: Rinnai, Troubleshooting Tankless Water Heater Error Codes: Rheem, Troubleshooting Tankless Water Heater Error Codes: Navien, Troubleshooting Tankless Water Heater Error Codes: Noritz, Troubleshooting Titan Tankless Water Heater Problems, Troubleshooting EcoSmart Tankless Water Heater Error Codes, Troubleshooting Tankless Water Heater Error Codes: Bosch. Tankless Water Heaters. Once connected, our technician will be able to see what is occurring, pause video, draw on the screen, and save photos. To fix Navien error code E001, you may need to clean the strainer and flush the heat exchanger. When they both stop working, it indicates that there is some major issue with the device itself. Navien error code E002 means there is low pressure on the heating side. I already covered a guide on Navien E438 Error Code. CODE:E004PROBLEM:False flame detection. Before replacing the recirculation pump, verify whether the pump is functioning properly or not. Also, make sure the outlet you use to power up your water heater is functional by plugging other electric appliances. Take the note of the standing system pressure displayed on the front panel. Water overflows through condensed water hose. 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. Regarding this, get a multimeter and measure the resistance. So, detach the grounding from the grounding terminal inside the unit and ensure the PCB is working normally. Auto RESET. I called Navien support and was told to read the PSI after I plug out and in the system. Ensure the flow rate and the PCB voltage at the pump are within spec and that the water circulates properly. Make sure the major electrical cord is grounded correctly. Turn off the unit and check the valves wiring and condition. Coast-to-Coast Coverage 7 days/week, 363 days per year. He has a good standing reputation for superior skills in heating, air conditioning, hot water tanks, and indoor air quality systems. Just as before, you may be able to fix this yourself by adding water to the boiler, which in turn increases the pressure. It means the false flame is detected in your device. If yes, you must replace the dual venturi. I'm still confused why your plumber would say that the heating side should somehow match city water pressure. Navien error code E441 is a sign of a problem with the hot water outlet 2 thermistor. Then, make sure the auto feeder valve is operating normally. Tankless machines integrate complex technology, so errors and problems can occur at any moment. Navien heater. This error code can be caused by condensate blockage as well. If necessary, replace the sensor. Once you rinse the filter, dry it. So, replace the controller to erase the code e060. CODE:E441PROBLEM:Thermistor open or short circuited (hot water inlet 2). According to the manual, the fault code e030 is the result of an overheated exhaust. Turn off the device and find out the flow sensor, remove it, and blow on it. The burner may get overheated if it gets filthy with fuel residue. Check direction of the internal 2-way valve. Just turn the unit off and remove the front panel. Or, you can call a certified plumber to deal with this issue. Navien error code E002 can be caused by low water pressure, so you have to ensure that the unit receives enough water. If needed, replace the controller or the sensor. Thirdly, you must replace the fan motor if you dont get sufficient voltage at the fan motor. A flow sensor is a vital component of the tankless appliance. I highly suggest you check the thermistor wiring on both cold water inlet1 and 2. If not, repair the electric outlet. This code informs you about ignition failure. Hope New Member Messages 11 Reaction score 0 Points 1 To fix and troubleshoot Navien error code E016, switch the unit off for 30 seconds and then back on. Turn off the device for half an hour and confirm everything is working properly. 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. Navien error code E439 is indicative of a problem with the flow sensor. Navien error code 003 how to fix indicates that there is an ignition failure in your unit. The original one was replaced about two years ago. Cuts installation time, no need to install new gas lines for retrofit applications. To learn how to clean the air intake filter, you can read this guide: Navien Tankless Water Heater Maintenance. Probably not. They incorporate innovative technology and are highly energy-efficient.But, they are not perfect, and problems do occur sometimes. The flashing code e003 on Navien Tankless Water Heater indicates there is a problem with the ignition system. 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. But, Read More How Much Propane Does A Tankless Water Heater Use? In this case, you can hire a certified plumber to do this task for you. Space-saving high-efficiency condensing boilers provide the ultimate home heating and comfort experience. 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. You can easily detect this problem. Also, check the intake air filter, the ground wire, power supply, and the wiring at the heat exchanger. CODE:E517PROBLEM:Abnormality in DIP switch setting. 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]. Our complete guide to pressure issues in boilers is a great place to start. 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. Non-condensing. FIX:Confirm all water supply and return lines are open. To fix this issue, just replace the limit control switch. Navien error code E421 means there is a problem with the cold water inlet 1 thermistor. Manage Settings Even with the best equipment, sometimes things may not go as planned. This can be a nice and easy one to sort out! Examine the wiring and thermistors condition. If necessary, call for a service. This number indicates that the water pressure is high. Do you want to know how to reset Navien tankless water heater? CODE: E434. Was it enjoyable? The bypass mixing valve has failed, as shown by the diagnostic code E445 on the computer. from the Austin, TX Better Business Bureau. The brand has fixed this problem by changing the flow sensor materials. The error code E445 tells about the defect of the bypass mixing valve. So, it will be worth reading the article. Then, turn it on again. It looks like you're using an ad blocker. Navien is renowned for producing high-quality water heaters worldwide. An open or short thermistor can be the root cause of this problem. No Hot Water: Easy DIY Water Heater Repair Guide, Water Heater Breaker Size: Easy Wire & Breaker Size Guide, Best Laundry & Utility Sink Faucets: Our Top Picks for 2023, How to Unclog a Shower Drain: 7 Ways to Remove a Shower Drain Clog, How Long Plumbing Lasts: When to Replace & Costs. Check the wiring and cold water inlet 2 thermistor and make sure both are in good condition. Check and remove the intake filter from the heater.