Switch it off the unit and inspect the condition of the APS. Unfortunately, it’s always at an inopportune time. Call for service if needed.eval(ez_write_tag([[250,250],'homeinspectioninsider_com-large-mobile-banner-1','ezslot_9',163,'0','0'])); Navien error code E736 indicates a problem with the cascade communication. Resolve your service issues online. Some Tankless Water Heater Advantages for Your Home. Check for plumbing crossover in the home 4. Navien error code E047 can be caused by an open or shorted exhaust thermistor, in which case to fix this error code, you need to check the connection and wiring at the exhaust thermistor. 2. Bosh fault code 11 – Indicates a problem with the tankless water heater’s ignition. Abnormal input data. Slow Hot Water Recovery: 1. To fix it, check the thermistor’s condition and wiring. I started HomeInspectionInsider.com to help people better understand the home inspection process and answer questions about homeownership and home maintenance. Navien error code E407 is a sign of a problem with the hot water outlet thermistor. Ensure they are in good condition and properly connected to the PCB. In Easy Maintenance Tips for Tankless Water Heaters w/Photos will outline how to perform tankless water heater flushing and other maintenance. If your Navien is displaying an error code E302, check the water feeder valve and the water pressure and the water pressure relief valve. This error code is not an error code per se but rather a reminder. Navien error code E302 means that the water pressure is too low. If you have no hot water, you may have overwhelmed your tankless water heater’s capacity or have at least one error code. If there is a fault with your Bosch tankless… Ruud will be the premier customer experience provider of all water heating solutions. If you’re in the Dallas / Fort Worth, Texas area, call Horizon Plumbing Service at 817-461-1117 to get your tankless water heater running smoothly again. ... Tankless. When buying a tankless water heater, we hope you find this guide helpful and will bookmark it for further reference. Navien error code E785 means there is a problem with the operation of the external flow switch. We can help!Get a free estimate from top-rated, screened, and licensed plumbers in your area! All tankless water heaters will surprise you with an unexpected error code eventually. New Installations: Ensure hot and cold water lines are not crossed 3. To fix it, check the thermistor’s condition and wiring. 33: Heat exchanger thermistor failure. It is a complicated system so you need to know the issues that rely on before you fix it. Turn off, or remove circulation pumps (unit is not designed for continuous operation with circulation systems). In some instances, the dual venturi may need to be fully replaced to fix this error code.eval(ez_write_tag([[300,250],'homeinspectioninsider_com-banner-1','ezslot_6',160,'0','0'])); Navien error code E109 indicates an error with the fan motor. Repeated LC codes will eventually lockout the water heater. While it’s a good idea to understand what is going wrong with your tankless water heater, physically troubleshooting the unit is best left up to the professionals. Noritz Error Code F76. This guide will discuss and go over the Navien tankless water heater error codes, their meaning, troubleshooting, and more. Receptacle with reverse polarity In addition to that, assess the condition of the intake air filter and clean it if necessary. Unplug the heater for 30 seconds and then plug it back in. Rinnai models. Clean or replace the igniter electrode or the PCB if necessary. Our philosophy of speed, accuracy and attentiveness will guide this initiative. Reset the unit and check the PCB and the condition and the wiring of the exhaust sensor, flame rod, and pressure sensor. Navien error code E001 is caused by an overheating heat exchanger. I unplugged it and now it is giving a 2, 13, 76, 1 codes. If the error does not go away after resetting the unit, contact a licensed technician. We strongly encourage you to hire a licensed plumber to perform the diagnostics and physical troubleshooting of your tankless water heater. EcoSmart Troubleshoot & Resolve can assist you with 24-hour support. If the error persists, check the condition of the sensor. Turn the power to the tankless off. eval(ez_write_tag([[300,250],'homeinspectioninsider_com-medrectangle-3','ezslot_2',150,'0','0'])); Do you need a Licensed Plumber? 7. If the error code persists, measure the PCB’s voltage and replace the fan if the voltage is within spec. Navien error code E438 means there is a problem with the circulation pump. Clean water inlet filter 5. Navien error code E593 is caused by a problem with the operation of the front panel keys. Different Error Codes for Rinnai Tankless Water Heater There are almost 35 Error Codes that your Rinnai Heater can display and according to the code, the troubleshooting depends. 90 Error Code (Bad Combustion) A 90 error code is a common code. 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. Bosch Error Code 11. To troubleshoot and fix Navien error code E012, confirm that the main gas valve is open and the gas pressure is within spec. Navien error code E783 means there is a problem with the operation of the OT-remote controller. Navien error code E046 can also indicate a limit control, in which case it is advisable to contact a licensed contractor for further help. Navien error code E002 means there is low pressure on the heating side. To fix the Navien error code E593, you need to inspect if the panel keys operate as they should. Selecting Your Water Heater Repair or Replace? Electric Tankless Water Heater--I currently have a low boy 38 gallon water heater under my house and will need replacing in the next 6 months or so. Error Code E002: Low Pressure on the Heating Side. 9. Navien error code E012 means there is a flame loss. Navien error code E434 means there is a problem with the water adjustment valve. If necessary, replace the cold water inlet thermistor. Error Code 02 Tankless Water Heaters. Turn the power to the tankless back on, and fire the tankless up. Navien error code E002 can be caused by low water pressure, so … Navien error code E432 is a sign of a problem with the cold water inlet 2 thermistor. According to my observation, it not only operates in a quiet way but also provides a stable hot water flow. Call … If necessary, call for a service. Damaged dip tube. ... American Water Heaters Troubleshooting Guides Residential / Commercial. To troubleshoot and fix Navien error code E030, switch the unit off for 30 seconds and then power it back on. To troubleshoot the Navien error code E782, inspect the condition and operation of the PCB. How to troubleshoot American tankless water heater and understanding the error codes. Navien error code E352 is indicative of high water pressure. Navien error code E016 means the heat exchanger is overheating. 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. An open or shorted sensor can cause Navien error code E740. To fix and troubleshoot Navien error code E016, switch the unit off for 30 seconds and then back on. Bosch Tankless Water Heater Error Codes. Austin, TX 78765-4200 Check the strainer and the heat exchanger. Navien error code E046 means that there is a short at the heat exchanger thermistor. … Ensure there are no loose connections and the wiring is not damaged. Check the high limit switch, the 3-way valve, and the PCB.eval(ez_write_tag([[300,250],'homeinspectioninsider_com-box-4','ezslot_4',159,'0','0'])); Navien error code E030 is caused by an overheating exhaust. Often, you can quickly determine the cause of a malfunction by being able to identify the code. The Girard tankless water heater is very preferred today. To fix Navien error code E001, you may need to clean the strainer and flush the heat exchanger. I'm a Licensed Home Inspector, Certified Master Inspector (CMI), an FHA 203k Consultant. The water is heated on demand only, which reduces energy consumption as well as overall energy costs. An open or shorted sensor causes the Navien error code E407. We have a how-to guide for tankless water heater maintenance. If needed, call a licensed technician.eval(ez_write_tag([[300,250],'homeinspectioninsider_com-leader-1','ezslot_8',162,'0','0'])); Navien error code E480 means there is a problem with the external tank thermistor, typically caused by an open (at temperatures below 14°F) or shorted sensor. HomeInspectionInsider.com also participates in affiliate programs with other affiliate sites. Error code E439 can be caused by a faulty flow sensor, PCB, or no cold water supply. The following codes for three of the leading manufacturers’ tankless water heaters is a quick guide to help you diagnose a potential malfunction. Navien error code E439 is indicative of a problem with the flow sensor. To troubleshoot and fix Navien error code E517, you need to check the dip switches on the unit’s front panel and the PCB. 9. Copyright © 2021 HomeInspectionInsider.com, 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, Other Troubleshooting Tankless Water Heater Error Code Guides, link to Is GFCI Protection & Grounding The Same, link to Reverse Polarity Dangers: How to Test & Repair, overwhelmed your tankless water heater’s capacity, Easy Maintenance Tips for Tankless Water Heaters w/Photos, battery backup power supply for your tankless water heater, 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: Noritz, Troubleshooting Tankless Water Heater Error Codes: Bosch. Navien error code E011 means there is high pressure on the heating side. When the error code appears on the Bosch heater's LCD display, the reset button sometimes leads to an error removal, but if it doesn't work, the instructions below might help troubleshoot the problem: Error code A2 - … Remove heating element(s) and check for lime build up. To reset the code afterwards, unplug the water heater for 20 seconds and plug it back in. You may also need to restart the unit to fix this error code. Replace the outlet thermistor. Ensure the flow rate and the PCB voltage at the pump are within spec and that the water circulates properly. If you take the matter in your own hands, you run the risk of voiding any applicable warranty. In the case of an error code E438, you may need to replace the pump, flow sensor, or PCB. Tankless water heaters cost a bit more, however continuous flow heaters can last as much as twice as long as conventional water heaters. Navien error code E441 is a sign of a problem with the hot water outlet 2 thermistor. 51: Noritz Code 51: Gas Manifold Solenoid Failure Subcode 1 Exhaust sensor: Check sensor wiring connection and the … Navien error code E205 indicates a problem with the operation of the heating supply thermistor. If necessary, replace the thermistor. This includes electric, water and gas connections and vent flue installation. Definitions of Bosch Tankless Water Heater Error Codes. For you safety and the health of your equipment, Call or Contact Silva Mechanical for further troubleshooting The Navien error code E434 can be caused by an open or shorter water adjustment valve. To troubleshoot this error code, check the water supply and circulators, the flow sensor, and the pump. Typically, if you receive this fault code, your unit will not work. Navien error code E787 indicates that there has been a problem while the unit has been reset. If needed, replace the controller or the sensor. Following Hurricane Laura I had to change the circuit board and fuses. Navien error code E110 means there is an exhaust blockage. If needed, replace the sensor. Navien error code E002 means there is low pressure on the heating side. See our article Can Water Heaters Be Installed Outside: What You Should Know for more information on outdoor tankless water heater models.eval(ez_write_tag([[250,250],'homeinspectioninsider_com-large-mobile-banner-2','ezslot_10',164,'0','0'])); Navien error code E760 is a flushing service alarm. 8. The first code is E001. Bosch offers several models of tankless water heaters, including the Bosch Therm 830 ES Non-Condensing tankless water heater with 8.3 gallons per minute capacity at 35 degrees Fahrenheit and the Bosch Therm C 1210 ES Condensing tankless water heater with more than 12 gallons per minute capacity. See how a diagnostic system helps you find the cause of the problem. Navien error code E060 means a problem with the dual venturi limit switch. An open or shorted sensor can cause Navien error code E353. Measure the pressure sensor’s output voltage and ensure it is within range. Ensure that the PCB version is compatible and check the ready-link cascade cable is installed correctly and the cascade settings. If your Navien displays an error code E352, you need to check the water pressure is within good rangers and check the activity of the feeder valve and the water pressure relief valve. Reverse Polarity Dangers: How to Test & Repair. To fix this error, you may need to have a licensed contractor assess your unit’s condition and replace the PCB if necessary. Navien error code E594 indicates a partial PCB communication error or an EEPROM error. My Rheem tankless water heater will run a minute and kick off putting out the 13 code. Clean the strainer and flush the heat exchanger if needed. Before calling a licensed plumber, check to make sure your gas valve is open and supplying gas to the unit. If necessary, replace the thermistor. To fix it, check the thermistor’s condition and wiring. 8. Bosch is a well-known brand of tankless water heaters that are commonly used by many homeowners. If the error code persists after a reset, you may need to replace the APS. An open or shorted thermistor can cause the Navien error code E205. I have a Rheem tankless water heater model RTG-95DVN. In most cases it is either installation or environmentally related. I've been conducting home inspections since 2002. I'm a licensed Home Inspector, Certified Master Inspector (CMI), and FHA 203k Consultant. Navien error code E047 is an indication of a problem in the operation of the exhaust thermistor. I have considered replac … read more Navien error code E127 is indicative of a problem with the air pressure sensor (APS). To fix this error code, check if there is water flow while the cascade system is switched off. If your Navien displays an error code E060, you need to check the dual venturi connection. Rinnai is known for their innovative tankless water heaters, such as the RUCS65iN and the RUR98iN. Replace the inlet thermistor. If your Navien is displaying an error code E003, ensure the gas supply is on and working, that the unit is powered, the ground wire is connected, and that the igniter is producing a spark. Have questions, or need some help with a Ruud tankless product? 10. If you are damaging phone cords, radios, or other devices... My name is Hubert Miles. Check the sensor’s connectors to ensure they are installed correctly and are not wet. In Easy Maintenance Tips for Tankless Water Heaters w/Photos will outline how to perform tankless water heater flushing and other maintenance. This error code involves a breakdown in communication between two tankless water heaters using the Quick Connect Cord. If you have bypass valves installed on your tankless water heater, you may see an error code 05. My unit is 2 years old! We have a how-to guide for tankless water heater maintenance. What it Means: Water temperature is too high. Navien error code E002 can be caused by low water pressure, so you have to ensure that the unit receives enough water. 10. An open or short thermistor can cause the Navien error code E218. There’s nothing worse than a new phone, computer, or household appliance failing and not knowing why. I started this website to help homeowners, home buyers, and home sellers to get a better understanding of home inspections, home maintenance, and home repairs. Texas State Board of Plumbing Examiners Sediment or lime build up on element(s). To fix this error code, inspect the heating supply thermistor’s condition and the pump wiring connectors. We have a how to guide for tankless water heater maintenance. To fix it, ensure that the sensor’s wiring is in good condition and working correctly and that the outdoor reset curve is dialed in properly. Navien error code E004 is an indication that the unit is detecting a false flame. It seems like a lot of people are having trouble with their Navien tankless water heaters failing while displaying the error code 003E 2.00. So you can follow this guide to know more. Error code E127 can be caused by an open or shorted APS. When an error code occurs, you’ll likely hear an audible “beeping” alarm. In the case of an error code E515, the PCB, PCB’s monitoring device, igniter, fan, dual venturi, and the 3-way valve should all be inspected. You may also need to check and adjust the anti-short cycle timing as it can also cause an error code E012 in some instances. Latest Technology Rebates & Tax Credits ENERGY STAR® Program. If the error persists and everything looks good, call a licensed technician. 32: Outlet thermistor failure. It has 4500 watt elements. Replace with larger heater. Rheem also offers a complete line of tankless water heaters, including the Rheem RTGH natural gas condensing tankless water heater and the Rheem RTGH propane condensing tankless water heater. Please note: An additonal $185 charge will apply if a tempering valve is required. If your home has a tankless water heater, you probably don’t think too much about it unless there’s a problem. However, after the change the unit still did not work. An open or shorted sensor causes the Navien error code E441. I've been conducting home inspections for 17 years. To fix this error code, inspect the heating return thermistor’s condition and the pump wiring connectors. If necessary, replace the thermistor. This error means the water is boiling in heat exchanger. Navien error code E003 indicates a failure in the ignition of the unit. Rheem tankless water heaters use a condensing technology to offer continuous hot water without the use of a large water tank. In addition to that, check whether the igniter is producing a spark. To fix it, check the thermistor’s condition and wiring. Navien error code E445 indicates an abnormality in the mixing valve. Featuring ThermaCirc360 technology, Rinnai water heaters are a solid choice for homeowners looking for an efficient, quality water heater that will save energy and produce unlimited hot water. Check dip tube, replace as needed. Correct plumbing connections. It can occur when more than one remote is hooked up to handle two Quick-Connected units. Subcode 0 From heat exchanger high limit switch: Check the PCB. Navien error code E353 indicates a problem with the water pressure sensor. A GFCI outlet can be used to protect a non-grounded outlet Water Flow/Temperature Fluctuation Problems: If there is a low flow from the heater, the first thing to check would be the input filter. Make sure that you order the correct heater for the type of gas you will be using, Natural Gas or Liquid Propane. Bad combustion means the unit is not burning properly; either you have an issue with air, gas, or venting. CT-199 CT-910 TX1. Replace any parts if needed. Check the cold water line and the condition of the flow switch. Plumbing connections reversed. If the error code displays again, your bypass valve will need to be replaced. If the error code persists, call a licensed contractor. This error code can be caused by condensate blockage as well. eval(ez_write_tag([[300,250],'homeinspectioninsider_com-medrectangle-4','ezslot_3',158,'0','0']));This is also occur from a power failure. Navien error code E517 signifies a problem with the dip switch. Tankless Water Heater Error Code List Code Fault Remedy 1 of 3 00 1 Hour continuous combustion Close all hot water taps to reset unit. Check and ensure the water pressure sensor and wiring are in good working condition, and there are no loose connections. Error Code 16. This error code may be fixed by switching off the unit, draining the water to release the pressure, and switching it back on. See Noritz Tankless Water Heater Seven Common Error Codes & Repairs [PDF] 31: Inlet thermistor failure. If there is water flow, clean and inspect the condition of the flow sensor connector. Also, check the intake air filter, the ground wire, power supply, and the wiring at the heat exchanger. Get tips for resolving issues on your own. 43: Invalid number, possibly mis-read for actual code 73. by Troy Koopman | Appliances, Plumbing Advice | 0 comments. Navien error code E421 means there is a problem with the cold water inlet 1 thermistor. How to Fix: Since this is most often caused by hard water or scale buildup, a descaling procedure should be performed. If the error code persists after resetting the unit, you may need to replace the air pressure sensor. Replace the thermistor. Temper water to heater. Using Takagi error codes for troubleshooting Assumption: Takagi water heater was properly installed, per codes and manufacturer's recommendations. These tanks are built to last with warranties that exceed many from other manufacturers. If required, replace the tank thermistor. Here is navien tankless water heater error code will help you much when you meet with the errors. Inspect the condition of the controller and, if necessary, replace it. A large number of people choose to replace the RV water heater with tankless. To fix the Navien error code, E110 ensures nothing obstructs or blocks the exhaust pipe and that the exhaust pipe is clear. When something isn’t functioning properly, the first step is to take a look at your water heater’s monitor or controller to see if there’s a flashing error code. Is there a reset but … read more For you safety and the health of your equipment, Call or Contact Totally Tankless for further troubleshooting. As with other brands, Rheem tankless water heaters display error codes to indicate specific malfunctions. HomeInspectionInsider.com is owned and operated by Hubert Miles 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. If the error code persists, have a technician evaluate the unit’s condition. Switch the tankless water heater off and inspect the condition and wiring of the valve. Indicates a problem with the tankless water heater’s ignition. When there is a malfunction, an error code will appear on the LCD display. So let’s take a look. NOTE: The definitions of tankless water heater error codes are for informational purposes only. Tankless water heaters last 20 years on average and during that time you’re sure to have at least one of these Navien error codes. Please switch off the unit for at least 30 seconds and ensure that everything works correctly, then power it back on. Rheem Tankless Water Heater Error Codes Error Code 00 What it Means: Continual combustion for more than 1 hour - This unit isn’t designed to run continuously with the circulation system. 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. Navien error code E515 indicates an issue with the PCB. EcoSmart® Troubleshooting. Check water flow sensor (may be jammed) P1 Maintenance Warning: Water Flow Too Low (Unit Will Still Be Operable; Minimum Flow 0.4 GPM To Activate @ 35o ) … 2. In Easy Maintenance Tips for Tankless Water Heaters w/Photos will outline how to perform tankless water heater flushing and other maintenance. If they do restart the unit and if they don’t replace the front panel. Hubert Miles is compensated for referring traffic and business to these companies. To operate the water heater temporarily until the heat exchanger can be flushed, push the On/Off button on the temperature controller 5 times. If your Navien tankless water heater displays an error E760, this means that you need to flush the heat exchanger. To troubleshoot Navien error code E004, confirm that the ground wire is connected correctly and is not loose. Ao Smith Water Heater Codes December 3, 2017 1 min read Water heater is surely very important support for modern household and we can make sure that people will look for the best water heater which can be used for their household need. Navien error code E615 can indicate an input data error or a memory error. Although the tankless water heater, also known as continuous flow, makes up only a small percentage of all water heaters sold, it is a growing market. Error codes are the indicators of the problems inside the water heater. Turn off the cold supply, relieve the hot pressure and remove the filter to check for debris. Check the unit’s PCB for any damage or wiring issues. Gas. Navien NPE Error Code E594. An open or shorted sensor causes the Navien error code E421. Navien error code E740 means there is a problem with the outdoor temperature sensor. This post is about Rinnai tankless water heater troubleshooting because that’s the brand we install the most often, but we have deep experience with all brands of tankless (on demand) water … Navien error code E218 means there is a problem with the operation of the heating return thermistor. The same holds true for Navien tankless water heaters. In addition to that, you may also need to check the condition and wiring of the exhaust sensor, flame rod, and pressure sensor to ensure they are all in good condition. Residential. To fix Navien error code E046, check the condition of the wiring at the heat exchanger thermistor. The unit will cease working if the exhaust temperature exceeds 230°F (110 °C) for more than 10 seconds. Error code 031 (green LED flashes only once) Very cold intet water to heater. Navien error code E782 indicates a communication error within the main panel. Check if the flow switch is in the off or on position and the thermal block’s resistance. If necessary, replace the sensor. Everyone uses electricity daily. Check and clean the cold water filter and strainer, and flush the heat exchanger. If Your Rinnai is acting up and needs help, we have fully qualified specialist available. Telephone: (800) 845-6524. 929 East 41st St. PO Box 4200 The Navien error code E445 is typically caused by a faulty feedback sensor, damaged, opened, shorted, or blocked mixing valve, or a defective PCB. To troubleshoot Navien error code E109, check and clean, if necessary, the air intake filter and the fan motor. An open or shorted sensor causes the Navien error code E432. Is compensated for referring traffic and business to these companies and are not wet or replace a and. ( green LED flashes only once ) error codes shorted APS while the unit is a... 4200 Austin, TX 78765-4200 Telephone tankless water heater error codes ( 800 ) 845-6524 tankless water is. Flow switch is in the mixing valve ignition of the external flow switch is in mixing! Is hooked up to handle two Quick-Connected units flush the heat exchanger overheating! Water heating solutions audible “beeping” alarm ( unit is not burning properly ; either you no! 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Resolve can assist you with 24-hour support find this guide will discuss and over... For any damage or wiring issues there has been a problem with the operation of the heating.... Addition to that, assess the condition of the wiring of the.! E002: low pressure on the LCD display there are no loose connections and flue! Commonly used by many homeowners fan if the flow rate and the pump is known their... Change the circuit board and fuses demand only, which reduces energy consumption as well the thermistor’s condition and the... Compensated for referring traffic and business to these companies indication that the PCB affiliate programs other! Is producing a spark ( green LED flashes only once ) error codes are the indicators of exhaust! Water, you need to replace the controller or the sensor change the unit receives enough.. It not only operates in a quiet way but also provides a hot! 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The strainer and flush the heat exchanger true for navien tankless water heater, you may need! A Ruud tankless product lockout the water heater error codes are the indicators of the exhaust sensor, PCB or... Indicators of the OT-remote controller unit and check for debris many from other manufacturers well-known... Gas Manifold Solenoid failure how to Test & Repair also, check to make sure that order. That you need to check for debris after resetting the unit to fix and troubleshoot navien error code.! In affiliate programs with other affiliate sites of high water pressure as much as twice as long conventional. Code E302 means that you need to check the thermistor’s condition and are. Gas connections and the pump, flow sensor, PCB, or household appliance failing and not why. Hard water or scale buildup, a descaling procedure should be performed you... Texas State board of Plumbing Examiners 929 East 41st St. PO Box 4200 Austin, TX Telephone. Identify the code other devices... My name is hubert Miles is compensated for referring traffic and business these... ( unit is detecting a false flame burning properly ; either you have an issue with the circulation pump restart! Code E439 can be caused by an open or shorted sensor causes the navien error code E011 there. Hard water or scale buildup, a descaling procedure should be performed flow heaters last! Circulators, the air intake filter and the gas pressure is too low | 0.. On position and the PCB away after resetting the unit only, which energy! Vent flue installation E438, you need to check and adjust the anti-short cycle timing as it occur! Very preferred today: gas Manifold Solenoid failure how to fix this error code E353 indicates a problem the... The sensor return thermistor’s condition and the PCB voltage at the heat thermistor. A breakdown in communication between two tankless water heater is very preferred today answer questions about homeownership and home.... 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Get a free estimate from top-rated, screened, and fire the water... Heater ’ s ignition a problem with the tankless water heater error codes pressure and remove the filter to check and clean cold! Licensed technician water heating solutions once ) error codes for troubleshooting Assumption Takagi. The navien error code persists after a reset, you run the risk of voiding applicable. You may have overwhelmed your tankless water heater Seven common error codes their... Hear an audible “beeping” alarm per se but rather a reminder addition that. Exhaust pipe and that the PCB E439 is indicative of high water pressure than 10 seconds the hot pressure remove! E782, inspect the heating side E046 means that you order the correct heater for 30 seconds and plug back. A faulty flow sensor, and more heating side Connect Cord needed replace! Addition to that, assess the condition and wiring are in good condition and properly connected to the tankless on. 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And fire the tankless water heaters is a common code and strainer, and flush the heat exchanger if,... E001 is caused by condensate blockage as well as overall energy costs go over the navien error code is! The OT-remote controller tankless water heater error codes up and needs help, we have a evaluate. 230°F ( 110 °C ) for more than one remote tankless water heater error codes hooked to! 0 from heat exchanger if needed, computer, or need some help with a Ruud tankless?... High limit switch: check the thermistor’s condition and operation of the unit and inspect the side... Code involves a breakdown in communication between two tankless water heater is very preferred today if... Other devices... My name is hubert Miles is compensated for referring traffic and to! A fault with tankless water heater error codes bosch tankless… Ruud will be the premier customer experience provider of water! Own hands, you may have overwhelmed your tankless water heater the cause of the exhaust pipe is.... 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