Replace the inlet thermistor. 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 - … If the error code persists after a reset, you may need to replace the APS. It has 4500 watt elements. 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. 10. Bosch Tankless Water Heater Error Codes. The same holds true for Navien tankless water heaters. 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. Navien error code E047 is an indication of a problem in the operation of the exhaust thermistor. See how a diagnostic system helps you find the cause of the problem. Navien error code E004 is an indication that the unit is detecting a false flame. Navien error code E046 means that there is a short at the heat exchanger thermistor. Error Code E002: Low Pressure on the Heating Side. Navien error code E783 means there is a problem with the operation of the OT-remote controller. Error codes are the indicators of the problems inside the water heater. 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. Navien error code E003 indicates a failure in the ignition of the unit. If necessary, replace the cold water inlet thermistor. 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. Replace the outlet thermistor. Error Code 16. When there is a malfunction, an error code will appear on the LCD display. Is there a reset but … read more 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. In addition to that, check whether the igniter is producing a spark. Navien error code E615 can indicate an input data error or a memory error. Subcode 1 Exhaust sensor: Check sensor wiring connection and the … So you can follow this guide to know more. 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. To troubleshoot Navien error code E109, check and clean, if necessary, the air intake filter and the fan motor. To fix the Navien error code, E110 ensures nothing obstructs or blocks the exhaust pipe and that the exhaust pipe is clear. Also, check the intake air filter, the ground wire, power supply, and the wiring at the heat exchanger. If your Navien tankless water heater displays an error E760, this means that you need to flush the heat exchanger. To fix the Navien error code E593, you need to inspect if the panel keys operate as they should. If you are damaging phone cords, radios, or other devices... My name is Hubert Miles. Switch the tankless water heater off and inspect the condition and wiring of the valve. 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 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. If necessary, replace the thermistor. As with other brands, Rheem tankless water heaters display error codes to indicate specific malfunctions. Replace any parts if needed. Navien error code E012 means there is a flame loss. Check the strainer and the heat exchanger. When buying a tankless water heater, we hope you find this guide helpful and will bookmark it for further reference. If necessary, replace the sensor. Following Hurricane Laura I had to change the circuit board and fuses. Damaged dip tube. Navien error code E016 means the heat exchanger is overheating. Bosch is a well-known brand of tankless water heaters that are commonly used by many homeowners. Get tips for resolving issues on your own. If there is a fault with your Bosch tankless… Call … Check the unit’s PCB for any damage or wiring issues. EcoSmart Troubleshoot & Resolve can assist you with 24-hour support. An open or short thermistor can cause the Navien error code E218. Reset the unit and check the PCB and the condition and the wiring of the exhaust sensor, flame rod, and pressure sensor. I've been conducting home inspections for 17 years. In the case of an error code E438, you may need to replace the pump, flow sensor, or PCB. An open or shorted sensor can cause Navien error code E740. Noritz Error Code F76. An open or shorted sensor causes the Navien error code E432. 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 … A GFCI outlet can be used to protect a non-grounded outlet New Installations: Ensure hot and cold water lines are not crossed 3. Navien error code E060 means a problem with the dual venturi limit switch. It can occur when more than one remote is hooked up to handle two Quick-Connected units. 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. 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. If Your Rinnai is acting up and needs help, we have fully qualified specialist available. 7. To troubleshoot and fix Navien error code E012, confirm that the main gas valve is open and the gas pressure is within spec. Before calling a licensed plumber, check to make sure your gas valve is open and supplying gas to the unit. Check dip tube, replace as needed. If needed, replace the sensor. Gas. In Easy Maintenance Tips for Tankless Water Heaters w/Photos will outline how to perform tankless water heater flushing and other maintenance. Turn the power to the tankless off. Make sure that you order the correct heater for the type of gas you will be using, Natural Gas or Liquid Propane. Navien error code E593 is caused by a problem with the operation of the front panel keys. If required, replace the tank thermistor. Navien error code E439 is indicative of a problem with the flow sensor. If there is water flow, clean and inspect the condition of the flow sensor connector. 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. Repeated LC codes will eventually lockout the water heater. If your home has a tankless water heater, you probably don’t think too much about it unless there’s a problem. Receptacle with reverse polarity Temper water to heater. Using Takagi error codes for troubleshooting Assumption: Takagi water heater was properly installed, per codes and manufacturer's recommendations. This error means the water is boiling in heat exchanger. 51: Noritz Code 51: Gas Manifold Solenoid Failure 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. 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. If the error code persists, measure the PCB’s voltage and replace the fan if the voltage is within spec. Please switch off the unit for at least 30 seconds and ensure that everything works correctly, then power it back on. Water Flow/Temperature Fluctuation Problems: If there is a low flow from the heater, the first thing to check would be the input filter. 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. See Noritz Tankless Water Heater Seven Common Error Codes & Repairs [PDF] 31: Inlet thermistor failure. 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 ) … … I'm a licensed Home Inspector, Certified Master Inspector (CMI), and FHA 203k Consultant. There’s nothing worse than a new phone, computer, or household appliance failing and not knowing why. Bosch Error Code 11. Often, you can quickly determine the cause of a malfunction by being able to identify the code. The Navien error code E434 can be caused by an open or shorter water adjustment valve. Tankless water heaters cost a bit more, however continuous flow heaters can last as much as twice as long as conventional water heaters. Abnormal input data. Navien error code E011 means there is high pressure on the heating side. These tanks are built to last with warranties that exceed many from other manufacturers. EcoSmart® Troubleshooting. I have considered replac … read more However, after the change the unit still did not work. We have a how to guide for tankless water heater maintenance. To fix Navien error code E001, you may need to clean the strainer and flush the heat exchanger. Navien error code E110 means there is an exhaust blockage. ... Tankless. To troubleshoot this error code, check the water supply and circulators, the flow sensor, and the pump. This error code can be caused by condensate blockage as well. Error code 031 (green LED flashes only once) The Navien error code E445 is typically caused by a faulty feedback sensor, damaged, opened, shorted, or blocked mixing valve, or a defective PCB. We have a how-to guide for tankless water heater maintenance. I unplugged it and now it is giving a 2, 13, 76, 1 codes. I started HomeInspectionInsider.com to help people better understand the home inspection process and answer questions about homeownership and home maintenance. This guide will discuss and go over the Navien tankless water heater error codes, their meaning, troubleshooting, and more. by Troy Koopman | Appliances, Plumbing Advice | 0 comments. The following codes for three of the leading manufacturers’ tankless water heaters is a quick guide to help you diagnose a potential malfunction. Rheem tankless water heaters use a condensing technology to offer continuous hot water without the use of a large water tank. This includes electric, water and gas connections and vent flue installation. Navien error code E002 means there is low pressure on the heating side. Sediment or lime build up on element(s). 33: Heat exchanger thermistor failure. In most cases it is either installation or environmentally related. To troubleshoot and fix Navien error code E517, you need to check the dip switches on the unit’s front panel and the PCB. Navien error code E127 is indicative of a problem with the air pressure sensor (APS). We can help!Get a free estimate from top-rated, screened, and licensed plumbers in your area! 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. Navien error code E421 means there is a problem with the cold water inlet 1 thermistor. I have a Rheem tankless water heater model RTG-95DVN. Here is navien tankless water heater error code will help you much when you meet with the errors. Residential. Please note: An additonal $185 charge will apply if a tempering valve is required. Navien error code E002 can be caused by low water pressure, so you have to ensure that the unit receives enough water. According to my observation, it not only operates in a quiet way but also provides a stable hot water flow. Subcode 0 From heat exchanger high limit switch: Check the PCB. An open or shorted sensor causes the Navien error code E421. Navien error code E046 can also indicate a limit control, in which case it is advisable to contact a licensed contractor for further help. If the error persists, check the condition of the sensor. My Rheem tankless water heater will run a minute and kick off putting out the 13 code. 2. To fix this error code, check if there is water flow while the cascade system is switched off. Navien NPE Error Code E594. An open or shorted sensor can cause Navien error code E353. Unfortunately, it’s always at an inopportune time. Reverse Polarity Dangers: How to Test & Repair. The Girard tankless water heater is very preferred today. In Easy Maintenance Tips for Tankless Water Heaters w/Photos will outline how to perform tankless water heater flushing and other maintenance. Inspect the condition of the controller and, if necessary, replace it. Error code E127 can be caused by an open or shorted APS. 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. Check the sensor’s connectors to ensure they are installed correctly and are not wet. Navien error code E205 indicates a problem with the operation of the heating supply thermistor. To fix and troubleshoot Navien error code E016, switch the unit off for 30 seconds and then back on. Check and ensure the water pressure sensor and wiring are in good working condition, and there are no loose connections. Have questions, or need some help with a Ruud tankless product? Bosh fault code 11 – Indicates a problem with the tankless water heater’s ignition. 32: Outlet thermistor failure. What it Means: Water temperature is too high. Navien error code E432 is a sign of a problem with the cold water inlet 2 thermistor. Ensure the flow rate and the PCB voltage at the pump are within spec and that the water circulates properly. 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