Check and ensure the flame rod is touching the flame when the heater fires. Contact a professional to clean or replace the heat exchanger effectively. There is an issue with the inlet thermistor. Then open a hot valve in the home, and purge out all air when you turn the water back on. Numerous reasons could cause this code to appear. How to Fix: Examine the modulating gas solenoid valve wiring harness for any loose or damaged terminals and Ohm out the valve. But if you have a gas water heater, you may be getting the E5 code because of this. And your hot water may turn into cold water after a few minutes because of a broken dip tube in your hot water heater that allows mixing cold water with hot water at the top of the tank. My 3 1/2 year old was playing with the water hose near the fresh air intake of the water heater and some water went in. You should expect dependable performance and unlimited hot water from the unit for more than 20 years. However, you will mostly end up frustrated with the units performance. Correct venting of a water heating system can guarantee efficient performance and increase the lifespan of your appliance. Your heater has a piece of equipment called a gas pressure regulator. First of all, flush the heat exchanger by consulting the users manual provided by the manufacturer. Open the faucet to drain the remaining water from the heater. If fault re-occurs book service call. It draws a massive amount of power and we even upgraded our drop from the street to 200 amps to support it, with a new panel and breakers inside. Clean it up with a thin wire brush. The EcoSmart tankless water heater needs 208 volts or higher to run correctly. Rheem water heaters may function if the E5 error code is not severe. Cold shower not my idea of fun. For instance, for you to reach a specific desired temperature, you will be required to mix the hot water with some cold water. And lets not forget the annoying beeping sounds from a faulty combustion alarm. The bathtub has a water volume of 3.5 gallons per minute to 8 gallons per minute. Was it enjoyable? Why does my tankless water heater go cold sometimes? Mainly E5 on a Rheem tankless water heater means a high water flow rate. To do so: Why is an Error E5 Showing on my Rheem Tankless Water Heater? window.mc4wp.listeners.push( Condensation. This chart below lists all the Rheem error codes you might come across along with the possible diagnostic problem and its solution. Re-install the air filter back into place. He has practical skills in fixing smoker & heating appliance issues. just had water installed reads E 5 code. All the dirt particles must be removed. David is a man who loves doing research and finding out the best solution to any type of heating appliance issues like heaters and fireplaces. Clean the ventilators if already in the room in case they are dirty. It specifies that a false flame has been sensed. Also, if you are at a high altitude, reduce the temperature below 180 and check the heat exchangers thermistor. Once the EcoSmart tankless water heater gets the correct amount of incoming power, your EcoSmart system LED will display the selected temperature. If the error code E5 is flashing in the display, it tells you that the water flow rate is too high in the system. Error code 13 is the diagnostic information from the control panel, telling you that the ODS gets activated. Blocked Air Intake 5. Why is Your Water Heater Leaking From Overflow Pipe? Running every faucet at once may overwhelm your heater and fail to heat. how to fix the RV Water heater igniter not clickingproblem, Radeon RX6900XT Cooled By Bykski Waterblock- Thermaltake Level 20 HT Build Part 4, Pilot Light Lit But Burners Wont Ignite [13 Easy Fixes], Sta Rite Pool Heater Turns On By Itself [5 Easy Fixes], State Select Water Heater Pilot Light Issues [7 Easy Fixes], Richmond Tankless Water Heater Code 29 [Reasons + Solutions], Richmond Tankless Water Heater Code 13 [Reasons + Solutions], Richmond Tankless Water Heater Code 11 [Why+ How To Fix], Richmond Tankless Water Heater Code 12 [Why+ How To Fix]. In the end, you have to Ohm out the heaters safety circuit. Tankless water heaters generally last considerably longer than tank-type heaters, as they dont hold corrosive water for prolonged periods. If you are looking for a warranty on your Rheem tankless water heater, please check out this link. Rheem generally offers 1-year limited warranty on its products. You can order the specific blown-out fuse from amazon. A blocked exhaust is often the reason behind faulty combustion alarms. Then, test the drain line to make sure it is not clogged, and you have removed the shipping cap as well. Yes, your water heater will occasionally produce cold water in addition to the hot water it normally produces. How to troubleshoot Rheem tankless electric hot water heater E5 code? You will find it at your gas supply line. For example, you must have the right-sized wrench, screwdrivers, and a user manual for the unit. You should always fix E5 errors, irrespective of the reasons behind the E5 error. What causes Rheem tankless electric hot water heater E5 code? In the worst situation, you may need to replace the fan motor or PCB. How to Fix: The cold water inlet pipe and inlet valve should be fully open. This is not ideal for a flame. First of all, check the air intake and exhaust venting to know if they meet the installation requirements and working correctly. Primarily, check the water pressure from the hot water fixture. I'm a licensed Home Inspector, Certified Professional Inspector (CPI), Certified Master Inspector (CMI), and FHA 203k Consultant. event : evt, There is an issue with the outlet thermistor. Any ideas on this? Still, if you are facing any trouble, then let us know in the comment box. new electric tankless Rheem 18kw giving E5 code with shower on. It will trip as soon as the water is heated to an extreme temperature. The consent submitted will only be used for data processing originating from this website. It will be better to contact a professional for tracking down the blower motor issue and fix the problem. That means a bad motor is interrupting the combustion system, leading to the error E5. Finally, test the blower motor to find out any obstructions or damaged parts. Once a year is good enough. Now if the burner assembly is blocked by dust and debris, it will fail to continue its operation, leading to interruption in the combustion system. Why do tankless water heaters burst? Besides, the temperature cant able to reach the set temperature. Slowing down the water flow rate will be enough to resolve the issue. A faulty flow meter sensor and poor or broken wiring connection to the sensor are responsible for triggering the error code E4. To fix the E5 issue, ensure the correct gas pressure, adequate water flows, blockage-free air intake & exhaust, and proper ventilation in the room where you place your water heater. Then close the hot water shut-off valve. Low Water Pressure From The Water Line 6. Perhaps, the pipes are not appropriately attached to the vent thermal. Clean all the neutralizer drainage ports on the interior side and neutralizer drainage lines on the units outer side. First of all, check the fan motor and ensure it is turning correctly and freely. Rheem is one of the dependable and trustworthy brands globally when it comes to delivering cost-effective and durable home care solutions to millions of domestic and commercial properties worldwide. Today, we will break down all Rheem tankless units error codes to help you diagnose the exact solution to the issue you are experiencing with the product. If you are confident that youre not overworking your unit, consult a professional. The water flow rate in tankless water heaters must not exceed 12.3 liters, or 3.25 gallons, per minute. These error codes correspond to a particular problem with your boiler, letting you discover what is wrong without the need for extensive troubleshooting. The E5 error code on a Rheem Tankless Water Heater signifies the excessive water flow rate. The Rheem tankless water heater is a piece of excellent equipment to have at home or in the workplace. They were up-front about not being familiar with this model but followed the manufacturers installation instructions. First of all, press the power button to clear the hard lockout. If it doesn't, you may need to press the button . Now have a fan running in there to help dry out. Standard EcoSmart tankless water heater error codes include: E1 error code - an error on the inlet thermistor. Even the largest tankless unit could struggle in a high-demand household (1). Also, make sure that there are no plumbing or technical problems such as crossovers. New tankless water heater heater. First of all, clean the air inlet screen and fins on the heat exchanger. First of all, clean the air inlet screen and fins on the heat exchanger. We receive monetary benefits in return for showing ADs on this website and by linking to Amazon and affiliate sites at no cost to you. Using this chart may help you diagnose and/or fix a problem you may be experiencing. Blockage in the air intake and exhaust vents. Clean the inlet water supply filter and look for pipe dope inside the water flow control turbine. Error E5 codes may be the result of a malfunctioning combustion alarm. They were up-front about not being familiar with this model but followed the manufacturers installation instructions. How to Fix: Check to ensure the air filter door is seated properly and the front panel has been installed correctly. it comes to homes, an issue that frequently arises is that the unit that is installed is not of the appropriate size for the households requirements. While supplies last, you can get an open box RTEX-18 at an incredible price. Full Guide 2022, How To Vent Tankless Water Heater? Before starting the cleaning, make sure you have disconnected the unit from the power connection and turned off the gas supply. As an Amazon Associate, I earn from qualifying purchases. Ensure the condensation collar and proper venting material was installed and that the gas line, meter, and regulator are all properly sized. When you see this error code, it becomes necessary to learn how to reset Rheem tankless water heater. When the unit was installed the water was luke warm at best. Close hot tap, cycle power on and off at GPO and open hot tap again. Their tankless appliances are packed with several groundbreaking traits that allow meeting an average familys hot water requirements. He loves to share his knowledge & helps others in fixing their units & saving their pockets. Rheem Tankless Electric Water Heaters - Performance Tankless Electric 18kw - RETEX-18 - Rheem Manufacturing Company 18kw Tankless Electric Water Heater with 5 Year Limited Warranty Model # RETEX-18 Home Products Residential Water Heating Tankless Tankless Electric Performance Tankless Electric 18kw Performance Tankless Electric 18kw Replace the non-operation fan motor. If you notice it is low, you may have to clean it. If necessary, turn in more. Relocate any hard objects that could be impeding the pipe and causing debris to build up inside. Wear protective gear if possible to cover your eyes, hands, and body. No spam, we promise. 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.. Examine the heat exchanger for obstacles or scale build-up. Then use a towel to dry off the filter. A Definitive Guide, How To Flush Rinnai Tankless Water Heater? Replace the gas control valve, if necessary. It will make your Rheem tankless error code troubleshooting far quicker. Besides, you can just close the outgoing and incoming water valves. Another potential cause happens mostly with freshly installed units. However, some models require that you install an app on your phone where you will receive these updates. After it is squeaky clean, let it dry. Here, Scalzo, containing Hydrochloric acid is the most effective product for descaling any condensation buildup from the heating element. If the LED control board of your EcoSmart tankless water heater is displaying an E5 error code, it means that the desired water volume is too high. E4 error code - an error due to high temperature. How to Fix: Locate and clean up any blockages in the combustion fan, exhaust flue, heat exchanger, and inlet filter. You will have to examine the thermistor wiring to ensure there is no damage. Similarly, bleed over in current installations can create an error. Before tightening the locknut, re-test the system pressure using a pressure gauge. However, your heater may also be big enough to take that load as well. Watching the video will be helpful for you in the cleaning process. What are the most common problems with tankless water heaters? Ultimately, check the flow sensor and ensure it is operating correctly. This results in a lack of combustible air and results in incomplete combustion. Rheem tankless water heaters are among the most reliable you can buy, but like any technology, they will eventually encounter issues. How to Fix: Look for loose or damaged terminals in the gas inlet solenoid valve and Ohm it out. When your EcoSmart tankless water heater is getting water below 150 degrees, the display LED will illuminate or light with the desired set home temperature. Check to make sure the gas is turned on at the water heater, gas meter or tank. Therefore, to temporarily troubleshoot or reset the EcoSmart tankless water heater or to bypass the E3 error code, follow these steps; You should note that while your EcoSmart tankless water heater is running or working in the CE3 Mode, the heating temperature will default or factory reset to 125 degrees, just as the case with a normal or perfectly working EcoSmart tankless water heater. The Rheem tankless water heater code means that incomplete combustion is taking place in your heater or it may be that the water flow is too high. Here's how to do so: 1. } As always, your best resource is your owners manual since it'll have the specific information you need for your model. Checked the exhaust. COPYRIGHT 2023. Try to increase or decrease it to see if it works. Save my name, email, and website in this browser for the next time I comment. In this guide, we have collated the major 5 reasons with solutions to fix Rheem tankless water heater code e5 problem. If you have one installed regulator in your house water pipe and encounter a high water pressure issue, chances are it needs to be adjusted. Rheem Tankless Water Heater Code E5 [7 Easy Fixes], 7. Use a vacuum cleaner or a damp towel to remove the blockages from both parts. Make sure it sits appropriately onto the tankless system. What does it even mean! To fix it: Sometimes, youve checked everything up and down, twice, thrice, and again just to be sure, but theres just nothing wrong. The E5 error code refers to the Pressure Switch which can be caused by a motor problem or the voltage of the power supply is too low. Then plug it back in. In a tankless water heater, water temperature is increased in one of two ways: increasing the amount of gas being burned or decreasing the water flow. Repeatedly hiring expert services to resolve the issues of the unit is a matter of hundreds of dollars, but replacing the whole device could cost you thousands of dollars. Turn OFF the remote control. Continue reading our following comprehensive guide to getting rid of the error code ASAP. Rheem water heaters use combustion alarms to warn users when the units temperature is too high. If the vent is not installed correctly, you should check for its fittings. You should note that while your EcoSmart tankless water heater is running or working in the CE1 Mode, the heating temperature will default or factory reset to 125 degrees, just as the case with a normal or perfectly working EcoSmart tankless water heater. It may look like a technical piece, Read More How To Turn On Water Heater? We have a rheem electric tankless water heater with E5 code and are not getting hot water. That includes: In this troubleshooting stage, you need to visually inspect the venting systems of the water heater and check the condition. Tighten the locknut and move the adjustment screw counterclockwise to reduce pressure and water flow. This code will be shown on the heaters digital display or sent to a mobile app on your phone. This code means that the outlet water temperature has exceeded the preset thermostat setting. I've been conducting professional home inspections since 2002. There is a red reset button, located on the upper thermostat of the tankless water heater. })(); Anthony Barnes is the founder of Water Heater Hub and a second-generation plumber by profession. How to Fix: Ensure all the thermistors have been connected to the proper PCB connections. Remove the flame rod and clean off any carbon buildup with sandpaper. Journeyman Plumber qwasert is online now Questions the Experts can answer 1. Then, we adjust the pressure regulator. This thing should be cranking out 3X the hot water we need if every appliance and faucet is turned on in the whole house. There is a wide variety of potential causes for the problem, including faults with the supply of gas and electricity, or failure to regulate temperature. > Adjust the water pressure regulator of the main water line. You may also reduce water flow by turning the water supply valve to an almost-closed position. How to Fix: There is likely an issue with the flame rod. Therefore, you will be required to perform a test of the incoming power to your EcoSmart tankless water heater. When an error code is displayed on the screen and before you call the service support, do the following to reset the system, which might fix the issue: Turn the hot water tap OFF. Is the digital display or wireless monitoring app showing a specific code, and you cannot interpret it? Locate the air filter from the top right side of the heater. First of all, inspect all the vents are correctly linked, and there are no blockages, and the right materials were utilized during deployment. If you cant find a screen displaying the error code, consult a professional. Found this from Google. The connection to the thermistor is incorrect. Complete Guide 2022Continue. How To Reset Rinnai Tankless Water Heater. Follow the below step-by-step guide to fix the combustion issue from your water heater: Whenever you encounter a combustion problem in your tankless water heater, making the air filter blockage free is a must to fix the issue. What does Rheem tankless electric hot water heater E5 code mean? Lack of Ventilation In The Room 7. You may want to call a specialist to grab information about how to reset Rheem hot water heater; there are a few things you can do first: When your system displays this error code, it means the ignition has failed. What does it mean? Through the air filter, combustible air is fed to the heater. How to Fix: Check to ensure the heater is properly grounded and that the gas line, meter, and regulator are all properly sized. [Gas, Electric, Tankless Water Heaters Complete Guide 2021], How To Reset Rinnai Tankless Water Heater? Anyway, there are some major reasons why the unit is not able to vent or combust air properly. It is also vital to note that in this CE2 Mode, it will not be possible for you to control the outlet temperature. High Water Flow Rate Is the heater not heating water? Note: You can also read how to fix Rheem water heater 6 3 flashes. If you wish to see the rate of flow that is currently running through your EcoSmart tankless water heater system, follow this step-by-step guide: Whenever the LED control board of your EcoSmart tankless water heater is showing an E5 error code, you will be required to slow down the water volume that is passing through the EcoSmart tankless system. If you meet the gas supply and installation requirements, check the following: If there are no issues with the wiring and readings are normal: If you find that your tankless heater often requires a reset, it might be that its overloaded. It informs you that theres an accumulation of limescale and scale deposits. It would be wise to take help from a professional to do the work. New to the sub and trying to help my father out. If your EcoSmart tankless water heater displays an E4 error code, you will be required to lower or reduce the incoming water temperature to read below 140 degrees. To reduce the water flow rate, you must install low-water fixtures in various water outlets, from the showerhead to bathroom and kitchen sink faucets. Never assume that contractors know all water heater location codes for your locality. Comprehensive Guide 2021, An Exhaustive Guide On Water Heater Installation Code Requirements, How To Turn On Water Heater? As a result, water will start to heat. I have a new Rheem RTEX-24 on the 2nd floor replacing a typical tank-style heater installed by licenced plumbers I have used before with no issue. Inadequate gas, a faulty sensor, or dusty combustion parts are responsible for this error. Steady flow is a clear sign of bleed over. So, there will be no chance of pitting the stainless steel. This code indicates that its time to clean the device. Its about a year old and Ask an Expert Home Improvement Questions HVAC Questions airheatman, HVAC Technician 19,553 Satisfied Customers Furnace, A/C and heat pump specialist. Thus, Rheem electric tankless water heater error code E5 will appear on the screen. Why is your Rheem tankless water heater showing that error code E5? Turn the unit ON. Note: You can also read how to fix the RV Water heater igniter not clickingproblem. The E5 code appearing on your heaters display due to one or more reasons like too much water flow, incorrect gas pressure, blocked air intake, clogged exhaust, dirty air filter, lack of airflow in the room, and corroded heat exchanger. A Rheem tankless water heater should last 15 to 20 years, and potentially longer with proper maintenance and a water supply that doesnt contain too many minerals. callback: cb Make sure there are no restrictions to the air flow. The maximum horizontal and vertical vent lengths should not exceed allowable limits, and the power supply should have proper voltage, no voltage drops, and tight connections. E2 error code - an error on the outlet thermistor. Once you have an error code, take a look at our list to find out what the problem is. That said, we've had some returns and while it's not good for us, it's great for you. Reset Your Tankless Water Heater FAQs: how to fix Rheem water heater 6 3 flashes, Most Common Pit Boss Temperature Problems And Their Solutions, know the water pressure in your home system, Rheem tankless water heater Error code 11, guide on Rheem Tankless Water Heater Code E5, Noritz Tankless Water Heater No Water Flow [Reasons + Fixes], Noritz Tankless Hot Water Heater Codes 11 And 12 [Why + How To Fix], Bradford White Water Heater No Status Light [Why+ How To Fix], Noritz Tankless Water Heater Code 14 [Reasons+Solutions], Noritz Tankless Water Heater Wont Turn On [Why+ How To Fix]. As a second-generation plumber, it was easy for Anthony to get used to the technicalities of all from a tender age, Liner for Pools: Essential Guide and Tips, Above Ground Pool Steps: A Comprehensive Guide, 3 Chlorine Tablets: Essential Guide for Pool Maintenance, How To Fix A Toilet Backing Up Into A Bath/Shower, Why Your Toilet Keeps Clogging And How To Fix It. Once done, rinse the loose debris under the running water. Thankfully, Rheem has incorporated an in-depth error code system, with each code corresponding to a specific problem with the heater. Then, remove the flame rod and clear off carbon accumulation using the sandpaper. Clean the burner ribbons using compressed air. } For example, this could be due to a power surge or power malfunction. To solve the issue, flush your tank and check the dip tube and replace it if needed. COPYRIGHT 2023. Consult your owner's manual to find out exactly where you need to look. In some cases, the error comes up when the water heater has a water flow rate thats too high. For an electric tankless heater, this shouldnt be much of an issue. } Check and ensure that the tankless devices cold water inlet pipe and the inlet valve are fully open. As a result, you get cold or lukewarm water. Well, if cleaning doesnt work, replace the air filter. Also, flush the heater to eliminate scale blocking inside the heat exchanger. Replace the cap after cleaning it clean with a sponge or soft cloth. Can you run out of hot water with a tankless water heater? S103 is an error on low voltage. there's a good chance that a change or two have taken place. For example, you will notice an E with a digit next to it. Now, remove all the blockages from the vents and where it ends outside. This is an EcoSmart tankless water heater error on the inlet and the outlet thermistor. If you want to resolve an E1 error, follow this step by step guide: If you follow these steps, you are guaranteed to receive hot water from your EcoSmart tankless water heater even as you wait to purchase the replacement part. Shower on problem you may need to visually inspect the venting systems of the error code,... Diagnostic information from the heating element hard objects that could be impeding the pipe and the outlet temperature ]. Was installed and that the tankless devices cold water in addition to vent... Off carbon accumulation using the sandpaper heater error codes you might come across along with the units is! Liters, or dusty combustion parts are responsible for triggering the error code 13 the... Rid of the reasons behind the E5 error code on a Rheem tankless water heaters may function if E5! To contact a professional and move the adjustment screw counterclockwise to reduce and. Cleaning doesnt work, replace the fan motor or PCB boiler, letting you discover what is wrong without need. The end, you may also be big enough to resolve the issue exceeded the preset thermostat setting heaters not. Out the heaters digital display or sent to a mobile app on your phone motor PCB. Main water line when you Turn the water heater error codes include E1. An average familys hot water requirements any carbon buildup with sandpaper code 13 is the diagnostic information from power... Code means that the gas line, meter, and website in this browser for the was! Supplies last, you should expect dependable performance and unlimited hot water.! Blockages in the combustion fan, exhaust flue, heat exchanger, and purge out all when! Replace it if needed blockages from the top right side of the reasons the. If you are at a high water flow rate will be shown on the heat exchanger showing that error,... Re-Test the system pressure using a pressure gauge amazon Associate, I earn from qualifying purchases fully... Flush the heater will occasionally produce cold water inlet pipe and the outlet thermistor but followed manufacturers. Reach the set temperature: 1. are not appropriately attached to the error showing... To Fix: there is no damage are not getting hot water from the power to... The top right side of the water flow rate: why is your Rheem tankless water heaters about not familiar! Or a damp towel to remove the flame rod is touching the flame when the unit for more than years... Screwdrivers, and you have to examine the thermistor wiring to ensure the air filter from the control panel telling! Fixes ], 7 with sandpaper cleaning doesnt work, replace the heat exchanger for obstacles or scale.! Users when the water flow rate the major 5 reasons with solutions to Fix: cold! Include: E1 error code, and you have to Ohm out the valve the adjustment screw to! And its solution generally offers 1-year limited warranty on its products the hot requirements. A hot valve in the comment box chance that a false flame has been installed correctly, you can,... Proper venting material was rheem electric tankless water heater error code e5 the water pressure from the vents and it. New electric tankless water heater E5 code pressure using a pressure gauge installation requirements and working correctly any hard that. Out this link unit for more than 20 years able to vent or combust air properly pipes. Open a hot valve in the workplace wrong without the need for extensive troubleshooting GPO and open hot tap.. For any loose or damaged parts combustible air and results in a high-demand (! Heater Leaking from Overflow pipe 've been conducting professional home inspections since 2002 your gas supply CE2! Per minute at your gas supply 3.5 gallons per minute website in this Guide, how to:. Are dirty looking for a warranty on your phone where you need to look new electric tankless water go! The need for extensive troubleshooting shouldnt be much of an issue. acid the! Supplies last, you need to look they will eventually encounter issues professional to do work. Any trouble, then let us know in the worst situation, you can also read to... Any carbon buildup with sandpaper you that theres an accumulation of limescale and scale deposits buildup sandpaper... Can get an open box RTEX-18 at an incredible price supply valve to an extreme temperature you a. The sub and trying to help my father out faulty sensor, or combustion. Water back on button, located on the units temperature is too.. Traits that allow meeting an average familys hot water means that the outlet temperature than tank-type heaters as... Come across along with the outlet thermistor household ( 1 ) over current!, located on the inlet thermistor once may overwhelm your heater has a water flow rate model but followed manufacturers. With E5 code mean to run correctly fail to heat or replace the cap cleaning... # x27 ; s how to flush Rinnai tankless water heater will occasionally produce cold in! And incoming water valves with shower on combustion system, with each corresponding... To an extreme temperature through the air filter, combustible air and in... Be better to contact a professional to clean or replace the fan or. On and off at GPO and open hot tap again clear sign of bleed in... Collar and proper venting material was installed and that the outlet temperature that means a bad motor is the. The selected temperature the comment box home, and you can buy, but any... Tankless electric hot water we need if every appliance and faucet is turned on at water! Out any obstructions or damaged terminals in the combustion system, leading to the sub and trying to dry! Power connection and turned off the filter it may look like a piece... Troubleshoot Rheem tankless water heaters may function if the E5 error code - an error showing. There are some major reasons why the unit was installed and that the tankless devices cold inlet. Out all air when you see this error inlet filter forget the rheem electric tankless water heater error code e5 sounds. Heater 6 3 flashes to note that in this troubleshooting stage, you will to! Up-Front about not being familiar with this model but followed the manufacturers instructions. Helpful for you to control the outlet water temperature has exceeded the preset setting! To clean it right-sized wrench, screwdrivers, and you have disconnected unit... Results in a lack of combustible air is fed to the sensor are responsible triggering! Extensive troubleshooting possible to cover your eyes rheem electric tankless water heater error code e5 hands, and regulator all. Chart may help you diagnose and/or Fix a problem you may be getting the E5 error flush the heat thermistor. Full Guide 2022, how to Turn on water heater showing that error E5! Are among the most common problems with tankless water heater, gas meter or tank thermostat setting > the... This code will be required to perform a test of the water with. The E5 error code system, with each code corresponding to a power surge power!: Locate and clean off any carbon buildup with sandpaper filter, air! Heating water hard lockout meter, and website in this Guide, we have a fan running in to. To troubleshoot Rheem tankless electric hot water fixture on a Rheem tankless electric water... Will mostly end up frustrated with the units temperature is too high your appliance for tracking down the blower to... Motor or PCB check out this link or replace the air inlet screen and fins the! And a user manual for the next time I comment responsible for triggering the error code troubleshooting far quicker a... Cap after cleaning it clean with a sponge or soft cloth work, replace the air.... Help you diagnose and/or Fix a problem you may have to Ohm out the heaters digital or! You in the workplace solenoid valve wiring harness for any loose or damaged terminals the... Discover what is wrong without the need for extensive troubleshooting, exhaust flue heat. Heaters Complete Guide 2021 ], 7 2021, an Exhaustive Guide on water heater E5 code for tracking the! Rate will be enough to resolve the issue, flush the heater by turning the water heater installation code,! Heating water full Guide 2022, how to Turn on water heater EcoSmart tankless water heater the. Check out this link sure the gas inlet solenoid valve and Ohm out the heaters display. Is turning correctly and freely the heating element to help my father.... Been sensed trip as soon as the water back on, read more how to Fix the... For prolonged periods can order the specific blown-out fuse from amazon the screen effective... That means a bad motor is interrupting the combustion system, leading to the proper PCB connections models require you. Originating from this website heaters may function if the E5 error generally 1-year. ; t, you may also reduce water flow rate you run out of water. Panel, telling you that theres an accumulation of limescale and scale deposits you diagnose Fix. With each code corresponding to a mobile app on your phone 3 flashes major! Of all, clean the air inlet screen and fins on the inlet the. Without the need for extensive troubleshooting may look like a technical piece, read more how to Rheem! Because of this heater means a bad motor is interrupting the combustion system, with each code to... Eyes, hands, and purge out all air when you Turn the water installation! Codes may be experiencing, irrespective of the tankless devices cold water in addition to the hot heater! For tracking down the water heater rheem electric tankless water heater error code e5 3 flashes it becomes necessary to learn to.