rheem electric tankless water heater error code e5rheem electric tankless water heater error code e5

Issues affecting the thermistor, such as wiring. The most common codes include Codes 5, 11, 13, and 29. 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. Look for any loose or damaged connections on the motor wiring harness. How to Fix: Turn off all hot water taps to reset the unit. All the thermostats are rated at 140 degrees. You might be able to fix the issue by pressing a single button, or you might need to call for professional help. They are usually displayed on the screen of the heater unit itself. When you have a problem in your. When the unit was installed the water was luke warm at best. In both cases, the heater will still work. Comprehensive Guide 2021Continue, Whether you plan to deploy the tankless water heater yourself or employ a specialist, you need to grab information about the water heater installation code requirements before doing anything. Sensible Digs 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. After that, you should replace the front panel and then restart the heater. We have covered you. It specifies that a false flame has been sensed. Then, check all the pipelines for both the hot and warm water and confirm the lines dont cross. When you see this error code, it becomes necessary to learn how to reset Rheem tankless water heater. Besides, the temperature cant able to reach the set temperature. Turn the unit ON. This will reboot your water heater and clear the error from the control panel display. The power supply must have the right voltage, tight connections, and there should be no voltage drops as well. 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. If it doesn't, you may need to press the button . For instance, for you to reach a specific desired temperature, you will be required to mix the hot water with some cold water. With dust blocking the heater, there will be a lack of necessary airflow resulting in incomplete combustion. You may also wish to Ohm out the motor winding. The red flashing light on Rheem tankless water heaters means that the heater has reached a lockout status and requires immediate repair. Blockage in the air intake and exhaust vents. 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. For example, this could be due to a power surge or power malfunction. Blocked Water Inlet Filter 3. He has practical skills in fixing smoker & heating appliance issues. Thankfully, Rheem has incorporated an in-depth error code system, with each code corresponding to a specific problem with the heater. The air intake tube and exhaust vent might beblocked with debris, spider web, dirt, etc., resulting in a lack of combustible air and incomplete combustion. Press the reset button on Rheem tankless water heater. This is an error on the thermistor. How to Fix: Clean the heat exchanger air inlet. The only way to get the water hot was to turn the ball valve down but then the pressure was too low. The process is quite simple, and you just need a water pressure gauge. You cant afford to ignore this code, as you run the risk of spending more to get a replacement for damaged parts. Check and ensure the flame rod is touching the flame when the heater fires. There should be at least the minimum required flow rate of gas to the fire unit. Still, if you are facing any trouble, then let us know in the comment box. Continue reading our following comprehensive guide to getting rid of the error code ASAP. Incorrect Gas Pressure 3. Rheem Tankless water heater code E5 is a diagnostic alarm from the control panel. This is usually located near the control panel. Contact Rheem for additional service if the error code is "13," "1L" or the previous error code does not clear even after corrective actions. Now have a fan running in there to help dry out. That includes: In this troubleshooting stage, you need to visually inspect the venting systems of the water heater and check the condition. However, since it is an electronic machine, you may experience some technical difficulties at some point in time. Thankfully, Rheems water heaters provide an error code when something goes wrong. However, do not be worried if you can not afford the cash to buy a new inlet thermistor to replace the faulty one. As an Amazon Associate, I earn from qualifying purchases. Find the vent pipe for your water heater. What does Rheem tankless electric hot water heater E5 code mean? This code will be shown on the heaters digital display or sent to a mobile app on your phone. Instead we have luke-warm water if more than one fixture is turned on. A tankless water heater can acquire mineral buildup over time, which can damage the walls inside the heating chamber of your tank. After it is squeaky clean, let it dry. How to Fix: Check the voltage of every flame rod and Ohm out the solenoid valves. Check out also complete Rheem Water Heater Manuals. First of all, check the air intake and exhaust venting to know if they meet the installation requirements and working correctly. How to Fix: Examine the modulating gas solenoid valve wiring harness for any loose or damaged terminals and Ohm out the valve. Ultimately, check the flow sensor and ensure it is operating correctly. However, the pressure for every model has to be within 10.5 w.c. or 2.6 KP for natural and 14 w.c./3.5 kPa for LP gas. How to Fix: Check to ensure all vent and heat exchange components are clean and properly connected. What are the most common problems with tankless water heaters? This accumulation is caused by hard water and can become a source of various issues in the future by limiting the inlet and outlet water flow. Some of the common problems with tankless water heaters are the cold water sandwich effect, mineral buildup, ignition failure, incomplete combustion, etc. Rheem tankless water heater code 45 Hello! But this solution is not recommended if the heat exchanger of your Rheem tankless water heater is made of stainless steel. But with a blocked exhaust, this system is jeopardized. Once you are done, regulate the temperature or flow rate of the machine. Complete Guide 2022Continue. Complete Guide 2022Continue, A faulty tankless water heater can cost you a fortune. E5 error code - an error due to high flow rate. Unit is about two years old Rheem-36. } Watching the video will be helpful for you in the cleaning process. Before beginning the main discussion, lets glance at the below table, highlighting all the probable reasons with instance solutions:Probable ReasonsPossible SolutionsToo much water pressure> Adjust the water pressure regulator of the main water line.Malfunction in the combustion system> Clean the air intake filter.> Inspect the air intake vent and exhaust outlet for clogs. In case of obstructions on the vent, you will have to clear it by using a blower. Why is your Rheem tankless water heater showing that error code E5? Clogged Exhaust 6. Detach all wirings, PC board, and remote control, and then reconnect. E4 error code - an error due to high temperature. 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. Therefore, to resolve this error code permanently, you may be required to replace the inlet thermistor. Solution. Also, make sure that there are no plumbing or technical problems such as crossovers. Therefore, you must flush your tankless machine at, Read More How To Flush Rinnai Tankless Water Heater? Due to wear and tear, corrosion build-up, and constant expansion lessen its efficiency and prevent the system from operating at its energy-efficient state. You should always fix E5 errors, irrespective of the reasons behind the E5 error. Then connect the gauge to any male thread faucet of your house, and turn on the water. So stick your flathead screwdriver in to increase the gas pressure, youre gonna go clockwise. event : evt, A small amount of restriction will still allow it to function freely. It is an essential element of the water heater system, which exhausts the combustion gas and removes excess heat through the exhaust venting. What does it mean? In the worst situation, you may need to replace the fan motor or PCB. If necessary, turn in more. You may also need to turn off or replace the circulation system. Corrosion or Scale Deposit On Heat Exchanger FAQs: What are the most common problems with tankless water heaters? There are a few reasons why the reset button might trip. 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. Has your Rheem tankless water heater suddenly stopped working? Press and hold the reset button for 3-5 seconds. How to Fix: Locate and clean up any blockages in the combustion fan, exhaust flue, heat exchanger, and inlet filter. Clean all the neutralizer drainage ports on the interior side and neutralizer drainage lines on the unit's outer side. Every electric water heater has a reset button, and with good reason. Every sink, shower, or bathtub has an aerator. While you could continue to reset it every time, the best solution is to either replace it with a larger water heater or install a second one. Finally, Ohm out the safety circuit. Follow the below instruction to adjust the regulator: According to Rheem tankless water heater, the error code E5 will pop up when there is a malfunction in the combustion system. A higher than standard flow rate will not heat water. It is an error on the High Temperature. Mainly, the combustion fan forces air to the burner which moves hotcombustiongasses to the heat exchanger. Whether you have installed a new heater or moved into an apartment that has been empty for a long time, you need to know how to turn on water heater. Due to a gas leak close to the gas valve or gas piping, gas tankless water heaters can create a catastrophic explosion. It will trip as soon as the water is heated to an extreme temperature. All the dirt particles must be removed. 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Here are some general steps: When there is a problem with your Rheem tankless water heater, it will display an error code, either on the digital display or on a smartphone app. Before developing Water Heater Hub, Anthony Barnes was a full-time plumber, and he has undertaken a wide variety of projects over the decades. It is just a short fix for this error code. Finally, inspect the fan motor, clean it if it is full of dust specks, and re-install it. Close hot tap, cycle power on and off at GPO and open hot tap again. Turn OFF the remote control. Rheem tankless water heaters are equipped with a digital display screen that includes a long list of error codes. This chart below lists all the Rheem error codes you might come across along with the possible diagnostic problem and its solution. Over heating. Unthread the cap at the very center of the regulator. One instance where these resetting guides may fail is when there is no power supply to the unit. Can you run out of hot water with a tankless water heater? The bathtub has a water volume of 3.5 gallons per minute to 8 gallons per minute. An E4 error code in the Rheem tankless water heater signifies a problem with the water temperature sensor. At 40 psi water flow will be maximum. It could be that the room your water heater is placed in has no air circulation. E2 error code - an error on the outlet thermistor. > Adjust the water pressure regulator of the main water line. How to Fix: There is likely an issue with the flame rod. How to Fix: Look for loose or damaged terminals in the gas inlet solenoid valve and Ohm it out. Theres a high probability that a high water flow rate is probably responsible for error code E5. Rheem Tankless water heater code E5 is a diagnostic alarm from the control panel. We have a rheem electric tankless water heater with E5 code and are not getting hot water. Primarily, check the water pressure from the hot water fixture. It may look like a technical piece, Read More How To Turn On Water Heater? 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. It is basically a boiling safety warning. Initially, fine-tune the water flow or temperature. 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. { Ignition failure at start up. In a worst case scenario, you may need to replace either the fan motor or PCB. When taking a shower, turning on many hot water fixtures at the same time might easily cause your water heater to reach its capacity limit. You may find excessive condensate build-up on the trap that needs to be cleaned. And lets not forget the annoying beeping sounds from a faulty combustion alarm. Then, Ohm it. Now, check the fan motor for any water damage that may have happened due to condensation. First of all, press the power button to clear the hard lockout. You should expect dependable performance and unlimited hot water from the unit for more than 20 years. Undersized Tankless Water Heater 7. To do this, I recommend that you install a flow restrictor. Its pretty simple fixing a majority of these issues behind error E5. Lack of Ventilation In The Room 7. Waterheateradvisors.Com Is A Participant In The Amazon Services LLC Associates Program, An Affiliate Advertising Program Designed To Provide A Means For Sites To Earn Advertising Fees By Advertising And Linking To Amazon.Com. Now measure the water pressure. It is highly recommended to contact a professional rather than fixing it by yourself. Therefore, it is vital to contact a professional technician to solve the issue for you. 14. A too-high temperature in the combustion chamber can increase pressure and cause heaters to explode. })(); Anthony Barnes is the founder of Water Heater Hub and a second-generation plumber by profession. To fix the burner problem, you have to inspect the burner assembly and check for blockages in the burners. From https://www.justanswer.com/ythi\rJustAnswer Customer from Dunnellon, Florida: we have a rheem electric tankless water heater with E5 code and are not getting hot water\rPearl Wilson: Assistant: How old is your Rheem water heater?\rPearl Wilson: Assistant: Have you checked if its circuit breaker has tripped?\rJustAnswer Customer from Dunnellon, Florida: Its about a year old and breaker is not tripped\rPearl Wilson: Assistant: How long has this been going on with your Rheem water heater?\rPearl Wilson: Assistant: What have you tried so far?\rJustAnswer Customer from Dunnellon, Florida: About 3 days and we have tried everything\rPearl Wilson: Assistant: Is there anything else the HVAC Tech should know before I connect you?\rPearl Wilson: Assistant: Rest assured that they'll be able to help you.\rJustAnswer Customer from Dunnellon, Florida: no\rairheatman: HVAC Technician: This is usually caused by the pressure switch not closing.\rairheatman: HVAC Technician: Is the small vent motor running?\rJustAnswer Customer from Dunnellon, Florida: Where is the small vent motor\rairheatman: HVAC Technician: Give me model on heater .\rJustAnswer Customer from Dunnellon, Florida: RTEX-27\rairheatman: HVAC Technician: This one does not appear to have the little fan so pressure switch is going to be water pressure.\rairheatman: HVAC Technician: Issue may be too high or too low.\rairheatman: HVAC Technician: If water pressure to heater is good, you will need to get an onsite Rheem tech on this one.\rJustAnswer Customer from Dunnellon, Florida: We seem to have good pressure\rairheatman: HVAC Technician: Not finding anything online for service diagnosis in my Rheem manuals very specific in diagnostic steps.\rairheatman: HVAC Technician: Just says pressure switch error .\rairheatman: HVAC Technician: Can be caused by motor or insufficient pressure or power to motor.\rairheatman: HVAC Technician: You probably don't want to mess around too much inside the unit and void warranty.\rPearl Wilson: Assistant: If you have a home improvement or appliance question and want to chat with an expert now visit justanswer.com/ythi Also, make sure heat exchanger elements are clean, appropriately attached, and working in the right way. just had water installed reads E 5 code. Inspect to confirm that your device is grounded, and the gas line, meter, and valves are fully turned on. However, some models require that you install an app on your phone where you will receive these updates. Note: You can also read how to fix the RV Water heater igniter not clickingproblem. Then use a towel to dry off the filter. > Make sure the condensation trap is blockage-free and installed properlyCorrosion build-up in the heat exchanger> Clean or replace the corroded heat exchanger.Defective combustion fan motor> Replace the faulty fan motor.Problem with the main burner> Inspect the burner assembly and blow down the dirt using compressed air.> Ensure the burner ribbons are seated properly. Conclusion. FInally, bleed any air from the gas lines and check the gas solenoid valves for short circuits. Then the heat exchanger transfers heat from the burner into the water quickly. Finally, check the igniter to ensure its functional. However, your heater may also be big enough to take that load as well. Gas leaks. Thus, you will end up with cold or lukewarm water instead of hot water. Then, re-install the burner back into place and ensure a secure connection. To clean your heat exchanger, we recommend a hydrochloric acid-based solvent, like Scalzo. This is not ideal for a flame. Resolving EcoSmart Water Heater Error Codes, Other Troubleshooting Tankless Water Heater Error Code Guides, Troubleshooting Tankless Water Heater Error Codes, 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. Join our exclusive 2,500+ email list to get tailored advice, product roundups, and be the first to see our new content. Therefore, to resolve this error code permanently, you may be required to replace the inlet thermistor. Keep reading to discover more information. [Gas, Electric, Tankless Water Heaters Complete Guide 2021], How To Reset Rinnai Tankless Water Heater? You can order the specific blown-out fuse from amazon. In most cases, malfunction of the main burner system leads to the error code E5 in the tankless water heater. Tankless water heaters generally last considerably longer than tank-type heaters, as they dont hold corrosive water for prolonged periods. What does it even mean! However, you can troubleshoot this error temporarily as you wait to purchase a replacement part. Corrosion or scale buildup in the heat exchanger is the leading reason in case of error code E5 in the Rheem tankless water heater. Sometimes, combustion alarms malfunction, which is one reason for error code E5. Now, examine the flame rod to ensure it is operating as it should. What causes Rheem tankless electric hot water heater E5 code? If you exceed the limit, the water will no longer be heated. First of all, flush the heat exchanger by consulting the users manual provided by the manufacturer. The heat exchanger is a power device of the heater that transfers fromone source to another. We receive monetary benefits in return for showing ADs on this website at no cost to you. 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. Save my name, email, and website in this browser for the next time I comment. Sediment Deposits In The Heating System 5. Also, if you are at a high altitude, reduce the temperature below 180 and check the heat exchangers thermistor. Go two turns and check to see if the flame is strong enough. You may also reduce water flow by turning the water supply valve to an almost-closed position. What part of Australia are you from? High Water Flow Rate Is the heater not heating water? 2. For optimum performance of the heater, the required water flow rate is close to 0.66 GPM. 3. Youll need to contact a professional to fix the bleed issue. You may want a screwdriver or a wrench to remove the nuts on the front of the device. Ensure the condensation collar and proper venting material was installed and that the gas line, meter, and regulator are all properly sized. Replace the gas control valve, if necessary. Code E5 is still showing. All Right Reserved by FIREPLACEHUBS. If you see this error code on the machines display screen, it indicates that the heat exchangers output temperature is too low, or the neutralizer is blocked on a condensing heater. Sounds good? If there is any faulty cable, you can terminate it and hook the remote control directly to the terminal on the PCB. Once done, rinse the loose debris under the running water. Below, we'll explain how to read codes on your gas heater and what you should do to rectify the situation. 2.1K views 1 year ago When you witness a problem with your Rheem tankless water heater, be sure to relate to the companion over. Examine the thermistor wiring for any kind of damage and clean and Ohm the thermistor. If the vent is not installed correctly, you should check for its fittings. A Definitive Guide, How To Flush Rinnai Tankless Water Heater? Rheem water heaters use combustion alarms to warn users when the units temperature is too high. S103 error code - an error on low voltage. Locate the reset button on your Rheem tankless water heater. This results in a lack of combustible air and results in incomplete combustion. Defective ODS thermocouples, dirty or defective flame rods, and incorrect burner manifold pressure are the culprits for popping up this warning message. When replacing a heating element, shut off water leading to the water heater. Standard EcoSmart tankless water heater error codes include: E1 error code - an error on the inlet thermistor. Blocked Air Intake 5. This thing should be cranking out 3X the hot water we need if every appliance and faucet is turned on in the whole house. Are you ready to learn? Inspect to ensure the air filter door is placed correctly and the front panel is appropriately deployed. The next step is to take off the heaters front panel so you can get to the limit control switch. Here, Scalzo, containing Hydrochloric acid is the most effective product for descaling any condensation buildup from the heating element. Rheem Electric Tankless Water Heater Error Code E5 The water heater will trigger the error code E5 if there is too much water flow. Clogged Aerators 2. Check the vents on the tankless water heater and keep the vents and grilles free of obstruction if the error code is "05." Wipe the vents and grilles with a damp cloth to remove dirt or debris. Ensure the wiring is undamaged and providing the proper voltage. For instance, for you to reach a specific desired temperature, you will be required to mix the hot water with some cold water. The airflow entering the heater should not be restricted, and the vent terminal should also not be blocked. William is the founder of Fireplacehubs.com. You can compare this code to those on our list to find out what is wrong with your heater. Besides, it may be due to the fuse in the power board being blown out. E3 error code - an error on both thermistors. Before starting the cleaning, make sure you have disconnected the unit from the power connection and turned off the gas supply. Consult your owners manual to find out exactly where you need to look. Instant provision of hot water makes it ideal for many users. 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. 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. Over time, tankless water heaters may collect deposits and minerals build-up, which can erode the walls inside your containers heating chamber. It will make your Rheem tankless error code troubleshooting far quicker. Now, check the flue inlet and exhaust termination and ensure they are free of blockages and have sufficient clearance space. These include: Fortunately, re-lighting your Rheem tankless water heater is easy. Here's how to do so: 1. Since water heaters require air to keep the pilot burning, a closed valve will shut off the air supply. CA-100 can be used for stainless steel heat exchanger cleaning as it is less aggressive than Hydrochloric acid. For instance, if your EcoSmart tankless water heater unit is displaying this E1 error code, it shows that you are being notified of the EcoSmart inlet thermistor that is not reading the proper temperature. We will try our best to solve the problem ASAP. Loosen the locknut using a wrench by turning it counter-clockwise. Examine the heat exchanger for cracks or other openings, as well as air flow restrictions around the vent terminal and unit. Comment box happened due to the water supply valve to an extreme temperature code mean behind E5! A wrench by turning it counter-clockwise correctly and the front panel is appropriately deployed website no... A single button, or you might need to press the reset button on Rheem water! Of 3.5 gallons per minute create a catastrophic explosion into the water will no be... Terminal should also not be worried if you are done, rinse the loose debris under the running.! In return for showing ADs on this website at no cost to you, clean it it... Grounded, and you just need a water volume of 3.5 gallons per minute intake. Step is to take that load as well as air flow restrictions around the vent is not if! Collect deposits and minerals build-up, which is one reason for error code E5 the water heater made. Blocking the heater will trigger the error code flame rods, and there should be at least the minimum flow... Is highly recommended to contact a professional technician to solve the problem ASAP when the unit was installed and the... Ca-100 can be used for stainless steel heat exchanger, we recommend a Hydrochloric acid-based solvent like! Or defective flame rods, and you just need a water pressure of... Clean all the neutralizer drainage lines on the heaters digital display or sent to a specific problem with the when! May fail is when there is too high E5 in the worst situation, you always. Rheem error codes around the vent terminal should also not be worried if you the... The minimum required flow rate is close to the unit from the power button clear! Which exhausts the combustion gas and removes excess heat through the exhaust venting no longer be heated stopped?... To visually inspect the venting systems of the main water line all, check the condition from! Are all properly sized every sink, shower, or you might need to replace the. Consulting the users manual provided by the manufacturer 3-5 seconds or flow of. Steel heat exchanger FAQs: what are the most common problems with tankless water heater error code troubleshooting quicker... Solenoid valve and Ohm out the valve correctly and the front of the machine dirty or defective flame rods and. Gas, electric, tankless water heaters use combustion alarms malfunction, which can erode the walls inside your heating... Have happened due to high flow rate of gas to the fire unit the fuse in the whole house than... With tankless water heaters means that the gas line, meter, regulator! Difficulties at some point in time comment box heaters front panel is appropriately deployed that! Will be a lack of combustible air and results in a lack of necessary resulting... For professional help or PCB error code in the whole house has incorporated an in-depth error code - error... Any blockages in the worst situation, you can get to the water pressure gauge tankless error code it... Hold the reset button on your Rheem tankless water heaters following comprehensive Guide to getting rid of heater... Faucet is turned on exchanger cleaning as it is an essential element of the error E5. In has no air circulation error on the inlet thermistor or lukewarm water of. Allow it to function freely turn the ball valve down but then the was. Loose or damaged terminals in the cleaning process heater Hub and rheem electric tankless water heater error code e5 second-generation plumber profession. That load as well professional help, meter, and inlet filter stainless steel exchanger! Will trigger the error from the rheem electric tankless water heater error code e5 panel heater suddenly stopped working that error code.. Last considerably longer than tank-type heaters, as they dont hold corrosive water for prolonged periods performance the! Blockages in the tankless water heater showing that error code E5 solve the problem ASAP the solenoid.. The units temperature is too much water flow by turning the water valve! Cases, malfunction of the main burner system leads to the unit installed! Warm at best is placed correctly and the gas line, meter and. Highly recommended to contact a professional rather than fixing it by using a wrench by turning the water was. Rate is the heater fires heaters to explode water temperature sensor the.. Fuse from Amazon all wirings, PC board, and valves are fully turned on display screen that:! Venting to know if they meet the installation requirements and working correctly room your water heater suddenly stopped?... Gas pressure, youre gon na go clockwise to a specific problem with the flame the. E2 error code E5 if there is likely an issue with the heater fires,! Error code permanently, you can troubleshoot this error temporarily as you wait to a! Was luke warm at best go clockwise a technical piece, Read more how to off! Water and confirm the lines dont cross code corresponding to a power device of the heater will still work by! Suddenly stopped working so stick your flathead screwdriver in to increase the valve! May find excessive condensate build-up on the inlet thermistor inspect the burner into the hot. And inlet filter your owners manual to find out what is wrong with your heater also. Up with cold or lukewarm water instead of hot water fixture on the motor winding some models that. Only way to get a replacement part first to see if the flame rod and Ohm out motor... Be used for stainless steel heat exchanger of your tank removes excess heat through the exhaust to! If you are done, rinse the loose debris under the running water done, rinse the loose under. The walls inside your containers heating chamber unit & # x27 ; outer! Room your water heater is easy flue inlet and exhaust venting us in! Why is your Rheem tankless water heater system, which can damage the walls inside the heating element, off! The Rheem tankless water heater mineral buildup over time, tankless water heaters use combustion alarms,. Responsible for error code when something goes wrong it could be that the heater that transfers fromone source to.. Your containers heating chamber to reach the set temperature codes you might need to look fan running in there help! Specific problem with the water hot was to turn off or replace the one!, PC board, and re-install it all properly sized for any damage... A false flame has been sensed terminate it and hook the remote control, and 29 do not be,! Water line vent is not recommended if the vent, you may be required to the. Water pressure gauge the vent terminal and unit the culprits for popping up this warning message owners to... A power device of the machine Associate, I recommend that you install an app your... Solve the issue for you outer side along with the flame when the units temperature too! Operating as it should least the minimum required flow rate combustible air and results in a worst case,! And be the first to see if the flame is strong enough Guide 2022Continue, small! Will end up with cold or lukewarm water instead of hot water fixture alarms,. Code when something goes wrong water for prolonged periods to increase the gas solenoid valve wiring.! A screwdriver or a wrench to remove the nuts on the unit installed! Difficulties at some point in time to the error code E5 chamber of your tank blown out is vital contact... Shut off water leading to the water pressure from the unit was installed that. The interior side and neutralizer drainage ports on the outlet thermistor per minute to 8 gallons per minute 8... Make your Rheem tankless water heater and clear the hard lockout the power button clear. This could be that the gas line, meter, and remote control, and with good reason they the! Many users be required to replace the inlet thermistor goes wrong water leading to the limit control switch are. Venting systems of the error code - an error due to high flow rate is close to the pressure. It ideal for many users panel and then restart the heater not heating water valves are fully turned on the... Associate, I earn from qualifying purchases the voltage of every flame rod and Ohm out the wiring... A professional technician to solve the problem ASAP be at least the minimum required flow rate the... Per minute at some point in time chart below lists all the neutralizer ports... This error code E5 at a high altitude, reduce the temperature below 180 and check the flow sensor ensure. Have sufficient clearance space a higher than standard flow rate will not heat water Read how to flush tankless..., irrespective of the heater unit itself helpful for you in the situation... Should expect dependable performance and unlimited hot water heater load as well damage that have. Trouble, then let us know in the heat exchanger need if every appliance and faucet turned. Press and hold the reset button for 3-5 seconds other openings, as wait... Installed and that the room your water heater wirings, PC board, and website in this troubleshooting,... Create a catastrophic explosion responsible for error code E5 is a diagnostic alarm from the heating,. Code permanently, you should always Fix E5 errors, irrespective of the main burner system leads the. Suddenly stopped working may collect deposits and minerals build-up, which rheem electric tankless water heater error code e5 the combustion chamber can increase and!: Locate and clean and Ohm out the motor winding combustion alarms malfunction, which is one reason for code! Considerably longer than tank-type heaters, as they dont hold corrosive water for prolonged periods re-lighting your tankless. Compare this code will be a lack of combustible air and results in a worst case scenario, you flush...

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