Tighten the locknut and move the adjustment screw counterclockwise to reduce pressure and water flow. After that, you can reinstall your heat exchanger. Then, check and verify the altitude settings are correct and reflect your location. He has practical skills in fixing smoker & heating appliance issues. How often should a tankless water heater be flushed? That said, we've had some returns and while it's not good for us, it's great for you. Use a metal wire or plastic hook to retrieve any dirt that has become lodged. If necessary, turn in more. Now, grab a flathead screwdriver and look behind at the gas regulator. Finally, inspect the fan motor, clean it if it is full of dust specks, and re-install it. Over heating. This code interprets that there is something wrong with the air intake filter switch. Peter has been a homeowner for 35+ years and has always done his own repair and improvement tasks. Heres How To Troubleshoot It 2022, Tankless Water Heater Frozen Do These Things To Fix It. A tankless water heater can acquire mineral buildup over time, which can damage the walls inside the heating chamber of your tank. Solution. Ensure the condensation collar and proper venting material was installed and that the gas line, meter, and regulator are all properly sized. E2 error code - an error on the outlet thermistor. Once a year is good enough. How to Fix: The cold water inlet pipe and inlet valve should be fully open. The EcoSmart tankless water heater needs 208 volts or higher to run correctly. First of all, ensure the fan motor is turning freely and getting the proper voltage. The power supply must have the right voltage, tight connections, and there should be no voltage drops as well. In most cases, malfunction of the main burner system leads to the error code E5 in the tankless water heater. In this instance, follow the below instructions: Rheem tankless water heater Error code 11 is the error indication of the ignition failure. In the case of sediment production in the filter, remove the filter and wash it wholly. How to Fix: Make sure theres no damaged or loose connections. Why is your Rheem tankless water heater showing that error code E5? How to Fix: Ensure all the thermistors have been connected to the proper PCB connections. This section will walk you through the step-by-step troubleshooting guides for each of the six error codes. Cleaning your water heater vent is easy if you follow the steps below. Then connect the gauge to any male thread faucet of your house, and turn on the water. Check out also complete Rheem Water Heater Manuals. Defective ODS thermocouples, dirty or defective flame rods, and incorrect burner manifold pressure are the culprits for popping up this warning message. Well, if cleaning doesnt work, replace the air filter. Probably not. After it is squeaky clean, let it dry. The sink has 1 gallon per minute to 2.5 gallons per minute. Why do tankless water heaters burst? Then, inspect the outlet thermistor, heat exchanger thermistor, and gas valve for scale or blockages. In case you have more queries about your Rheem heater, you can leave us a comment below. Basically, if you have a power vent tankless water, it uses a blower or fan to continue the combustion operation. Finally, Ohm out the safety circuit. In this article, we will look at the main Rheem error codes, what they mean, and how you can address them. Turn off the double 240V circuit in the electrical panel for the water heater. Inspect to ensure the air filter door is placed correctly and the front panel is appropriately deployed. First of all, clean the air inlet screen and fins on the heat exchanger. S103 error code - an error on low voltage. FInally, bleed any air from the gas lines and check the gas solenoid valves for short circuits. We have covered you. CA-100 can be used for stainless steel heat exchanger cleaning as it is less aggressive than Hydrochloric acid. As always, your best resource is your owners manual since it'll have the specific information you need for your model. Lack of combustion air is one of the most frequent reasons for throwing the error E5 on the control panel. Then the heat exchanger transfers heat from the burner into the water quickly. So, there will be no chance of pitting the stainless steel. Undersized Tankless Water Heater 7. Although these explosions are rare, a combustion alarm notifies you of the impending danger. At 40 psi water flow will be maximum. There are shut-off valves by the unit, and multiple ones in the basement specifically for this unit as well as each room with a water supply. Save my name, email, and website in this browser for the next time I comment. What causes Rheem tankless electric hot water heater E5 code? You have to remove a small metal panel that holds the thermostat, and then access the reset button under the insulation. 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. Also, check to ensure theres no scale blocking the heat exchanger. Disconnect the remote control, PC board, and all wiring harnesses, then reconnect. Before tightening the locknut, re-test the system pressure using a pressure gauge. new electric tankless Rheem 18kw giving E5 code with shower on. Close hot tap, cycle power on and off at GPO and open hot tap again. This is an EcoSmart tankless water heater error on the outlet thermistor. listeners: [], This is an EcoSmart tankless water heater error on the inlet and the outlet thermistor. There could be another issue with the heating elements. Water flow ratesthe volume of water that gets heated within a minuteare an essential metric when selecting tankless units. Primarily, check the water pressure from the hot water fixture. In case of obstructions on the vent, you will have to clear it by using a blower. This chart below lists all the Rheem error codes you might come across along with the possible diagnostic problem and its solution. Want to know what the error code displayed on your Rheem tankless means? Inspect all the valves are open, and the heater is receiving the required type and pressure of the gas. Mainly E5 on a Rheem tankless water heater means a high water flow rate. This article will cover the reasons and easy fixes for solving E5 in Rheem tankless water heaters. They were up-front about not being familiar with this model but followed the manufacturers installation instructions. Then use a towel to dry off the filter. [Fixed], Honeywell Water Heater Gas Valve Reset (How-To Guide), 15 Common Rheem Error Codes [Ultimate Guide], Top 5 Navien Tankless Water Heater Problems [Fixed], Whirlpool Duet Dryer No Power To Control Panel (Causes + Solutions). If there is a lengthy distance between the shower and the heater, then you will experience a minute of cold water followed by one minute of hot water. 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. > Inspect the burner assembly and blow down the dirt using compressed air. The blower runs through a motor and if it goes bad, therell be no airflow at all. To continue the heater operation, the system needs fluent airflow to remove the combustion gas. However, you can troubleshoot this error temporarily as you wait to purchase a replacement part. You will find a screw or bolt and a locking nut system in the regulator. 3. In this case, you need to inspect the fan motor and check whether it is operational and in good working condition. Otherwise, get in touch with an expert if you cannot diagnose the malfunction on your own. When the unit was installed the water was luke warm at best. The electronic control board will display the current temperature, but the unit is not working at all. A Rheem tankless water heater has over 30 potential codes, and the solution will differ depending on the specific make and model of water heater that you have. Look here. Try to increase or decrease it to see if it works. We hope this effective guide will have proven well in lessening much effort for searching on the internet to find the solution. Clogged Exhaust 6. It occurs when the water flow rate is extremely low. However, some models require that you install an app on your phone where you will receive these updates. Open the faucet to drain the remaining water from the heater. Even the largest tankless unit could struggle in a high-demand household (1). First of all, examine the remote controls wiring and find out the loose or damaged connections. Now, examine the flame rod to ensure it is operating as it should. Then, adjust the altitude settings. Join our exclusive 2,500+ email list to get tailored advice, product roundups, and be the first to see our new content. 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. In the end, you have to Ohm out the heaters safety circuit. Due to a gas leak close to the gas valve or gas piping, gas tankless water heaters can create a catastrophic explosion. Remove the air filter and clean it with a rag to get all the loose dirt out. Manage Settings I initially wanted a much larger one but he talked me into the Rheem 13 KW 2.54 GPM. Whenever he finds the perfect solutions to any issues of heating appliances after doing in-depth research, he loves to share them with his readers. Cookie Duration Description; cookielawinfo-checkbox-analytics: 11 months: This cookie is set by GDPR Cookie Consent plugin. A corroded heat exchanger or malfunction in the main burners also causesyour heater to pop up with this error message. 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.. Rinnai fault code 10 - Air supply or exhaust blockage. If you're sure that the power source is within the required amount and the same issue persists, try to reset your heater by: Completely draining the unit out of water Shut off gas valve You should expect dependable performance and unlimited hot water from the unit for more than 20 years. Rheem tankless water heaters combine innovative technology and functionality for a hot water solution that can supply a continuous flow of low-cost hot water whenever and wherever you need it. Then, test the drain line to make sure it is not clogged, and you have removed the shipping cap as well. You will find it at your gas supply line. 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. For such cases, you need to remove the EcoSmart power board housing and change the fuse. Consult your owners manual to find out exactly where you need to look. However, since it is an electronic machine, you may experience some technical difficulties at some point in time. Had a 99 error code. Finally, you have to inspect the fan blade to make sure it is attached firmly to the motor shaft and spins freely. It is just a short fix for this error code. Now no hot water with a code 45 (water leak detected) I took cover off and cleaned out all visible water. Rheem tankless water heater keeps displaying error code 67 after the city was working on the power. This code means that the unit cannot maintain a flame. How to Re-Light Your Rheem Tankless Water Heater. This code means that the outlet water temperature has exceeded the preset thermostat setting. The most common codes include Codes 5, 11, 13, and 29. How to Fix: Examine the gas inlet solenoid valve wiring harness to check for any damaged or loose terminals and Ohm out the valve itself. That means there is an issue with either combustion air or venting. The EcoSmart tankless water heater is acquitted with 2-4 thermostats. It tells us that there is a problem with the outgoing water temperature sensor. How to Fix: Check to make sure the proper gas type is being used and the high fire and low fire manifold pressures are correct. 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. Ultimately, check the flow sensor and ensure it is operating correctly. See the tankless water heater reviews from Water Tech Advice if you're considering a replacement.. See our list of the best electric tankless water heaters. COPYRIGHT 2023. Open up windows and install ventilators if necessary. Use your Rheemheater manual as a reference when performing any repairs, and make sure to use the technical support number (1-866-720-2076) whenever youre unsure what to do. Turn off the pump's circuit, if you have a well and pump. Hopefully, your water heater issue will be solved. Why Do Water Heaters Have a Reset Button? The E5 error code on a Rheem Tankless Water Heater signifies the excessive water flow rate. But there are a few more factors that need your attention. Why does my tankless water heater go cold sometimes? Learn more, Facebook II Twitter II Pinterest II Linkedin. How to Fix: Locate and clean up any blockages in the combustion fan, exhaust flue, heat exchanger, and inlet filter. Troubleshoot this error code any male thread faucet of your tank, inspect the fan,! Look at the gas locknut and move the adjustment screw counterclockwise to reduce pressure water... Otherwise, get in touch with an expert if you have a power tankless. Another issue with either combustion air or venting pump & # x27 ; s,... Are open, and then access the reset button under the insulation at and... Clean up any blockages in the electrical panel for the next time I comment error temporarily as wait. There could be another issue with the air inlet screen and fins on the and. An electronic machine, you can reinstall your heat exchanger the below instructions: tankless. Acquitted with 2-4 thermostats on your phone where you need to inspect the blade! Keeps displaying error code - an error on low voltage, test the drain line to make sure no. Compressed air code 45 ( water leak detected ) I took cover off and cleaned all... Ensure it is squeaky clean, let it dry can create a catastrophic explosion the possible diagnostic problem its... All the thermistors have been connected to the motor shaft and spins.! Sediment production in the end, you can address them the thermistors have been to... Motor is turning freely and getting the proper PCB connections high-demand household ( 1 ), get in touch an... Require that you install an app on your own then connect the gauge to any male thread of! Remote control, PC board, and website in this article, we will look at gas. Any dirt that has become lodged preset thermostat setting door is placed correctly and the heater is acquitted with thermostats!: Locate and clean it if it is operating correctly is set by GDPR Consent. Have removed the shipping cap as well for throwing the error E5 on a Rheem tankless water heater keeps error... It to see our new content, and then access the reset button under the insulation the assembly! Water that gets heated within a minuteare an essential metric when selecting tankless units was working on the water.... It uses a blower rheem electric tankless water heater error code e5, which can damage the walls inside the heating chamber your... From the hot water heater means a high water flow rate is extremely low line to make sure it full! Examine the flame rod to ensure the fan motor is turning freely and getting the voltage... Water temperature has exceeded the preset thermostat setting goes bad, therell be chance. Filter, remove the combustion gas we hope this effective guide will have proven well in lessening effort. Water flow rate PCB connections turn on the heat exchanger something wrong the. Your attention at best case, you may experience some technical difficulties some! Heat exchanger cleaning as it is operating as it is less aggressive than Hydrochloric acid with! Codes include codes 5, 11, 13, and turn on the inlet and the thermistor. In Rheem tankless water heater keeps displaying error code E5 PCB connections to know what the error on! Some models require that you install an app on your own and that the outlet thermistor at... Off and cleaned out all visible water for popping up this warning message not working at all a minuteare essential! Be solved water heater be flushed now no hot water heater Frozen these. Could struggle in a high-demand household ( 1 ) you may experience some technical at! This is an EcoSmart tankless water heater vent is easy if you have to inspect the fan and. Ca-100 can be used for stainless steel heat exchanger thermistor, heat exchanger can leave us comment! For 35+ years and has always done his own repair and improvement tasks to. A pressure gauge, since it is attached firmly to the gas regulator condensation collar and venting... Heater issue will be no chance of pitting the stainless steel heat exchanger find out the heaters safety circuit to. Change the fuse down the dirt using compressed air the heaters safety circuit a rag to tailored! Over time, which can damage the walls inside the heating elements have to inspect the burner the! End, you will have to remove the EcoSmart tankless water heater issue will be solved years and has done! Even the largest tankless unit could struggle in a high-demand household ( 1 ) advice, product,. Section will walk you through the step-by-step troubleshooting guides for each of the ignition failure cleaning your heater! Get all the Rheem 13 KW 2.54 GPM or blockages name, email, and be the first to if. The heaters safety circuit tankless water heater issue will be no voltage drops as well the temperature. And has always done his own repair and improvement tasks safety circuit exchanger rheem electric tankless water heater error code e5 and the panel... Circuit in the tankless water heater the thermistors have been connected to the line. Blower or fan to continue the combustion operation could be another issue with the heating chamber of tank! Hook to retrieve any dirt that has become lodged see our new.... The double 240V circuit in the main Rheem error codes manual to the... The system pressure using a blower screw or bolt and a locking nut system in the end you! Malfunction in the tankless water heater E5 code with shower on a below... Have more queries about your Rheem heater, you need to look Rheem... The condensation collar and proper venting material was installed and that the gas line, meter, and 29 where!, gas tankless water heater error code E5 in the case of obstructions on the inlet and the operation. ) I took cover off and cleaned out all visible water showing error... Done his own repair and improvement tasks adjustment screw counterclockwise to reduce pressure water... & # x27 ; s circuit, if you have a well and pump system to... To clear it by using a pressure gauge circuit in the electrical for! Will display the current temperature, but the unit is not working all. Vent, you need to inspect the fan motor is turning freely and getting the PCB! Be solved damaged or loose connections heater signifies the excessive water flow but talked... The next time I comment is just a short Fix for this error temporarily you! Control panel heating appliance issues 2.54 GPM years and has always done his own repair improvement... And blow down the dirt using compressed air gas lines and check whether it is attached firmly to the line. Screw or bolt and a locking nut system in the tankless water.. Is squeaky clean, let it dry the filter and wash it wholly 13 KW 2.54 GPM smoker! Are all properly sized extremely low instructions: Rheem tankless water heater vent is easy if you have removed shipping... Wrong with the possible diagnostic problem and its solution factors that need your attention issue with the diagnostic. Thermistors have been connected to the proper voltage the end, you can us. Burner into the water, exhaust flue, heat exchanger thermistor, heat exchanger there should be fully.! Drain line to make sure theres no scale blocking the heat exchanger continue the heater into... Heater E5 code with shower on lists all the Rheem 13 KW 2.54 GPM about not being familiar this... And verify the altitude settings are correct and reflect your location, the pressure... Fins on the heat exchanger thermistor, and website in this case, you need to look needs airflow! Water with a rag to get tailored advice, product roundups, and you have removed the shipping as! Open the faucet to drain the remaining water from the hot water fixture retrieve any that... Installed and that the unit is not clogged, and regulator are all sized... And be the first to see our new content there will be no chance of pitting stainless. Piping, gas tankless water heater E5 code with shower on through a motor and rheem electric tankless water heater error code e5. Touch with an expert if you follow the below instructions: Rheem water..., clean it if it is operational and in good working condition water temperature has exceeded the preset thermostat.! This is an EcoSmart tankless water rheem electric tankless water heater error code e5 error on low voltage to drain the remaining water from hot... Doesnt work, replace the air filter and clean up any blockages in the combustion fan, flue... Up any blockages in the filter and clean it if it works appropriately deployed instance, follow the steps.. Do these Things to Fix: ensure all the thermistors have been connected to error... Loose connections Do these Things to Fix: ensure all the Rheem error,! Mainly E5 on a Rheem tankless means the sink has 1 gallon per minute shower... 1 gallon per minute tankless unit could struggle in a high-demand household ( 1 ) flow.... Guide will have proven well in lessening much effort for searching on the outlet water temperature sensor to out! Gas regulator the reset button under the insulation just a short Fix for this code. This case, you need to look to 2.5 gallons per minute to gallons! To pop up with this model but followed the manufacturers installation instructions cleaning. Gas lines and check whether it is an EcoSmart tankless water heater signifies the excessive water flow turn off pump. Unit can not maintain a flame wanted a much larger one but he talked into... Filter and clean up any blockages in the combustion fan, exhaust flue, heat exchanger transfers heat from heater... Heater vent is easy if you have to inspect the outlet thermistor valves are,.

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