The water heater will trigger the error code E5 if there is too much water flow. Ensure the condensate line is installed correctly and is within specifications. 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. Check the air intake and exhaust venting. 3. 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. 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. One for the hot side and another for the cold side. Consult your owners manual to find out exactly where you need to look. See if the fins on the heat exchanger are dirty and clean as necessary. However, if you are mechanically inclined, keep scrolling. Here faulty means either the blower motor itself gets defective or its housing gets clogged with dirt or debris. Our whole-home gas and electric models are great for homes with busy families, homes with luxury bathrooms and vacation homes, while our point-of-use electric models are ideal for a single faucet or shower. Rheem Tankless Water Heater Error Codes [The Complete Guide] 13 Common Rheem Tankless Water Heater Error Codes, 01. Reason: Remote Control Communication Fault. This means that the flow meter is not sending a signal to the computer which starts the machine. Simple. If your Rheem displays an error code 51, ensure the gas valve wiring is in good working condition and installed correctly. We recommend you read our in-depth guide on Rheem Tankless Water Heater Code 12. You may also want to ensure that the altitude settings are correct for your location. If your Rheem tankless water heater has been running continuously for over an hour you should look to reset the system. Our comprehensive Rheem Water Heater Troubleshooting guide will explain common is. Rheem Site Error code 93 should show when the unit has shown down and is a further warning to replace the neutralizer. Here is a list of common error codes for Rheem tankless residential water heaters. You may need to replace the heat exchanger thermistor or PCB. Rheem water heater blinking blue light 3 times. Check the vertical and horizontal vent lengths and ensure they meet the standards for safe operation. So, keep reading. Get DIY installation tips and troubleshoot common problems. Any help you could provide or resource you can point me to would be greatly appreciated. Ensure that the vent pipes are connected to the vent termination and that the venting meets various requirements (such as lengths, diameter, the construction material). Issues affecting the thermistor, such as wiring. Tankless models need routine maintenance to ensure they remain energy efficient. Rheem tankless water heater starts malfunctioning over time. Switch off the unit from the control panel. Inspect the gas valve wiring harnesses for loose or damaged terminals2. Apart from these, defective combustion systems, problems with the main burner or pilot, and faulty motor are other culprits responsible for throwing this error code. And lastly, check out the burner manifold pressure. Cookie Duration Description; cookielawinfo-checkbox-analytics: 11 months: This cookie is set by GDPR Cookie Consent plugin. This is another fault that you may want to check with a professional. Reading through Rheemserror code guide, youll notice the description for each error code is quite specific. Consult the guide and see whether you have a grasp on the problem indicated by the code. If necessary, replace the remote control, remote control wiring, or the PCB. As an Amazon Associate, I earn from qualifying purchases. Replace the water control assembly or the PCB if necessary. Rheem error code 99 can mean abnormal combustion caused by a blocked or obstructed fan, heat exchanger, air intake, faulty combustion air sensor, or exhaust venting. There may also be foreign material or obstructions in the burner chamber so check that there are no blockages for the flame at the flame rod (or rods). All Plumbers are screened, licensed, and insured. If the unit does not work after resetting it using the Min and Max buttons, you may be dealing with a faulty PCB. If you fail to start the water heater after replacing the remote control or its wiring, we are 100% sure the culprit is the PCB or control board. If your Rheem tankless water heater displays an error code P1, the minimum water flow rate is insufficient for the main burner ignition. You can use 100-grit sandpaper to remove the carbon buildup from the flame rods. After you see a code on a tankless water heater, a common first step is to reset the device. Ensure the unit is installed correctly, the hot and cold water lines are not mixed up, and there is enough water flow. Once your have your parts together, here are the steps to descale the water heater. A clogged heat exchanger, venting system, and air intake filter are responsible for making the ODS thermocouple defective. Call the technician because the water heater is overheating. Replace it if necessary. More specifically, it will focus on troubleshooting your Rheem tankless water heater and what to do when you encounter the dreaded error code. If not, the problem could be caused by the blower motor and the PCB. Troubleshooting Tankless Water Heater Error Codes: Rheem Reason: Insufficient Heat Exchanger Temperature. Rheem error codes 92 and 93 are typically found on condensing units. Common symptoms, problems, and fixing tips. Check the vent terminal and exhaust venting and ensure nothing blocks the airflow near or around the unit. Tankless Electric Water Heaters. window.mc4wp.listeners.push( If it does, you should check if the pulse output is from it. Peter has been a homeowner for 35+ years and has always done his own repair and improvement tasks. Check the number 11 where I break down the error code 61. Its about a year old and - Answered by a verified HVAC Technician We use cookies to give you the best possible experience on our website. It will be better if you install the heat tape close to the exit to the main drain to get the best output. Check that the program chip is properly installed and that the control board recognizes the right type of gas, which could be propane or natural gas. Every electric water heater has a reset button, and with good reason. Leave the unit for 2o minutes. Finally, the heat exchanger should be checked to make sure that the fins, fan, and air intake all appear to be clean. What the Rheem Tankless Water Heaters Error Codes Mean, and How to Remove and clean any buildups and blockage in the condensate drain system. Call the technician. Once you clean or change the blower motor, follow the steps in reverse to reinstall the blower motor. Worked yesterday. To fix this error, replace the neutralizer. The fan motor should also have the right voltage and may be water damaged due to condensation. Cause: The gas shutoff valve is not open completely. If you encounter an code, it will be displayed on your Rheems digital thermostat display. Ensure no unit parts are blocked, clogged, or obstructed by debris, foreign objects, or dirt and scale build-ups. Rheem Tankless Water Heaters Error Codes Breakdown Error Code: No Code It occurs when the water flow rate is extremely low. If all seems good, the problem may be a faulty PCB. Rheem tankless water heaters provide water on demand. Replace the PCB or the communications cable if necessary. To learn more about error code 14, read this in-depth guide. An error code 90 typically indicates that there are blockages in the heat exchanger or blower motor. Inspecting their condition and cleaning them will typically fix this error code. Remember, Rheem tankless models need routine maintenance to remain energy efficient. Rheem error code 99 indicates that the fan motor is not creating enough ventilation. If the water doesnt flow, we recommend you increase the flow rate. Of course, the internet is likely your go-to resource for any current information relating to your Rheem tankless water heater. We have an in-depth guide on Rheem Tankless Water Heater error code 13 where we broke down the way of adjusting burner manifold pressure. If the dip 1 switches are switched off, the unit can be prevented from working properly. Also, check that the vent terminal was installed properly on the device. A Clogged Neutralizer Is Causing Rheem Tankless Code 29. Check the vent terminal and exhaust venting. If the heat exchange fins get clogged, release the blockage. Rheem error code 29 indicates that the outlet temperature is too low. Water flow is too low, or the shutoff valve is not fully open. Rheem Electric Tankless Water Heater Error Code E4, 04. Knowing that the ignition has failed is straightforward enough yet finding out why can prove difficult. Features and error codes may have changed over the years so finding an updated resource is vital to ensure that you know what to do when a fault looks to have occurred. Rotate the thermostat to achieve your desired water outlet temperature. How to troubleshoot Rheem tankless water heaters by using the service error codes chart. Rheem error code 51 indicates a problem with the gas inlet solenoid valve. Now, you may ask- how can I understand whether the solenoid valves function correctly or not? Unline electric water heater units, a Rheem tankless unit displays an error code when something out of the ordinary happens. So, I highly recommend you to call a professional to handle this. Rheem error code 14 means the overheat film wrap has been activated, usually caused by a hot spot. 14. The thermistor should also be free of any limescale build-up and may require a clean. If not, continue reading. It is a significant upgrade to the version that uses tanks and delays water supply till it's hot. Discover how to replace a faulty hot surface ignitor in your water heater with our comprehensive troubleshooting guide. Error code 35 should require you to inspect each of the thermistor connections to the control board as they should all be securely connected. You can also check that the ohms are correct though your sensor may need to be replaced. Check if the fan motor shaft moves freely and is not blocked or damaged. Cause: Most of the time, the water heater doesn't start because the hot water tap is not fully open, so the water flow is low. A flame failure is a little different from a failure to ignite and will likely require a specialist to take a look. Ensure that the altitude is set correctly for your particular needs and the vents meet the necessary size requirements for safe operation and use. The diagnostics become simpler since the Rheem tankless heaters use the electronic control board and advanced technology with an optional remote controller and control panel. If the remote control works, we bet the wiring is at fault. Tankless water heaters generally last considerably longer than tank-type heaters, as they don't hold corrosive water for prolonged periods. As mentioned above, there are several more error codes you can potentially encounter with a Rheem tankless water heater. 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. All content found on this website is intended for informational and educational purposes only. On top of this, you must ensure the drain will not allow backflow. Use the error code guideline below to identify the problem, or. [Fixed], Honeywell Water Heater Gas Valve Reset (How-To Guide), 15 Common Rheem Error Codes [Ultimate Guide], Rheem Tankless Water Heater Code 11 (Fixed), Top 5 Navien Tankless Water Heater Problems [Fixed], Whirlpool Duet Dryer No Power To Control Panel (Causes + Solutions). If the readings are okay, you may be dealing with a faulty PCB. Rheem error codes 80 and 81 indicate a gas cut-off or extinction failure. Solution: You must descale the water heater. To fix this issue, you need to slow down the flow rate. There may be a fundamental issue with your control board that it is not programmed properly or that the wrong gas type has been entered. Have a different tankless water heater brand that needs troubleshooting? Check the wiring, the Molex connections, and ensure no scale buildups or debris. 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, AO Smith Tankless Error Codes: Problems And Troubleshooting, Where You Can Find Current Information For Your Rheem Tankless Water Heater, The Error Codes On A Rheem Tankless Water Heater. How To Reset Rheem Tankless Water Heater? A Definitive Guide Water flow is below the minimum required. See the tankless water heater reviews from Water Tech Advice if youre considering a replacement. Error E5 codes may be the result of a malfunctioning combustion alarm. To fix the Rheem error code 71, ensure the gas inlet solenoid valve is installed correctly and its wiring harness is tight and not damaged. If its incorrect, you should adjust it. How to use diagnostic system and fix the problems using the error codes that appear on the remote controller. The gas control assembly, the main burner, the flame rod electrodes, or the PCB may need to be replaced. The Best Portable Tankless Water Heaters (On-The-Go Hot Water), The Best Condensing Water Heaters (Go Environment-Friendly), 5 Best Hot Water Recirculation Pumps of 2023, Best Tankless Water Heater Flush Kits of 2023. } 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. After another 20 seconds, switch the remote control on and the water supply too. Rheem Tankless Water Heater Error Code 10, 06. Takagi Error Codes | Troubleshooting Guide and Repair Tips, AO Smith Tankless Error Codes | Problems | Troubleshooting, John Wood Tankless Error Codes | Troubleshooting Tips, Rinnai Error Codes | Troubleshooting Rinnai Water Heaters, Tankless Water Heater Problems | Troubleshooting and Repair Tips, Noritz Error Codes Guide | Troubleshooting Noritz Water Heaters, How to Install Water Heater Heat Traps | Water Heater Parts Guide, Hot Surface Ignitors: Troubleshooting, Testing, Replacing, How to Install a Hybrid Water Heater - DIY Tips. If the resistance is not according to specifications, it should be replaced. If the error code disappears, then the problem is within the venting. Error code 76 on Rheem Tankless Water Heater is an indication of faulty communication with the remote control. Otherwise, you need to change the PCB. There may also be loose or damaged connections attributed to the motor wiring harness that could be the true cause of the error code. Insufficient fuel or restricted gas flow, faulty gas solenoid valves, defective igniter wire harness, and a problem with the igniter are some caveats that trigger the error code 11. If you dont get the appropriate voltage reading (8 to 16 VDC), you should replace the water control assembly. There may also be blockages in the heat exchanger which should be removed. If not, you should replace the flow meter sensor or the flow control valve of your Rheem Tankless Water Heater. forms: { Receiving error code 61 -Faulty Blower Motor. This neutralizer is specially designed to keep the drain condensate away from the water heater. Rheem error code 21 means the air intake filter is not working correctly. Rheem tankless water heaters provide water on demand. These error codes correspond to a particular problem with your boiler, letting you discover what is wrong without the need for extensive troubleshooting. After 10 seconds, plug it back in. To erase the error code 13, start with cleaning the dirty flame rods. Rheem error code 76 indicates a failure in communication with the remote control. If the unit starts, the problem is either with the remote control or wiring. Every Rheem tankless water heater, either non-condensing or condensing, utilizes the computer board to monitor the heating process, adjust the parameters, and help troubleshoot the potential problems. Why Your Tankless Heater Requires a Reset. The most common codes include Codes 5, 11, 13 . He has a good standing reputation for superior skills in heating, air conditioning, hot water tanks, and indoor air quality systems. Its recommended that you refrain from using the water heater until the issue with the blinking lights has been resolved. The content is not intended to be a substitute for professional advice or consultation. Reason: Current fault with the Blower Motor. 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. Tilt down the computer board, which will reveal the blower motor. Before you do ask for extra help, find out what the error code means and you may be able to solve it without making a service call. This error is preventable by descaling the water heater on at least once a year. Below, we will show you how to fix those issues to clear away the error message. It means the desired water volume is too high that exceeds your desired preset temperature. Replace the water control assembly or the PCB if necessary. You may want a screwdriver or a wrench to remove the nuts on the front of the device. There are a few reasons why the reset button might trip. The resistance of connector R between #Black3 and #Yellow5 wires will be 4K to 10K ohms. Solution: Make sure that the hot water tap is open enough to provide at least the minimum required water flow. { Besides, your water heater will throw the error code P1 if the water flow sensor goes bad. The cookie is used to store the user consent for the cookies in the category "Analytics". Locate the flame rods on the front right side, Remove the rod by unscrewing the brackets that secure them to the burner, Clean them and screw them back into place. Take the time to remove any obstructions from the venting as well as where the vent terminates outside. We earn a commission if you purchase at no additional cost to you. Rheem Water Heater Error Codes - HVAC BOSS First off, make sure there is enough fuel in your gas tank. If the readings are looking good, the PCB may be at fault. There are different reasons for why the water would flow through the water heater, but nothing actually occurs, specifically, that the water is not heated. If your Rheem displays an error code 35, inspect and ensure all thermistor connections are not loose and installed correctly. The gas pressure to your water heater should range between 1.2- 3.5Kpa. In some cases, the error comes up when the water heater has a water flow rate that's too high. How to use a diagnostic system to repair a faulty heater. If the water heater has the mixing valve installed and does not operate properly, it must be replaced. If they are then you may want to contact a specialist to take a look. Appliance. However, you should replace the PCB if the fans pulse output or the fan doesnt receive enough voltage. 3 Common Causes (and How To, Troubleshooting Electrolux Dishwasher Error Codes, 5 Common Problems with Camplux Water Heaters. Clean the inlet filter if necessary. A false flame being detected may also necessitate a service call, yet there are certain steps to take first. Rheem error code 71 means a problem with the gas inlet solenoid valve. Replace the PCB if the error code 82 persists. If you do not feel comfortable performing this yourself then you can contact a professional to do it for you. You may need to flush the system using distilled white vinegar though do be careful as the water would naturally be hot. Compare HSI to other ignition systems. Solution: If your tankless water heater is using natural gas, make sure that there is no interruption in gas supply from the distributor. Those error codes dont only help you understand the actual problem with the unit but also make it a breeze to fix them. The reset button is there for safety reasons. 1318 - Rheem and Ruud Heat Pump dB Level 1318 Technical Bulletin Also, we broke down the troubleshooting steps to clear the message. Ensure there are no buildups, foreign objects, or deposits near or around the unit and its venting system and combustion chamber. Otherwise, you should replace the remote control with a new one. For the air intake, remove then clean the air inlet filter and clean both the heat exchanger fins and the combustion air fan. good stuff mate i have a rheem gas 871624pfj tankless it comes with code e 51 ,i turn unit off it clears error code and will work and stay working untill you stop using hot water then back to e51,cleaned filters ,still same any help pls. Rheem error codes 92 and 93 indicate that the neutralizer is due for a replacement. In this guide, we will break down 11 day-to-day water heater status light codes, including: Rheem water heater flashing red light 1 times. Just turn off the water supply valve to slow down the flow. Check that the gas supply is working properly and that the gas pressure is ideal, as per the manufacturers recommendations. In general, here are some additional things to check in order as you evaluate the issue with your unit. To troubleshoot this error code, confirm that the water bypass solenoid has the right voltage going through it. Pipe dope may also cause a blockage inside the water flow control turbine. Next, access maintenance information to determine the flow rate. It means the desired water volume is too high that exceeds your desired preset temperature. You should do a flushing service every two to three years to remove carbon buildup and keep the hot water flowing. If you are confident that youre not overworking your unit, consult a professional. . You will see a number that is flashing on the display, which will be accompanied by a beeping sound. Check if the maintenance information displays the heat exchangers temperature. Some simple issues can result in the water flow being low and you should be able to solve them yourself. Rheem error code 00 indicates that the unit has worked continuously for more than one hour. If your water heater is old then you may want to pay more attention to the warning signs that it may be failing. Troubleshooting John Wood tankless water heaters. Tankless water heaters generally last considerably longer than tank-type heaters, as they dont hold corrosive water for prolonged periods. Then, remove the front access panel. You could also check the outlet thermistor, heat exchanger thermistor, and the gas valve are all in good working order. How do you clear the error code on a Rheem tankless water heater? But this task requires a lot of elbow grease. Check for an operational igniter and for any damage to the igniter wiring harness. Shut off the water heater by unplugging it, Open the end caps on the valves and attach the hoses to them, Fill a bucket with water and add vinegar to it. Rheem Water Heater Error Codes - YouTube What does E5 mean on my Rheem tankless water heater? If there is enough current running, you may need to replace the burner assembly; otherwise, replace the PCB. If the maintenance information does not indicate the water being too hot, check the hot outlet thermistors resistance readings. It will usually be red or black, and may be labeled "reset.". Ignition failure at start up. (function() { Flame failure during operation. Rheem Tankless Water Heater Code 76 [How To Fix] - Lil Dutch Uncle Now, you may ask- how can I determine whether the suspect is the remote control or its wiring? Troubleshooting for a switch malfunction could mean turning it off and on again by forcing a reset on the control board, all you need to do for that is press the MIN and MAX button. Step #3: Then, disconnect the cord from the power connection. As a retired plumber, Peter now spends his time teaching others how they can fix leaks, replace faucets, and make home improvements on a budget. However, some models require that you install an app on your phone where you will receive these updates. Several reasons are responsible for the heater to throw this error message. From top to bottom of this guide, we broke down every error code our tankless water heater displays. Follow the same troubleshooting procedures outlined in error code 61. Solution: If you cannot find the problem in the venting system, and cannot remove what is blocking the regular operation, call the service. Remove any blockage you see. However, you can also find a wealth of information from the owners manual which will be specific to your model of a tankless water heater. Replace the PCB or fan if necessary. As always, your best resource is your owners manual since it'll have the specific information you need for your model. Check the air inlet filter, clean it, and ensure the vent pipes are connected correctly. According to Rheem, the error code 10 will pop up when the fan motor fails to create sufficient ventilation. Company's make changes through the years, and Rheem has been in business a long time with a wide range of tankless water heaters . Use your Rheem heater manual as a reference when performing any repairs, and make sure to use the technical support number (1-866-720-2076) whenever you're unsure what to do. on: function(evt, cb) { Then, locate the two terminals connected with the remote control. There is an issue with the PGFR (proportional gas flow regulating) valve. Rheem tankless water heaters are among the most reliable you can buy, but like any technology, they will eventually encounter issues. First, check the exhaust and venting flue for any blockages. It indicates a neutralizer drainage failure. Check the gas pressure; it might be too low, or the gas valve is not fully open. It will make your Rheem tankless error code troubleshooting far quicker. Ensure the airflow is not restricted or blocked. If the unit reaches 230F, however, it will again display an error code 15, shut down, but not start automatically on its own. If there is no information, check the inlet thermistors resistance readings and replace the thermistor if they are not good. If you can solve a problem or a fault without having to make a service call then, not only will you learn more about how the water heater works, but you will likely save yourself some money.
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