If you're looking for help fixing your Rheem Water Heater, look no further! In my experience, in most cases, it is a false flame code because when I look through the site glass, the flame is still visible. Then, inspect the heat exchanger fins for a clog and release the buildup. Code 1L indicates that there is a limescale build-up in the unit. LPG users check Propane bottle level. Your email address will not be published. If the heat exchange fins get clogged, release the blockage. 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. Rheem Error Codes - How to Read and What to Do Rheem Tankless Error Code Troubleshooting (23 Codes to Know) What does E5 mean on my Rheem tankless water heater? Close the hot water tap and turn OFF the remote. Common symptoms, problems, and fixing tips. 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. Otherwise, you should replace the remote control with a new one. . What does E5 mean on my Rheem tankless water heater? Check the flame rod itself to see whether there are defects. A fault with the water inlet temperature sensor would result in error code 31 and you may want to check certain elements of your Rheem tankless water heater yourself. Is your tankless unit beeping? Typical Gallons Per Minute. Check the heat exchangers resistance reading as part of the troubleshooting process. You could also check the outlet thermistor, heat exchanger thermistor, and the gas valve are all in good working order. You should follow the same troubleshooting steps as in error code 51. Ensure all parts are in good working condition, clean, and not blocked by a foreign object. listeners: [], Another fault could occur with your ambient thermistor which is the combustion air temperature sensor. If the error code goes away, the problem is within the vent system, and if it doesnt, the PCB or the blower motor should be inspected and replaced if necessary. In general, here are some additional things to check in order as you evaluate the issue with your unit. After 10 seconds, plug it back in. If you do not feel comfortable performing this yourself then you can contact a professional to do it for you. Replace the PCB or the PGRF valve if necessary. Cookie Duration Description; cookielawinfo-checkbox-analytics: 11 months: This cookie is set by GDPR Cookie Consent plugin. Troubleshooting Tankless Water Heater Error Codes: Rheem However, if you are mechanically inclined, keep scrolling. Your Rheem Water Heater will trigger this error code due to a faulty remote control, a bad PCB, and a damaged wire connection between the tankless unit and the remote. The neutralizer drainage ports should be clear and the neutralizer drainage line (see also 7 Awesome Tips For Sewer And Drainage Line Cleaning) outside the unit must be clear too. It will be better if you install the heat tape close to the exit to the main drain to get the best output. To troubleshoot this error code, confirm that the water bypass solenoid has the right voltage going through it. A flame failure is a little different from a failure to ignite and will likely require a specialist to take a look. However, you should replace the PCB if the fans pulse output or the fan doesnt receive enough voltage. So, keep reading. From this chapter, you can learn about the most common error codes the tankless water heater shows. Code 05 indicates an Imperfect Combustion Alarm. If you encounter this, heres what you can do: Code 10 indicates that the flame has been lost on the unit. . Every electric water heater has a reset button, and with good reason. Check the heat exchanger air inlet and perform regular maintenance to flush the unit with scale buildup. Look here. See an examplehow to descale a Bosch tankless heater. Call the technician. Check the water flow servo and the cold water bypass system. The gas pressure to your water heater should range between 1.2- 3.5Kpa. Below, we will show you how to fix those issues to clear away the error message. Rheem error code 32 means there is a problem with the heat exchanger thermistor. If you are calling the manufacturer, make sure to have the following info ready: A list of Takagi error codes for easy troubleshooting of Takagi tankless water heaters. Also, make sure you tidy up the air inlet filter, combustion air fan, and heat exchanger fan. 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). } Heres what you can do: Code 12 signifies that the water heater does not detect a flame. The venting should also be adequately sealed and you may want it inspected by an expert. A temperature of 32F indicates a thermistor that does not make a good connection, and 199F indicates a direct short. According to Rheem, the error code 10 will pop up when the fan motor fails to create sufficient ventilation. After you see a code on a tankless water heater, a common first step is to reset the device. Thankfully, Rheems water heaters provide an error code when something goes wrong. Rheem Tankless Water Heater Code E5 [Reasons + Solutions] We recommend you check for a broken wire or poor electrical connection. Replacing the control board is the only solution to fix this water heater issue. If there is no pulse output, you should replace the fan. That may be the cause but it could also be due to a clogged neutralizer on the condensing unit and you can clean the air inlet screen and the heat exchanger fins. You could increase the flow rate or simply adjust the temperature though if all of these potential solutions fail then there may be a problem with the water flow sensor itself which needs to be replaced. Rheem error code 66 indicates a problem with the water bypass control. On top of this, you must ensure the drain will not allow backflow. 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. Rheem error codes 80 and 81 indicate a gas cut-off or extinction failure. This means that the flow meter is not sending a signal to the computer which starts the machine. And this is how the blower motor looks like: Inspect the blower motor for broken fins or dirt or debris that gets stuck inside it. If there is any damaged wiring, your water heater will be unable to send a signal to the control board. Your water heater may have reached its capacity, which would cause it to turn off unexpectedly in the middle of your shower. Remove and clean any buildups and blockage in the condensate drain system. You can use 100-grit sandpaper to remove the carbon buildup from the flame rods. Rheem tankless water heaters are among the most reliable you can buy, but like any technology, they will eventually encounter issues. Touching any wires while the power is on can cause an electric shock. As always, your best resource is your owners manual since it'll have the specific information you need for your model. Error Code 29 indicates that the temperature is too low on the heat exchanger. If you encounter this, heres what you can do: These are the most common error codes, as well as the most common fixes for said codes. Do note that solving each code will require a comprehensive understanding of the technical details of a tankless water heater. Similarly to error code 51, you may want to check that the terminals on the gas solenoid valve wiring harness are not loose or damaged. Attach the remote control to the tankless unit with a different wire. You could try to inspect the heat exchanger thermistor or flush the unit and remove any build-up of limescale (see also What Is Limescale? ). The Rheem error code 31 can be caused by scale buildup on the inlet water supply filter or any thermistors, damaged or bad wiring, and short circuits. Increase the temperature on the remote if it is set too low. The blower motor and flame rod FL-25 should also be checked. To troubleshoot Rheem error code 61, check the motors wiring condition and the Molex connections at the PCB. There are certain steps you can take which include checking the high and low fire manifold pressures and that the right type of gas is used. 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. If this doesnt work, your next step is to check the gas valve wire connections to ensure they are secure. The content is not intended to be a substitute for professional advice or consultation. Reason: The Control Board is not programmed. A faulty water flow sensor or PCB can also be the reason for your unit not working. Before they arrive, you can check that the gas valves are all open with gas actually reaching the unit properly. Rheem Tankless Water Heater Troubleshooting [Complete Guide] 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. It represents a water protection fault at the indoor unit. Did not see that error code here. You should consult with a licensed professional and check local permit requirements before starting any project. Rheem error code 14 means the overheat film wrap has been activated, usually caused by a hot spot. Why Your Tankless Heater Requires a Reset. It is possible for a Rheem unit not to heat water, though it has a flowing water supply and does not display any error codes. That being said, customers have reported a much higher frequency of certain codes, which well cover here. The repair guide provides info on how to deal with the heating problems. A tankless water heater is a complicated device. Stop the water flow, switch the remote control off, and unplug it. A defective or loose wire connection between the water control and the connector B on the PCB is the main culprit that causes your heater to pop up with this error message. Ensure the condensate flow is free of dirt, debris, and buildups. If your Rheem displays an error code 51, ensure the gas valve wiring is in good working condition and installed correctly. The fan motor should also have the right voltage and may be water damaged due to condensation. Call the technician because the water heater is overheating. Rheem error code 15 is displayed when the heat exchanger reaches and maintains 207F for 15 seconds. If the waters temperature is too high, this should be indicated in the maintenance information. If this sensor is at fault, it will not send a signal to the computer, which starts the tankless unit. Close the hot water taps and remove or turn off the circulation pump, if any installed. Learning the error codes of your Rheem tankless water heater may seem exhaustive yet can prove to save you money. Mainly E5 on a Rheem tankless water heater means a high water flow rate. Performing regular maintenance on your Rheem tankless water heater should prevent error code 1L from occurring. Clogged condensate neutralizer. } Rheem error code 79 means there is a problem with the current of the fan motor. Pipe dope may also cause a blockage inside the water flow control turbine. If yes, clean the heat exchanger. Once you have an error code, take a look at our list to find out what the problem is. Inspecting their condition and cleaning them will typically fix this error code. Rheem Tankless Water Heater Error Code 10, 06. More specifically, it will focus on troubleshooting your Rheem tankless water heater and what to do when you encounter the dreaded error code. If your water heater comes on, we bet the culprit is the remote control itself or the wiring between the remote control and the tankless unit. Then, remove the front access panel. 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. Replace the water control assembly or the PCB if necessary. Error code 93 should show when the unit has shown down and is a further warning to replace the neutralizer. Discover how to replace a faulty hot surface ignitor in your water heater with our comprehensive troubleshooting guide. 3 Common Causes (and How To, Troubleshooting Electrolux Dishwasher Error Codes, 5 Common Problems with Camplux Water Heaters. If your unit displays an error code 11, it is advisable to contact a licensed professional. Some simple issues can result in the water flow being low and you should be able to solve them yourself. This code is known as the continuous combustion fault. Rheem error code 03 is found on units with MIC-180 or EZLink. Hotwatertalk.com is a participant in the Amazon Services LLC Associates Program and other affiliate advertising programs, designed to provide a means for us to earn fees by linking to the affiliated sites. This number indicates the you are dealing with. The gallons per minute (GPM) you and your family need at the same time will help determine the GPM your tankless water heater will need to deliver (e.g. When the ODS gets activated, your tankless water heater will trigger the error code 13. Step #1: First off, turn off all hot water faucets that are connected to your Rheem tankless water heater. The gas control assembly, the main burner, the flame rod electrodes, or the PCB may need to be replaced. First off, turn the unit off at the remote controller or at the circuit breaker. 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. Reason: Insufficient Heat Exchanger Temperature. Our comprehensive Rheem Water Heater Troubleshooting guide will explain common is. Then, locate the two terminals connected with the remote control. Rheem error code 82 means there is a problem with the PCB programming. Error code 05 could be triggered by an issue with the air intake or a blockage leading to the vent exhaust. Follow the same troubleshooting steps and procedures as in error code 51. If they get blocked by dirt, debris, and carbon buildups, this may cause a problem with the combustion. You may not need to contact a qualified specialist to take a look as the error codes can be troubleshot by yourself. Rheem error code IL indicates a possible scale buildup in the heat exchanger. Use the error code guideline below to identify the problem, or. You may also want to ensure that the altitude settings are correct for your location. The neutralizer needs to be replaced soon. If checking that the fan blade is tightly fitted on the motor shaft and spinning freely does not work then you may want to replace the sensor. Rheem Tankless Water Heater displays a lot of error codes due to specific reasons. The unit will throw the error code e51 if the gas inlet solenoid valve is at fault. How to troubleshoot Rinnai water heaters successfully using Rinnai error codes guide. Rotate the thermostat to achieve your desired water outlet temperature. There are a few reasons why the reset button might trip. It will usually be red or black, and may be labeled "reset.". Founded by Hubert Miles, Certified Master Inspector. Compare HSI to other ignition systems. The reset button is there for safety reasons. If you get the voltage reading, take another measurement at connector B between the White#2 and White#8 wires. Cause: The water heater and its burner doesn't get enough gas. The red flashing light on Rheem tankless water heaters means that the heater has reached a lockout status and requires immediate repair. There is an issue with the PGFR (proportional gas flow regulating) valve. Ensure all vents are not blocked and in good working condition. Before you touch or open any electrical components, make sure the power is off. We recommend you read our in-depth guide on Rheem Tankless Water Heater Code 12. You should also check that the fan motor looks to be working properly. If the unit reaches 230F, however, it will again display an error code 15, shut down, but not start automatically on its own. How to use diagnostic system and fix the problems using the error codes that appear on the remote controller. After another 20 seconds, switch the remote control on and the water supply too. E4 on your Rheem tankless water heater indicates an issue with the flow meter sensor. A clogged condensate drain line and incorrect condensate line piping are the common causes to block the drainage system. Replace the PCB or fan if necessary. This error is preventable by descaling the water heater on at least once a year. Years of experience in the HVAC field have taught him many lessons, not the least of which is that the value of quality and knowledge far exceeds any promised initial savings. However, if it doesnt, you should measure the thermistors resistance, and the thermistor or the PCB may need to be replaced. Rheem Tankless Water Heater Error Code P1 - Heaterview The causes of the E5 code appearing on your heater's display include too much water flow, incorrect gas pressure, blocked air intake, clogged exhaust, dirty air filter, lack of airflow in the room . Rheem error code is found on indoor units only and can be caused by a dirty air filter door or improperly installed and seated air filter door or front panel. 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). If the readings are not right, replace the thermistor; if they are within specs, you may have to replace the PCB. Rheem Tankless Water Heater Error Code 29, 11. The specific codes might also differ slightly depending on your specific model of Rheem. 12. The electronic control board will display the current temperature, but the unit is not working at all. If the water doesnt flow, we recommend you increase the flow rate. The water shutoff valve and hot water tap need to be fully open. Though we share resources, information, and educational guide on plumbing & DIY projects, the content here is not a substitute for professional guidance. In a worst case scenario, you may need to replace the control board. Now, you may ask- how can I determine whether the suspect is the remote control or its wiring? Before you try anything else, reset your Rheem water heater. Your Rheem Tankless Water Heater will beep and show an error code if there is a problem with the unit.
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