I am glad to help. 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. However, both codes would only be displayed on a condensing tankless water heater. This is another fault that you may want to check with a professional. Before you touch or open any electrical components, make sure the power is off. Rheem error code 11 can be caused by low gas pressure, faulty or improperly wired gas solenoid valve, and igniter. There are many error codes on a Rheem tankless water heater (see also Rheem Water Heater LeakingWhat To Do?) and their reasons differ vastly. The flame rod wire should be connected and it should be free of any carbon build-up. To fix this issue, you need to slow down the flow rate. Just release blockage from those components to get the ODS thermocouple back in the working condition. A temperature of 32F means the thermistor is not connected correctly, and 199F indicates a direct short. Look here. Inspect the gas valve wiring harnesses for loose or damaged terminals2. Step #2: Now shut off the power supply to your tankless system. All Plumbers are screened, licensed, and insured. Begin with slowing down the flow rate of your water heater. Rheem error code 10 means a false flame has been detected. 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. How do you clear the error code on a Rheem tankless water heater? Before you make a service call, this is a good time to check the thermistor wiring for any damage or the thermistor for a limescale build-up. If the temperature is insufficiently low on the heat exchanger then you should receive error code 29 on your mid-efficiency or condensing unit. When there is any problem with the unit, it will pop up an error code on the display. Replace it if necessary. You should also measure the Molex connections resistance. Then, reset the Rheem tankless water heater again. When the problem occurs, the error code is displayed on the LCD screen of the remote or user interface, so by understanding the meaning of the code, the troubleshooting gets easier. 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. 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. Check the heat exchanger air inlet and perform regular maintenance to flush the unit with scale buildup. Check that the vents are connected properly with no obstructions, the correct materials should have been used for the installation. Rheem Tankless Water Heater Code 76 [How To Fix] - Lil Dutch Uncle Close the hot water taps and remove or turn off the circulation pump, if any installed. 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. You may not need to contact a qualified specialist to take a look as the error codes can be troubleshot by yourself. Finally, unplug the water heater, disconnect the remote control then plug the heater back in and test it without the remote control. We recommend you check the heat exchanger fins first for blockage. And thank you for mentioning your issues. If your unit displays an error code 11, it is advisable to contact a licensed professional. However, if it doesnt, you should measure the thermistors resistance, and the thermistor or the PCB may need to be replaced. Error code 93 should show when the unit has shown down and is a further warning to replace the neutralizer. The most common Rheem codes are found here on Rheems official website (click on the first drop-down FAQ section). If the error code 12 persists, contact a licensed technician. You can compare this code to those on our list to find out what is wrong with your heater. Ensure it touches the flame. If it does, the unit should be good and restarted. The gas pressure to your water heater should range between 1.2- 3.5Kpa. . Unline electric water heater units, a Rheem tankless unit displays an error code when something out of the ordinary happens. Replace the access cover and turn on the breaker. Otherwise, you should replace the water flow sensor. Dont forget to release the blockage if needed. He obtained his Bachelor of Science degree from the University Of Texas at El Paso. Performing regular maintenance can also save you from having to solve any problems from occurring in the first place such as cleaning the filters, the air fan, and the heat exchanger fins. You may also want to ensure that the altitude settings are correct for your location. You will see a number that is flashing on the display, which will be accompanied by a beeping sound. Error code 76 on Rheem Tankless Water Heater is an indication of faulty communication with the remote control. It helps us diagnose and determine the exact problem with the water heater. You could ohm out all the solenoid valves, inspect the flame rods for the correct voltage, or even replace the gas control valve altogether. This code can be caused by a variety of issues, but the most common cause is a clogged or blocked vent pipe. Rheem error code IL indicates a possible scale buildup in the heat exchanger. See how to troubleshoot the flame failure, not enough, no hot water . Rheem Tankless Water Heater Troubleshooting [Complete Guide] These error codes correspond to a particular problem with your boiler, letting you discover what is wrong without the need for extensive troubleshooting. Reason: Too High Outlet Water Temperature. 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. There may also be blockages in the heat exchanger which should be removed. How to troubleshoot Rheem tankless water heaters by using the service error codes chart. Rheem Tankless Water Heater Code E5 [7 Easy Fixes] If you dont get this reading, you should replace the heat exchanger thermistor. Even the largest tankless unit could struggle in a high-demand household (1). Now, you may ask- how can I determine whether the suspect is the remote control or its wiring? 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. 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 . A flame failure is a little different from a failure to ignite and will likely require a specialist to take a look. Eric Alvarez is an HVAC guy based in El Paso, Texas, United States. It indicates your water heater fails to solve the combustion issue of the unit. One common problem with Rheem tankless water heaters is not getting any hot water while showering. We also break down how to clear those error codes from the display. Increase the flow. More specifically, it will focus on troubleshooting your Rheem tankless water heater and what to do when you encounter the dreaded error code. Those error codes dont only help you understand the actual problem with the unit but also make it a breeze to fix them. If there are none, check the exhaust and inlet flue for any blockages. If needed, replace it with a new one. If the fan doesnt move, then ensure it receives enough voltage. Ensure the flame rod wiring is correct and clean. Typical Gallons Per Minute. To restart the heater, turn off the power by switching the switch that controls the power and the switch that controls the heater at the circuit breaker. Rheem error code 34 indicates a problem with the ambient combustion air thermistor. This is a complete guide on Rheem Tankless Water Heater Error Codes. If you observe no remaining flame, dont hesitate to check the relay connection of flame rod connector. To clear this fault, you will need a pump and two hoses. Check your units troubleshooting manual for more model-specific information. Before developing Water Heater Hub, Anthony Barnes was a full-time plumber, and he has undertaken a wide variety of projects over the decades. If the heat exchange fins get clogged, release the blockage. It will alert you that your water heater requires service or that there are damaged or broken components you need to repair or replace. Finally, the heat exchanger should be checked to make sure that the fins, fan, and air intake all appear to be clean. Tankless water heaters generally last considerably longer than tank-type heaters, as they dont hold corrosive water for prolonged periods. You could check the power and if the unit is actually plugged in which is a good idea after a tripped or turned off circuit breaker (see also our guide on how to match wires size with circuit breaker ). Try connecting the remote control to the remote connection directly which is at the bottom of the water heater, though the cable may be the problem and could be replaced. 90% of the time, this troubleshooting step will help to eliminate the warning message from the control panel. window.mc4wp.listeners.push( We broke down everything that will help eliminate the error message from the control panel. Here faulty means either the blower motor itself gets defective or its housing gets clogged with dirt or debris. You can find data about the water flow in the maintenance information. If your Rheem displays an error code 51, ensure the gas valve wiring is in good working condition and installed correctly. To troubleshoot this error code, confirm that the water bypass solenoid has the right voltage going through it. 12. If your water heater is old then you may want to pay more attention to the warning signs that it may be failing. 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. All content found on this website is intended for informational and educational purposes only. If this doesnt work, your next step is to check the gas valve wire connections to ensure they are secure. Performing regular maintenance on your Rheem tankless water heater should prevent error code 1L from occurring. They are dirty or defective flame rods, faulty ODS thermocouples, and incorrect burner manifold pressure. For instance, the exhaust cannot be recirculated back into the units fresh air intake. Legal Disclosure:Lildutchuncle.com provides and shares information on plumbing, heating & air quality, home improvement, and other DIY projects. Rheem error code 29 indicates that the outlet temperature is too low. listeners: [], You might be able to fix the issue by pressing a single button, or you might need to call for professional help. If your Rheem displays an error code 29, ensure the heat exchanger is clean of any buildups. 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. Solution: If your tankless water heater is using natural gas, make sure that there is no interruption in gas supply from the distributor. During winter & freezing days, we recommend you insulate the drainpipe by using a heat tape. If it does, you should check if the pulse output is from it. Try resetting the device, and if that doesnt fix the issue, its best to have a professional address the situation. Attach the remote control to the tankless unit with a different wire. When the ODS gets activated, your tankless water heater will trigger the error code 13. The reset button can be found on most Rheem water heaters either immediately on top of the limit switch, which is positioned next to the thermostat, or it can be found nearby. 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. Though we share resources, information, and educational guide on plumbing & DIY projects, the content here is not a substitute for professional guidance. Inspecting their condition and cleaning them will typically fix this error code. 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. See our list of the best electric tankless water heaters. Reset the unit using the Min/Max switches on the PCB. Ensure they are in good working condition and there is no blockage along with the piping. Rheem offers several water heating solutions, and this article will focus on its line of tankless water heaters. If that does not work then you could confirm that the tankless unit is correctly grounded. Now, you may ask- how can I understand whether the solenoid valves function correctly or not? Of course, the internet is likely your go-to resource for any current information relating to your Rheem tankless water heater. Solution: You must descale the water heater. For the air intake, remove then clean the air inlet filter and clean both the heat exchanger fins and the combustion air fan. Error code 65 may necessitate calling out a specialist yet you can check for a fault yourself. Error code 92 is displayed during operation, and when the unit is switched off, error code 93 is shown. If you want specific instructions, consult the owners manual. If they get blocked by dirt, debris, and carbon buildups, this may cause a problem with the combustion. Your tankless water heater will display this wrong message if the venting system fails or doesnt work properly.