If it doesnt erase the error message, fix the issues that cause the heater to pop up the error code. As always, your best resource is your owners manual since it'll have the specific information you need for your model. One common problem with Rheem tankless water heaters is not getting any hot water while showering. If the error code persists, contact a licensed technician. We will assume that the licensed plumber/installer professionally installed your Rheem tankless water heater. 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. A false flame being detected may also necessitate a service call, yet there are certain steps to take first. Tankless models need routine maintenance to ensure they remain energy efficient. 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. It will be better if you install the heat tape close to the exit to the main drain to get the best output. If it does, the unit should be working properly and restarting. If there is no information, check the inlet thermistors resistance readings and replace the thermistor if they are not good. If it does, the unit should be good and restarted. 90% of the time, this troubleshooting step will help to eliminate the warning message from the control panel. Rheem error code 33 can occur if scale buildup is on the inlet valve water filter or other thermistors, damaged or bad wiring, and short circuits. If the temperature is not within specifications, replace the thermistor, and if it is, you may have to replace the PCB. 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. Again, there should be no obstructions to the airflow and the vent terminal should be clear. 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. Enjoy the comfort and convenience of continuous hot water on demand with a Rheem tankless water heater. Therefore, our top advice is that you contact a professional plumber when you see an error code. 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. See our list of the best electric tankless water heaters. This error can be checked via two methods; checking that the front panel is installed properly and that the air filter door looks to be sealed correctly. E4 on your Rheem tankless water heater indicates an issue with the flow meter sensor. If the error code 12 persists, contact a licensed technician. If there is any damaged wiring, your water heater will be unable to send a signal to the control board. You can also try shutting off the water and then disconnect the remote control. Water can corrode your water heater and result in tiny fractures or cracks that will inevitably lead to a leak. Remove any blockage you see. See whether its correctly installed and whether its functioning properly. Rheem Tankless Water Heater displays a lot of error codes due to specific reasons. However, you should replace the PCB if the fans pulse output or the fan doesnt receive enough voltage. Then, inspect the heat exchanger fins for a clog and release the buildup. Also, dont forget to check the breather box for debris and use a vacuum cleaner or a lightly damp rag to clean the box. Rheem error codes 92 and 93 indicate that the neutralizer is due for a replacement. If your Rheem displays an error code 12, ensure all gas valves are open and adequate gas pressure. Once you clean or change the blower motor, follow the steps in reverse to reinstall the blower motor. Every electric water heater has a reset button, and with good reason. This is a complete guide on Rheem Tankless Water Heater Error Codes. If the code persists, call a licensed contractor. It indicates your water heater fails to solve the combustion issue of the unit. You can find more information in the user manual. When you shop through links on our site, we may earn an affiliate commission. Besides, we will also depict those reasons that trigger the error messages and provide the solutions as well. Knowing that the ignition has failed is straightforward enough yet finding out why can prove difficult. Code 1L indicates that there is a limescale build-up in the unit. Each tankless water heater has a unique flow rate that it operates. 3. For every 5 gallons, there should be 2 gallons and 3 gallons of water, Put you pump into the bucket and run it for 30-45 minutes, Make sure that power is turned on to the unit and circuit breaker is powered on, Make sure that the safety device on your unit is not activated resulting in the water heater not operating, Sometimes errors are caused as a result of communication fault instead of any particular issue with a component on the unit. Close the hot water taps and remove or turn off the circulation pump, if any installed. Replace the access cover and turn on the breaker. Start with inspecting the remote control. Error code 61 should mean that you should check the fan motor, specifically that it turns freely as even a small restriction could be the problem. If needed, clean the inside of this motor. Here is a list of common error codes for Rheem tankless residential water heaters. Nonetheless, freezing weather can also block up the neutralizer drainage system. You should follow the same troubleshooting steps as in error code 51. Leave the unit for 2o minutes. A tankless water heater is a complicated device. After that, you should replace the front panel and then restart the heater. When the ODS gets activated, your tankless water heater will trigger the error code 13. If you dont get the appropriate voltage reading (8 to 16 VDC), you should replace the water control assembly. 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? ). Rheem error code 13 indicates a problem with the flame rod, typically accompanied by poor or improper combustion and found on indoor units. You should also measure the Molex connections resistance. Also, check that the vent terminal was installed properly on the device. Eric Alvarez is an HVAC guy based in El Paso, Texas, United States. First, check the exhaust and venting flue for any blockages. Watch the following tutorial to learn how to replace the water flow sensor. Afterward, remove every speck of dirt, debris, and buildup from the air intake filter. It means the desired water volume is too high that exceeds your desired preset temperature. If the error code disappears, then the problem is within the venting. Rheem offers several water heating solutions, and this article will focus on its line of tankless water heaters. Pipe dope may also cause a blockage inside the water flow control turbine. The burner assembly fires up only when you open the hot water tap. I'm a licensed Home Inspector, Certified Professional Inspector (CPI), Certified Master Inspector (CMI), and FHA 203k Consultant. Rheem error code 21 means the air intake filter is not working correctly. You may need to replace the heat exchanger thermistor or the PCB. 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. 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. See how to troubleshoot the flame failure, not enough, no hot water . Of course, the internet is likely your go-to resource for any current information relating to your Rheem tankless water heater. 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. If your Rheem displays an error code 66, confirm the unit receives enough water and all wiring connections are in good working condition and tight. Rheem error code 03 means there is a problem with the manifold control. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); How to Reset Rheem Tankless Water Heaters, How Do You Troubleshoot a Rheem Electric Water Heater Rheem Error Codes, 5 Common Paloma Tankless Water Heater Error Codes, Common Electrolux Dryer Codes (E64, E65, E66, EF1, E91), F5E1 Maytag Washer Error Code? Ensure there are no loose connections. It can also mean a bad combustion alarm, a high water flow rate, a motor problem in the water heater or the voltage of the power supply is very low, and a pilot or main burner valve problem. Check the number 11 where I break down the error code 61. After 10 seconds, plug it back in. One for the hot side and another for the cold side. Rheem error code 10 means a false flame has been detected. However, there is also another meaning of the error code 29. there's a good chance that a change or two have taken place. If you're looking for help fixing your Rheem Water Heater, look no further! } Remove the access panel from the front of the unit. Join our exclusive 2,500+ email list to get tailored advice, product roundups, and be the first to see our new content. If needed, replace it with a new one. To erase the error code 13, start with cleaning the dirty flame rods. Rheem error code IL indicates a possible scale buildup in the heat exchanger. Check the venting on the device for any blockage and clear as necessary. Cookie Duration Description; cookielawinfo-checkbox-analytics: 11 months: This cookie is set by GDPR Cookie Consent plugin. Your water heater may have reached its capacity, which would cause it to turn off unexpectedly in the middle of your shower. If the remote works, the problem is with the cable, and if it doesnt, with the remote control itself. Check the gas pressure; it might be too low, or the gas valve is not fully open. If there is no pulse output, you should replace the fan. Rheem Tankless Water Heater Error Code 12 (This Should FIX it) The Rheem tankless water heater allows you to access instant hot water. Afterward, measure the voltage of the wiring between the water control and the connector B. If yes, clean the heat exchanger. Replace the PCB or the gas inlet solenoid valve if needed. To reset the water heater, turn off the hot tap water and the unit itself. Rheem error code can display when the neutralizer or drain pipe gets clogged. Replace the water control assembly or the PCB if necessary. 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. 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. The heater might also make a noise to alert you to any issues. Its recommended that you refrain from using the water heater until the issue with the blinking lights has been resolved. Secondly, inspect the exhaust vent or air intake pipe for a clog. Check if the maintenance information displays the heat exchangers temperature. WaterHeater HUB 2021 - All Rights Reserved. If the readings are looking good, the PCB may be at fault. The fan motor should also have the right voltage and may be water damaged due to condensation. Cause: The water heater and its burner doesn't get enough gas. Read Details: Rheem Tankless Water Heater Code 29. As soon as you spot an error code on your Rheem tankless water heater you may begin to panic as to what it means. 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 they get blocked by dirt, debris, and carbon buildups, this may cause a problem with the combustion. If the water doesnt flow, we recommend you increase the flow rate. Rheem error code 29 indicates that the outlet temperature is too low. E5 on a Rheem Tankless Water Heater means there is a high flow rate. These include: Fortunately, re-lighting your Rheem tankless water heater is easy. The repair guide provides info on how to deal with the heating problems. We broke down everything that will help eliminate the error message from the control panel. During troubleshooting the error code 31, check the water temperature according to the maintenance information isa temperature of 32F indicates a thermistor that is not making a good connection, and 199F indicates a direct short. Rheem error code 72 means the flame probes are detecting flames. If you need to reset the code on your Rheem tankless water heater, follow these steps: 1. If your water heater is old then you may want to pay more attention to the warning signs that it may be failing. 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). You can also check that the ohms are correct though your sensor may need to be replaced. The error code c7 stands for a defective communication between the remote control and the tankless unit. Another problem that might occur when the water flow is reduced is the excessive temperature of the heat exchanger. Error code 79 should indicate that there is a problem with the current heading to the blower motor and you may want to do a service call. Reading through Rheemserror code guide, youll notice the description for each error code is quite specific. Whichever issue it is, your unit will likely still be operating and you can solve the error yourself. However, these quick fixes will notalways fix your problem. A defective flow meter sensor, broken wire, and poor connection are the culprits that trigger the error code E4. There are over 30 codes possible on Rheem devices. In this article, we will look at the main Rheem error codes, what they mean, and how you can address them. Check the vertical and horizontal vent lengths and ensure they meet the standards for safe operation. I started HomeInspectionInsider.com to help people better understand the home inspection process and answer questions about homeownership and home maintenance. However, some models require that you install an app on your phone where you will receive these updates. Rheem tankless water heater starts malfunctioning over time. A temperature of 32F indicates a thermistor that does not make a good connection, and 199F indicates a direct short. forms: { The neutralizer needs to be replaced soon. If its empty, dont forget to fill it with gas. If it does, you should check if the pulse output is from it. You can use 100-grit sandpaper to remove the carbon buildup from the flame rods. After another 20 seconds, switch the remote control on and the water supply too. Begin with cleaning the air inlet filter. Typical Gallons Per Minute. However, the error code helps you troubleshoot the problem when scale buildup or malfunctions occur. Call the technician. Error codes are never a pleasant site, but theyre designed to make your life easier. Our comprehensive Rheem Water Heater Troubleshooting guide will explain common is. . Get DIY installation tips and troubleshoot common problems. Rheem error code 11 indicates that the ignition has failed. If your Rheem displays error code 99, ensure nothing blocks or obstructs the heat exchanger fins, exchanger flapper valves, vent termination, and clean air intake filter. The gas pressure to your water heater should range between 1.2- 3.5Kpa. ); 12. When this process is completed, your water will be murky, because of the limescale that has been removed. If this doesnt work, your next step is to check the gas valve wire connections to ensure they are secure. If you are confident that youre not overworking your unit, consult a professional. Besides, faulty water control assembly is another reason responsible for flashing the error code 65. Discover how to replace a faulty hot surface ignitor in your water heater with our comprehensive troubleshooting guide. Rheem Electric Tankless Water Heater Error Code E4, 04. Rheem error code 65 means there is a problem with the water volume control. Ensure no unit parts are blocked, clogged, or obstructed by debris, foreign objects, or dirt and scale build-ups. The connection to the thermistor is incorrect. 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. You may need to replace the thermistor or the PCB. During winter & freezing days, we recommend you insulate the drainpipe by using a heat tape. Check the air intake and exhaust venting. If your unit displays an error code 11, it is advisable to contact a licensed professional.
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