If your Rheem tankless water heater displays an error code P1, the minimum water flow rate is insufficient for the main burner ignition. There are a few reasons why the reset button might trip. 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. Rheem error code P1 means the water flow rates have fallen below 0.66 GPM for more than 5 seconds. Worked yesterday. If there is enough current running, you may need to replace the burner assembly; otherwise, replace the PCB. An error code 90 typically indicates that there are blockages in the heat exchanger or blower motor. 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. window.mc4wp = window.mc4wp || { 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. The heat exchanger may also be suffering from separations or cracks. However, if the resistance seems good, the PCB may need to be replaced. We created this website in order to help our visitors to find proper information about HVAC troubleshooting, repair and most frequent questions about it. You can also check that the ohms are correct though your sensor may need to be replaced. But this task requires a lot of elbow grease. Check the air intake and exhaust venting. So, keep reading. A clogged heat exchanger, venting system, and air intake filter are responsible for making the ODS thermocouple defective. 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. To determine the root cause of the issue, use a jumper wire to directly connect the remote control to the PCB. What does E4 mean on a Rheem tankless water heater? Rheem Electric Tankless Water Heater Error Code E4, 04. To resolve this false flame issue, start by resetting the unit. As an Amazon Associate, I earn from qualifying purchases. Replace the access cover and turn on the breaker. 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. While troubleshooting your Rheem, do not operate it or open the hot water tap, especially while testing it using the Min and Max buttons. 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. Water flow is below the minimum required. If the water pressure is low, the water heater is making strange noises, and keeps on coming up with a variety of error codes then it may be time to replace it. Unless you have an in-depth knowledge of water heaters, youre best to not risk making the situation worse. Contractor or business name who did the installation and service. Your email address will not be published. It will usually be red or black, and may be labeled "reset.". You should also check that the fan motor looks to be working properly. On the other hand, if you want to save money, check out this video to learn how to clean the inlet filter. 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 gas pressure; it might be too low, or the gas valve is not fully open. To check the remote control, unplug your water heater from electricity and pull out its cover. Again, inspect the thermistor wiring for any damage and this is an ideal time to check then clean the ambient thermistor itself and perform a check for the correct number of ohms. Often, understanding how to rectify each error code requires an understanding of how the device works as a whole and how each part works together. Error Code 13 indicates Flame rod: poor or improper combustion. Heres what you should do: Related:Rheem Error 13 Ultimate Troubleshooting Guide. 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. Replace the water control assembly or the PCB if necessary. To reset the water heater, turn off the hot tap water and the unit itself. There are over 30 codes possible on Rheem devices. You may need to replace the heat exchanger thermistor or PCB. Enjoy the comfort and convenience of continuous hot water on demand with a Rheem tankless water heater. If your unit displays an error code 11, it is advisable to contact a licensed professional. Once you clean or change the blower motor, follow the steps in reverse to reinstall the blower motor. As mentioned above, there are several more error codes you can potentially encounter with a Rheem tankless water heater. Locate the thermostat dial. Clogged condensate neutralizer. See whether its correctly installed and whether its functioning properly. 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. Join our exclusive 2,500+ email list to get tailored advice, product roundups, and be the first to see our new content. You should also measure the Molex connections resistance. If your Rheem displays error code 38, light the burner for a few minutes and measure the sensors current readings. If the remote control works, we bet the wiring is at fault. 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. In other words, youll need a very in-depth knowledge of these devices to understand each error code and an even more in-depth knowledge to solve it. There is an issue with the inlet thermistor. Founded by Hubert Miles, Certified Master Inspector. In general, here are some additional things to check in order as you evaluate the issue with your unit. Every electric water heater has a reset button, and with good reason. Disconnect the remote control, switch the unit on, and open a hot water tap to start it. 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. In the troubleshooting manual, Rheem says that error code 29 stands for too low heat exchanger outlet temperature. } We don't tend to provide any plumbing advice or any advice that should come from a certified professional. Ignition failure at start up. If you need to reset the code on your Rheem tankless water heater, follow these steps: 1. After cleaning the inlet filter, run the hot water only in the tap to check. Call the technician. Mainly E5 on a Rheem tankless water heater means a high water flow rate. If its empty, dont forget to fill it with gas. Before finding out the source of the problem, we recommend you pull out the remote control wiring from the wiring terminal on the PCB. Also, this warning message indicates that the unit has detected a false flame. When this process is completed, your water will be murky, because of the limescale that has been removed. According to Rheem, the error code 10 will pop up when the fan motor fails to create sufficient ventilation. However, with so many different error codes, you might have no idea what each code means. Your water heater may have reached its capacity, which would cause it to turn off unexpectedly in the middle of your shower. Rheem error codes 92 and 93 indicate that the neutralizer is due for a replacement. Why is my Rheem tankless water heater beeping? Rheem Tankless Water Heater Error Code 29, 11. Increase the temperature on the remote if it is set too low. The flow meter sensor is also referred to as a water temperature sensor. Rheem tankless water heater starts malfunctioning over time. Lastly, check the fan motor for proper operation. Remove any blockage you see. This code indicates that the unit is in standby mode and is not providing hot water. Rheem error code 72 means the flame probes are detecting flames. If the readings are okay, you may be dealing with a faulty PCB. If your Rheem displays an error code 51, ensure the gas valve wiring is in good working condition and installed correctly. What Is The Most Common Problem Associated With A Water Heater? To troubleshoot the Rheem error code 10, check the air intake condition, exhaust flue inlet, heat exchanger, fan blade, and fins. Rheem error code 10 means a false flame has been detected. That being said, here are the most common codes and some potential fixes for each: Code 00 indicates that the water heater has been running without stopping for an hour. How to troubleshoot Rinnai water heaters successfully using Rinnai error codes guide. Now, plug the water heater into an electric outlet and turn on a hot water source. Rheem error code 76 indicates a failure in communication with the remote control. forms: { Rheem error code 82 means there is a problem with the PCB programming. If the readings are not within specifications, you may be dealing with a faulty thermistor, which you should replace. } This error is preventable by descaling the water heater on at least once a year. The connection to the thermistor is incorrect. When I can see a flame but the code displayed is Code 10, the problem is that the flame sensor is malfunctioning. A temperature of 32F means the thermistor is not connected correctly, and 199F indicates a direct short. Checking the main burner and cleaning it will also worth it. Rheem error code 79 means there is a problem with the current of the fan motor. Your email address will not be published. Why Your Tankless Heater Requires a Reset. These steps will get fix the fault and restore your water heater back to working condition. Where You Can Find Current Information For Your Rheem Tankless Water Heater. However, if it isnt, check the resistance readings of the heat exchanger. The above list of Rheem tankless error codes might help you troubleshoot the problem successfully, but if you cannot solve it, you cannot find the code here, or it is hard to fix the unit, I would recommend calling a professional. Below, we will show you how to fix those issues to clear away the error message. The heater might also make a noise to alert you to any issues. Replacing the control board is the only solution to fix this water heater issue. Ensure you eliminate every obstruction from the vent termination of the building and the flapper valve. A flame failure is a little different from a failure to ignite and will likely require a specialist to take a look. More specifically, it will focus on troubleshooting your Rheem tankless water heater and what to do when you encounter the dreaded error code. In a worst case scenario, you may need to replace the control board. 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. See if there is anything blocking the air vent on the device. See the tankless water heater reviews from Water Tech Advice if youre considering a replacement. Find the most common problems and see how to fix issues. Also, make sure the gas flow valves are open and they dont get clogged with dirt or residue buildups. 7 Awesome Tips For Sewer And Drainage Line Cleaning, how to match wires size with circuit breaker, Hybrid Water Heaters: Everything You Need to Know. See if the air inlet screen is dirty and clean as necessary. Reason: Too High Outlet Water Temperature. Whichever issue it is, your unit will likely still be operating and you can solve the error yourself. Rheem error code 71 means a problem with the gas inlet solenoid valve. Comprehensive step-by-step guide: How to install a hybrid water heater with essential tips and expert guidance for a successful installation. Disconnect the vent structure from the unit. If the water doesnt flow, we recommend you increase the flow rate. Rheem offers several water heating solutions, and this article will focus on its line of tankless water heaters. Typical Gallons Per Minute. 1318 - Rheem and Ruud Heat Pump dB Level 1318 Technical Bulletin If you have a Rheem tankless water heater, you may have noticed a code 11 on the display. The alarm sounds every 60 seconds when the tap is open. There could also be a problem with the outlet thermistor which is the outgoing water temperature sensor. If there is no pulse output, you should replace the fan.
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