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. Rheem error code 32 can be caused by scale buildup on the inlet water filter or other thermistors, damaged or bad wiring, and short circuits. Rheem error code 05 can be caused by blocked air ventilation and exhaust flue systems. If not, the problem could be caused by the blower motor and the PCB. However, there is also another meaning of the error code 29. To troubleshoot the Rheem error code 10, check the air intake condition, exhaust flue inlet, heat exchanger, fan blade, and fins. If you dont know how to detect the source of the problem, you can read this 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. However, even the best tankless water heaters sooner or later may stop working or be affected by other Rheem error codes 92 and 93 indicate that the neutralizer is due for a replacement. Of course, dont hesitate to replace the blower motor if it gets broken. If your Rheem displays error code 38, light the burner for a few minutes and measure the sensors current readings. Make sure to check all four sensors. Replace the PCB if the error code 82 persists. 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. Before doing so, remember to remove the Molex from the CB. I'm a licensed Home Inspector, Certified Professional Inspector (CPI), Certified Master Inspector (CMI), and FHA 203k Consultant. As mentioned above, there are several more error codes you can potentially encounter with a Rheem tankless water heater. The Rheem tankless water heater code means that incomplete combustion is taking place in your heater or it may be that the water flow is too high. This is largely because the Rheem tankless water heater is not specially designed for continuous running along with a circulation system. There may also be blockages in the heat exchanger which should be removed. It means the desired water volume is too high that exceeds your desired preset temperature. event : evt, After that, you should replace the front panel and then restart the heater. It will usually be red or black, and may be labeled "reset.". 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 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. Ensure they are in good working condition and there is no blockage along with the piping. 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. You may even want to take out the flame to check it and clean it with some steel wool. How to use diagnostic system and fix the problems using the error codes that appear on the remote controller. These steps will get fix the fault and restore your water heater back to working condition. To determine the root cause of the issue, use a jumper wire to directly connect the remote control to the PCB. 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. All rights reservedDisclaimer:The content published on hotwatertalk.com is not professional advice. Check for an operational igniter and for any damage to the igniter wiring harness. In this case, there are a few things that you need to check. 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. Tankless models need routine maintenance to ensure they remain energy efficient. You can find a full list of error codes here. Your email address will not be published. There should also be gas to the unit with the valves fully turned on and the unit itself should have the correct gas volume and pressure which can be checked by a specialist. This particular error code could also be triggered due to the wrong altitude setting if you reside in a high-altitude environment. I am glad to help. If the resistance is not according to specifications, it should be replaced. Begin with slowing down the flow rate of your water heater. From the bottom of the unit, take out two screws that hold the computer bracket in place. Try resetting the device, and if that doesnt fix the issue, its best to have a professional address the situation. Get DIY installation tips and troubleshoot common problems. You may need to replace the thermistor or the PCB. Rheem Manufacturing ranks as the global leader in the manufacture of high-quality, sustainable, and innovative water heaters, tankless water heaters, air conditioners, furnaces, pool heaters, and HVAC systems for residential and commercial applications, and is a full member of AHRI, the Air-Conditioning, Heating, & Refrigeration Institute. Then, inspect the heat exchanger flapper valve and make it move freely at the vent connection of your water heater. If you get the voltage reading, take another measurement at connector B between the White#2 and White#8 wires. For two showers and a load of laundry, you'll need a water heater that's rated to deliver at least 5.5 GPM for your area (2.0+2.0+1.5=5.5)). You should also check that the fan motor looks to be working properly. The error code 61 popping up on the LED display represents a faulty blower motor. This number indicates the you are dealing with. Read Details: Rheem Tankless Water Heater Code 29. We earn a commission if you purchase at no additional cost to you. Call the technician because the water heater is overheating. Your Rheem Water Heater will pop up this warning message due to the following reasons: Addressing and fixing those issues we mentioned will help you eliminate the error code from the display of the unit. Tankless water heater problems and how to repair models from Noritz, Rinnai, Takagi using error codes. A clogged air inlet filter, dirty heat exchanger fins, and bad heat exchanger thermistor are some culprits behind this issue. Check if the maintenance information displays the heat exchangers temperature. There could also be loose or damaged connections on the wiring harness for the gas control valve which could set off error code 71. Follow the same troubleshooting steps and procedures as in error code 51. 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. Run the unit and check if the error code persists. ); If it doesnt erase the error message, fix the issues that cause the heater to pop up the error code. Then, reset the Rheem tankless water heater again. This may be that the water control valve has the incorrect voltage or that there are loose/damaged connections on the water control valves wiring harness. The flame rod wire should be connected and it should be free of any carbon build-up. If the water doesnt flow, we recommend you increase the flow rate. The Rheem error code 14 can be caused by using the wrong type of gas, blocked or obstructed airflow, vent terminals and exhaust vents, and faulty or a damaged heat exchanger. Rheem Tankless Water Heater Code 11: The Reasons & Solutions 01. 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. Knowing what each error code means can save you from having to make a service call and can give you peace of mind about how serious, or not so serious, the problem is. If there is enough current running, you may need to replace the burner assembly; otherwise, replace the PCB. There is an issue with the inlet thermistor. Solution: If you cannot find the problem in the venting system, and cannot remove what is blocking the regular operation, call the service. After 10 seconds, plug it back in. You could also check the outlet thermistor, heat exchanger thermistor, and the gas valve are all in good working order. Igniter Gets Defective How To Change A Gas Valve On A Rheem Tankless Water Heater How To Clean The Igniter On Rheem Tankless Water Heater How To Reset Rheem Tankless Water Heater Though we share resources, information, and educational guide on plumbing & DIY projects, the content here is not a substitute for professional guidance. Next, you need to remove some wires that come in the way like the blower motor wire, flame rod wire connectors, over wrap film plug, and others. Error Code 11indicates an ignition failure. Unfortunately, many things can cause an ignition failure. Once you have an error code, take a look at our list to find out what the problem is. Rotate the thermostat to achieve your desired water outlet temperature. Just turn off the water supply valve to slow down the flow. Follow An E4 error code on your 45 model tankless water heater, indicates that there is an issue involving the flow meter sensor (also referred to as cold water temperature sensor.) Water flow is too low, or the shutoff valve is not fully open. I have just updated this article as per your request. It will be better if you install the heat tape close to the exit to the main drain to get the best output. Now, plug the water heater into an electric outlet and turn on a hot water source. Remember that depending on your altitude, or for every 3,280 feet, a different programming chip is used, and indoor and outdoor models use different chips. 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. If fault re-occurs book service call. The venting should also be adequately sealed and you may want it inspected by an expert. When an error code is displayed on the screen and before you call the service support, do the following to reset the system, which might fix the issue: If nothing happens after resetting the unit and the error code is still visible, do the following: Cause: Limescale deposits in the heat exchanger water flow is reduced, and the temperature increases significantly. window.mc4wp.listeners.push( The thermistor should also be free of any limescale build-up and may require a clean. We broke down everything that will help eliminate the error message from the control panel. You may need to replace the thermistor or the PCB. To fix this error, replace the neutralizer. 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 can also refer to your models user manual. Therefore, our top advice is that you contact a professional plumber when you see an error code. The electronic control board will display the current temperature, but the unit is not working at all. Tankless Electric Water Heaters. Unless you have an in-depth knowledge of water heaters, youre best to not risk making the situation worse. See our list of the best electric tankless water heaters. Remember, Rheem tankless models need routine maintenance to remain energy efficient. Peter has been a homeowner for 35+ years and has always done his own repair and improvement tasks. Your water heater will flash this error message on the control panel due to: Firstly, determine whether there is a problem with the remote control wiring or the remote control itself. Ensure there are no loose connections. In some cases, the error comes up when the water heater has a water flow rate that's too high. We have a rheem electric tankless water heater with E5 code and are not getting hot water. Afterward, remove every speck of dirt, debris, and buildup from the air intake filter. Insert a flat-head screwdriver through the thermostat dial. You may need to flush the system using distilled white vinegar though do be careful as the water would naturally be hot. Error code 93 should show when the unit has shown down and is a further warning to replace the neutralizer. Flame failure during operation. Rheem water heater error codes are short and simple. But like any other piece of technology, they develop faults. Defective Gas Solenoid Valves 03. NOTE: Because these are potentially hazardous areas, dont attempt to fix a Code 11 unless you are a professional. 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. Water flow is below the minimum required. Rheem error codes 92 and 93 are typically found on condensing units. Inspect the gas valve wiring harnesses for loose or damaged terminals2. 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. Touching any wires while the power is on can cause an electric shock. There could be another issue with the heating elements. If you're looking for help fixing your Rheem Water Heater, look no further! Also, check that the vent terminal was installed properly on the device. })(); Anthony Barnes is the founder of Water Heater Hub and a second-generation plumber by profession. Replacing the control board is the only solution to fix this water heater issue. In plain words, the water heater error code 13 stands for a defective combustion system. Rheem is a trusted American appliance brand that is close to 100 years old. When this error code will pop up, understand there is no ignition on your tankless water heater. Rheem error code 65 means there is a problem with the water volume control. Rheem error code 34 indicates a problem with the ambient combustion air thermistor. In general, here are some additional things to check in order as you evaluate the issue with your unit. Rheem Tankless Water Heater Error Code 10, 06. How to troubleshoot Rinnai water heaters successfully using Rinnai error codes guide. (function() { Rheem error code 38 indicates a problem with the oxygen depletion sensor. Your tankless water heater will display this wrong message if the venting system fails or doesnt work properly. 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. If you do not feel comfortable performing this yourself then you can contact a professional to do it for you. Ensure no unit parts are blocked, clogged, or obstructed by debris, foreign objects, or dirt and scale build-ups. Rheem error code 52 can be caused by loose or damaged wiring or terminals. Ensure it touches the flame. Before finding out the source of the problem, we recommend you pull out the remote control wiring from the wiring terminal on the PCB. Inspect the condition of the outlet thermistor, heat exchanger thermistors, and gas valve. To resolve this false flame issue, start by resetting the unit. If your unit displays an error code 11, it is advisable to contact a licensed professional. Lastly, ensure the igniter wire harness is intact. If this sensor is at fault, it will not send a signal to the computer, which starts the tankless unit. Rheem error code 66 indicates a problem with the water bypass control. And thank you for mentioning your issues. If all seems good, the problem may be a faulty PCB. Has your Rheem tankless water heater suddenly stopped working? First off, make sure there is enough fuel in your gas tank. 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 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. Of course, the internet is likely your go-to resource for any current information relating to your Rheem tankless water heater. Why Your Tankless Heater Requires a Reset. A temperature of 32F means the thermistor is not connected correctly, and 199F indicates a direct short. Lastly, check the fan motor for proper operation. Rheem error code 52 indicates an issue with the proportional gas flow regulator valve (PGFR). If there are air flow restrictions surrounding the unit or obstructions at the vent terminal then this could also result in an error code 34. How do you clear the error code on a Rheem tankless water heater? You can also try shutting off the water and then disconnect the remote control. When I can see a flame but the code displayed is Code 10, the problem is that the flame sensor is malfunctioning. Use the error code guideline below to identify the problem, or. Follow the descaling procedure to remove the scale build-up in the heat exchanger (there should be an error code). Ensure all vents are not blocked and in good working condition. That being said, customers have reported a much higher frequency of certain codes, which well cover here. To troubleshoot Rheem error code 24, switch off the unit and check if it works with the disconnected remote control. Stop the water flow, switch the remote control off, and unplug it. Once your have your parts together, here are the steps to descale the water heater. Rheem Electric Tankless Water Heater Error Code E5, 05. Find the most common problems and see how to fix issues. Troubleshooting John Wood tankless water heaters. If there is no pulse output, you should replace the fan. 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. Cause: The gas shutoff valve is not open completely. Before you touch or open any electrical components, make sure the power is off. We also broke down what you should do if the capacitor gets faulty. Close the hot water tap and turn OFF the remote. Make sure that the fan motor is operating properly. If they are then you may want to contact a specialist to take a look. Ensure all parts are in good working condition, clean, and not blocked by a foreign object. Am I right? Rheem tankless water heaters provide water on demand. 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. This is a complete guide on Rheem Tankless Water Heater Error Codes. Over heating. If you observe no remaining flame, dont hesitate to check the relay connection of flame rod connector. This code indicates that the unit is in standby mode and is not providing hot water. If you meet the gas supply and installation requirements, check the following: If there are no issues with the wiring and readings are normal: If you find that your tankless heater often requires a reset, it might be that its overloaded. Cycle your water heater two times by turning off- then turn on- at 10 seconds intervals. If the unit starts, the problem is either with the remote control or wiring. The gas pressure to your water heater should range between 1.2- 3.5Kpa. Enjoy the comfort and convenience of continuous hot water on demand with a Rheem tankless water heater. 12. See how to troubleshoot the flame failure, not enough, no hot water . ABSTRACT: Rheem Residential Electric Water heaters are dual rated for 240 and 208 Volts AC single phase operation. Rheem error code 79 can be caused by condensation or moisture accumulation over the fan motor or damaged or loose wiring. However, with so many different error codes, you might have no idea what each code means. Then, inspect the heat exchanger fins for a clog and release the buildup. You can also check that the ohms are correct though your sensor may need to be replaced. Ensure the unit is properly grounded and its wiring is in good condition. 3. When the ODS gets activated, your tankless water heater will trigger the error code 13. Here is a list of common error codes for Rheem tankless residential water heaters. If your Rheem tankless water heater has been running continuously for over an hour you should look to reset the system. Reason: Continuous combustion lasting an entire hour. Also, dont forget to check the breather box for debris and use a vacuum cleaner or a lightly damp rag to clean the box. Another fault could occur with your ambient thermistor which is the combustion air temperature sensor. The most common Rheem codes are found here on Rheems official website (click on the first drop-down FAQ section). Error code 76 on Rheem Tankless Water Heater is an indication of faulty communication with the remote control. The heater might also make a noise to alert you to any issues. If there are none, check the exhaust and inlet flue for any blockages. 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. Just like error code 65, you should also inspect the tankless water heater for any loose or damaged connections on the wiring harness of the water bypass valve. A Clogged Neutralizer Is Causing Rheem Tankless Code 29. If you exceed the limit, the water will no longer be heated. Reason: Air Intake Filter Switch Malfunction. The neutralizer may need to be replaced and if it does then error codes 92 and 93 may be set off. Founded by Hubert Miles, Certified Master Inspector. You may need to ensure that the inlet valve is completely open and there are no obstructions to the cold water inlet pipe. Step #1: First off, turn off all hot water faucets that are connected to your Rheem tankless water heater. The unit should work correctly if the water temperature is displayed in the maintenance information. Sometimes this issue can be fixed by simply restarting the unit. The fan motor should also have the right voltage and may be water damaged due to condensation. Ensure its installed correctly and measure its resistance. For a condensing unit, confirm that the drain line is not blocked, and the shipping cap is removed. Rheem tankless water heater starts malfunctioning over time. Even the largest tankless unit could struggle in a high-demand household (1). Dont forget to release the blockage if needed. When this process is completed, your water will be murky, because of the limescale that has been removed. Finally, unplug the water heater, disconnect the remote control then plug the heater back in and test it without the remote control. Pipe dope may also cause a blockage inside the water flow control turbine. First off, turn the unit off at the remote controller or at the circuit breaker. 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? To troubleshoot Rheem error code 61, check the motors wiring condition and the Molex connections at the PCB. You should follow the same troubleshooting steps as in error code 51. } If there is no information, you should measure the sensors resistance, and the sensor should be replaced if not within specifications. Once you repair the damaged wiring, run the hot water tap to see whether the unit works or not. Rheem error code 03 is found on units with MIC-180 or EZLink. Rheem Tankless Water Heater Error Code 12, 10. If the readings are not within specifications, you may be dealing with a faulty thermistor, which you should replace. By displaying a code on your tankless heater, you, or a professional, can read the code to understand what went wrong and how to fix it. There may also be loose or damaged connections attributed to the motor wiring harness that could be the true cause of the error code. Appliance. If the temperature is not within specifications, replace the thermistor, and if it is, you may have to replace the PCB. Call the technician. If the code persists, call a licensed contractor. You could ohm out all the solenoid valves, inspect the flame rods for the correct voltage, or even replace the gas control valve altogether.
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