The PCB may need to be replaced if the sensor is working properly. Rheem Tankless Water Heater Error Code 61, Takagi Water Heater Error Codes [Ultimate Guide], Rheem Tankless Water Heater error code 13, Rheem Tankless Water Heater Troubleshooting Manual [Complete Guide], Basement Watchdog Battery Alarm Add Distilled Water, Basement Watchdog Battery Alarm [Corroded Terminals Or Bad Battery], Basement Watchdog Pump Was Activated Alarm, Loose remote control wiring or the remote control itself gets defective. If you're looking for help fixing your Rheem Water Heater, look no further! I'm a licensed Home Inspector, Certified Professional Inspector (CPI), Certified Master Inspector (CMI), and FHA 203k Consultant. Also, this warning message indicates that the unit has detected a false flame. The most typical problem with a water heater tends to be a water leak which can be common due to how many components come in contact with water. 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. Unless you have an in-depth knowledge of water heaters, youre best to not risk making the situation worse. 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. I have just updated this article as per your request. Error code 14 on tankless water heater means the Overheat Film Wrap sensor has activated. All rights reservedDisclaimer:The content published on hotwatertalk.com is not professional advice. Discover how to replace a faulty hot surface ignitor in your water heater with our comprehensive troubleshooting guide. Also, check that the vent terminal was installed properly on the device. . Turn off you recirculation pump if your unit is connected to one. See our article Why is My Tankless Water Heater Beeping? 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)). 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. There are a few reasons why the reset button might trip. It represents a water protection fault at the indoor unit. Rheem Tankless Water Heater Code 11: The Reasons & Solutions 01. As always, your best resource is your owners manual since it'll have the specific information you need for your model. window.mc4wp = window.mc4wp || { That being said, customers have reported a much higher frequency of certain codes, which well cover here. Make sure that the fan motor is operating properly. Do note that solving each code will require a comprehensive understanding of the technical details of a tankless water heater. This is largely because the Rheem tankless water heater is not specially designed for continuous running along with a circulation system. If you get the voltage reading, take another measurement at connector B between the White#2 and White#8 wires. It indicates a neutralizer drainage failure. I have noticed that this problem occurs when the flame rods are dirty and needs to be cleaned. These steps will get fix the fault and restore your water heater back to working condition. 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. A false flame being detected may also necessitate a service call, yet there are certain steps to take first. The venting should also be adequately sealed and you may want it inspected by an expert. How to Re-Light Your Rheem Tankless Water Heater. Then, inspect the heat exchanger flapper valve and make it move freely at the vent connection of your water heater. Lastly, ensure the igniter wire harness is intact. It will trip as soon as the water is heated to an extreme temperature. A clogged air inlet filter, dirty heat exchanger fins, and bad heat exchanger thermistor are some culprits behind this issue. What does E5 mean on my Rheem tankless water heater? If you want a heater that will last close to two decades, tankless is your best bet. Reason: Poor/Improper Combustion due to the flame rod. Get FREE quotes from licensed Plumbers in your area today. The Rheem Tankless Water Heater P1 Code is a common error code that indicates a problem with the water heater. Reason: Too High Outlet Water Temperature. 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. it comes to homes, an issue that frequently arises is that the unit that is installed is not of the appropriate size for the households requirements. 1318 - Rheem and Ruud Heat Pump dB Level 1318 Technical Bulletin 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 loose or damaged connections attributed to the motor wiring harness that could be the true cause of the error code. If you observe no remaining flame, dont hesitate to check the relay connection of flame rod connector. Ensure no unit parts are blocked, clogged, or obstructed by debris, foreign objects, or dirt and scale build-ups. E5 on a Rheem Tankless Water Heater means there is a high flow rate. If you encounter an code, it will be displayed on your Rheems digital thermostat display. And thank you for mentioning your issues. 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? If the temperature is insufficiently low on the heat exchanger then you should receive error code 29 on your mid-efficiency or condensing unit. 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. However, if it doesnt, you should measure the thermistors resistance, and the thermistor or the PCB may need to be replaced. If needed, replace it with a new one. 12. To troubleshoot Rheem error code 24, switch off the unit and check if it works with the disconnected remote control. Any help you could provide or resource you can point me to would be greatly appreciated. Use the error code guideline below to identify the problem, or. This fault may be caused by blockages to the heat exchanger, limescale build-up, or even a combination of the two. The content is not intended to be a substitute for professional advice or consultation. We broke down everything that will help eliminate the error message from the control panel. Legal Disclosure:Lildutchuncle.com provides and shares information on plumbing, heating & air quality, home improvement, and other DIY projects. If there is no information, the unit should be working correctly. However, if you are mechanically inclined, keep scrolling. Consult the guide and see whether you have a grasp on the problem indicated by the code. The unit will throw the error code e51 if the gas inlet solenoid valve is at fault. 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. It may be the case that both the fan motor and the control board need to be replaced. But like any other piece of technology, they develop faults. I've been conducting professional home inspections since 2002. 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. })(); Anthony Barnes is the founder of Water Heater Hub and a second-generation plumber by profession. An error code E4 on your Rheem Tankless Water Heater indicates that the flow meter sensor gets faulty. Understanding Noritz error codes and troubleshooting Noritz water heaters. If its incorrect, you should adjust it. If your Rheem displays an error code 29, ensure the heat exchanger is clean of any buildups. To fix the Rheem error code IL, drain and flush the heat exchanger as recommended in your owners manual, which Rheem has provided. Solution: If your tankless water heater is using natural gas, make sure that there is no interruption in gas supply from the distributor. At 210F, it will automatically shut down and switch on automatically when the temperature goes down to 194F. See if there is anything blocking the air vent on the device. Simple. If all seems good, the problem may be a faulty PCB. If you are confident that youre not overworking your unit, consult a professional. Check the venting on the device for any blockage and clear as necessary. Am I right? However, even the best tankless water heaters sooner or later may stop working or be affected by other Check the flame rods condition, wiring, and voltage. We recommend you check for a broken wire or poor electrical connection. Rheem error code 14 means the overheat film wrap has been activated, usually caused by a hot spot. You may need to replace the thermistor or the PCB. Other Troubleshooting Tankless Water Heater Error Code Guides, Error Code 00: One Hour of Continuous Combustion, Error Code 05: Imperfect Combustion Alarm, Error Code 13: Flame Rod: Poor or Improper Combustion, Error Code 21: Malfunction of Air Intake Filter Switch, Error Code 29: Temperature is Too Low on the Heat Exchanger, Error Code 35: Improper Thermistor Connection, Error Code 52: Modulating Solenoid Valve Fault, Error Code 66: Water By-Pass Control fault, Error Code 72: Flame Sensing Device fault, Error Code 76: Communication Fault with Remote Control, Error Code 80 and 81: Gas Cut-off Failure / Extinction Failure, Error Code 82: Gas Type Control Data Failure or PCB Data Failure, Error Code 92 and 93: Neutralizer Abnormality, Error Code 99: Fan Motor is not Creating Enough Ventilation, Error Code IL: Scale Buildup Inside the Heat Exchanger, Troubleshooting Tankless Water Heater Error Codes: Rinnai, Troubleshooting Tankless Water Heater Error Codes: Rheem, Troubleshooting Tankless Water Heater Error Codes: Navien, Troubleshooting Tankless Water Heater Error Codes: Noritz, Troubleshooting Titan Tankless Water Heater Problems, Troubleshooting EcoSmart Tankless Water Heater Error Codes, Troubleshooting Tankless Water Heater Error Codes: Bosch. It will alert you that your water heater requires service or that there are damaged or broken components you need to repair or replace. 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. An error code 90 typically indicates that there are blockages in the heat exchanger or blower motor. Replace it if necessary. There may also be blockages in the heat exchanger which should be removed. Increase the flow. 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. Follow the same troubleshooting procedures outlined in error code 61. The fan motor should also have the right voltage and may be water damaged due to condensation. You may also want to ensure that the altitude settings are correct for your location. A faulty water flow sensor or PCB can also be the reason for your unit not working. Check if the water inlet filter or fixture aerator is clogged and unblock it if it is. 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. It will be better if you install the heat tape close to the exit to the main drain to get the best output. When there is any problem with the unit, it will pop up an error code on the display. Next, check the resistance of the heat exchanger thermistor. To clear this fault, you will need a pump and two hoses. 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. Typical Gallons Per Minute. Error code 92 is displayed during operation, and when the unit is switched off, error code 93 is shown. How do you clear the error code on a Rheem tankless water heater? No spam, we promise. They are usually displayed on the screen of the heater unit itself. Rheem error code 31 indicates a malfunction with the water inlet thermistor. 2. Ensure the programming chip is suitable for your Rheem model, and the altitude at which the unit is used. To fix this issue, you need to slow down the flow rate. If the heat exchange fins get clogged, release the blockage. If you need to reset the code on your Rheem tankless water heater, follow these steps: 1. This educational content is not intended to be a substitute for professional advice. From top to bottom of this guide, we broke down every error code our tankless water heater displays. Cause: Most of the time, the water heater doesn't start because the hot water tap is not fully open, so the water flow is low. Apart from these, defective combustion systems, problems with the main burner or pilot, and faulty motor are other culprits responsible for throwing this error code. For instance, the exhaust cannot be recirculated back into the units fresh air intake. Knowing that the ignition has failed is straightforward enough yet finding out why can prove difficult. If your Rheem tankless water heater shows an error code 00, try restarting it. } It will usually be red or black, and may be labeled "reset.". 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? ). You may need to replace the air filter switch assy or the PCB. Check the heat exchanger for scale buildup. Now, remove the three side screws of the blower motor and take out the blower motor. Should the heat exchanger keep a temperature of 207 F for a period of longer than 15 seconds then error code 15 may occur. Now, you may ask- how can I determine whether the suspect is the remote control or its wiring? However, if there is no information, measure the resistance to the heat exchanger thermistor. We don't tend to provide any plumbing advice or any advice that should come from a certified professional. The reset button is there for safety reasons. Solution: If you cannot find the problem in the venting system, and cannot remove what is blocking the regular operation, call the service. Dont forget to release the blockage if needed. The water shutoff valve and hot water tap need to be fully open. Insufficient Or Restricted Gas Flow 02. 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. On the other hand, you should get a neutralizer kit and install it on your water heater if the neutralizer drainage fails. To resolve this false flame issue, start by resetting the unit. The neutralizer may need to be replaced and if it does then error codes 92 and 93 may be set off. Every electric water heater has a reset button, and with good reason. 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. 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. 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. 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. The resistance of connector R between #Black3 and #Yellow5 wires will be 4K to 10K ohms. We earn a commission if you purchase at no additional cost to you. What does E5 mean on my Rheem tankless water heater? Rheem Electric Tankless Water Heater Error Code E4, 04. We will assume that the licensed plumber/installer professionally installed your Rheem tankless water heater. 10 Common Reasons. However, the error code helps you troubleshoot the problem when scale buildup or malfunctions occur. listeners: [], First off, make sure there is enough fuel in your gas tank. There is a problem with the gas control valve. 3. Before they arrive, you can check that the gas valves are all open with gas actually reaching the unit properly. If you dont know how to detect the source of the problem, you can read this guide. Ignition failure at start up. There is an issue with the PGFR (proportional gas flow regulating) valve. Specifically, error code 92 would display when the water heater is continuing to operate and is a warning to replace the neutralizer soon. If the maintenance information does not indicate the water being too hot, check the hot outlet thermistors resistance readings. Solution: Make sure that the gas shutoff valve provides enough gas to the main gas burner, and there is no obstacle. Inspecting their condition and cleaning them will typically fix this error code. There is an issue with the outlet thermistor. Compare HSI to other ignition systems. Replace the PCB or the gas inlet solenoid valve if needed. Tilt down the computer board, which will reveal the blower motor. Take the time to remove any obstructions from the venting as well as where the vent terminates outside. Error codes are never a pleasant site, but theyre designed to make your life easier. 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. Just turn off the water supply valve to slow down the flow. (function() { on: function(evt, cb) { To erase the error code 13, start with cleaning the dirty flame rods. Check the air intake and exhaust venting. The blower motor and flame rod FL-25 should also be checked. 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. Damaged Igniter Wire Harness 04. 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. If the readings are not right, replace the thermistor; if they are within specs, you may have to replace the PCB. You may need to replace the heat exchanger thermistor or PCB. } This is relatively simple and can just mean shutting off all your hot water faucets. 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. Rheem error codes 80 and 81 indicate a gas cut-off or extinction failure. { This code is known as the continuous combustion fault. Water flow is below the minimum required. In this guide, we will describe the common error codes this tankless water heater displays. Your tankless water heater will display this wrong message if the venting system fails or doesnt work properly. There are over 30 codes possible on Rheem devices. 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. You may need to replace the thermistor or the PCB. The alarm sounds every 60 seconds when the tap is open. You may have to replace the PCB if the readings are within specs. Rheem error code 03 means there is a problem with the manifold control. When this error code will pop up, understand there is no ignition on your tankless water heater. Your email address will not be published. Rheem Tankless Water Heaters Error Codes Breakdown Error Code: No Code It occurs when the water flow rate is extremely low. To learn more about error code 14, read this in-depth guide. If the water doesnt flow, we recommend you increase the flow rate. However, even the best tankless water heaters sooner or later may stop working or be affected by other kinds of problems. Hire a plumber and tell him to clean the inlet filter at the cold water connection to the unit. You may need to ensure that the inlet valve is completely open and there are no obstructions to the cold water inlet pipe. 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. 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. As soon as you spot an error code on your Rheem tankless water heater you may begin to panic as to what it means. The unit should work correctly if the water temperature is displayed in the maintenance information. Founded by Hubert Miles, Certified Master Inspector. Most tankless water heaters are operated by natural or LP gas. Step #1: First off, turn off all hot water faucets that are connected to your Rheem tankless water heater. Replace the PCB if the error code 82 persists. The most common Rheem codes are found here on Rheems official website (click on the first drop-down FAQ section). If not, you should replace the flow meter sensor or the flow control valve of your Rheem Tankless Water Heater. Replace the water control assembly or the PCB if necessary. Next, access maintenance information to determine the flow rate. If you want specific instructions, consult the owners manual. If the flow meter sensor gets defective, the unit fails to send a signal to the computer that is responsible for starting the device.

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