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. 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. Reason: Current fault with the Blower Motor. The minimum flow rate should also be met to make sure that the tankless water heater fires. You should replace the gas control assembly if there is a remaining flame. When I can see a flame but the code displayed is Code 10, the problem is that the flame sensor is malfunctioning. To fix this error, replace the neutralizer. Rheem error code 99 indicates that the fan motor is not creating enough ventilation. Check the wiring, the Molex connections, and ensure no scale buildups or debris. The resistance of connector R between #Black3 and #Yellow5 wires will be 4K to 10K ohms. It will be better if you install the heat tape close to the exit to the main drain to get the best output. In this article, we will look at the main Rheem error codes, what they mean, and how you can address them. I am glad to help. If the flow meter sensor gets defective, the unit fails to send a signal to the computer that is responsible for starting the device. If there is no information, check the inlet thermistors resistance readings and replace the thermistor if they are not good. If this doesnt work, your next step is to check the gas valve wire connections to ensure they are secure. Rheem error code 03 means there is a problem with the manifold control. Check the heat exchanger for scale buildup. callback: cb If you're looking for help fixing your Rheem Water Heater, look no further! We recommend you check the heat exchanger fins first for blockage. How to troubleshoot Rheem tankless water heaters by using the service error codes chart. Locate the thermostat dial. If there are none, check the exhaust and inlet flue for any blockages. Now, you may ask- how can I determine whether the suspect is the remote control or its wiring? If you dont get this reading, you should replace the heat exchanger thermistor. It will be best to check the manual and use the fuel type recommended by the manufacturer. Ensure that the altitude is set correctly for your particular needs and the vents meet the necessary size requirements for safe operation and use. When you shop through links on our site, we may earn an affiliate commission. Sensible Digs is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. There is an issue with the inlet thermistor. Save my name, email, and website in this browser for the next time I comment. If there is enough current running, you may need to replace the burner assembly; otherwise, replace the PCB. If fault re-occurs book service call. Get DIY installation tips and troubleshoot common problems. All Plumbers are screened, licensed, and insured. Rheem error code 79 can be caused by condensation or moisture accumulation over the fan motor or damaged or loose wiring. Did not see that error code here. If your Rheem tankless water heater has been running continuously for over an hour you should look to reset the system. Worked yesterday. 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? The blower motor and flame rod FL-25 should also be checked. The fan motor should also have the right voltage and may be water damaged due to condensation. Rheem Tankless Water Heater E5 Error Code - Fixed } Rheem tankless water heater starts malfunctioning over time. Yes, your water heater will occasionally produce cold water in addition to the hot water it normally produces. And thank you for mentioning your issues. If you get the voltage reading, take another measurement at connector B between the White#2 and White#8 wires. Issues affecting the thermistor, such as wiring. Replacing the control board is the only solution to fix this water heater issue. Increase the flow. You should follow the same troubleshooting steps as in error code 51. Rheem Tankless Water Heater Code E5 [7 Easy Fixes] Begin with cleaning the air inlet filter. We earn a commission if you purchase at no additional cost to you. 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 Tankless Water Heater Troubleshooting [Complete Guide] TS: E4 Error Code 45H/HI - Eccotemp Help Desk Error code 35 should require you to inspect each of the thermistor connections to the control board as they should all be securely connected. Error code 12 means your tankless water heater fails to detect the flame. How to install water heater heat traps quickly and easily? If all seems good, the problem may be a faulty PCB. 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. The specific codes might also differ slightly depending on your specific model of Rheem. If your Rheem displays error code 38, light the burner for a few minutes and measure the sensors current readings. Check the water flow servo and the cold water bypass system. The valves, the main burner, the flame rod electrodes, or the PCB may need to be replaced. The water temperature on the remote control is set too high. Your tankless water heater will display this wrong message if the venting system fails or doesnt work properly. The repair guide provides info on how to deal with the heating problems. Close the hot water taps and remove or turn off the circulation pump, if any installed. Company's make changes through the years, and Rheem has been in business a long time with a wide range of tankless water heaters . If the fault is not so serious then you may be able to fix it yourself and get your water heated soon enough. The flame rod wire should be connected and it should be free of any carbon build-up. Compare HSI to other ignition systems. Home | Sitemap | Blog| Privacy | Disclaimer | Contact| About. Begin with slowing down the flow rate of your water heater. Replace the PCB or fan if necessary. There is a wide variety of potential causes for the problem, including faults with the supply of gas and electricity, or failure to regulate temperature. Rheem water heater error codes are short and simple. Several reasons are responsible for the heater to throw this error message. Measure its resistance and voltage and replace it if necessary. I have just updated this article as per your request. 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. Rheem Tankless Water Heater Error Code 29, 11. If needed, clean the inside of this motor. Flame failure during operation. We have a rheem electric tankless water heater with E5 code I've been conducting professional home inspections since 2002. See if there is anything blocking the air vent on the device. A list of AO Smith tankless error codes for easy and inexpensive troubleshooting. 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. If they are then you may want to contact a specialist to take a look. Call the technician. Contractor or business name who did the installation and service. Rheem error code 79 means there is a problem with the current of the fan motor. Problems with the combustion can also be caused by the flame rod though this should only display on an indoor Rheem tankless water heater system. If your water heater is old then you may want to pay more attention to the warning signs that it may be failing. 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. 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. A temperature of 32F means the thermistor that does not make a good connection, and 199F means a direct short. Resetting a Rheem Tankless Water Heater: Ultimate Guide, Candy Tumble Dryer Keeps Stopping: Troubleshooting Tips, Loc Error Code on Hoover Dryer: Troubleshooting Guide, [Fixed] Rheem Tankless Water Heater Code 12, Hot Water Heater Calcium Removal [How to Guide], Samsung Washer SUD Code but no SUDs? Besides, faulty water control assembly is another reason responsible for flashing the error code 65. If you exceed the limit, the water will no longer be heated. We recommend you check for a broken wire or poor electrical connection. Of course, dont hesitate to replace the blower motor if it gets broken. After another 20 seconds, switch the remote control on and the water supply too. That being said, customers have reported a much higher frequency of certain codes, which well cover here. Error code 05 could be triggered by an issue with the air intake or a blockage leading to the vent exhaust. Also, dont forget to check the breather box for debris and use a vacuum cleaner or a lightly damp rag to clean the box. The diagnostics become simpler since the Rheem tankless heaters use the electronic control board and advanced technology with an optional remote controller and control panel. Appliance. He has a good standing reputation for superior skills in heating, air conditioning, hot water tanks, and indoor air quality systems. 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. Common symptoms, problems, and fixing tips. Shut off the water heater by unplugging it, Open the end caps on the valves and attach the hoses to them, Fill a bucket with water and add vinegar to it. Rheem tankless water heaters are among the most reliable you can buy, but like any technology, they will eventually encounter issues. Check for an operational igniter and for any damage to the igniter wiring harness. Touching any wires while the power is on can cause an electric shock. 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. Want to know what the error code displayed on your Rheem tankless means? Ensure the MIC-180 and the EZLink are installed and set up correctly. Then, reset the Rheem tankless water heater again. 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. Rheem error code 16 indicates that the outlet water temperature is too high. Why is Your Water Heater Leaking From Overflow Pipe? You may need to flush the system using distilled white vinegar though do be careful as the water would naturally be hot. Am I right? Lastly, ensure the igniter wire harness is intact. And lastly, check out the burner manifold pressure. If the readings are looking good, the PCB may be at fault. We broke down everything that will help eliminate the error message from the control panel. If the readings are not right, replace the thermistor; if they are within specs, you may have to replace the PCB. Ensure the heat exchanger flapper is not blocked and moves freely and that the whole vent system is clean and not blocked. Start with inspecting the remote control. Make sure that the fan motor is operating properly. If needed, replace it with a new one. 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. This is another fault that you may want to check with a professional. 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. Dont forget to release the blockage if needed. It is a significant upgrade to the version that uses tanks and delays water supply till it's hot. 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. Before doing so, remember to remove the Molex from the CB. 90% of the time, this troubleshooting step will help to eliminate the warning message from the control panel. . You can also refer to your models user manual. LPG users check Propane bottle level. No spam, we promise. Run the unit and check if the error code persists. But like any other piece of technology, they develop faults. It indicates a neutralizer drainage failure. Some simple issues can result in the water flow being low and you should be able to solve them yourself. There is an issue with the PGFR (proportional gas flow regulating) valve. Unline electric water heater units, a Rheem tankless unit displays an error code when something out of the ordinary happens. On demand, tankless units dont have a constant pilot light. 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.) Once you clean or change the blower motor, follow the steps in reverse to reinstall the blower motor. Rotate the thermostat to achieve your desired water outlet temperature. 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. One for the hot side and another for the cold side. This code is known as the continuous combustion fault. Finally, check for blockages in the inlet filter and combustion fan. Make sure to check all four sensors. One common problem with Rheem tankless water heaters is not getting any hot water while showering. Heres what you can do: Code 12 signifies that the water heater does not detect a flame. Rheem Tankless Water Heater Code E5 [Reasons + Solutions] This neutralizer is specially designed to keep the drain condensate away from the water heater. From cleaning the aerators as well as checking the pressure and flow of the water from your hot water faucet to checking then cleaning the water inlet filter on your tankless unit. Follow the same troubleshooting steps and procedures as in error code 51. While troubleshooting your Rheem, do not operate it or open the hot water tap, especially while testing it using the Min and Max buttons. We will assume that the licensed plumber/installer professionally installed your Rheem tankless water heater. These issues can include water leaks, that it runs out of hot water quickly, and suffers from an inconsistent water temperature. Otherwise, you should replace the water flow sensor. If the waters temperature is too high, this should be indicated in the maintenance information. To erase the error code 13, start with cleaning the dirty flame rods. Before finding out the source of the problem, we recommend you pull out the remote control wiring from the wiring terminal on the PCB. So, follow the troubleshooting steps we mentioned to clear the error message. [Fixed], Honeywell Water Heater Gas Valve Reset (How-To Guide), 15 Common Rheem Error Codes [Ultimate Guide], Rheem Tankless Water Heater Code 11 (Fixed), Top 5 Navien Tankless Water Heater Problems [Fixed], Whirlpool Duet Dryer No Power To Control Panel (Causes + Solutions). If your Rheem displays an error code 29, ensure the heat exchanger is clean of any buildups. There could also be loose or damaged connections on the wiring harness for the gas control valve which could set off error code 71. If you have a Rheem tankless water heater, you may have noticed a code 11 on the display. However, the error code helps you troubleshoot the problem when scale buildup or malfunctions occur. Tankless water heaters generally last considerably longer than tank-type heaters, as they dont hold corrosive water for prolonged periods. You can find a full list of error codes here. Rheem Tankless Water Heater Error Code 12 (This Should FIX it) If the readings are not within specifications, you may be dealing with a faulty thermistor, which you should replace. 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. Rheem tankless water heaters provide water on demand. Follow the descaling procedure to remove the scale build-up in the heat exchanger (there should be an error code). Tankless Electric Water Heaters for your Home - Rheem - Rheem For this reason, you are best to check the owners manual for your device for an accurate, up-to-date list of codes. Disconnect the vent structure from the unit. Cycle your water heater two times by turning off- then turn on- at 10 seconds intervals. Do note that solving each code will require a comprehensive understanding of the technical details of a tankless water heater. If the error code 12 persists, contact a licensed technician. There are a few reasons why the reset button might trip. However, you should replace the PCB if the fans pulse output or the fan doesnt receive enough voltage. We don't tend to provide any plumbing advice or any advice that should come from a certified professional. 2. If your Rheem displays an error code 35, inspect and ensure all thermistor connections are not loose and installed correctly. Replace it if necessary. 11 Common Rheem Water Heater Blinking Light Codes - Lil Dutch Uncle Cookie Duration Description; cookielawinfo-checkbox-analytics: 11 months: This cookie is set by GDPR Cookie Consent plugin. If using propane gas, make sure that the propane tank has enough gas. } Our comprehensive Rheem Water Heater Troubleshooting guide will explain common is. Ensure the flame rod and gas valves wiring are in good working condition, installed correctly, and receive enough voltage. To troubleshoot Rheem error code 24, switch off the unit and check if it works with the disconnected remote control. After that, you should replace the front panel and then restart the heater. Also, check that the vent terminal was installed properly on the device. Ensure the connections to the circuit board are secure. After cleaning the inlet filter, run the hot water only in the tap to check. 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. The neutralizer may need to be replaced and if it does then error codes 92 and 93 may be set off. This particular error code could also be triggered due to the wrong altitude setting if you reside in a high-altitude environment. The wiring for the flame rod may also be damaged, and the flame rod needs to have sufficient voltage. Again, there should be no obstructions to the airflow and the vent terminal should be clear. Learning the error codes of your Rheem tankless water heater may seem exhaustive yet can prove to save you money. 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.
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