Our comprehensive Rheem Water Heater Troubleshooting guide will explain common is. Rheem error code 15 means the heat exchanger is overheating. Switch off the unit from the control panel. Whether you need a new water heater, a sink repair, or a toilet fixed We Can Help! There is an issue with the PGFR (proportional gas flow regulating) valve. NOTE: Because these are potentially hazardous areas, dont attempt to fix a Code 11 unless you are a professional. Reason: Current fault with the Blower Motor. The flame rod wire should be connected and it should be free of any carbon build-up. The gas pressure to your water heater should range between 1.2- 3.5Kpa. A clogged air inlet filter, dirty heat exchanger fins, and bad heat exchanger thermistor are some culprits behind this issue. Make sure to check all four sensors. Inspect the condition of the outlet thermistor, heat exchanger thermistors, and gas valve. If everything looks in good condition, you may replace the PCB. When there is any problem with the unit, it will pop up an error code on the display. The water heater will trigger the error code E5 if there is too much water flow. 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. 10 Common Reasons. There is an issue with the inlet thermistor. Secondly, inspect the exhaust vent or air intake pipe for a clog. Check the water flow servo and the cold water bypass system. For instance, the exhaust cannot be recirculated back into the units fresh air intake. Typical Gallons Per Minute. Insert a flat-head screwdriver through the thermostat dial. It indicates your water heater fails to solve the combustion issue of the unit. There are over 30 codes possible on Rheem devices. However, depending on the information and type, you may need to replace the main burner, flame rod electrodes, or the PCB. Rheem Tankless Water Heater Error Code 12, 10. } Do note that solving each code will require a comprehensive understanding of the technical details of a tankless water heater. 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. . Watch the following tutorial to learn how to replace the water flow sensor. Rheem water heater flashing red light 4 times. Ensure you eliminate every obstruction from the vent termination of the building and the flapper valve. The heat exchanger may also be suffering from separations or cracks. Next, inspect the ODS thermocouple to see whether it functions properly or not. 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. Finally, check for blockages in the inlet filter and combustion fan. The next step is to take off the heaters front panel so you can get to the limit control switch. If there is any damaged wiring, your water heater will be unable to send a signal to the control board. Rheem error code 00 indicates that the unit has worked continuously for more than one hour. If the inlet screen at the cold water connection gets clogged with dirt & debris, the water will not flow through it. Secondly, take your eyes on the heat exchanger to see whether it gets dirty or not. Ensure that the vent pipes are connected to the vent termination and that the venting meets various requirements (such as lengths, diameter, the construction material). Before developing Water Heater Hub, Anthony Barnes was a full-time plumber, and he has undertaken a wide variety of projects over the decades. Check if the maintenance information displays the hot water outlet temperatures. Ensure the condensate flow is free of dirt, debris, and buildups. If you can solve a problem or a fault without having to make a service call then, not only will you learn more about how the water heater works, but you will likely save yourself some money. If you exceed the limit, the water will no longer be heated. Understanding Noritz error codes and troubleshooting Noritz water heaters. Worked yesterday. Why Do You Feel Sticky After Swimming? Replacing the control board is the only solution to fix this water heater issue. Installing the kit on the water heater, will treat the condensate properly for safe disposal into the drain. We earn a commission if you purchase at no additional cost to you. 11. 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. To reset the water heater, turn off the hot tap water and the unit itself. Ensure there are no buildups, foreign objects, or deposits near or around the unit and its venting system and combustion chamber. 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. A temperature of 32F means the thermistor is not connected correctly, and 199F indicates a direct short. If this drainage system gets clogged, your tankless water heater will flash the error code 29 to prevent the burner from being flooded. There are a few reasons why the reset button might trip. If there is no information, check the inlet thermistors resistance readings and replace the thermistor if they are not good. If the fan doesnt move, then ensure it receives enough voltage. The vent exhaust can be a little more complicated to solve though you should start by simply checking and removing any obstructions to the exhaust vent. Then, locate the two terminals connected with the remote control. There are different reasons for why the water would flow through the water heater, but nothing actually occurs, specifically, that the water is not heated. If your Rheem displays an error code 76, confirm the remote control wiring is in good condition and tight. If the temperature is insufficiently low on the heat exchanger then you should receive error code 29 on your mid-efficiency or condensing unit. 14. If not, continue reading. Rheem error code 05 can be caused by blocked air ventilation and exhaust flue systems. And thank you for mentioning your issues. If your Rheem tankless water heater shows an error code 00, try restarting it. Join our exclusive 2,500+ email list to get tailored advice, product roundups, and be the first to see our new content. If the igniter and the fan function but the main burner doesnt, we bet one of the gas solenoid valves doesnt work properly. 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. We don't tend to provide any plumbing advice or any advice that should come from a certified professional. It will trip as soon as the water is heated to an extreme temperature. Reason: Insufficient Heat Exchanger Temperature. Check the air inlet filter, clean it, and ensure the vent pipes are connected correctly. Rheem error code 34 indicates a problem with the ambient combustion air thermistor. The neutralizer may need to be replaced and if it does then error codes 92 and 93 may be set off. Performing regular maintenance on your Rheem tankless water heater should prevent error code 1L from occurring. Ensure the connections to the circuit board are secure. This fault may be caused by blockages to the heat exchanger, limescale build-up, or even a combination of the two. The repair guide provides info on how to deal with the heating problems. Then, turn on the water heater again, which will reset the heater. During the winter, water can freeze in the drain piping, effectively blocking it and causing an error code 29 to appear on the unit. Nonetheless, freezing weather can also block up the neutralizer drainage system. If the error code 12 persists, contact a licensed technician. There may be a fundamental issue with your control board that it is not programmed properly or that the wrong gas type has been entered. 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. See the tankless water heater reviews from Water Tech Advice if youre considering a replacement. We hope this list helps you troubleshoot your Rheem tankless water heater and obtain a steady flow of hot water again. Afterward, remove every speck of dirt, debris, and buildup from the air intake filter. Afterward, measure the voltage of the wiring between the water control and the connector B. First off, turn the unit off at the remote controller or at the circuit breaker. Close the hot water tap and turn OFF the remote. There may also be loose or damaged connections attributed to the motor wiring harness that could be the true cause of the error code. Call the service if none of the steps taken above works. 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. We recommend you check out this in-depth guideline on Rheem Tankless Water Heater Code 11. Rheem error code 24 indicates a problem with an operational switch. Now, you may ask- how can I determine whether the suspect is the remote control or its wiring? Rheem error code 71 means a problem with the gas inlet solenoid valve. Solution Initially, fine-tune the water flow or temperature. good stuff mate i have a rheem gas 871624pfj tankless it comes with code e 51 ,i turn unit off it clears error code and will work and stay working untill you stop using hot water then back to e51,cleaned filters ,still same any help pls. Learn how they work and if they're worth the effort and cost. 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. Make sure that the fan motor is operating properly. The neutralizer needs to be replaced soon. Also, make sure you tidy up the air inlet filter, combustion air fan, and heat exchanger fan. Close the hot water taps and remove or turn off the circulation pump, if any installed. First, check the exhaust and venting flue for any blockages. Begin with slowing down the flow rate of your water heater. Yes, your water heater will occasionally produce cold water in addition to the hot water it normally produces. According to Rheem, the error code 10 will pop up when the fan motor fails to create sufficient ventilation. Unless you have an in-depth knowledge of water heaters, youre best to not risk making the situation worse. Simple. ); There should definitely be no obstructions for the exhaust termination and flue inlet, check that both have the right amount of clearance space too. Rheem error code 21 means the air intake filter is not working correctly. Follow the same troubleshooting steps and procedures as in error code 51. To fix this issue, you need to slow down the flow rate. Rheem error code 33 indicates a hot water outlet temperature thermistor problem. Symptoms, causes, and step-by-step troubleshooting guide to fix the most common problems on Rheem on-demand models.

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