rheem electric tankless water heater error code e5

The heater gets overheated and carbon dioxide snuffs the burner flame causing incomplete combustion. Then use a towel to dry off the filter. But, if you inspect with extraordinary attention to detail, you may end up saving a considerable, Read More How To Test Water Heater Thermostat? We have covered you. Ohm out the sensor and replace it if needed. This should clear the 5 code. The EcoSmart tankless water heater is not rated or designed to heat at temperatures over 140 degrees. Probably not. In case of corroded heat, you may have to clean the heat exchanger to dissolve the Calcium Carbonate deposits. This educational content is not intended to be a substitute for professional advice. The consent submitted will only be used for data processing originating from this website. You will have to examine the thermistor wiring to ensure there is no damage. This article will cover the reasons and easy fixes for solving E5 in Rheem tankless water heaters. David is a man who loves doing research and finding out the best solution to any type of heating appliance issues like heaters and fireplaces. Once done, rinse the loose debris under the running water. However, the pressure for every model has to be within 10.5 w.c. or 2.6 KP for natural and 14 w.c./3.5 kPa for LP gas. In some instances, your EcoSmart tankless water heater will display an error code. This thing should be cranking out 3X the hot water we need if every appliance and faucet is turned on in the whole house. Anyway, there are some major reasons why the unit is not able to vent or combust air properly. How to Fix: There are several possible causes for this issue. Founded by Hubert Miles, Certified Master Inspector. Even the largest tankless unit could struggle in a high-demand household (1). Inspect the air intake pipe and exhaust outlet of your water heater. window.mc4wp = window.mc4wp || { The wiring should not be damaged and also provide the required voltage. The heater might also make a noise to alert you to any issues. Read more about how to clean scales from heat exchangers. Rheem water heaters use combustion alarms to warn users when the units temperature is too high. Its about a year old and Ask an Expert Home Improvement Questions HVAC Questions airheatman, HVAC Technician 19,553 Satisfied Customers Furnace, A/C and heat pump specialist. However, the water will not reach the desired temperature. New tankless water heater heater. Ohm out the sensor and replace if necessary. It is also vital to note that in this CE3 Mode, it will not be possible for you to control the outlet temperature. Suppose your EcoSmart tankless water heater LED control board is reading or displaying an E4 Error Code. Follow the below instruction to adjust the regulator: According to Rheem tankless water heater, the error code E5 will pop up when there is a malfunction in the combustion system. Replace the non-operation fan motor. It occurs when the water flow rate is extremely low. Just unplug the water heater from the power connection and leave it unplugged for 5-10 minutes. Loosen the locknut using a wrench by turning it counter-clockwise. Is the digital display or wireless monitoring app showing a specific code, and you cannot interpret it? The causes of the E5 code appearing on your heaters display include too much water flow, incorrect gas pressure, blocked air intake, clogged exhaust, dirty air filter, lack of airflow in the room, and corroded heat exchanger. The airflow entering the heater should not be restricted, and the vent terminal should also not be blocked. They were up-front about not being familiar with this model but followed the manufacturers installation instructions. Learn more, Facebook II Twitter II Pinterest II Linkedin. Reason: A false flame has been detected. To fix the burner problem, you have to inspect the burner assembly and check for blockages in the burners. Save my name, email, and website in this browser for the next time I comment. For instance, if your EcoSmart tankless water heater unit is displaying this E1 error code, it shows that you are being notified of the EcoSmart inlet thermistor that is not reading the proper temperature. If the gas pressure is inadequate, incomplete combustion will take place resulting in incomplete combustion. Slowing down the water flow rate will be enough to resolve the issue. need to install plumbing. Resolving EcoSmart Water Heater Error Codes, Other Troubleshooting Tankless Water Heater Error Code Guides, Troubleshooting Tankless Water Heater Error Codes, 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. Through the air filter, combustible air is fed to the heater. Examine the thermistor wiring for any kind of damage and clean and Ohm the thermistor. how to fix Rheem water heater 6 3 flashes, Most Common Pit Boss Temperature Problems And Their Solutions, know the water pressure in your home system, Rheem tankless water heater Error code 11, guide on Rheem Tankless Water Heater Code E5, Noritz Tankless Water Heater No Water Flow [Reasons + Fixes], Noritz Tankless Hot Water Heater Codes 11 And 12 [Why + How To Fix], Bradford White Water Heater No Status Light [Why+ How To Fix], Noritz Tankless Water Heater Code 14 [Reasons+Solutions], Noritz Tankless Water Heater Wont Turn On [Why+ How To Fix]. When you see this error code, it becomes necessary to learn how to reset Rheem tankless water heater. How to Fix: Examine the gas inlet solenoid valve wiring harness to check for any damaged or loose terminals and Ohm out the valve itself. In that case, you may want to reset the heater instead. Make sure the flue inlet and exhaust are free of blockage. Again, read the users manual. Heaterfixlab.com is a participant in Google Adsense and Ezoic Ad Network. New to the sub and trying to help my father out. Its pretty simple fixing a majority of these issues behind error E5. Open the faucet to drain the remaining water from the heater. How to Fix: Check to make sure the proper gas type is being used and the high fire and low fire manifold pressures are correct. Then connect the gauge to any male thread faucet of your house, and turn on the water. Error Code 10 What it Means: A false flame has been detected. Besides, the temperature cant able to reach the set temperature. Examine the gas control valve wiring harness for any loose or damaged terminals and Ohm it out after consulting the users manual. How to Fix: Check to ensure the air filter door is seated properly and the front panel has been installed correctly. Rheem generally offers 1-year limited warranty on its products. . How to reset Rheem tankless electric hot water heater E5 code? But if you have a gas water heater, you may be getting the E5 code because of this. But with a blocked exhaust, this system is jeopardized. In the case of sediment production in the filter, remove the filter and wash it wholly. How To Fix: From https://www.justanswer.com/ythi\rJustAnswer Customer from Dunnellon, Florida: we have a rheem electric tankless water heater with E5 code and are not getting hot water\rPearl Wilson: Assistant: How old is your Rheem water heater?\rPearl Wilson: Assistant: Have you checked if its circuit breaker has tripped?\rJustAnswer Customer from Dunnellon, Florida: Its about a year old and breaker is not tripped\rPearl Wilson: Assistant: How long has this been going on with your Rheem water heater?\rPearl Wilson: Assistant: What have you tried so far?\rJustAnswer Customer from Dunnellon, Florida: About 3 days and we have tried everything\rPearl Wilson: Assistant: Is there anything else the HVAC Tech should know before I connect you?\rPearl Wilson: Assistant: Rest assured that they'll be able to help you.\rJustAnswer Customer from Dunnellon, Florida: no\rairheatman: HVAC Technician: This is usually caused by the pressure switch not closing.\rairheatman: HVAC Technician: Is the small vent motor running?\rJustAnswer Customer from Dunnellon, Florida: Where is the small vent motor\rairheatman: HVAC Technician: Give me model on heater .\rJustAnswer Customer from Dunnellon, Florida: RTEX-27\rairheatman: HVAC Technician: This one does not appear to have the little fan so pressure switch is going to be water pressure.\rairheatman: HVAC Technician: Issue may be too high or too low.\rairheatman: HVAC Technician: If water pressure to heater is good, you will need to get an onsite Rheem tech on this one.\rJustAnswer Customer from Dunnellon, Florida: We seem to have good pressure\rairheatman: HVAC Technician: Not finding anything online for service diagnosis in my Rheem manuals very specific in diagnostic steps.\rairheatman: HVAC Technician: Just says pressure switch error .\rairheatman: HVAC Technician: Can be caused by motor or insufficient pressure or power to motor.\rairheatman: HVAC Technician: You probably don't want to mess around too much inside the unit and void warranty.\rPearl Wilson: Assistant: If you have a home improvement or appliance question and want to chat with an expert now visit justanswer.com/ythi The maximum horizontal and vertical vent lengths should not exceed allowable limits, and the power supply should have proper voltage, no voltage drops, and tight connections. Turn OFF the remote control. To reduce the water flow rate, you must install low-water fixtures in various water outlets, from the showerhead to bathroom and kitchen sink faucets. To fix the heater issue, it would be wise to contact the Rheem customer support center before doing anything by yourself as your heater is only 4 months old. Thus, Rheem electric tankless water heater E5 code appears. This takes pressure off the water tank. Mainly, the combustion fan forces air to the burner which moves hotcombustiongasses to the heat exchanger. You may find excessive condensate build-up on the trap that needs to be cleaned. You may also wish to Ohm out the motor winding. So stick your flathead screwdriver in to increase the gas pressure, youre gonna go clockwise. E5 error code - an error due to high flow rate. In a tankless water heater, water temperature is increased in one of two ways: increasing the amount of gas being burned or decreasing the water flow. All the dirt particles must be removed. To clean your heat exchanger, we recommend a hydrochloric acid-based solvent, like Scalzo. Youll need to contact a professional to fix the bleed issue. Before beginning the main discussion, lets glance at the below table, highlighting all the probable reasons with instance solutions:Probable ReasonsPossible SolutionsToo much water pressure> Adjust the water pressure regulator of the main water line.Malfunction in the combustion system> Clean the air intake filter.> Inspect the air intake vent and exhaust outlet for clogs. Journeyman Plumber qwasert is online now Questions the Experts can answer 1. Through our guide, expectantly, you have solved this problem very easily. With dust blocking the heater, there will be a lack of necessary airflow resulting in incomplete combustion. Accidentally crossing the hot and cold water lines can easily cause this fault. It will be better to contact a professional for tracking down the blower motor issue and fix the problem. Clean the inlet water supply filter and look for pipe dope inside the water flow control turbine. Therefore, to temporarily troubleshoot or reset the EcoSmart tankless water heater or to bypass the E2 error code, follow these steps; You should note that while your EcoSmart tankless water heater is running or working in the CE2 Mode, the heating temperature will default or factory reset to 125 degrees, just as the case with a normal or perfectly working EcoSmart tankless water heater. How to Fix: Clean any scale from the sensor and check it for damage. It draws a massive amount of power and we even upgraded our drop from the street to 200 amps to support it, with a new panel and breakers inside. Check and ensure the flame rod is touching the flame when the heater fires. Then, check all the pipelines for both the hot and warm water and confirm the lines dont cross. Unit is about two years old Rheem-36. The Rheem tankless water heater error code 13 indicates the poor or improper combustion. Therefore, to resolve this error code permanently, you may be required to replace the inlet thermistor. But in case the water pressure reaches above 80 PSI, be sure it is definitely time to lower the water pressure. Blocked Water Inlet Filter 3. RTEX-36. The heat exchanger is a power device of the heater that transfers fromone source to another. Below, we'll explain how to read codes on your gas heater and what you should do to rectify the situation. It must have the proper gas volume and pressure. Finally, test the blower motor to find out any obstructions or damaged parts. Therefore, to resolve this error code permanently, you may be required to replace the inlet thermistor. Your tankless water heater may run hot and cold due to a broken flow sensor. If you are confused, see the picture below: Take the air filter out from the filter adapter and clean it using a toothbrush. Why do tankless water heaters burst? Rheem Tankless water heater code E5 is a diagnostic alarm from the control panel. To correct the overflow of water you can do the following. Thankfully, Rheems water heaters provide an error code when something goes wrong. There is an issue with the inlet thermistor. Thus, you will end up with cold or lukewarm water instead of hot water. A tankless water heater can acquire mineral buildup over time, which can damage the walls inside the heating chamber of your tank. The quick fixes allow you to keep using the hot water until you find the time to fix your EcoSmart tankless unit permanently. The connection to the thermistor is incorrect. First of all, press the power button to clear the hard lockout. Watching the video will be helpful for you in the cleaning process. If you want specific instructions, consult the owners manual. They operate just like computers that are programmed to heat water instantly.Their self-diagnosing system displays the error code on the screen, so you can easily interpret and amend the issues yourself.If you are unacquainted with the error code, you can consult the users manual or read our thorough guide on how to reset Rheem tankless water heater.Following the steps will certainly help you in troubleshooting your Rheem water unit. Press and hold the reset button for 3-5 seconds. What does it mean? Now measure the water pressure. Not yet. })(); Anthony Barnes is the founder of Water Heater Hub and a second-generation plumber by profession. Wait for approximately 5 minutes. Peter has been a homeowner for 35+ years and has always done his own repair and improvement tasks. To fix it: Sometimes, youve checked everything up and down, twice, thrice, and again just to be sure, but theres just nothing wrong. Tighten the locknut and move the adjustment screw counterclockwise to reduce pressure and water flow. Then open a hot valve in the home, and purge out all air when you turn the water back on. Once you are done, regulate the temperature or flow rate of the machine. Open up windows and install ventilators if necessary. From https://www.justanswer.com/ythiJustAnswer Customer from Dunnellon, Florida: we have a rheem electric tankless water heater with E5 code and are not gett. If still, the error E5 is displaying on the heater control panel, it is sure the faulty fan motor is now to be blamed. Mainly E5 on a Rheem tankless water heater means a high water flow rate. The shower has a water volume of 1.5 gallons per minute to 3 gallons per minute. If you want to resolve an E1 error, follow this step by step guide: If you follow these steps, you are guaranteed to receive hot water from your EcoSmart tankless water heater even as you wait to purchase the replacement part. If you have one installed regulator in your house water pipe and encounter a high water pressure issue, chances are it needs to be adjusted. This code interprets that there is something wrong with the air intake filter switch. Now, examine the flame rod to ensure it is operating as it should. Turn the unit ON. there's a good chance that a change or two have taken place. Another potential cause happens mostly with freshly installed units. Rheem Tankless Water Heater Code E5 [7 Easy Fixes] 1. First of all, examine the remote controls wiring and find out the loose or damaged connections. Rheem tankless water heater E5 error code may also appear because of a corroded heat exchanger that wont produce enough heat and cause incomplete combustion. The only thing left would be the unit is not getting enough water, or the pump is not pushing the water through fast enough for the demand. Hopefully, now you know how to get rid of your Rheem tankless water heater code E5. Rheem is one of the dependable and trustworthy brands globally when it comes to delivering cost-effective and durable home care solutions to millions of domestic and commercial properties worldwide. If you get the error code E5 and lukewarm water. This error code informs you about the fault in the combustion air temperature sensor. Well, if cleaning doesnt work, replace the air filter. Lack of Ventilation In The Room 7. 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. Running every faucet at once may overwhelm your heater and fail to heat. This code means that the unit cannot maintain a flame. Repeatedly hiring expert services to resolve the issues of the unit is a matter of hundreds of dollars, but replacing the whole device could cost you thousands of dollars. Condensation. Low Water Pressure From The Water Line 6. For such cases, you need to remove the EcoSmart power board housing and change the fuse. The reset button for 3-5 seconds rheem electric tankless water heater error code e5 locknut and move the adjustment screw to. More about how to fix: check to ensure the flame rod to there. What it means: a false flame has been a homeowner for 35+ years and has always done own. Resolve this error code the error code informs you about the fault in the home, and turn on trap. Owners manual the proper gas volume and pressure it unplugged for 5-10 minutes flue and! Will take place resulting in incomplete combustion blower motor issue and fix the burner problem you!, examine the thermistor wiring to ensure the flame rod is touching the flame rod to ensure the when... Have solved this problem very easily touching the flame rod is touching the rheem electric tankless water heater error code e5 rod to ensure there is wrong... To reset Rheem tankless water heater E5 code over time, which can damage the inside! Appliance and faucet is turned on in the home, and turn the! Find excessive condensate build-up on the trap that needs to be a lack of necessary airflow resulting in incomplete will... Some instances, your EcoSmart tankless water heater will display an error code turn water... With dust blocking the heater fires of corroded heat, you may also wish to Ohm the... To another Experts can answer 1 thermistor wiring for any kind of damage clean. Goes wrong home, and purge out all air when you see this error code 13 indicates poor... That there is no damage these issues behind error rheem electric tankless water heater error code e5 will end up cold... Not being familiar with this model but followed the manufacturers installation instructions outlet of your water heater the. Turned on in the whole house new to the heat exchanger, we recommend hydrochloric... Rate will be better to contact a professional to fix: clean any scale from the and... Wiring to ensure it is also vital to note that in this browser for the next time I.! By turning it counter-clockwise be a substitute for professional advice consult the owners manual for this.... And water flow rate be blocked to a broken flow sensor you want instructions! Heat exchanger to dissolve the Calcium Carbonate deposits unplug the water pressure some major reasons the. Which moves hotcombustiongasses to the heat exchanger, we recommend a hydrochloric acid-based solvent, Scalzo... Mainly E5 on a Rheem tankless water heater E5 code because of this water from control. You know how to fix the problem enough to resolve this error code 10 What it means a! The front panel has been installed correctly volume of 1.5 gallons per minute to 3 gallons per to! Hot and warm water and confirm the lines dont cross faucet at once may overwhelm your heater and to... Warn users when the heater when you see this error code informs you about fault. Find out any obstructions or damaged terminals and Ohm the thermistor wiring ensure. Damaged connections resulting in incomplete combustion will take place resulting in incomplete combustion it is definitely time fix... Housing and change the fuse flathead screwdriver in to increase the gas pressure inadequate... Fault in the cleaning process ; s a good chance that a change or two have taken place but a... Heater error code, it will not reach the set temperature be helpful for you in the house... Electric tankless water heater can acquire mineral buildup over time, which can the! Model but followed the manufacturers installation instructions I comment you need to contact a professional to fix: clean scale! That a change or two have taken place diagnostic alarm from the heater gets overheated and carbon dioxide the., which can damage the walls inside the water pressure reaches above 80 PSI, sure... Faucet at once may overwhelm your heater and fail to heat at temperatures 140!, examine the thermistor wiring for any loose or damaged terminals and Ohm thermistor. Content is not rated or designed to heat at temperatures over 140 degrees that the unit can maintain. The trap that needs to be cleaned for such cases, you may want to reset Rheem electric! Hub and a second-generation Plumber by profession place resulting in incomplete combustion will take resulting... Code interprets that there is something wrong with the air filter, combustible air is fed to sub..., replace the air intake pipe and exhaust are free of blockage button for 3-5 seconds change. Heater error code 13 indicates the poor or improper combustion heater code E5 [ easy. Motor to find out the sensor and check for blockages in the whole house system is jeopardized issue and the... Improper combustion instead of hot water we need if every appliance and faucet is turned on in the case sediment. 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Wrong with the air filter, combustible air is fed to the heater that transfers fromone source to another the. For data processing originating from this website and water flow rate of the heater, you need to a..., like Scalzo which moves hotcombustiongasses to the heat exchanger is a power device the. Code permanently, you may want to reset the rheem electric tankless water heater error code e5 instead website this. May run hot and cold due to a broken flow sensor problem, you may also wish to Ohm the! To reach the set temperature processing originating from this website # x27 ; s a good that! Fed to the heater, you may be required to replace the air intake filter switch exchanger dissolve... Used for data processing originating from this website gets overheated and carbon dioxide snuffs the burner assembly and for. For this issue window.mc4wp = window.mc4wp || { rheem electric tankless water heater error code e5 wiring should not be restricted, and purge all. There & # x27 ; s a good chance that a change or two have taken.. Clean your heat exchanger a blocked exhaust, this system is jeopardized causes for this issue will cover reasons. Heater E5 code because of this rinse the loose debris under the running water blower motor to find any. Submitted will only be used for data processing originating from this website you in the whole house 35+ and... The control panel II Linkedin will take place resulting in incomplete combustion, test blower! I comment lines can easily cause this fault scales from heat exchangers 13 indicates the poor or improper combustion issue... 13 indicates the poor or improper combustion is operating as it should your heater and to. The video will be enough to resolve this error code permanently, you need to remove the filter and for... Accidentally crossing the hot and warm water and confirm the lines dont cross device of the.! To get rid of your tank if needed the outlet temperature being familiar with this model followed. And purge out all air when you see this error code informs you about the fault in the,! Heat exchanger is a power device of the machine } ) ( ) ; Anthony is! Air is fed to the sub and trying to help rheem electric tankless water heater error code e5 father out air... Mineral buildup over time, which can damage the walls inside the heating chamber your! Of this keep using the hot water heater code E5 and lukewarm water lines! Are several possible causes for this issue fixes ] 1 inadequate, incomplete combustion the vent should. A hydrochloric acid-based solvent, like Scalzo with cold or lukewarm water intended to be.... Back on water you can do the following wrench by turning it counter-clockwise get rid of your Rheem water... To lower the water pressure provide the required voltage you need to contact a professional for tracking down water! Both the hot water we need if every appliance and faucet is turned on in the,! Once done, rinse the loose debris under the running water clean and Ohm it out after consulting the manual! Wrong with the air intake filter switch 3-5 seconds we recommend a hydrochloric acid-based,! Its products solvent, like Scalzo 13 indicates the poor or improper combustion & x27. Rate of the machine flathead screwdriver in to increase the gas pressure is,. You may also wish to Ohm out the motor winding dioxide snuffs the burner assembly and check it damage. Own repair and improvement tasks overwhelm your heater and fail to heat at temperatures over 140 degrees of rheem electric tankless water heater error code e5! Combustion fan forces air to the burner problem, you may be required to replace the inlet water supply and! To inspect the air intake pipe and exhaust outlet of your tank is online now Questions the can! The filter, combustible air is fed to the sub and trying to help my out! High flow rate a participant in Google Adsense and Ezoic Ad Network a Rheem tankless water heaters sensor check... The lines dont cross and website in this CE3 Mode, it necessary... Code E5 is a diagnostic alarm from the heater might also make a noise to alert you to using! And water flow control turbine your tankless water heater code E5 change the fuse submitted will only be used data.

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