A too-high temperature in the combustion chamber can increase pressure and cause heaters to explode. It is just a short fix for this error code. } When you see this error code, it becomes necessary to learn how to reset Rheem tankless water heater. Check the ventilation system and vent openings for blockages or dirt and clean as needed. If the error code E5 is flashing in the display, it tells you that the water flow rate is too high in the system. What part of Australia are you from? The blower runs through a motor and if it goes bad, therell be no airflow at all. Press and hold the reset button for 3-5 seconds. CA-100 can be used for stainless steel heat exchanger cleaning as it is less aggressive than Hydrochloric acid. Just unplug the water heater from the power connection and leave it unplugged for 5-10 minutes. Company's make changes through the years, and Rheem has been in business a long time with a wide range of tankless water heaters . How to Fix: There is likely an issue with the flame rod. A small amount of restriction will still allow it to function freely. What does it mean? Turn off the double 240V circuit in the electrical panel for the water heater. Why is Your Water Heater Leaking From Overflow Pipe? Inadequate gas, a faulty sensor, or dusty combustion parts are responsible for this error. 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. This code indicates that there is some issue with the gas inlet solenoid valve. Moreover, you need to ensure that water pressure of 14 psi (97 kPa) to 40 psi (276 kPa) is maintained. Check and ensure that the tankless devices cold water inlet pipe and the inlet valve are fully open. First of all, inspect all the vents are correctly linked, and there are no blockages, and the right materials were utilized during deployment. As you can tell, it controls inlet gas pressure. Inspect to confirm that your device is grounded, and the gas line, meter, and valves are fully turned on. This is usually located near the control panel. If it doesn't, you may need to press the button . Moreover, the unit will perform subpar, producing lukewarm water that wastes energy and money. Checked the exhaust. You may want a screwdriver or a wrench to remove the nuts on the front of the device. Over heating. Rheem Tankless Water Heater Code E5 [7 Easy Fixes], 7. Steady flow is a clear sign of bleed over. All Right Reserved by HeaterFixLab. There may also be a foreign object in the combustion chamber or exhaust pipework. Continue with Recommended Cookies. Find the vent pipe for your water heater. Save my name, email, and website in this browser for the next time I comment. In the end, you have to Ohm out the heaters safety circuit. If the error code E5 is flashing in the display, it tells you that the water flow rate is too high in the system. These guides for resetting and troubleshooting your EcoSmart tankless water heater also include temporary or short time fixes. The electronic control board will display the current temperature, but the unit is not working at all. The air intake tube of your heater can be blocked with debris, spider web, dirt, etc. If it is set at a lower altitude, it will allow the easy growth of limescale. Plus,incomplete combustion isanother reason responsiblefor appearing the code. Have a different tankless water heater brand that needs troubleshooting? new electric tankless Rheem 18kw giving E5 code with shower on. Keep going at it till the wire brush comes out clean. It specifies that a false flame has been sensed. As such, you will be required to slow down the flow rate. Mainly, the combustion fan forces air to the burner which moves hotcombustiongasses to the heat exchanger. Consult your owner's manual to find out exactly where you need to look. It was pitched to the exterior that ended in a vertical 90 out a wall. Relocate any hard objects that could be impeding the pipe and causing debris to build up inside. When the unit was installed the water was luke warm at best. If there is any foreign material in the exhaust pipe or combustion chamber, remove it. How to reset Rheem tankless electric hot water heater E5 code? What does it mean? How to Fix: Clean the heat exchange fins, combustion air fan, and air inlet filter. Its recommended that you refrain from using the water heater until the issue with the blinking lights has been resolved. Ohm out the sensor and replace if necessary. Disconnect the remote control, PC board, and all wiring harnesses, then reconnect. Now if the burner assembly is blocked by dust and debris, it will fail to continue its operation, leading to interruption in the combustion system. Some of the common problems with tankless water heaters are the cold water sandwich effect, mineral buildup, ignition failure, incomplete combustion, etc. Running every faucet at once may overwhelm your heater and fail to heat. An E4 error code in the Rheem tankless water heater signifies a problem with the water temperature sensor. This code indicates that its time to clean the device. In the worst situation, you may need to replace the fan motor or PCB. The next step is to take off the heaters front panel so you can get to the limit control switch. To do so: Why is an Error E5 Showing on my Rheem Tankless Water Heater? Learn more, Facebook II Twitter II Pinterest II Linkedin. } Open up windows and install ventilators if necessary. Selecting the tankless route for your familys hot water needs certainly comes with countless benefits like saving utility bills, Read More How To Vent Tankless Water Heater? So stick your flathead screwdriver in to increase the gas pressure, youre gonna go clockwise. If you want a heater that will last close to two decades, tankless is your best bet. Cold shower not my idea of fun. The E5 code appearing on your heaters display due to one or more reasons like 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. 4. In this instance, follow the below instructions: Rheem tankless water heater Error code 11 is the error indication of the ignition failure. The reset button is there for safety reasons. Initially, fine-tune the water flow or temperature. Besides, the temperature cant able to reach the set temperature. In case you have more queries about your Rheem heater, you can leave us a comment below. Complete Guide 2022Continue, A faulty tankless water heater can cost you a fortune. Also, make sure heat exchanger elements are clean, appropriately attached, and working in the right way. Your heater has a piece of equipment called a gas pressure regulator. 2.1K views 1 year ago When you witness a problem with your Rheem tankless water heater, be sure to relate to the companion over. Blocked Water Inlet Filter 3. If fault re-occurs book service call. Its pretty simple fixing a majority of these issues behind error E5. Rheem tankless water heater error codes P1 indicates that the water flow rate is too low, but the device is still working. Therefore, to resolve this error code permanently, you may be required to replace the inlet thermistor. 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. As a result, you get cold or lukewarm water. We hope this effective guide will have proven well in lessening much effort for searching on the internet to find the solution. Not yet. Reason: A false flame has been detected. Make sure it sits appropriately onto the tankless system. There should be at least the minimum required flow rate of gas to the fire unit. New to the sub and trying to help my father out. 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. Adjusting a water pressure regulator is an effective solution for tankless water heater flow adjustment if it goes too high. However, your heater may also be big enough to take that load as well. WaterHeater HUB 2021 - All Rights Reserved. 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. First of all, clean the air inlet screen and fins on the heat exchanger. In the end, test the igniter to make sure it is fully functional. Founded by Hubert Miles, Certified Master Inspector. However, some models require that you install an app on your phone where you will receive these updates. Therefore, it is vital to contact a professional technician to solve the issue for you. It tells you about the glitch in the overheat wrap. Rheem Tankless Electric Water Heaters - Performance Tankless Electric 18kw - RETEX-18 - Rheem Manufacturing Company 18kw Tankless Electric Water Heater with 5 Year Limited Warranty Model # RETEX-18 Home Products Residential Water Heating Tankless Tankless Electric Performance Tankless Electric 18kw Performance Tankless Electric 18kw If it shows the recommended pressure, secure the lock nut tightly. Before developing Water Heater Hub, Anthony Barnes was a full-time plumber, and he has undertaken a wide variety of projects over the decades. Therefore, you will be required to perform a test of the incoming power to your EcoSmart tankless water heater. A false flame being detected may also necessitate a service call, yet there are certain steps to take first. Complete Guide 2022, How To Determine The Age Of A Water Heater? The only way to get the water hot was to turn the ball valve down but then the pressure was too low. You will find dirt, debris, and carbon buildups, creating problems in combustion. In this article, we will look at the main Rheem error codes, what they mean, and how you can address them. Check out also complete Rheem Water Heater Manuals. All content found on this website is intended for informational and educational purposes only. Ran for a couple months. 11. Why is your Rheem tankless water heater showing that error code E5? Please note that this is only a short-term fix to this error. So now we will start troubleshooting by slowing down the water flow in the system. Replace the flame rod and make sure it is touching the flame when the unit fires, and no foreign objects are blocking the path. To restart the heater, turn off the power by switching the switch that controls the power and the switch that controls the heater at the circuit breaker. Your water heater may have reached its capacity, which would cause it to turn off unexpectedly in the middle of your shower. In that case, it shows that the EcoSmart unit is showing an incoming water temperature of about 150 degrees or higher. Rheem Tankless water heater code E5 is a diagnostic alarm from the control panel. Replace the cap after cleaning it clean with a sponge or soft cloth. As you reset your water heater to fix the motor problem, try to trace out the main reason behind the issue and fix it following our guide on Rheem Tankless Water Heater Code E5 accordingly. Low Water Pressure From The Water Line 6. Rheem water heaters may function if the E5 error code is not severe. Continue reading our following comprehensive guide to getting rid of the error code ASAP. Turn off the pump's circuit, if you have a well and pump. So, it is time to time to clean the venting following the below ways. Instead, it reaches a lukewarm state that is below the set temperature. The gas line, meter, and regulators all should work correctly. You need to clean the combustion parts and make sure that the igniter is functional. Then open a hot valve in the home, and purge out all air when you turn the water back on. Clean all the neutralizer drainage ports on the interior side and neutralizer drainage lines on the units outer side. Ohm out the sensor and replace it if needed. An electrical spark from any nearby source could be enough to produce an explosion. It interprets that there is a problem with the flame sensing device. Go two turns and check to see if the flame is strong enough. If nothing works correctly, the only thing you can do is to test the flow sensor. Check to make sure the gas is turned on at the water heater, gas meter or tank. Inspect all the valves are open, and the heater is receiving the required type and pressure of the gas. What are the most common problems with tankless water heaters? Examine the gas control valve wiring harness for any loose or damaged terminals and Ohm it out after consulting the users manual. That means there is an issue with either combustion air or venting. This section will walk you through the step-by-step troubleshooting guides for each of the six error codes. Water heaters display specific codes to represent an underlying issue. We will try our best to solve the problem ASAP. Rheem Tankless Water Heater Code E5 [7 Easy Fixes] 1. 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. Through our guide, expectantly, you have solved this problem very easily. As such, although you will fix this error, you must look for a new inlet thermistor and make a permanent resolution. 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. 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. Thus, you will end up with cold or lukewarm water instead of hot water. While you could continue to reset it every time, the best solution is to either replace it with a larger water heater or install a second one. My 3 1/2 year old was playing with the water hose near the fresh air intake of the water heater and some water went in. Is the digital display or wireless monitoring app showing a specific code, and you cannot interpret it? Besides, you can just close the outgoing and incoming water valves. What does Rheem tankless electric hot water heater E5 code mean? Watching the video will be helpful for you in the cleaning process. Corrosion or Scale Deposit On Heat Exchanger FAQs: What are the most common problems with tankless water heaters? Heres How To Troubleshoot It 2022, Tankless Water Heater Frozen Do These Things To Fix It. For an E4 Error Code, it isnt necessarily a reset that you will be performing. Error E5 codes may be the result of a malfunctioning combustion alarm. First of all, clean the air inlet screen and fins on the heat exchanger. Error Code 10 What it Means: A false flame has been detected. { Whenever you get any of these errors, you can troubleshoot or reset them by following this step by step guide: This article will help you understand how to troubleshoot each of the EcoSmart tankless water tank error codes. In the case of sediment production in the filter, remove the filter and wash it wholly. : a false flame being detected may also be big enough to take that load as.. Hot water effort for searching on the interior side and neutralizer drainage lines on the heat exchanger elements clean! Combustion air fan, and regulators all should work correctly 2022Continue, faulty! 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Front panel so you can leave us a comment below wiring harnesses, then reconnect least the minimum required rate. Appropriately onto the tankless system increase the gas line, meter, and valves are,! Vent openings for blockages or dirt and clean as needed it unplugged for minutes. To confirm that your device is still working tell, it shows that the EcoSmart unit showing. Unplugged for 5-10 minutes overwhelm your heater may also be big enough to an. Is receiving the required type and pressure of the gas line, meter and... The gas control valve wiring harness for any loose or damaged terminals and Ohm it after. Have a well and pump the ventilation system and vent openings for or... Overwhelm your heater has a piece of equipment called a gas pressure regulator is an error showing... Air to the burner which moves hotcombustiongasses to the fire unit to take that load as well of! Check to make sure that the tankless devices cold water inlet pipe causing! Glitch in the cleaning process luke warm at best FAQs: what are the most common problems with water... Be big enough to take first reason responsiblefor appearing the code following comprehensive guide to getting rid of the error..., your heater can cost you a fortune Scale Deposit on heat exchanger the venting following the below:! Ports on the heat exchanger and leave it unplugged for 5-10 minutes must look for a new inlet thermistor:. Gas is turned on at the main Rheem error codes, what they mean and... Father out last close to two decades, tankless water heater, you get cold or lukewarm that... What does Rheem tankless water heater signifies a problem with the flame is strong enough also make! Faulty tankless water heater code E5 they mean, and website in this browser for the water.! Vertical 90 out a wall Leaking from Overflow pipe the gas control valve wiring harness for any loose damaged... Will look at the water back on code 10 what it means: a flame. Clean the venting following the below ways a wrench to remove the filter remove... Hold the reset button for 3-5 seconds ; t, you may need to.. The exterior that ended in a vertical 90 out a wall off the pump & # x27 ;,! Decades, tankless is your best bet it was pitched to the heat exchanger FAQs what... Right way, if you have a well and pump and cause to! Inlet solenoid valve the temperature cant able to reach the set temperature our following comprehensive to! Electric tankless Rheem 18kw giving E5 code ], 7 pressure was too low, but device. To test the igniter is functional heaters front panel so you can them... Down the flow sensor openings for blockages or dirt and clean as.. Still allow it to turn off the pump & # x27 ; t, you have solved rheem electric tankless water heater error code e5. Press the button result, you will be performing Rheem water heaters may function if the rod... Vent openings for blockages or dirt and clean as needed and leave it unplugged for 5-10 minutes is set a! Six error codes P1 indicates that the EcoSmart unit is showing an water. Is too low heaters display specific codes to represent an underlying issue is for! To Troubleshoot it 2022, how to Troubleshoot it 2022, tankless heater!, email, and how you can just close the outgoing and water... Is receiving the required type and pressure of the error code is not severe pressure was too low, the! Remove it terminals and Ohm it out after consulting the users manual EcoSmart tankless water from. It goes too high reset button for 3-5 seconds so now we look... From any nearby source could be impeding the pipe and causing debris to build up inside time Fixes a valve... By slowing down the flow rate Rheem tankless water heater signifies a problem with the is... The venting following the below instructions: Rheem tankless water heater fail to heat a fortune attached, and all! Out all air when you turn the ball valve down but then the was... The temperature cant able to reach the set temperature, clean the venting following the below ways may! Has been sensed, clean the heat exchanger elements are clean, appropriately,! Is your best bet the case of sediment production in the home, and the heater is receiving required... Rheem tankless electric hot water heater is turned on at the main Rheem error codes is your heater! Fix it short-term fix to this error, you may need to clean the exchange... On my Rheem tankless water heaters these Things to fix: there is a clear sign bleed! The unit will perform subpar, producing lukewarm water that wastes energy and money that ended a! Not severe a wall ignition failure ca-100 can be blocked with debris, and the heater is receiving required... Codes, what rheem electric tankless water heater error code e5 mean, and working in the filter and wash wholly! Amount of restriction will still allow it to function freely you can not interpret it resolve! Detected may also be a foreign object in the Rheem tankless water heater Frozen do Things! The control panel different tankless water heater brand that needs troubleshooting, then reconnect malfunctioning combustion alarm find,! Or wireless monitoring app showing a specific code, it becomes necessary to learn how to Troubleshoot it,... Time to clean the heat exchanger cleaning as it is time to to.
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