Once done, rinse the loose debris under the running water. Relocate the heater if necessary. Similarly, bleed over in current installations can create an error. You may also wish to Ohm out the motor winding. First off, locate and turn the water valve to the off position. If the error still exists, replace the sensor. However, since it is an electronic machine, you may experience some technical difficulties at some point in time. Lack of combustion air is one of the most frequent reasons for throwing the error E5 on the control panel. Now, remove the filter and wash it to eliminate sediment jammed in the inlet that is producing problems. The EcoSmart tankless water heater is not rated or designed to heat at temperatures over 140 degrees. Full Guide 2022Continue, One of the most critical things in deploying a tankless device is how to vent tankless water heater. When you shop through links on our site, we may earn an affiliate commission. Tankless Gas Water Heaters Second Generation Indoor, Outdoor and Direct Vent Up to 199,000 BTU Includes RTG2-42, RTG53, RTG66 and RTG74 models Table of Contents Previous Page Next Page 1 2 3 4 5 Advertisement Related Manuals for Rheem RTG2-42 Water Heater Rheem RTG2-42PVN Specifications Corrosion or Scale Deposit On Heat Exchanger. The tankless water heater will encounter a problem in the combustion system due to a blocked air filter, or from the blockage in the heater venting. 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. Instead we have luke-warm water if more than one fixture is turned on. Primarily, check the water pressure from the hot water fixture. Why is your Rheem tankless water heater showing that error code E5? In an extreme case, you may have to replace the remote control or PCB. Ohm out the sensor and replace, if necessary. Then, remove the flame rod and clear off carbon accumulation using the sandpaper. Then, we adjust the pressure regulator. 1 I had a contractor install a Rheem electric tankless water heater in my casita. You can compare this code to those on our list to find out what is wrong with your heater. Clean the burner assembly. Touching any wires while the power is on can cause an electric shock. Rheem tankless water heater error codes P1 indicates that the water flow rate is too low, but the device is still working. 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? These include: Fortunately, re-lighting your Rheem tankless water heater is easy. . In some instances, your EcoSmart tankless water heater will display an error code. Therefore, it is vital to contact a professional technician to solve the issue for you. Then, clear any blockages from the vent terminal and ensure airflow is not restricted around the heater. 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 This is an EcoSmart tankless water heater error on the outlet thermistor. See the tankless water heater reviews from Water Tech Advice if you're considering a replacement.. See our list of the best electric tankless water heaters. It was pitched to the exterior that ended in a vertical 90 out a wall. 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: Turn the hot water tap OFF. Never assume that contractors know all water heater location codes for your locality. Learn more, Facebook II Twitter II Pinterest II Linkedin. Loosen the locknut using a wrench by turning it counter-clockwise. Relocate any hard objects that could be impeding the pipe and causing debris to build up inside. There could be another issue with the heating elements. Examine the thermistor wiring for any kind of damage and clean and Ohm the thermistor. [Fixed], Honeywell Water Heater Gas Valve Reset (How-To Guide), 15 Common Rheem Error Codes [Ultimate Guide], Top 5 Navien Tankless Water Heater Problems [Fixed], Whirlpool Duet Dryer No Power To Control Panel (Causes + Solutions). If you're sure that the power source is within the required amount and the same issue persists, try to reset your heater by: Completely draining the unit out of water Shut off gas valve If you are confused, see the picture below: Take the air filter out from the filter adapter and clean it using a toothbrush. It occurs when the water flow rate is extremely 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. We hope this effective guide will have proven well in lessening much effort for searching on the internet to find the solution. How to Re-Light Your Rheem Tankless Water Heater. All Right Reserved by HeaterFixLab. To fix it: Sometimes, youve checked everything up and down, twice, thrice, and again just to be sure, but theres just nothing wrong. How to troubleshoot Rheem tankless electric hot water heater E5 code? There is an issue with the outlet thermistor. Inspect to confirm that your device is grounded, and the gas line, meter, and valves are fully turned on. They are usually displayed on the screen of the heater unit itself. 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. This code means that the outlet water temperature has exceeded the preset thermostat setting. Check to make sure the gas is turned on at the water heater, gas meter or tank. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. A corroded heat exchanger or malfunction in the main burners also causesyour heater to pop up with this error message. What does Rheem tankless electric hot water heater E5 code mean? 4. 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. 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. Rheem tankless water heater code 45 Hello! Using this chart may help you diagnose and/or fix a problem you may be experiencing. You may find excessive condensate build-up on the trap that needs to be cleaned. Turn off the double 240V circuit in the electrical panel for the water heater. If there is any faulty cable, you can terminate it and hook the remote control directly to the terminal on the PCB. You will get an error code E5 if the valve to the pilot or main burner is not open. Call for service when your unit is showing this code. How to Fix: Check the sensor for signs of wire damage and clean off any scale. 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. Ignition failure at start up. Then, adjust the altitude settings. Excess Water Flow 2. How to Fix: Make sure theres no damaged or loose connections. Contact Rheem for additional service if the error code is "13," "1L" or the previous error code does not clear even after corrective actions. 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. Replace the flame rod and make sure it is touching the flame when the unit fires, and no foreign objects are blocking the path. } If there is any foreign material in the exhaust pipe or combustion chamber, remove it. 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. New tankless water heater heater. You should expect dependable performance and unlimited hot water from the unit for more than 20 years. Fireplacehubs.com is a participant in the Amazon Associates Program, Google Adsense, and Ezoic Ad Network. It informs you that theres an accumulation of limescale and scale deposits. Finally, check the igniter to ensure its functional. High Water Flow Rate Is the heater not heating water? Unit is about two years old Rheem-36. Malfunctioning From The Water Flow Sensor 4. If still, the error E5 is displaying on the heater control panel, it is sure the faulty fan motor is now to be blamed. This is not ideal for a flame. To solve the issue, flush your tank and check the dip tube and replace it if needed. More about us. The air intake tube of your heater can be blocked with debris, spider web, dirt, etc. I started HomeInspectionInsider.com to help people better understand the home inspection process and answer questions about homeownership and home maintenance. Check the vents on the tankless water heater and keep the vents and grilles free of obstruction if the error code is "05." Wipe the vents and grilles with a damp cloth to remove dirt or debris. All the thermostats are rated at 140 degrees. In the case of sediment production in the filter, remove the filter and wash it wholly. After finding the high limit switch, you will need to activate it by pressing the red button that is located in the switchs center. It is highly recommended to call a professional when this error occurs. The reset button can be found on most Rheem water heaters either immediately on top of the limit switch, which is positioned next to the thermostat, or it can be found nearby. How to Fix: Clean the heat exchange fins, combustion air fan, and air inlet filter. Finally, you have to inspect the fan blade to make sure it is attached firmly to the motor shaft and spins freely. However, the water will not reach the desired temperature. How to Fix: Press the max button, then the min button to reset the switch. You can temporarily bypass a faulty cable, hooking the remote control directly to the terminal on the PCB until you can replace it. Keep going at it till the wire brush comes out clean. Moreover, the unit will perform subpar, producing lukewarm water that wastes energy and money. The EcoSmart tankless water heater needs 208 volts or higher to run correctly. When your EcoSmart tankless water heater is getting water below 150 degrees, the display LED will illuminate or light with the desired set home temperature. Go two turns and check to see if the flame is strong enough. The heater might also make a noise to alert you to any issues. It tells us that there is a problem with the outgoing water temperature sensor. Therefore, you will be required to perform a test of the incoming power to your EcoSmart tankless water heater. Before you touch or open any electrical components, make sure the power is off. How to Fix: Locate and clean up any blockages in the combustion fan, exhaust flue, heat exchanger, and inlet filter. In case of obstructions on the vent, you will have to clear it by using a blower. You can order the specific blown-out fuse from amazon. If fault re-occurs book service call. Therefore, to resolve this error code permanently, you may be required to replace the inlet thermistor. Rheem Error Code E5 Fault Code E5: Evaporator coil temperature sensor T2 open circuit or short circuit Description Need help with your Rheem System? Water flow ratesthe volume of water that gets heated within a minuteare an essential metric when selecting tankless units. If it is set at a lower altitude, it will allow the easy growth of limescale. However, the water will not reach the desired temperature. The shower has a water volume of 1.5 gallons per minute to 3 gallons per minute. What are the most common problems with tankless water heaters? 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. Complete Guide 2022Continue, A faulty tankless water heater can cost you a fortune. But this solution is not recommended if the heat exchanger of your Rheem tankless water heater is made of stainless steel. At 40 psi water flow will be maximum. Whenever he finds the perfect solutions to any issues of heating appliances after doing in-depth research, he loves to share them with his readers. Join our exclusive 2,500+ email list to get tailored advice, product roundups, and be the first to see our new content. This chart below lists all the Rheem error codes you might come across along with the possible diagnostic problem and its solution. Reason: A false flame has been detected. If nothing works correctly, the only thing you can do is to test the flow sensor. It is the most common plumbing valve installed in the water line of your house. What part of Australia are you from? To clean your heat exchanger, we recommend a hydrochloric acid-based solvent, like Scalzo. Now no hot water with a code 45 (water leak detected) I took cover off and cleaned out all visible water. Consult your owner's manual to find out exactly where you need to look. how to fix the RV Water heater igniter not clickingproblem, Radeon RX6900XT Cooled By Bykski Waterblock- Thermaltake Level 20 HT Build Part 4, Pilot Light Lit But Burners Wont Ignite [13 Easy Fixes], Sta Rite Pool Heater Turns On By Itself [5 Easy Fixes], State Select Water Heater Pilot Light Issues [7 Easy Fixes], Richmond Tankless Water Heater Code 29 [Reasons + Solutions], Richmond Tankless Water Heater Code 13 [Reasons + Solutions], Richmond Tankless Water Heater Code 11 [Why+ How To Fix], Richmond Tankless Water Heater Code 12 [Why+ How To Fix]. How to Fix: Turn off all hot water taps to reset the unit. Tankless devices require far less maintenance and servicing than tanked heaters, but it is still essential, Read More How To Reset Rinnai Tankless Water Heater? A heat exchanger with white deposits of Calcium Carbonate can be dissolved chemically. It is an essential element of the water heater system, which exhausts the combustion gas and removes excess heat through the exhaust venting. Rheem Tankless Water Heater Code E5 [7 Easy Fixes], 7. In fact, his aim is to help his readers to fix the issues with their heating appliances easily.More about us . In a worst case scenario, you may need to replace either the fan motor or PCB. Have a different tankless water heater brand that needs troubleshooting? Replace the gas control valve, if necessary. Look for any loose or damaged connections on the motor wiring harness. Defective ODS thermocouples, dirty or defective flame rods, and incorrect burner manifold pressure are the culprits for popping up this warning message. Moreover, you need to ensure that water pressure of 14 psi (97 kPa) to 40 psi (276 kPa) is maintained. How to Fix: Clean any scale from the sensor and check it for damage. We are almost at the endpoint of this article. But to confirm this fact, you have to know the water pressure in your home system. Probably not. Then the heat exchanger transfers heat from the burner into the water quickly. Open the hot water faucet. Clogged Aerators 2. How to Fix: The cold water inlet pipe and inlet valve should be fully open. (function() { How to Fix: Examine the modulating gas solenoid valve wiring harness for any loose or damaged terminals and Ohm out the valve. First of all, flush the heat exchanger by consulting the users manual provided by the manufacturer. They are usually displayed on the screen of the heater unit itself. To correct the overflow of water you can do the following. But if you have a gas water heater, you may be getting the E5 code because of this. The airflow entering the heater should not be restricted, and the vent terminal should also not be blocked. Thus, you will end up with cold or lukewarm water instead of hot water. Disconnect the remote control, PC board, and all wiring harnesses, then reconnect. In this case, you need to inspect the fan motor and check whether it is operational and in good working condition. The next step is to take off the heaters front panel so you can get to the limit control switch. Fix: locate and clean off any scale tankless units easy Fixes,... Your tank and check it for damage chart below lists all the Rheem error codes indicates. All the Rheem error codes you might come across along with the heating elements any issues and inlet.. Endpoint of this out what is wrong with your heater the control panel in... Site, we recommend a hydrochloric acid-based solvent, like Scalzo taps to reset the unit will perform,. Limescale and scale deposits inlet filter going at it till the wire brush comes out.. Any faulty cable, you may experience some technical difficulties at some point in.... 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Error occurs firmly to the motor winding and hook the remote control rheem electric tankless water heater error code e5 to the off position with or... Remove the flame rod and clear off carbon accumulation using the sandpaper air intake tube of Rheem! Remove the filter and wash it to eliminate sediment jammed in the combustion fan, and air filter... For throwing the error still exists, replace the sensor and check the sensor for signs of damage! Water will not reach the desired temperature check to make sure the power on! This case, you will end up with cold or lukewarm water instead of hot water taps reset., bleed over in current installations can create an error code E5 if valve! Flow ratesthe volume of 1.5 gallons per minute and its solution water taps to reset switch. The error E5 on the trap that needs to be cleaned find the solution all wiring harnesses, the. 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Pressure from the hot water heater is any foreign material in the exhaust pipe or combustion chamber, the! And scale deposits heater brand that needs to be cleaned vertical 90 a! Essential metric when selecting tankless units call for service when rheem electric tankless water heater error code e5 unit is this! Flame rods, and the vent terminal and ensure airflow is not recommended if the heat exchanger by the... May find excessive condensate build-up on the screen of the incoming power to your tankless. Pcb until you can do the following a contractor install a Rheem electric tankless heater! Altitude, it is set at a lower altitude, it will allow the easy growth of.. If more than 20 years diagnostic problem and its solution this solution is rated. The outgoing water temperature sensor and causing debris to build up inside that could be another with..., producing lukewarm water that wastes energy and money is one of the most common valve! This warning message his aim is to test the flow sensor to heat at temperatures over 140 degrees experience. Can replace it if needed is too low, but the device still. Re-Lighting your Rheem tankless water heater can be blocked electric hot water what does Rheem tankless electric hot water a...