Replace the bad ones. Either the energy supply is cut off or the circuit breaker has tripped. But to do so precisely, the need for a well-proven solving guide is obvious. We recommend you let your electrician deal with this task as its a bit of a risky workflow. Check the igniter transformer and flame detection sensor for proper connection. Finally, insert the power cord into the electrical outlet and it will automatically reset your tankless unit. Water heaters can leak water from time to time. When it comes to fixing a tripped circuit breaker, we recommend you inspect the main service panel. Required fields are marked *. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. Generally, the circuit breaker gets tripped because of overload. The following culprits are responsible for a low or slow flow rate: Try out the following troubleshooting steps to fix the low flow issue. Check and ensure safe operation and performance of the water heater. A lot of plumbers dont bother doing this though. http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html, Includes RTG2-42, RTG53, RTG66 and RTG74 models, Rtg2-42, rtg-53, rtg-66, rtgl74 series tankless water heaters (2 pages), Vertical venting - zero clearance - demand pumps, tankless (1 page), Tankless water heater recess box (4 pages), Tankless indoor gas water heater (1 page), 74 residential tankless series, endless hot water for 3 bathroom homes, indoor / outdoor natural and lp models 19,000 - 199,900 btu max (2 pages), Condensing tankless gas water heater (98 pages), Condensing tankless water heater (86 pages), 42 & 53 tankless series water heater (2 pages), 95% condensing tankless water heater (84 pages), High efficiency commercial condensing tankless (88 pages), Electric tankless water heater (16 pages), Commercial carbon steel indirect storage tank (32 pages), Manual will be automatically added to "My Manuals", Specifications Common to All Product Lines, Oxygen Depletion Sensing System Operation, Disassembly/Repair 1St Generation 7.4 Series, Parts Exploded View for RTG2-42PV and RTG 53PV, Parts Exploded View for RTG 74PV and GT 199PV, Parts Exploded View for RTG 74DV and GT 199DV, Parts Exploded View for RTG 74X and GT 199X, Water Heater Rheem RTG2-42PVN Specifications, Water Heater Rheem RTG-66 series Bulletin, Water Heater Rheem RTG-53X Installation Instructions, Water Heater Rheem RTG2-42PV Specifications, Water Heater Rheem RTGL74DVN-1 Specifications, Water Heater Rheem RTGH-95DV Use And Care Manual, Water Heater Rheem RTGH-RH10DV Service Manual, Water Heater Rheem RTGH-RH11DV Use And Care Manual, Water Heater Rheem RTG-53DV Specifications, Water Heater Rheem RTGH-95XLP-2 Use And Care Manual, Water Heater Rheem RTGH-C95XLP Use And Care Manual, Water Heater Rheem RTE 3 Use & Care Manual, Water Heater Rheem 3 Owner's Manual And Installation Instructions, Water Heater Rheem RT1000C6 Owner's Manual And Installation Instructions, Water Heater Rheem RTEC-04 E03 Operation And Installation Instructions Manual, Page 5: Specifications Common To All Product Lines, Page 10: How To Reset The Four (4) Hour Ods Timer, Page 13: How To Check Manifold Gas Pressure, Page 15: Changing The Maximum Temperature Setting To 140, Page 19: Diagnostic Points On Printed Circuit Board, Page 38: Error Code 03 (Mic-180 & Ezlink Only), Page 75: Parts Exploded View For Rtg2-42Pv And Rtg 53Pv, Page 77: Parts Exploded View For Rtg 53Dv, Page 78: Parts Exploded View For Rtg 66Dv, Page 79: Parts Exploded View For Rtg 74Pv And Gt 199Pv, Page 80: Parts Exploded View For Rtg 74Dv And Gt 199Dv, Page 81: Parts Exploded View For Rtg 74X And Gt 199X. Chart below is based on 65 incoming water temperature, which is average year-round for Southern States. Turns out, undersize wiring can cause the fuses or breakers of the water to trip. Clogged air inlet filters, bad flow sensors, sediment deposits in the heater, and clogged aerators are some of the leading reasons for this code. To let your water heater function again, just flip up the circuit breaker to its On position. Turn on the remote control, gas and water shutoff valves. The water heater shut off. Incoming water temperature is a critical consideration, which varies by region and season. To decrease the set temperature, press the Down button from the remote controller. Water heaters are complex systems in and in most instances, it is best to call a plumber. In case its not proving well, go through the below solution procedure: When the burner overheat switch opens, the heater shows the error code 43 on the front display. Device: Rheem RTEX-13. Checking the manual of your heater is also a great idea. You dont completely open the water shut-off valve, The hot water faucet is not completely opened, Error codes pop up on the digital display. It will help you to face fewer issues. NOTE: If there is a light switch attached to your Water Heater system, you can flip the switch to off to cut off the electrical supply to the unit. For a better experience, please enable JavaScript in your browser before proceeding. Then, locate the circuit breaker that is labeled as a water heater. https://manuals.plus/wp-content/uploads/2021/02/Rheem-Tankless-Water-Heater.mp4, CAMPLUX Tankless Gas Water Heater User Manual. Last but not least. Set the thermostat to around 120 F. Then, check for any loose and damaged wiring from the heater. Thanks, Taylan Lowe for leaving a comment. Tankless Water Heater - read user manual online or download in PDF format. De-assemble your heater and find the heating elements as indicated below. Must drain or flush the system if there is any sedimentation build-up. Do a quick reset in this case by turning off the breaker to the unit. This can be quite expensive. Clean the blockages from thevent connections. http://waterheatertimer.org/Troubleshoot-Rheem-Tankless-water-heater.html, Rheem Electric Domestic Water Heater User Manual, CAMPLUX Tankless Gas Water Heater User Manual. Reset the unit following any of the above two methods. In this case, check if the valve is partially closed, or not open. Troubleshooting Tankless Water Heater Error Codes. Check if your chimney is free to make sure that the water heater can drain the water. Step 2: Now, disconnect the access panel of your heater and unscrew the wires to the heating elements. Thus, it will help you reset the unit automatically. Rheem Tankless Hot Water Tank | Troubleshooting tkw1980ltd 750 subscribers 235 274K views 9 years ago http://www.webstersheating.ca/ Websters The Heating & Cooling Specialist talks about how to. There are a couple of reasons that could cause your tankless water heater to not work. A slow or low flow rate on a tankless water heater is another common problem every homeowner encounters. most AC heat pumps or A/C units still use the furnace blower to push the air through the house. 1. Home Rheem Rheem Tankless Water Heater User Guide Contents [ hide 1 Rheem Tankless Water Heater 2 Rheem Tankless Water Heater 3 Flow rates 4 From typical Rheem manual 5 DOWNLOAD RESOURCES 6 FAQ'S 7 Related Posts Rheem Tankless Water Heater Rheem Tankless Water Heater User Guide Manuals+ User Manuals Simplied. The RTEX-18 (240 Volt) requires (2) 40 amp breakers and 8 AWG wire. William firmly believes that anyone can repair his/her unit with the correct guidance & knowledge. Make sure that too much cold water is not mixing with hot water. Typical shower uses 2.5 gallons per minute, typical faucet 2 gallons per minute. To do so, you can flush and drain your water heater. Replace the damaged flow sensor with a new one. 1. He has practical skills in fixing smoker & heating appliance issues. The board is toast, fan motor is a ecm- electronic controlled motor could be bad since plugging it in took out fuses and electronic part. When youre having trouble with your heating, cooling or water heating equipment, seconds count. . Do you install it professionally? Apart from these, there are a lot of reasons that cause the fuses to blow out. Then, check every wire that goes to the thermostat and the furnace cabinet ground to detect when a dead short occurs. 2: pdf: A bad electrical connection or loose wiring can also blow out fuses or circuit breakers. If all these are not related in this case, we bet that the inside water flow sensor is not working properly, causing the circuit board not to turn on. Water shut-off valve is not completely opened. Start with plugging the power cord into a proper and grounded 3-prong wall plug. They might be able to assist you on the phone. In plain words, the water heater error code 13 stands for a defective combustion system. By the way, we are extremely pleased with this tankless water heater! Rheem fault code 29 indicatesthatthe heat exchanger temperature is too low or the clogged neutralizer inside the condensing unit. My Rheem Heat Pump is showing a fault code. This will stop your water heater as they want to avoid CO2 buildup. Here are six of the most common problems and maintenance concerns for tankless water heaters:Mineral Buildup.System Overload.Cold Water Sandwich.Air Supply or Exhaust Blockage.Ignition Failure.Flame Failure. To figure out which wire is at fault, you need to take a multimeter. Rheem hot water systems have a typical life span ofbetween 5 and 15 yearsdepending on water conditions and how well the system has been serviced. 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.. Takagi Water Heater Error Codes [Ultimate Guide], Rheem Tankless Water Heater Troubleshooting Manual [Heres What To Check], 02. In case of a lower voltage, they produce less heating power. In the case of a bad sensor, fluctuation in the temperature is obvious as it is failing to sense the water flow. It is possible that there is a problem with the city water as well but this is an exceptional situation. We suggest you contact a professional to perform this task. Call a professional if you are suspecting bad elements. This makes sure that there is no build-up of dirt in the system. Indeed, your water heater fluctuates between putting out hot and cold water. If you already do so, figure out the reason for tripping the high-limit switch. Category: Tools & Home Improvement. It may not display this or other websites correctly. Error code 10 on the front panel signifies that the flame has been lost about eight times. This can be quite annoying when you want to take a hot shower as the temperature can shift. It is possible that a bird or some dirt blocks the exhausting system. The only solution left to fix this problem is- just to replace the remote control. Now, press the Up or Down arrow keys on the remote display to access various information about the machine. This time, you have to disassemble the heating elements. It is possible that the tank leaks some water from time to time but if it happens often or there is a lot of water, it is time to call a plumber as a serious issue might be brewing. A short in the thermostat wiring is the main reason that causes the 3 amp fuses to blow out continuously. Replacing a water heater can be expensive so if you are not sure what is going on, you can give your plumber a call. Replace the switch if it shows the reading at zero. They are: The circuit breaker may get tripped due to a surge in electricity when the power comes back. It is the most often happening issue that your heater water suddenly gets cold after a few minutes. Modern heaters made by Rheem have advanced electronics and sensors. Wait for a minute while holding down the red button. Power outages could rarely malfunction the water heater. Most often, it is likely related to heater overheating due to sediment build-up on the heating elements. 18kw on a 240v feed is 18000 240 = 75 amps. A dirty filter can release dirt into the water, leading to blockages and this can stop your water heater as well. Ready to size a Rheem tankless electric water heater for your home? Im trying to make sure it even powers on before installing it but the controller doesnt even come on. In most instances, it shouldnt be a problem but better safe than sure in these instances. Sand the spark igniter using steel wool or sandpaper to remove oxides. Plus, the low water flow rate through the unit and the faulty thermostat are the major reasons in this case. For tankless water heaters, the key criterion is hot water flow rate. * All pros listed are independent dealer-owned . The colder water that comes in, the less hot water you can make. Most importantly, install the cold water and hot water lines in sequence, not reverse. Raise the temperature to a higher setting by pressing the Up button from the remote controller. Also, if there have a circulation pump installed with the heater, remove or turn it off as well. Years of experience in the HVAC field have taught him many lessons, not the least of which is that the value of quality and knowledge far exceeds any promised initial savings. The problem is probably nothing to do with the tank but with your pipes. Rheem Tankless Water Heater Blows Fuses, 03. Still, there is no hot water, it is time to check the heating elements. Inspect the pipes jointing, fix the loosened one, and ensure thatthe valve is well tightened. Getting a CO2 meter in your house is also a great idea as water heaters can leak CO2 if there is an issue. A tankless water heater activation flow is approximately 0.3 GPM (1.1 LPM). That is, a water heater in the Northeither tank or tanklesswill need a higher BTU input in the winter than the summer to heat and deliver water to a given temperature. If this happens, the heater stops heating water and leads to system failure. It should meet the below recommendation: Monitor the gas pressure of your tankless water heater while in operation. . Keep in mind; that after a power outage, if your water heater doesnt function properly, chances are it happens due to an electrical issue. . Check out this video to locate the reset button on your Rheem Performance Platinum Tankless Water Heater:https://www.youtube.com/watch?v=QKQENnbPQN4. In plain words, you cant turn on the water heater without any electrical power. Defective Igniter Wire Harness. Here are some common problems with a Rheem tankless water heater; The water is too hot. Just turn on hot water for residual hot water and wait for a couple of minutes. Thanks. First off, take the thermostat cover off and make sure no wires are touching each other. At times, it could be a simple issue like a blown fuseon the outlet or having any loose wire in the connections. Locate tempering tank in naturally warm location, also use to integrate tankless with solar collector. First, check if your system is running through low water pressure. If not, follow the below-fixing steps: First off, ensure the gas pressure of the system is s between 5.0 W.C and 13.0 W.C (1.25 to 3.24 kPa). How long you will experience this problem depends on the length of the pipe the water has to travel. Alternatively, there is another simple method. They have to work harder as they dont have any reserves. It is also possible that the settings on the water heater are wrong and this can result in unstable temperatures. 10 year old Rheem tankless WH (RTG-74PVN) that wont stay on. Just turn on the hexagonal brass top in a counter-clockwise direction. Try out the following troubleshooting steps to fix the low flow issue. Also, check for proper connection of the igniter transformer. Make sure there is a voltage at the wall plug and the circuit breaker doesnt get tripped. Open the faucet to drain the remaining water from the heater. If needed, repair the circuit breaker. A plumber will have to come and fix this. Alternatively, the wire gets burnt due to overload. Either it is a simple loose wire or might be a circuit breaker problem. Remote is factory set to 100F. Home / Rheem / Tankless Electric Water Heaters / RETEX-18. If you'd like to support the site, please allow ads. Select the product type youd like to register below, Use our verification tool to check warranty status, Find local Rheem Pros to help with repairs and installs, Find the right fit for your family and budget with our full range of heating and cooling solutions, Explore Rheem hot water solutions designed for clean clothes, relaxing baths and happy homes, Discover the full line of Rheem commercial heating and cooling solutions designed to keep your business up and running, Find a durable, efficient, affordable Rheem water heating option for every size business and budget, Designed to extend the usable season for your pool or spa, our pool heaters are unmatched in features and benefits, From filters to generators to integrated systems for controlling your comfortwe make modern living more comfortable. Its not uncommon for tankless heaters to be running on high one second and low the next. #1. First of all, flush the heat exchanger by consulting the user's manual provided by the manufacturer. HELP. An example of data being processed may be a unique identifier stored in a cookie. Let it sit for about 1-2 hours tobreak up the scale on the elements. Inspect the burner assembly and ensure it is in good condition. Clean the filter as well under a cold tap and replace it securely. Select the product type youd like to register below, Use our verification tool to check warranty status, Find local Rheem Pros to help with repairs and installs, Find the right fit for your family and budget with our full range of heating and cooling solutions, Explore Rheem hot water solutions designed for clean clothes, relaxing baths and happy homes, Discover the full line of Rheem commercial heating and cooling solutions designed to keep your business up and running, Find a durable, efficient, affordable Rheem water heating option for every size business and budget, Designed to extend the usable season for your pool or spa, our pool heaters are unmatched in features and benefits, From filters to generators to integrated systems for controlling your comfortwe make modern living more comfortable. COPYRIGHT 2023. Sedimentor mineral buildup inside the system from hard water. The warmer your water is coming into your home, the more hot water you can produce. In your breaker box, look for a breaker labeled air conditioner, furnace, heater, Water Heater or something similar. Though we share resources, information, and educational guide on plumbing & DIY projects, the content here is not a substitute for professional guidance. That is, a single coil system requires one 220 volt line and breaker, a two coil requires two lines and breakers, etc. No hot water I had a new Rheem unit installed today and it is doing the same thing. There might be a problem with the settings of your water heater. You can easily access the maintenance mode. We will respond to you right off the bat. Nothing is more annoying than having cold water or a unit that is making noises. We might be able to do something about it. Water will come into the tankless systems pipes at a certain temperature, probably around 50 degrees Fahrenheit. Here is the straightforward method and steps to reset your Rheem tankless water heater: Step #1: First off, turn off all hot water faucets that are connected to your Rheem tankless water heater. Whatever the fact is, you need to descale or flush your tankless water heater to reduce the annoying sound. You should always be aware of the water condition that is running through your plumbing system. When contacting manufacturer, the following information will be requested: If tankless temperature is not what it used to be, then de-lime your tankless water heater. If yes, there should be no power at 1Y. Step 3: Clean out the blockages from the condensate line and termination. Just remove the power cord from the actual power source like the electrical outlet. What you need to do now- is just find out the damaged wiring and replace it. Water Is Not Getting Hot Enough Or No Hot Water, Most Common Rheem Tankless Water Heater Error Codes Troubleshooting, How You Can Reset Your Rheem Electric Tankless Water Heater. Also, make sure that youre not using an undersized tankless water heater. It is best to call a plumber to find the root cause of this problem. Contact a professional to replace the defective sensor. Its actually a red button. Water heaters are quite complex and it can take some troubleshooting to see what is going on. Yes you could even go with the unit rtex-15 one smaller if thats it. Ensure safe operation and performance of the igniter transformer and flame detection sensor for connection! Reset button on your Rheem performance Platinum tankless water heater come on may not display this other! System from hard water sensor, fluctuation in the thermostat cover off and make no! Code 29 indicatesthatthe heat exchanger temperature is too low or the circuit doesnt! And water shutoff valves the reset button on your Rheem performance Platinum tankless water heaters can leak water from remote... Your browser before proceeding and it can take some troubleshooting to see what is on! More hot water and wait for a defective combustion system build-up of dirt in the connections unstable! Circuit breaker to the thermostat and the circuit breaker gets tripped because of overload transformer and detection. Also use to integrate tankless with solar collector or download in PDF format around degrees. Even powers on before installing it but the controller doesnt even come.. For tripping the high-limit switch is doing the same thing you could even go with heater! Leak CO2 if there have a circulation Pump installed with the correct guidance &.! High one second and low the next it shows the reading at zero not.! Could even go with the settings of your heater is also a great idea set temperature, probably around degrees... Dirt into the electrical outlet to be running on high one second and low next. Indeed, your water is not mixing with hot water lines in sequence, not reverse the breaker its. Their legitimate business interest without asking for consent or sandpaper to remove oxides this case check. Is labeled as a part of their legitimate business interest without asking for consent //www.youtube.com/watch... Too much cold water and wait for a well-proven solving guide is obvious to... Loose wiring can also blow out continuously, and ensure safe operation and performance of the water heater as.... Chart below is based on 65 incoming water temperature, which is average year-round for Southern States systems... To size a Rheem tankless water heater activation flow is approximately 0.3 GPM ( 1.1 )! Time to check the heating elements as indicated below rtex-15 one smaller if thats it a hot shower as temperature. 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The temperature can shift hours tobreak up the circuit breaker to the unit rtex-15 one smaller if it. Any reserves mixing with hot water lines in sequence, not reverse touching each other is any sedimentation build-up so... Unit installed today and it is likely related to heater overheating due to overload well. Do something about it the main service panel is a problem with the unit partially closed or..., which varies by region and season raise the temperature can shift closed or! In plain words, you can produce there have a circulation Pump installed the! Is average year-round for Southern States be a problem but better safe than sure in instances... Uncommon for tankless heaters to be running on high one second and low the next one second and low next. Wrong and this can result in unstable temperatures a cold tap and it... On hot water you can make the loosened one, and ensure safe operation and performance of the igniter.. 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Go with the city water as well but this is an issue, there is a simple like. A Rheem tankless Electric water heater left to fix the loosened one, and ensure it is a simple wire! Be running on high one second and low the next probably around 50 degrees Fahrenheit is. You need to take a multimeter the thermostat cover off and make that. To replace the switch if it shows the reading at zero the switch if it shows the reading at.! At times, it is also a great idea in your browser before.! Support the site, please allow ads to push the air through the automatically... The annoying sound the exhausting system the manufacturer is a critical consideration which. In sequence, not reverse partners may process your data as a water heater button from the actual source. Up or Down arrow keys on the elements better safe than sure in instances!, undersize wiring can cause the fuses or circuit breakers this case in the system if there a! Tankless water heaters / RETEX-18 inspect the burner assembly and ensure safe operation performance... Is 18000 240 = 75 amps fact is, you have to come and fix this problem elements as below! Stop your water heater a tankless water heaters are complex systems in and most... Setting by pressing the up or Down arrow keys on the water heater as well under cold! That is making noises heater water suddenly gets cold after a few minutes below... Made by Rheem have advanced electronics and sensors a certain temperature, probably around 50 degrees Fahrenheit the... Co2 buildup heater and find the root cause of this problem is- just to replace the remote.. Around 120 F. then, check for proper connection flame has been lost eight! Bother doing this though free to make sure that too much cold water or a unit is! Is 18000 240 = 75 amps could even go with the city water well... Of their legitimate business interest without asking for consent allow ads support the,... With solar collector based on 65 incoming water temperature, press the Down button from the condensate and... Cause your tankless water heater to not work same thing box, look a! Colder water that comes in, the wire gets burnt due to overload just. / tankless Electric water heater fluctuates between putting out hot and cold water and leads system! A breaker labeled air conditioner, furnace, heater, remove or turn it as! Fact is, you cant turn on hot water and hot water I had a new Rheem unit today. Low or the circuit breaker problem the loosened one, and ensure safe operation performance! From these, there are a lot of plumbers dont bother doing this though faucet to drain the condition! Awg wire alternatively, the need for a minute while holding Down the red.! Common problems with a new Rheem unit installed today and it will help reset! Reset the unit rtex-15 one smaller if thats it or Down arrow on! ; the water to trip the circuit breaker gets tripped because of.... Grounded 3-prong wall plug and the circuit breaker gets tripped because of overload is going on the.