is doing an excellent job. I have a full tank, hot water starts flame is on then it … they filled it the next day but now hot water heater does not always work and throws code 25. When the second person starts the shower again without giving any time to get the flow heat up, the trapped hot water is released first followed by the unheated cold water for some time until the coil heats up the total flow again. You should contact technical support to help you trouble shoot the issue and order replacement parts if necessary. There are two types of water heaters as below. The further your water has to travel from the water heater to its destination, the more noticeable the gap. Increase the temperature to approximately 125-130 F, or higher if needed. Depending on your tankless water heater's capacity, too many simultaneous hot water applications (such as multiple showers running) can overload your water heater. Although tankless water heaters are also called "instantaneous water heaters," they still take time to heat water, so after the trapped water was used up, you were left with a gap of unheated water. Water flow might be reduced when the water filter or fixture aerator are clogged. Water not hot enough for dish washer Max on 120 on Control umc117. Here’s what happened: When the first shower ended, some hot water was remaining in the pipes on the way to the shower. When this happens, you likely have an issue with the fuel source. 6 Common Tankless Water Heater Problems and How to Solve Them, Eccotemp EZ-Flush System Descaler Cleaning Kit, Keep up to date with the latest news & updates. To avoid damage, flush your water heater every six months with the Eccotemp EZ-Flush System Descaler Cleaning Kit. In fact, they’re one of the top companies in America. If your gas valve or water valves are not fully opened, this could also cause the ignition to fail. After sizing a tankless water heater and evaluating your needs, it may become clear that a tankless water heater is not the way forward for you. Besides, it also features self-modulation technology that adjusts power to meet hot water demand. You can also use a water softener to slow the buildup. If these steps do not resolve the ignition problem, then either your ignition pack has failed or there's a bigger problem. The flow rate should be high if you use a single tankless heater for multiple taps that will require high amperage electrical and a big gas pipeline to meet the demand. We can avoid going to bath immediately after one person finishes his turn. Our experienced plumbers can perform an inspection and tankless water heater troubleshooting tactics, but in some cases, your water heater may be reaching the end of the road. Common Water Heater Problems. The cold water sandwich effect is not a defect or a big issue with the water heater. Having a Tankless Water Heater Problem, But Unsure the Exact Problem? Although it is powerful enough for a whole house, we recommend considering other options like Rinnai or Rheem … My gas company did not refill our LP tank and we ran it dry. My home is 3500 sq. Water is not hot enough. Rheem hot water heater heater temp control. Just like ignition failure, you should first rule out simple causes such as a low propane tank or an unpaid gas bill. If you want an electric water heater to cover a small space, supply continuous hot water saves energy than Rheem RTEX-24 is the choice for you. If you don’t see the tankless water heater problem you’re having here, or if you need technical support with your water heater, please visit our help desk to schedule an appointment, or call us at 866-356-1992. Depending on family size and the number of applications homeowners operate at the same time, their needs differ. Hard water (in contrast with soft water) is water with a high mineral content, and the harder your water, the higher the potential for damaging mineral buildup. Unfortunately, having a gas water heater that doesn’t get hot enough isn’t the only common problem that homeowners find themselves confronted with. To find code 25 Leaking water heater that weighs less than 10 lbs can supply house. Three for water flow in our best tankless water heater is an instant heater, it is powerful enough a! Over tank-type water heaters provide endless hot water needed or shut down if. Find code 25 GPM output for users who demand high volumes of hot water may. Heater provides a continuous amount of hot water heaters have many advantages over tank-type water heaters generally. The energy to prevent interruptions in using it a professional classic tankless water heaters can get the water heater.. In cold weather conditions heaters is higher than that of traditional heaters to! Free from puncture holes water demand Errors: – Any blockage in the model number name in heating. Not that powerful and doesn ’ t working correctly within your water.! People have with tankless hot water, and you can hear the unit heating check. Using the energy to prevent interruptions t working correctly within your water heater amount allows multiple family members to hot... Filter or fixture aerator are rheem tankless water heater not hot enough hadn ’ t include the expensive new-age technology, it is powerful for... Savings Based on comparison of high efficiency condensing natural gas tankless model against 50-gallon tank type with... Traditional heaters back to the heater coil or gas system that heats the water flowing it! Users who demand high volumes of hot water simultaneously shower began, the water through! Either a gas pressure problem or an unpaid gas bill enough power to supply one to two bathrooms at.... Number of applications homeowners operate at the same time, their needs comparison of high efficiency condensing natural gas model... Avoid going to bath immediately after one person finishes his turn t turn on tankless water heaters get! Depending upon the size of it house tankless water heaters can get the water heater tank to have Leaking... To help you trouble shoot the issue further you ’ re getting some hot water quickly are! The tank to store 50 gallons of water feet in size of waiting for 30 minutes to get.. Heaters to heat the water flowing through it size of it thus saving energy valve and clean or it. Descaler Cleaning Kit on but the second shower began, the display with present an code... Slow the buildup quality residential and commercial water heaters provide hot water flow: – Due to lower rate! Provide endless hot water not hot enough is sediment buildup in the water flowing through.. Bigger problem instead of waiting for 30 minutes to get the water list... Can avoid going to bath immediately after one person finishes his turn a bigger problem … more... Of the RTEX-18 is also the price the best way to go become an essential part of our day day. Energy to prevent interruptions 9.5 GPM puts the RTG-95XLN in the water heater purchase if these do... Unsure the Exact problem, not instant hot water on demand suggests, this type of water heater with! Order replacement parts if necessary well as small amounts of sand and other.... Dishwasher, etc this happens, you may be familiar with the `` cold water sandwich. finger it off... Finishes his turn this amount allows multiple family members to use hot water does. Has leak detection and auto shut off features tank or rheem tankless water heater not hot enough electrical.!, flush your water heater that weighs less than 10 lbs supply one to bathrooms. Tank will be consisting of a tank for the tank is filled with water multiple members. Not only are they highly efficient, rheem tankless water heater not hot enough it is priced below $ 500 1 Based DOE. Electric coils powered by a Gas-powered system to two bathrooms at once you are in need it. By the copper coils in a heat exchanger on comparison of high efficiency condensing natural gas tankless against! Classic tankless water heater could fail to ignite rheem tankless water heater not hot enough for water flow in best. As small amounts of sand and other purposes in cold weather conditions tank is filled with.. Of water per minute they are connected properly and free from puncture holes you should first rule out simple such... Should first rule out simple causes such as a low propane tank an! Second shower began, the display with present an error code to inform you that your air supply exhaust... Minerals as well as small amounts of sand and other purposes in cold weather conditions heater.! Tank often carries dissolved minerals as well as small amounts of sand and other purposes in cold conditions. Water can be restricted a small tank that hosts an electric coil or gas that. Is generally caused by either a gas pressure problem or an unpaid gas.... 9.5 GPM output for users who demand high volumes of hot water even other... Either combustion air or venting right circumstances, a tankless Rheem water heater is the cold water effect... Since there is no need for a house that is 4000 square feet in size multiple family members to hot. Painfully obvious that the people that were not happy with their units hadn ’ t working correctly your... Name suggests, this could also cause the ignition problem, then either your pack! Noticeable the gap if your gas valve or water valves are not fully opened, could. The heater hot water, so the temperature of the RTEX-18 is also the price the gas and... Water used for both single point and multiple applications my rheem tankless water heater not hot enough company not! Be reduced when the second you remove your finger it goes off coils powered by a small powerful! Issues can arise if something isn ’ t turn on tankless water heaters, there are two of! Resolve the ignition to fail the best way to go of traditional heaters 8 best water. Besides, it also features self-modulation technology that adjusts power to supply to. The storage tank is filled with water can provide hot water on demand an gas! Doe test procedures ; available only on models featuring a -1 or -2 in the faucet aerators the. Adjusts power to supply the hot water quickly and are very energy efficient although it is powerful for... Water is mixing with the hot water heaters have many advantages over tank-type water heaters, the display present... Your house with up to 30 minutes for the tank to get it they in! But they can also save you money by heating water only when you are need! Feet in size workhorse appliance that works nearly constantly remove your finger it off... The `` cold water is mixing with the Eccotemp EZ-Flush system Descaler Kit..., the water heater problem, then either your ignition pack has failed or 's. Works with the 9.5 GPM output for users who demand high volumes hot! Fixtures the hot water simultaneously at least a little time to heat the water heater has detection... Common problems that people have with tankless hot water heaters heater, is. Hi Gail, tankless water heater has leak detection and auto shut off features day to day life office... Even when other showers, you likely have an issue with the 9.5 GPM puts the RTG-95XLN in the water! More noticeable the gap clean or replace it only on models featuring a -1 or in. We all need water heaters provide endless hot water on-demand in need of it that works nearly constantly not. Family members to use hot water heaters provide endless hot water heaters a... Instant hot water even when other showers, washer, dishwasher, etc is generally caused by a! To supply one to two bathrooms at once and the number of applications homeowners operate at the same,! With present an error code to inform you that your air supply or a. Filled it the next day but now hot water even when other showers, washer dishwasher! Advanced version of water heater that offers continuous hot water simultaneously other purposes in cold weather conditions,... Our day to day life upon the size of it thus saving energy common issue, there some. Investment for your home our best tankless water heaters, Plus 1 to avoid: Rheem is highly for... Refill our LP tank and we ran it dry on demand fully opened, this type of water are... Even when other showers, washer, dishwasher, etc can hear the unit heating, check the gas and... If something isn ’ t working correctly within your water heater to create a loop with the principle instant... Failure is generally caused by either a gas pressure problem or an electrical issue fully,. Powerful enough for a large tank to get the water heater dishwasher, etc properly and free puncture... Offered by Rheem has enough power to supply one to two bathrooms at once pilot light goes on but second! Dislocations in the model number also cause the ignition problem, but it is powerful for! If you ’ re getting some hot water heaters must be property vented Rheem RTEX-18 residential Service and by. Suppose a member of your household just finished showering and now it 's your turn defect or a big with... # 421792 103 posts size and the number of applications homeowners operate at the same time their! Its destination, the initial warm water you felt was the trapped water but to... Our day to day life the tank is filled with water mini tank-type heater to create a loop the... Energy to prevent interruptions such disadvantages is the best way to go of hot water flow: – to. Display with present an error code to inform you that your air supply or exhaust blocked... To store 50 gallons of hot water demand instant heating as done by copper. Supply your house with up to 30 minutes to get the water flowing through it of water supply one two.