Start by checking the circuit breaker to see if it has been tripped. The Rinnai efficiency has an additional heat exchanger. If this is the case, you need to think about buying a new water heater that can meet your needs. If error code reappears, unplug sensor and fire up the water heater. Another possibility is that the thermocouple is loose or faulty. Showers and other applications don’t require such a high flow of water, so the water will be heated as you expect. Remove the wires from the controller. If your water heater is hot to the touch then go through each of the items listed above as to why it might be happening. The water flow for running a bath, on the other hand, is much higher, and your tankless heater might just not be able to keep up. There’s nothing to worry about. The next step is to check the high-temperature cut-off. How to Fix: Confirm no loose, damaged, or broken connections on the leak detector. The high concentration of mineral deposits in water is the main cause of the sediment build-up, especially in the heat exchangers. The Rinnai efficiency has an additional heat exchanger. As odd as it may sound, this is not an unusual problem. Why does it take so many more minutes to get hot water to my kitchen faucet? It’s the distance the water has to travel. Make sure that problems such as those found when dealing with the error code 14 are resolved. It was installed in my house back in 2009. Water temperature is set too low. reservedhome-water-heater.com is a participant in the Amazon If your water smells bad, bacteria in your heater could be the culprit. I just moved into a new home. If this doesn’t do the trick, check the temperature pressure valve – if it is faulty, the heater won’t shut off when it reaches the correct temperature. By increasing the flow rate, the problem can be solved. Unfortunately, having a gas water heater that doesn’t get hot enough isn’t the only common problem that homeowners find themselves confronted with. They know that the thermostat is working and the central air system itself is still in good shape, but for one reason or another, there is no hot air despite the heater running. Did you pay your gas bill? Many issues are not fatal for your heater, and the key to repairing them is correctly identifying what’s wrong. Note: Keep in mind that only the licensed Rinnai technician should install and service the unit, for the valid warranty. How to Reset Rinnai Tankless Water Heater Rinnai Water Heater Not Working after Flush Descaling In Use Light. Leaking water can cause significant damage to a home, so it is important to fix the leak as soon as possible. This problem can be a result of picking the wrong aquarium heater placement or fish tank heater light not on. All rights Toward the end of this period, your water heater is likely to heat less efficiently. While the water sits in and is heated by your water heater… Possible reasons for water taking a long time to heat include faulty heating elements, sediment build-up on the elements and a faulty thermostat. However, if that is not the cause of the problem, it's not difficult to troubleshoot your water heater to locate the issue. All the wiring should be without damages and connections must be tight. Test these and replace as necessary. Troubleshooting Rinnai water heaters are much easier if they come with the diagnostics system. When there is no gas ignition, the heater is OFF. ... (on demand) water heaters. Check the resistance of the sensor. The electric water heater was turned off at the circuit breaker panel. You could also have air in the gas line, or the gas valve could be faulty. Not bad article. So, by knowing this, Modern water heaters are built to last. Tankless heaters also have to work harder in winter, so if you experience this problem during the colder months, this could be the reason. Husky Will Get The Hot Water Flowing. Rinnai error codes easily allow you to know exactly where the fault lies that is causing you to experience no hot water, or for your hot water heater to not operate at all. If there is plumbing crossover, cold water is mixing with the hot water, so the temperature of the outgoing water is reduced. Then all of a sudden while trying to run hot water in either of the showers or in the kitchen sink, the hot water would start cycling between cold and hot. Depending on the cause of the problem, the solution can be extremely simple, or complex and expensive. You can contact a plumber here. Test the igniter and see is it still working. 3. Get more details on how to troubleshoot error code 12. And with this guide, now you have a good idea of where to start looking. Is there any way to remedy? If a controller is fitted check that it is on also) Check gas supply (Turn gas stove top on then turn hot water tap on. Some homeowners find the heater not working when they need to heat their house. They know that the thermostat is working and the central air system itself is still in good shape, but for one reason or another, there is no hot air despite the heater running. Beating the drum in favor of tankless water heater is not over amused. If it is damaged replace the board. Designing a home can seem confusing and difficult to most people at first. We look forward to working with you! I got a call from a customer that I'm going to go see this afternoon about a Rinnai water heater that won't make hot water. This problem can be a result of picking the wrong aquarium heater placement or fish tank heater light not on. If the problem becomes too severe, you may have to replace the tank completely. If the water flow in your tankless water heater is too low and dips below the flow activation rate, the main gas burner will turn itself off. We cover all sorts of topics that are under the vast home design umbrella. When a standard tank-style gas water heater stops producing hot water, it means that the gas burner is no longer producing the flame necessary to heat the water. The error codes from the above were taken from the manufacturer instructions, so troubleshooting Rinnai becomes easier and convenient for readers of this website. See what causes the unit's malfunction and error message to display, and what you can do about it. Open the panel and press the red “reset” button. Units that are equipped with the remote controller such as the MC-91-2 will provide the most recent diagnostics information and allow you to react immediately by recognizing the error code and following the troubleshooting guide. Not Enough Hot Water. Gas hot water heater troubleshooting always seems to start with the pilot light. Leaks from water heater tanks can be … If your water starts to turn to a dirty rust color, you are probably looking at corrosion inside your tank. Reasons Why a Car Heater Stops Working . Your water heater should never be hot to the touch. My new water heater does not heat water. Some homeowners find the heater not working when they need to heat their house. May be because of this feature your heater may not be working. If this is not the problem, you may have issues with the pilot or the burner. The thermal fuse has been activated due to high temperature in the combustion chamber and venting. If there is a problem with the outgoing water temperature sensor or sensor on the heat exchanger check the resistance of the elements, ensure that the wiring is not loose, clean the elements from deposits or replace if damaged. Since a tankless water heater won’t store the pre-heated water all the time instead heats the water at the moment, it takes a little time. I feel like I am wasting tons of water. At the same time, the water heater is such an important device responsible for brings happiness and comfort to the homeowners. Check the internal elements and plumbing for leakage. To prevent this problem occurring in the first place, you should flush the tank out completely every few months. He doesn't get any hot or warm water. May be because of this feature your heater may not be working. You may need to consider upgrading to a more powerful unit. To help you with your diagnosis, here are our top 13 water heater problems – as well as some advice about how to fix them. One of the most common issues many home-owners are dealing with, in on-demand water heating, is exposure to hard water. Problems with Tankless Water Heater Temperature. However, if that is not the cause of the problem, it's not difficult to troubleshoot your water heater to locate the issue. It doesn’t matter if you want to figure out how to design an inviting yet sleek master bedroom, either. These fault codes will show on your digital, or status, monitor of the hot water temperature controller. While having your gas water heater not hot enough is certainly a common issue, there are many other common water heater problems. An absence of hot water generally occurs as a result of all the hot water in the tank being used up--for example, by running both the washing machine and dishwasher at the same time. This post is about Rinnai tankless water heater troubleshooting because that’s the brand we install the most often, but we have deep experience with all brands of tankless (on demand) water heaters. 3. Another precaution you should take is to test all wires with a voltage tester before handling them. Is there an error code on a remote control or unit's display and you need help to understand it for the successful troubleshooting? I have given the water heater 3 hours to heat water. To provide a reliable and efficient long-term operation of your Rinnai water heater, have it installed by a pro. We look forward to working with you! Leaks might result from loose connections, in which case you will need to tighten them with a wrench. You should turn the hot water taps OFF and press the power button twice to resume the Bath Fill. One of the reasons for the plumbing crossover is if the single-lever mixing … If you have water that smells of rotten eggs, it could be due to a failing anode rod – in which case, you should replace it. For more detailed information on troubleshooting an electric water heater, watch the video below: Again, if you don’t have enough hot water, the reason why will depend on the type of heater you have. There’s nothing to worry about. Problems with your solar hot water gas or electric backup boost system? If this doesn’t work, try cleaning it out with chlorine bleach. I have a tankless gas water tank. For more reasons on why it is not working please click this link Top reasons why your solar water heater is not heating. you have hot water on demand), there is no cause for concern. Water is not hot enough. If no leaks found, wipe out any water inside cabinet, dry off leak sensor, and restart unit. Then plug unit back in. Replace the water flow sensor if it is broken. The time it takes to deliver hot water from the heater to the tap depends on the length between these two points. Simply turn down the thermostat and you should be good to go. Clean or replace the heat exchanger if it is dirty, has the scale build-up, there is debris burning, or it is damaged. The electric water heater was turned off at the circuit breaker panel. Our insight can guide the way for you. (You can preview and edit on the next page), Home | Sitemap | What's new | Privacy | Disclaimer | Contact, Copyright. Check them and replace as necessary. CAUSE: Another reason for electric heater not working could be due to the auto safety shut off feature which is provided in several heaters these days. There are some more … We know that a steady supply of hot water is vital to you. Once connected and the free Rinnai app is downloaded, the Rinnai Tankless Water Heater can be … If your water heater is hot to the touch then go through each of the items listed above as to why it might be happening. Many fish lovers, me as well, may know how useful this heater is, but sometimes, we might confuse if the aquarium heater is working or not. Low water pressure is often caused by not having wide enough pipes. Check the venting system (both intake and exhaust) for the obstruction. If you take the time to read our blog, however, you can simplify matters in a big way. Most gas hot water heaters us a pilot light to ignite the burner. Many come with long warranties, and you hope to be able to use them trouble-free for many years to come. Check to see if the water will now heat. The cold water sandwich effect is not a defect or a big issue with the water heater. If your water heater is hot, then there is a problem. Problems with Tankless Water Heater Temperature. Make sure that fan is operating correctly, that a sensor is not damaged or wire connection is lose. What happened? How to Reset Rinnai Tankless Water Heater Rinnai High Efficiency Plus 7 5 Gpm Residential 180 000 Btu H. If flame drops on stove this shows it is possibly a gas supply issue) Is there enough water … Unplug the unit and then remove the cover. Services LLC Associates Program, an affiliate advertising program designed to Hey all I just had a good win with my water heater I thought I’d share. you have hot water on demand), there is no cause for concern. Ensure that there is no blockage in the vent system (lack of combustion air). Ensure that your water heater gets enough combustion air and that the vent system is not blocked. Now, your water heater is designed to handle a certain amount of pressure. Why Is My Heater Not Working? This article will show you the most common error codes and problems found in almost all Rinnai water heaters, non-condensing and condensing. This is almost certainly due to the thermostat being set too high, but it’s an easy problem to resolve. The distance from the heater to the faucet or shower is different and the water has to travel. If your water heater is hot, then there is a problem. If you've got no gas, you've got no hot water from a gas powered hot water heater. My Rinnai tankless water heater MC-91-1US does supply hot water. That’s where your TPR valve steps in to save the day. If the breaker has tripped, switch it off, then switch it back on again. If this is the problem, you will need to investigate alternative heating solutions for your bath because your tankless unit won’t be able to give you the hot water you need. This is how to fix a Rinnai Water Heater that is not working following a flush of the heat exchanger. Some more good information on hotwatercylinders.nz. Toward the end of this period, your water heater is likely to heat less efficiently. Why Is My Heater Not Working? I’m considering going with solar so it’s good to read about problems I may face. First, check the water heater's circuit breaker in the service panel to make sure it hasn't tripped. Of course, the TP valve or pipe could still be warm if the water heater stopped working within the last 3 or 4 hours because the water inside would still be holding some heat. If your model features a standing pilot, the pilot light will not … For more reasons on why it is not working please click this link Top reasons why your solar water heater is not heating. Troubleshooting Rinnai water heaters are much easier if they come with the diagnostics system. There are a few reasons why a car heater may be on the fritz—it depends on the nature of the problem. Another quick fix is to check the thermostat – you may just need to turn it up to a higher setting. Beating the drum in favor of tankless water heater is not over amused. As long as everything is working properly (e.g. Aquarium heater helps control the water temperature for your fish on those super-cold days. I have given the water heater 3 hours to heat water. Rinnai, as other manufacturers requires professional installation, regular cleaning, and maintenance for the proper water heating, excellent performance, and extended unit life. Water temperature for your heater may not be working the recommendation is to identify the problem the wiring be. Out any water inside cabinet, dry off leak sensor, and you will notice the codes! 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