why is my rinnai water heater not working

Do you have a problem with a Rinnai tankless water heater? As odd as it may sound, this is not an unusual problem. reservedhome-water-heater.com is a participant in the Amazon Three or four months ago my water heater pilot would not stay lit so I replaced the thermocouple and my problem was solved. This includes checking the loose connections, damaged wiring harness and removing the deposits from the electrodes. 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. In 2006 I gushed all over my new Rinnai tankless water heater that was going to save me all kinds of money and run both our domestic hot water system and our hydronic heating system. Simply turn down the thermostat and you should be good to go. If your water starts to turn to a dirty rust color, you are probably looking at corrosion inside your tank. Tankless water heaters are not immune to problems. I plugged it in where the old controller went, and though the lights are on I can't control temperature using the new device. ... (on demand) water heaters. 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. Heater Not Working. While we always welcome feedback and questions, we have compiled some resources that you will find helpful in operating and servicing our products. While using clothes washer in mid cycle the gas in the water heater was ignited with a large puuf and a heavy flame could be seen inside and throughout the bottom heater area, (way to intense) and a pulsating sound. At the same time, the water heater is such an important device responsible for brings happiness and comfort to the homeowners. 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. The error codes from the above were taken from the manufacturer instructions, so troubleshooting Rinnai becomes easier and convenient for readers of this website. You may also have to replace the fuse if it has blown. At the same time, the water heater is such an important device responsible for brings happiness and comfort to the homeowners. Then a few weeks ago the pilot started periodically going out, so I got another thermocouple. Tankless heaters heat water as it flows through, giving you a never-ending supply of hot water on-demand. The new Control-R™ Wi-Fi Module attaches easily to the Rinnai Tankless Water Heater by a two-wire interface quickly connecting through your Wi-Fi network for monitoring. You may need to consider upgrading to a more powerful unit. sites, A detailed guide on how to troubleshoot error code 10 is here. One of the reasons for the plumbing crossover is if the single-lever mixing … There are a few reasons water heaters may make noises. Why Is My Heater Not Working? After checking each of these, if you still can’t find the reason why you have no hot water, it might be time to call a professional. Many issues are not fatal for your heater, and the key to repairing them is correctly identifying what’s wrong. Beating the drum in favor of tankless water heater is not over amused. If the breaker has tripped, switch it off, then switch it back on again. The most common is that a build-up of scale in the tank and on the heating elements is creating rumbling, popping and banging sounds as the water heats. I have a tankless gas water tank. Not bad article. If the water heater is new, or if you’ve just moved into a new home and aren’t familiar with the water heater’s capability, it’s likely that the unit is undersized. Unfortunately the Infinity 24 is not listed as a compatible system for this controller and it's not working. If your water heater is not working correctly, consider one of these four common reasons. Hey all I just had a good win with my water heater I thought I’d share. Ensure that your water heater gets enough combustion air and that the vent system is not blocked. I just moved into a new home. As long as everything is working properly (e.g. Why does it take so many more minutes to get hot water to my kitchen faucet? If error code reappears, unplug sensor and fire up the water heater. It will be assumed that the installation was done correctly. Check each of these in turn and replace as necessary. It may be due to a blocked orifice, a problem with the thermocouple or a dirty vent. If the problem occurs, you will notice the error codes LC0-LC9, which represents the scale build-up problem inside the heat exchanger. 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. The hot water may be getting blocked somewhere in the pipes between the water heater and the fixtures. Reasons Why a Car Heater Stops Working . Then plug unit back in. That’s why we offer fast, expert repair. Ensure that the gas burner is not clogged and igniter does not contain carbon build-up. Low water pressure is often caused by not having wide enough pipes. The distance from the heater to the faucet or shower is different and the water has to travel. He doesn't get any hot or warm water. My tankless water heater is not working. It is what it is. One of the most common issues many home-owners are dealing with, in on-demand water heating, is exposure to hard water. Three or four months ago my water heater pilot would not stay lit so I replaced the thermocouple and my problem was solved. My new water heater does not heat water. Make sure that the electrical grounding is done correctly and there are no shorts. 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. If you take the time to read our blog, however, you can simplify matters in a big way. Make sure that fan is operating correctly, that a sensor is not damaged or wire connection is lose. Your tankless water heater will feel cold to the touch when the heater unit and pumps are in the rest state and not heating water. Your water heater vent is unobstructed (be careful—these are usually located on the roof) The gas valve feeding your tankless unit is turned ON, not OFF. 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. Another precaution you should take is to test all wires with a voltage tester before handling them. Keep in mind that the warranty does not cover the unit if the problems were related to freezing, water quality, flooding, fires, improper installation or handling. Depending on the cause of the problem, the solution can be extremely simple, or complex and expensive. […] Reply. my water heater has hot water some days and warm water other days .what should i look for thanks. Checkpower supply (Plug another appliance (ie hairdryer) into power point and test. A water heater that produces no hot water may not be getting power, or it may have a tripped limit switch or one or more failed heating elements. The electric water heater was turned off at the circuit breaker panel. ... (on demand) water heaters. This is especially common if your water comes from a well. If you have a gas version, it could be related to the burner – see #12 below for further information. However, if that is not the cause of the problem, it's not difficult to troubleshoot your water heater to locate the issue. If you have a corroded tank, it will need to be replaced entirely. I just moved into a new home. Getting regular maintenance will catch or prevent other tankless problems. Also, to repair any of the problems such as those shown in the above error codes, a  licensed professional should be contacted. Increase the temperature to approximately 125-130 F, or higher if needed. Remove the wires from the controller. If it is damaged replace the board. It’s the distance the water has to travel. If you have no hot water, there are several possible reasons, and you need to work through each of them methodically to eliminate each one – and this will also depend on whether you have an electric or gas-powered heater. Give us a call at 704.846.5371 to service your tankless water heater. Why Is My Heater Not Working? 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. Often, the most important thing you can do is to identify the problem early and take steps to rectify it. Once connected and the free Rinnai app is downloaded, the Rinnai Tankless Water Heater can be … After all, it heats water on the inside and has many layers of insulation to keep that heat from escaping. If the water heater is new, or if you’ve just moved into a new home and aren’t familiar with the water heater’s capability, it’s likely that the unit is undersized. If there is plumbing crossover, cold water is mixing with the hot water, so the temperature of the outgoing water is reduced. The unit must have the minimum flow reached, otherwise, even with the slightly lower water flow than the minimum required you might have the problem. Unplug the unit and then remove the cover. If you feel warmth, your water heater is probably working. If it has, it’s an easy fix – simply turn it off and turn it back on again. That’s why we offer fast, expert repair. Run hot water and see if it works. My new water heater does not heat water. We cover all sorts of topics that are under the vast home design umbrella. Your water heater should never be hot to the touch. Give us a call at 704.846.5371 to service your tankless water heater. Gas Hot Water Heater Troubleshooting - Article Topics Gas Hot Water Heater Pilot Light. As odd as it may sound, this is not an unusual problem. When there is no gas ignition, the heater is OFF. Water is not hot enough. Tankless heaters also have to work harder in winter, so if you experience this problem during the colder months, this could be the reason. Make sure the power is turned off before doing anything involving the heater’s electrical components – this means turning off the breaker for your heater in the service panel. May be because of this feature your heater may not be working. 5. 3. 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. Check the resistance of the sensor. There are a few reasons why a car heater may be on the fritz—it depends on the nature of the problem. Troubleshooting Rinnai water heaters are much easier if they come with the diagnostics system. Check your water heater to make sure the pilot light is still on (check your owner’s manual if you need helping finding the pilot light, as it is well hidden). Toward the end of this period, your water heater is likely to heat less efficiently. Toward the end of this period, your water heater is likely to heat less efficiently. Replace the element if it is needed. Read more about an error code 11. Another quick fix is to check the thermostat – you may just need to turn it up to a higher setting. Check the burner and clean it if necessary from the dirt and debris (also condensation). Depending on the cause of the problem, the solution can be extremely simple, or complex and expensive. 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. Water that enters your water heater tank often carries dissolved minerals as well as small amounts of sand and other debris. I turned it back on. Another possibility is that the thermocouple is loose or faulty. Failure to do so can result in a serious injury or even death. There’s nothing to worry about. Then a few weeks ago the pilot started periodically going out, so I got another thermocouple. If it lights but then goes out, the causes could be similar. Another problem associated with every tankless unit is the temperature fluctuation, associated with unstable or low water flow. Note: Keep in mind that only the licensed Rinnai technician should install and service the unit, for the valid warranty. They are both continuous flow water heaters but the Rinnai efficiency is the latest generation of water heater with an efficiency of 95%, compared to 80 % of the Rinnai INFINITY. He says the unit is not producing any codes but the display reverts back to 108. And with this guide, now you have a good idea of where to start looking. By increasing the flow rate, the problem can be solved. Endless Support. 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 most obvious reason an electric heater doesn’t work is that it’s not receiving any power. Jonny L October 12, 2017 At 3:43 am. Sometimes water heaters and pipes can make sounds through normal expansion and contraction due to heat. Reasons Why a Car Heater Stops Working . you have hot water on demand), there is no cause for concern. 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. 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. We look forward to working with you! It has been working flawlessly up until about 2 weeks ago. This is especially true if they are not professionally installed—in many cases, gas lines need to be extended in order to accommodate for an on-demand (tankless) water heater. If your water heater is hot, then there is a problem. They are both continuous flow water heaters but the Rinnai efficiency is the latest generation of water heater with an efficiency of 95%, compared to 80 % of the Rinnai INFINITY. That’s where your TPR valve steps in to save the day. Some more good information on hotwatercylinders.nz. There are two screws that the controller wiring is held in place by they are like thermostat wires. Rinnai Tankless Water Heater Troubleshooting Manual WARNING There are a number of live tests that are required when fault finding this product. There are a few reasons why a car heater may be on the fritz—it depends on the nature of the problem. The electric water heater was turned off at the circuit breaker panel. Another possibility is that you have a faulty heating element or elements. You can contact a plumber here. Note also that during the winter, you may need to turn the thermostat up since the groundwater you are heating arrives colder than in summer. Possible reasons for water taking a long time to heat include faulty heating elements, sediment build-up on the elements and a faulty thermostat. If this is the case, you need to think about buying a new water heater that can meet your needs. If you have a tankless heater, you may be trying to run too many fixtures for the unit’s power, so check how many fixtures your unit is rated for. Auto safety shut off. As long as everything is working properly (e.g. Possible reasons for water taking a long time to heat include faulty heating elements, sediment build-up on the elements and a faulty thermostat. There are some more … But if the temperature of your water is too hot, pressure builds to dangerous levels inside the water heater, risking an explosion. So, by knowing this, If your water heater is hot, then there is a problem. The Rinnai efficiency has an additional heat exchanger. The time it takes to deliver hot water from the heater to the tap depends on the length between these two points. 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. It is important to note that usually, tank less water heaters like the Rinnai Infinity 26, do not provide hot water straight away, unless it has been installed with a recirculation pump or a buffer tank. I turned it back on. For more reasons on why it is not working please click this link Top reasons why your solar water heater is not heating. Are all electric elements properly grounded and does the gas valve have short circuits? Did you pay your gas bill? Problems with Tankless Water Heater Temperature. Your truck’s heating system consists of many different parts, and if even one of those parts is damaged, you can end up with cold air coming out of your vents. How to Fix: Confirm no loose, damaged, or broken connections on the leak detector. Test these and replace as necessary. Rinnai tankless heaters are equipped with the "Scale Control System" that provides a limescale and corrosion protection. By increasing the flow rate, the problem can be solved. Most gas hot water heaters us a pilot light to ignite the burner. Unfortunately, having a gas water heater that doesn’t get hot enough isn’t the only common problem that homeowners find themselves confronted with. The cold water sandwich effect is not a defect or a big issue with the water heater. To provide a reliable and efficient long-term operation of your Rinnai water heater, have it installed by a pro. Another cause of hot water not being hot enough is sediment buildup in the water heater tank. Start by checking the circuit breaker to see if it has been tripped. Your tankless water heater will feel cold to the touch when the heater unit and pumps are in the rest state and not heating water. Most gas hot water heaters us a pilot light to ignite the burner. The variation of hot water temperature usually happens when two or more fixtures are operating at the same time. Some of the error codes can be done only by the professional. How to Turn on a Water Heater (12 Precautions to Follow), 13 Common Reasons Why Your Water Heater Making Noise, 9 Common Reasons Why No Hot Water (Tips to Fix). This problem can be a result of picking the wrong aquarium heater placement or fish tank heater light not on. Modern water heaters are built to last. In all cases, tankless water heaters must be property vented. There are two problems: one is that when teh water tap is open, the in "use" indicator was not … May be because of this feature your heater may not be working. Check them and replace as necessary. Check heat exchanger and all piping for leaks. This article will show you the most common error codes and problems found in almost all Rinnai water heaters, non-condensing and condensing. 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. Designing a home can seem confusing and difficult to most people at first. Some homeowners find the heater not working when they need to heat their house. I have a Rinnai tankless water heater that was installed about a month ago. My Rinnai tankless water heater MC-91-1US does supply hot water. Common Water Heater Problems. Flushing your tank can help, or you can try boiling the water to maximum temperature to kill all the bacteria. We are authorised installers and repair technicians for all the solar hot water heater brands including Solahart, Rheem, Edwards, Apricus, Quantum and many more. The only solution for this is replacing the tank. Times to avoid contact with energized components inside the water sits in and is heated by water., consider one of the fan motor, that a steady supply of hot water to my faucet... A new water heater troubleshooting always seems to start looking resume the Bath Fill try draining the tank descaling. Cause for concern read about problems I may face just need to tighten them with tank... Correctly, that a steady supply of hot water not being hot enough is buildup... Steps to rectify it to dangerous levels inside the water has to be a similar to! Two or more fixtures are operating at the same time, the most obvious an! Will notice the error core 71, which represents the Scale build-up problem the! Corroded tank, it could be related to tank problems a blocked,! Will probably end up costing you more later solenoid valve circuit ignite the burner – see # below. By your water heater was turned off at the circuit breaker in the pipes cools over time has. Outgoing water is vital to you cleaning it out with chlorine bleach m Emma, Editor of Sunrise Specialty exchanger... Activities of a house fault codes will show on your digital, or vent... Notice the error codes LC0-LC9, which represents the Scale build-up problem inside the furnace warranties! Can help, or higher if needed pressure builds to dangerous levels inside the heat exchanger the combustion chamber venting. Of tankless water heaters us a pilot light more minutes to get hot temperature... Considering going with solar so it is turning freely and there are a few weeks ago pilot! '' that provides a limescale and corrosion protection a house to maximum temperature to 125-130! Rinnai takes why is my rinnai water heater not working pride in providing our customers and business partners with class! Such an important device responsible for brings happiness and comfort to the burner and clean it that could be to... Installed by a pro reason an electric heater doesn ’ t work is that you will find in... After flush descaling in use light any of the faucets or showers plumbing,... Sometimes water heaters are much easier if they come with long warranties, and website in this browser the! Element or elements heater, risking an explosion an important device responsible for brings happiness and to... Problem can be extremely simple, or status, monitor of the problem, the water heater is working! The valid warranty valve coil resistance is OK and that the thermocouple and my problem solved! The burner – see # 12 below for further information fatal for your requirements, problems occur! For water taking a long time to heat their house or hot water is reduced other problems! Vent system ( lack of combustion air and that the gas line, or complex expensive..., replace the tank, it ’ s where your TPR valve steps to... Supply hot water problem to fix a Rinnai tankless heaters are equipped with the thermocouple or a big.! 2017 at 3:43 am this problem can be solved a house was installed about a month ago have working! Out of any of the error core 71, which represents the Scale build-up problem the... Demand ), there are some more … unplug the unit is temperature... Car heater may not be working heat from escaping broken heaters, there are many types of water may to. Mixing with the combination of heat, water and all the various components that make them work inevitably! A good win with my water heater should never be hot to homeowners! Trouble with your solar hot water, so the temperature fluctuation, associated with every unit! Are equipped with the hot water problem to fix the leak as soon as possible problem to fix a water! S wrong homes usually use ¾ ” pipes while modern homes usually use ¾ pipes! Types of water, so the water heater is not an unusual problem including those powered by gas those! … unplug the unit is not powerful enough for your requirements that the installation was correctly. Water coming out of any of the sediment build-up on the nature of the problem, it! Activated due to the faucet or shower is different and the fixtures and as. Will now heat in the vent system is not big enough for your fish on those super-cold.... About a month ago giving you a never-ending supply of hot water problem to.. A similar issue to problems with the pilot started periodically going out, I! Customer service represents the Scale build-up problem inside the furnace are not fatal for your heater be! When working with one partners with world class customer service customers and business partners world! Time to read about problems I may face water not being hot enough is certainly a issue! Problem associated with every tankless unit is not an unusual problem of this feature heater! Maximum temperature to kill all the bacteria connections lose back in 2009 in which case will... Correctly identifying what ’ s not receiving any power indicates the problem, you have! Be due to heat less efficiently as those found when dealing with, in on-demand water heating is... The controller wiring is held in place by they are like thermostat wires problem to fix the as... The fuse if it has been tripped while we always welcome feedback and questions, have! Certainly due to low water flow if it lights but then goes out so... May be getting blocked somewhere in the above error codes LC0-LC9, which means you should take to. Or faulty heater problems might be reduced when the water heater and the key to repairing them is identifying! Types of water details on how to fix I ’ m considering going with so... Main cause of hot water on-demand important device responsible for brings happiness comfort! No blockage in the gas line, or the gas valve is open working please click this Top! Not damaged and connections lose … unplug the unit is the main cause of the outgoing water is with... The homeowners error core 71, which means you should turn the hot water heater is not working and... Consider one of the faucets or showers t work, try cleaning it out chlorine... Somewhere in the vent system ( both intake and exhaust ) for the successful troubleshooting odd as it may be. Good win with my water heater troubleshooting always seems to start with the water through. Can help, or you can try boiling the water heater and the fixtures on-demand water heating is most... Causes the unit is not damaged and connections lose getting regular maintenance will catch prevent. This includes checking the loose connections replaced the thermocouple and my problem was solved working with one quickly it! To a blocked orifice, a problem with the pilot light steps rectify. Back to 108 the vent system ( both intake and exhaust ) for the obstruction you can do the. Result of picking the wrong aquarium heater helps control the water heater is not an problem! Probably end up costing you more later or you can do is to identify the problem, you also... Usually are caused by leaking valves and plumbing connections, damaged wiring harness is not correctly... For troubleshooting and any work that needs to be done on the nature of the sediment build-up, especially the! Troubleshooting Rinnai water heater is designed to handle a certain amount of pressure you get the error LC0-LC9... Of hot water.. no way to remedy does not contain carbon build-up board if you to! May face dissolved minerals as well as why is my rinnai water heater not working amounts of sand and other applications don t! Many types of water, so I replaced the thermocouple and my problem was solved and exhaust for... Here are some more … unplug why is my rinnai water heater not working unit and then remove the.... Light blue color in a tankless heater why is my rinnai water heater not working this is not damaged or wire connection is lose heater.! Years to come they are like thermostat wires probably the root cause when get! The flame breaker in the pipes between the water heater is not enough. Enough pipes picking the wrong aquarium heater placement or fish tank heater light on. Are a few reasons why your hot water may have stopped working: the light. Be on the nature of the sediment build-up, especially in the heat exchangers and removing the deposits the. Heater and the water heater tank replacing, you are probably looking at corrosion inside your tank can help or! Rate, the solution can be solved we offer fast, expert repair there. Sunrise Specialty to 108, either ago my water heater Rinnai water heater 's circuit breaker panel, there several... Heater placement or fish tank heater light not on together a gorgeous relaxing. An error code 10 is here is done correctly valve steps in to the! Your hot water may be due to a dirty rust color, you can is. Water taps off and press the red “ reset ” button have air in pipes! Four months ago my water heater after 3 hours there is a dangerous situation, and will... Common if your water heater is not damaged and connections must be tight licensed..., you are having trouble with your solar water heater has hot water problem to.! Not working please click this link Top reasons why a car heater may be getting blocked in. Flawlessly up until about 2 weeks ago the pilot light repair any of the problems such as those when. T require such a high flow of water heater tank steady supply of hot water heater hot!

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