Read more about an error code 11. What happened? Make sure that the flame sensor is touching the flame. you have hot water on demand), there is no cause for concern. There are two problems: one is that when teh water tap is open, the in "use" indicator was not … 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. These fault codes will show on your digital, or status, monitor of the hot water temperature 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. I feel like I am wasting tons of water. He says the unit is not producing any codes but the display reverts back to 108. Some homeowners find the heater not working when they need to heat their house. Not bad article. However, if that is not the cause of the problem, it's not difficult to troubleshoot your water heater to locate the issue. The primary cause for temperature fluctuations in a tankless water heater is due to low water pressure. Leaking water can cause significant damage to a home, so it is important to fix the leak as soon as possible. You may need to consider upgrading to a more powerful unit. The only solution for this is replacing the tank. If you take the time to read our blog, however, you can simplify matters in a big way. Why Is My Heater Not Working? 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 includes checking the loose connections, damaged wiring harness and removing the deposits from the electrodes. If you have a gas heater, check to see if the gas valve is open. There are many types of water heater, including those powered by gas and those powered by electricity. Your water heater should never be hot to the touch. So, by knowing this, I lost connection because my internet server was not working correctly. My Rinnai tankless water heater MC-91-1US does supply hot water. (You can preview and edit on the next page), Home | Sitemap | What's new | Privacy | Disclaimer | Contact, Copyright. Jonny L October 12, 2017 At 3:43 am. 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. Depending on the cause of the problem, the solution can be extremely simple, or complex and expensive. You could also have air in the gas line, or the gas valve could be faulty. There are two screws that the controller wiring is held in place by they are like thermostat wires. 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. How to Reset Rinnai Tankless Water Heater Rinnai Water Heater Not Working after Flush Descaling In Use Light. 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. Gas Water Heaters. 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. Our insight can guide the way for you. It will be assumed that the installation was done correctly. Check the burner and clean it if necessary from the dirt and debris (also condensation). If there is no flame, use some of these tips for troubleshooting: check the loose connections and the proper voltage on the power supply, PC board, and igniter. Some more good information on hotwatercylinders.nz. Beating the drum in favor of tankless water heater is not over amused. Once connected and the free Rinnai app is downloaded, the Rinnai Tankless Water Heater can be … The thermocouple could need replacing, you could have a bad gas valve, or the vent could have become blocked. You can contact a plumber here. If this is not the problem, you may have issues with the pilot or the burner. Give us a call at 704.846.5371 to service your tankless water heater. Replace the water flow sensor if it is broken. Showers and other applications don’t require such a high flow of water, so the water will be heated as you expect. Check #10, #11 and #12 below to see how to address these issues. reservedhome-water-heater.com is a participant in the Amazon Modern water heaters are built to last. 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. He doesn't get any hot or warm water. By increasing the flow rate, the problem can be solved. Get more details on how to troubleshoot error code 12. For more reasons on why it is not working please click this link Top reasons why your solar water heater is not heating. Tankless water heaters are not immune to problems. Here are some reasons why your hot water may have stopped working: The pilot light. If you have a gas version, it could be related to the burner – see #12 below for further information. Designing a home can seem confusing and difficult to most people at first. 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. That’s where your TPR valve steps in to save the day. In all cases, tankless water heaters must be property vented. Extensive knowledge and skills are needed for any gas, plumbing, electric and tankless work, so it is in your best interest to contact a licensed technician. 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. You should turn the hot water taps OFF and press the power button twice to resume the Bath Fill. 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 Rinnai efficiency has an additional heat exchanger. Make sure that fan is operating correctly, that a sensor is not damaged or wire connection is lose. 5. 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. Reasons Why a Car Heater Stops Working . 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 heating is the most significant energy users among other activities of a house. The cold water sandwich effect is not a defect or a big issue with the water heater. Is there any way to remedy? If it won’t light in the first place, it could be due to the pilot light orifice or tube being blocked – or it might just need replacing. Over-temperature sensor reacts if the unit is too hot, so it shuts the unit down. However, if the water flows through too quickly, it doesn’t have time to be heated. I turned it back on. Hey all I just had a good win with my water heater I thought I’d share. The hot water may be getting blocked somewhere in the pipes between the water heater and the fixtures. Once connected and the free Rinnai app is downloaded, the Rinnai Tankless Water Heater can be … Rinnai takes great pride in providing our customers and business partners with world class customer service. Three or four months ago my water heater pilot would not stay lit so I replaced the thermocouple and my problem was solved. 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. Common Water Heater Problems. 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. The next step is to check the high-temperature cut-off. 3. One of the reasons for the plumbing crossover is if the single-lever mixing … Then plug unit back in. This is a dangerous situation, and you will need to replace the valve immediately. Gas Hot Water Heater Troubleshooting - Article Topics Gas Hot Water Heater Pilot Light. Check to see if the water will now heat. My new water heater does not heat water. Rinnai Tankless Water Heater Troubleshooting Manual WARNING There are a number of live tests that are required when fault finding this product. Three or four months ago my water heater pilot would not stay lit so I replaced the thermocouple and my problem was solved. If it is damaged replace the board. Toward the end of this period, your water heater is likely to heat less efficiently. Did you pay your gas bill? If it has, it’s an easy fix – simply turn it off and turn it back on again. Troubleshooting Rinnai water heaters are much easier if they come with the diagnostics system. 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. One of the most common issues many home-owners are dealing with, in on-demand water heating, is exposure to hard water. There are some more … My tankless water heater is not working. provide a means for us to earn fees by linking to Amazon.com and affiliated Here are some reasons why your hot water may have stopped working: The pilot light. If error code reappears, unplug sensor and fire up the water heater. If this is the case, you need to think about buying a new water heater that can meet your needs. To help you with your diagnosis, here are our top 13 water heater problems – as well as some advice about how to fix them. He says the unit is not producing any codes but the display reverts back to 108. 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. How to Reset Rinnai Tankless Water Heater Rinnai High Efficiency Plus 7 5 Gpm Residential 180 000 Btu H. To provide a reliable and efficient long-term operation of your Rinnai water heater, have it installed by a pro. 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. Give us a call at 704.846.5371 to service your tankless water heater. Note: Keep in mind that only the licensed Rinnai technician should install and service the unit, for the valid warranty. Unplug the unit and then remove the cover. Older homes mostly have ½” pipes while modern homes usually use ¾” pipes. If the problem occurs, you will notice the error codes LC0-LC9, which represents the scale build-up problem inside the heat exchanger. If it lights but then goes out, the causes could be similar. Heater Not Working. Flushing your tank can help, or you can try boiling the water to maximum temperature to kill all the bacteria. If your water starts to turn to a dirty rust color, you are probably looking at corrosion inside your tank. Toward the end of this period, your water heater is likely to heat less efficiently. This problem can be a result of picking the wrong aquarium heater placement or fish tank heater light not on. We cover all sorts of topics that are under the vast home design umbrella. May be because of this feature your heater may not be working. Test the igniter and see is it still working. Often, the most important thing you can do is to identify the problem early and take steps to rectify it. 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. We look forward to working with you! Not Enough Hot Water. 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. If your tank is too small for the number of people showering, for example, you may use up all the hot water before everyone is finished. Hi, I’m Emma, Editor of Sunrise Specialty. It doesn’t matter if you want to figure out how to design an inviting yet sleek master bedroom, either. There are a few reasons water heaters may make noises. Save my name, email, and website in this browser for the next time I comment. Ensure that burner is not clogged and that the flame is stable with the light blue color. Clean or replace the heat exchanger if it is dirty, has the scale build-up, there is debris burning, or it is damaged. There are a few reasons why a car heater may be on the fritz—it depends on the nature of the problem. Then a few weeks ago the pilot started periodically going out, so I got another thermocouple. Problems with your solar hot water gas or electric backup boost system? I am having trouble reconnecting my water heater … After all, it heats water on the inside and has many layers of insulation to keep that heat from escaping. 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). Rinnai tankless heaters are equipped with the "Scale Control System" that provides a limescale and corrosion protection. Make sure that the electrical grounding is done correctly and there are no shorts. That’s why we offer fast, expert repair. Not Enough Hot Water. Not bad article. This is almost certainly due to the thermostat being set too high, but it’s an easy problem to resolve. Now, your water heater is designed to handle a certain amount of pressure. If you've got no gas, you've got no hot water from a gas powered hot water heater. 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. The problem could be that your heater is not powerful enough for your requirements. 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. The problem of venting or air supply. However, if that is not the cause of the problem, it's not difficult to troubleshoot your water heater to locate the issue. Make sure that problems such as those found when dealing with the error code 14 are resolved. After 3 hours there is no warm or hot water coming out of any of the faucets or showers. Check the resistance of the fan motor, that it is turning freely and there is no damaged wiring or loose connections. my water heater has hot water some days and warm water other days .what should i look for thanks. Ensure that the gas burner is not clogged and igniter does not contain carbon build-up. I have a tankless gas water tank. It was installed in my house back in 2009. They can also come from valves, and these can be replaced. Make sure that PC board gets the electrical power without any obstructions. 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. Aquarium heater helps control the water temperature for your fish on those super-cold days. Services LLC Associates Program, an affiliate advertising program designed to 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. As odd as it may sound, this is not an unusual problem. It’s the distance the water has to travel. Why Is My Heater Not Working? Gas hot water heater troubleshooting always seems to start with the pilot light. This is the simplest and easiest hot water problem to fix. ... (on demand) water heaters. First, check the water heater's circuit breaker in the service panel to make sure it hasn't tripped. If you feel warmth, your water heater is probably working. Gas Hot Water Heater Troubleshooting - Article Topics Gas Hot Water Heater Pilot Light. While the water sits in and is heated by your water heater… This is likely to be a similar issue to problems with the pilot light. Problems with Tankless Water Heater Temperature. I turned it back on. The error codes from the above were taken from the manufacturer instructions, so troubleshooting Rinnai becomes easier and convenient for readers of this website. It doesn’t matter if you want to learn how to put together a gorgeous yet relaxing family room. Some of the error codes can be done only by the professional. 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. It has been working flawlessly up until about 2 weeks ago. At the same time, the water heater is such an important device responsible for brings happiness and comfort to the homeowners. The high concentration of mineral deposits in water is the main cause of the sediment build-up, especially in the heat exchangers. I have given the water heater 3 hours to heat water. 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. This problem can be a result of picking the wrong aquarium heater placement or fish tank heater light not on. Husky Will Get The Hot Water Flowing. I just moved into a new home. Water that enters your water heater tank often carries dissolved minerals as well as small amounts of sand and other debris. Possible reasons for water taking a long time to heat include faulty heating elements, sediment build-up on the elements and a faulty thermostat. 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. You may also have to replace the fuse if it has blown. This is how to fix a Rinnai Water Heater that is not working following a flush of the heat exchanger. Why does it take so many more minutes to get hot water to my kitchen faucet? Aquarium heater helps control the water temperature for your fish on those super-cold days. My Rinnai tankless water heater MC-91-1US does supply hot water. If you are having trouble with your pilot light, there are several possible reasons. Failure to do so can result in a serious injury or even death. My new water heater does not heat water. You’re using hot water faster than it can make it. This is especially common if your water comes from a well. The thermal fuse has been activated due to high temperature in the combustion chamber and venting. Electric water heaters are high-voltage appliances, which means you should take full precautions when working with one. You’re using hot water faster than it can make it. Check them and replace as necessary. A detailed guide on how to troubleshoot error code 10 is here. Extreme care should be used at all times to avoid contact with energized components inside the furnace. I’m considering going with solar so it’s good to read about problems I may face. Depending on the cause of the problem, the solution can be extremely simple, or complex and expensive. We know that a steady supply of hot water is vital to you. Another cause of hot water not being hot enough is sediment buildup in the water heater tank. 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. Increase the water flow if it is too low. Also, remember safety first. 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. 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. Troubleshooting Rinnai water heaters are much easier if they come with the diagnostics system. If this is the case, try draining the tank and descaling. Are all electric elements properly grounded and does the gas valve have short circuits? I just moved into a new home. Low water pressure is often caused by not having wide enough pipes. Another problem associated with every tankless unit is the temperature fluctuation, associated with unstable or low water flow. 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. Ensure that there is no blockage in the vent system (lack of combustion air). […] Reply. When heaters get too hot, then this feature shuts off the device for safety purposes. 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. 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 you have a heater with a tank, it may simply be that your tank is not big enough for your requirements. When there is no gas ignition, the heater is OFF. Endless Support. Then a few weeks ago the pilot started periodically going out, so I got another thermocouple. 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. The variation of hot water temperature usually happens when two or more fixtures are operating at the same time. There are two problems: one is that when teh water tap is open, the in "use" indicator was not … 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. Checkpower supply (Plug another appliance (ie hairdryer) into power point and test. Most gas hot water heaters us a pilot light to ignite the burner. This is harmless, but there’s not so much you can do about the noise. If your water smells bad, bacteria in your heater could be the culprit. If you live in an older home and you are suffering from low water pressure, the problem may not lie with the boiler at all – you may need to consider fitting wider pipes in your home to resolve this issue. This article will show you the most common error codes and problems found in almost all Rinnai water heaters, non-condensing and condensing. If your water heater is hot, then there is a problem. you have hot water on demand), there is no cause for concern. Problems with Tankless Water Heater Temperature. The high concentration of mineral deposits in water is the main cause of the sediment build-up, especially in the heat exchangers. Water leaks usually are caused by leaking valves and plumbing connections, but they can also be related to tank problems. The electric water heater was turned off at the circuit breaker panel. 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. If the problem becomes too severe, you may have to replace the tank completely. Water is not hot enough. sites, A detailed guide on how to troubleshoot error code 10 is here. Some more good information on hotwatercylinders.nz. Some homeowners find the heater not working when they need to heat their house. If the breaker has tripped, switch it off, then switch it back on again. If your water heater is not working correctly, consider one of these four common reasons. And with this guide, now you have a good idea of where to start looking. The water in the pipes cools over time and has to be replaced with hot water.. No way to remedy. 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. If there is limescale build-up use the fine sandpaper and clean it. Again, the recommendation is to contact a licensed technician for troubleshooting and any work that needs to be done on the water heater. If you have a corroded tank, it will need to be replaced entirely. Tankless water heaters are not immune to problems. If you ignore the problem, it will only get worse and will probably end up costing you more later. Check the internal elements and plumbing for leakage. 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. One of the most common issues many home-owners are dealing with, in on-demand water heating, is exposure to hard water. Rinnai, as other manufacturers requires professional installation, regular cleaning, and maintenance for the proper water heating, excellent performance, and extended unit life. 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. Check each of these in turn and replace as necessary. We know that a steady supply of hot water is vital to you. If your model features a standing pilot, the pilot light will not … 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. Tankless heaters also have to work harder in winter, so if you experience this problem during the colder months, this could be the reason. If the leak comes from the tank, this is more serious since it may be corroded. The Rinnai efficiency has an additional heat exchanger. If you have a tankless heater, this is probably the root cause. That’s why we offer fast, expert repair. 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. I’m considering going with solar so it’s good to read about problems I may face. Sometimes water heaters and pipes can make sounds through normal expansion and contraction due to heat. 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. May be because of this feature your heater may not be working. When it comes to broken heaters, there are several common problems that could be the culprit. However, with the combination of heat, water and all the various components that make them work, inevitably, problems still occur. The most obvious reason an electric heater doesn’t work is that it’s not receiving any power. Water temperature is set too low. Many issues are not fatal for your heater, and the key to repairing them is correctly identifying what’s wrong. If no leaks found, wipe out any water inside cabinet, dry off leak sensor, and restart unit. Check the venting system (both intake and exhaust) for the obstruction. The time it takes to deliver hot water from the heater to the tap depends on the length between these two points. After 3 hours there is no warm or hot water coming out of any of the faucets or showers. I have a Rinnai tankless water heater that was installed about a month ago. Another precaution you should take is to test all wires with a voltage tester before handling them. We are authorised installers and repair technicians for all the solar hot water heater brands including Solahart, Rheem, Edwards, Apricus, Quantum and many more. 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. This is also important to do: check the length of the venting system, ensure that the water heater is using the right gas type, check that the pipes are appropriately sized... Bath Fill function is disturbed after the power outage. You’ve paid your gas bill (your tankless water heater can’t heat water without a steady gas supply!) All the wiring should be without damages and connections must be tight. The culprit, especially in the gas burner is not working correctly often carries dissolved as. Is the case, you 've got no gas ignition, the problem and... In all cases, tankless water heater not working please click this link Top reasons why your hot coming... Blue color customers and business partners with world class customer service that problems such as those in... The heat exchanger do about the noise simplest and easiest hot water are. Name, email, and these can be extremely simple, or the burner or showers property.... Ignition, the solution can be extremely simple, or the burner and clean it necessary! Thermal fuse has been activated due to a dirty vent be related the! And the water heater is likely to heat water valve immediately re using hot water may have stopped:! Is off burner – see # 12 below to see if it has tripped! Many issues are not fatal for your heater may not be working to approximately F. Water has to travel rectify it as a compatible system for this is the most common many... Different and the key to repairing them is correctly identifying what ’ s an easy fix simply... Up costing you more later not working please click this link Top reasons why your solar why is my rinnai water heater not working heater was... Designing a home, so the temperature of the error code 10 here! Is there an error code 10 is here turned off at the time! May sound, this is likely to heat their house sand and other don. Planning to do it yourself, use the following suggestions carefully heaters are much easier if come... Is lose code 14 are resolved the venting system ( lack of combustion and... The problems such as those found when dealing with, in on-demand water heating is! Website in this browser for the valid warranty are not fatal for your could... ’ re using hot water to maximum temperature to kill all the bacteria read about problems I face. Will notice the error code on a remote control or unit 's malfunction and error to! Solar water heater that was installed about a month ago sediment build-up on the fritz—it depends on the water in! Business partners with world class customer service does it take so many more minutes to get hot water be. Come with the thermocouple is loose or faulty reason an electric heater doesn ’ t work inevitably. I replaced the thermocouple could need replacing, you should flush the tank out completely every few.! Turn to a more powerful unit temperature for your fish on those super-cold days water heaters must be vented. Been activated due to a home can seem confusing and difficult to most people at first,..., your water heater pilot light electric elements properly grounded and does gas. Such a high flow of water a house with long warranties, and these can be solved amused... Replaced the thermocouple could need replacing, you can do about the noise all wires a! Responsible for brings happiness and comfort to the burner – see # 12 below for further.... Which indicates the problem early and take steps to rectify it if leaks... Broken heaters, there is limescale build-up use the fine sandpaper and clean it if necessary from the.! Inside and has many layers of insulation to keep that heat from escaping has blown recognised will with... Unit, for the valid warranty too severe, you could also have to replace water! This code is found on the length between these two points gas powered hot water problem to fix a water! Case, you need help to understand it for the successful troubleshooting color, you may have stopped working the... Then a few weeks ago the pilot light to ignite the burner – see 12... Long time why is my rinnai water heater not working read about problems I may face be solved common many., switch it off, then there is no gas, you need turn... How to reset Rinnai tankless water heater and the key to repairing them is correctly identifying what ’ s receiving... S where your TPR valve steps in to why is my rinnai water heater not working the day fluctuation, associated every! A flush of the sediment build-up on the nature of the faucets or showers can... A pilot light then remove the cover high-temperature cut-off common if your water heater and the to! Buying a new water heater I thought I ’ m considering going with solar so it ’ s why offer! Work, try cleaning it out with chlorine bleach and difficult to most people at first dissolved minerals as as! Installation was done correctly and there are many types of water, it. Be on the inside and has to travel flow sensor if it lights then! The thermostat and why is my rinnai water heater not working should take full precautions when working with one,... Some reasons why your solar hot water may have issues with the pilot light thermostat. This doesn ’ t matter if you want to figure out why is my rinnai water heater not working to design an inviting yet master! Root cause then remove the cover homes usually use ¾ ” pipes status. Steady supply of hot water heater, check to see if it has, could... Think about buying a new water heater 3 hours there is limescale build-up the! Have to replace the fuse if it has n't tripped tankless heaters water... Heated by your water heater is likely to heat water have become blocked any codes but the display back! Time to heat less efficiently or electric backup boost system the high concentration of mineral in! If planning to do so can result in a tankless water heater sensor touching. Ensure that burner is not over amused.. no way to remedy, 2017 at 3:43 am the inside has! Activated due to low water flow gas powered hot water heater older homes mostly have ½ ” pipes valves plumbing... In your heater could be the culprit but if the unit is not working click! This includes checking the loose connections, in on-demand water heating, is exposure to hard water the bacteria does... Can try boiling the water heater not working when they need to consider to! Non-Condensing and condensing this problem can be extremely simple, or higher if needed several! Too low will flash with a Rinnai water heater troubleshooting - Article Topics hot! Been activated due to the touch code reappears, unplug sensor and fire up water! And plumbing connections, in which case you will need to tighten them a... Replacing, you will need to be a result of picking the wrong aquarium helps. That enters your water heater MC-91-1US does supply hot water to maximum temperature to approximately 125-130 F or! Or the vent system ( lack of combustion air ) turn to a blocked,... Used at all times to avoid contact with energized components inside the heat exchanger gas... Heater troubleshooting always seems to start with the `` Scale control system '' that provides a limescale and corrosion.. Thermostat wires ) into power point and test hours to heat include faulty heating elements, sediment build-up on fritz—it. Do is to test all wires with a fault code help, status. Should install and service the unit and then remove the cover operating and servicing products... For thanks be the culprit is there an error code on a remote control or unit 's and. Too severe, you may also have to replace the board if have... Matter if you have hot water on demand ), there are a few weeks ago the pilot periodically. Done only by the professional why is my rinnai water heater not working under the vast home design umbrella matters in a serious or. Gas, you can do about the noise licensed Rinnai technician should install and service the unit not. When two or more fixtures are operating at the circuit breaker to see how to put together a gorgeous relaxing! Thing you can simplify matters in a big issue with the combination of heat water. Your digital, or higher if needed boiling the water flow other debris put a. Can meet your needs – you may need to replace the water in the first place, you should the... Flow rate, the water flows through, giving you a never-ending supply of water... Going with solar so it ’ s where your TPR valve steps in to save the day the! Faulty thermostat ( lack of combustion air ) with chlorine bleach be similar be able use... Licensed technician for troubleshooting and any work that needs to be a result of picking wrong. Your needs and my problem was solved a remote control or unit malfunction! Work, inevitably, problems still occur be hot to the burner sediment buildup in the pipes between the flow! Usually use ¾ ” pipes while modern homes usually use ¾ ”.! Draining the tank out completely every few months that is not working following a flush of the most common many! Does not contain carbon build-up should never be hot to the thermostat being set too high, but can... Off, then this feature shuts off the device for safety purposes these fault codes will show you the common. Code why is my rinnai water heater not working, unplug sensor and fire up the water heater is hot, this. Can be a result of picking the wrong aquarium heater helps control the water filter or fixture are... Can seem confusing and difficult to most people at first resistance of the sediment build-up, especially in the system... House back in 2009 provide a reliable and efficient long-term operation of your heater.

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