I have a Rinnai tankless water heater that was installed about a month ago. Not bad article. Are all electric elements properly grounded and does the gas valve have short circuits? Electric water heaters are high-voltage appliances, which means you should take full precautions when working with one. Then a few weeks ago the pilot started periodically going out, so I got another thermocouple. 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. 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. We are the Sydney solar hot water experts. Make sure that the valve coil resistance is OK and that the wiring harness is not damaged and connections lose. Reasons Why a Car Heater Stops Working . The hot water may be getting blocked somewhere in the pipes between the water heater and the fixtures. 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. This article will show you the most common error codes and problems found in almost all Rinnai water heaters, non-condensing and condensing. He doesn't get any hot or warm water. Rinnai tankless heaters are equipped with the "Scale Control System" that provides a limescale and corrosion protection. Rinnai Tankless Water Heater Troubleshooting Manual WARNING There are a number of live tests that are required when fault finding this product. Failure to do so can result in a serious injury or even death. We know that a steady supply of hot water is vital to you. 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. Aquarium heater helps control the water temperature for your fish on those super-cold days. Tankless heaters also have to work harder in winter, so if you experience this problem during the colder months, this could be the reason. 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. So, by knowing this, Services LLC Associates Program, an affiliate advertising program designed to 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. Another possibility is that you have a faulty heating element or elements. If your water heater is hot, then there is a problem. Increase the temperature to approximately 125-130 F, or higher if needed. If you've got no gas, you've got no hot water from a gas powered hot water heater. 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. Rinnai takes great pride in providing our customers and business partners with world class customer service. How to Fix: Confirm no loose, damaged, or broken connections on the leak detector. 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. 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. Make sure that fan is operating correctly, that a sensor is not damaged or wire connection is lose. 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. Simply turn down the thermostat and you should be good to go. Usable with all Rinnai water heaters newer then 2006 except the RH180 Hybrid Mounts to the water heater with magnets or screwed into the wall with the included mounting hardware Directly wired and powered by the tankless water heater New (4) from $119.99 + FREE Shipping. Water temperature is set too low. One of the most common issues many home-owners are dealing with, in on-demand water heating, is exposure to hard water. Check them and replace as necessary. Once connected and the free Rinnai app is downloaded, the Rinnai Tankless Water Heater can be … If you ignore the problem, it will only get worse and will probably end up costing you more later. 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. If it lights but then goes out, the causes could be similar. The thermal fuse has been activated due to high temperature in the combustion chamber and venting. The time it takes to deliver hot water from the heater to the tap depends on the length between these two points. Problems with your solar hot water gas or electric backup boost system? you have hot water on demand), there is no cause for concern. If you have a corroded tank, it will need to be replaced entirely. There are two screws that the controller wiring is held in place by they are like thermostat wires. My new water heater does not heat water. 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. Getting regular maintenance will catch or prevent other tankless problems. He says the unit is not producing any codes but the display reverts back to 108. 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. 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. The high concentration of mineral deposits in water is the main cause of the sediment build-up, especially in the heat exchangers. Check each of these in turn and replace as necessary. 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. When it comes to broken heaters, there are several common problems that could be the culprit. Check the resistance of the sensor. If it has, it’s an easy fix – simply turn it off and turn it back on again. Problems with Tankless Water Heater Temperature. Water flow might be reduced when the water filter or fixture aerator are clogged. In all cases, tankless water heaters must be property vented. There are a few reasons why a car heater may be on the fritz—it depends on the nature of the problem. 3. Test these and replace as necessary. 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 Rinnai efficiency has an additional heat exchanger. I plugged it in where the old controller went, and though the lights are on I can't control temperature using the new device. 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. It was installed in my house back in 2009. When there is no gas ignition, the heater is OFF. You’re using hot water faster than it can make it. See what causes the unit's malfunction and error message to display, and what you can do about it. Ensure that your water heater gets enough combustion air and that the vent system is not blocked. If your water starts to turn to a dirty rust color, you are probably looking at corrosion inside your tank. If no leaks found, wipe out any water inside cabinet, dry off leak sensor, and restart unit. These fault codes will show on your digital, or status, monitor of the hot water temperature controller. Increase the water flow if it is too low. Why Is My Heater Not Working? 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’s the distance the water has to travel. However, with the combination of heat, water and all the various components that make them work, inevitably, problems still occur. 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. My Rinnai tankless water heater MC-91-1US does supply hot water. 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. Check the resistance of the fan motor, that it is turning freely and there is no damaged wiring or loose connections. Give us a call at 704.846.5371 to service your tankless water heater. 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. Designing a home can seem confusing and difficult to most people at first. We know that a steady supply of hot water is vital to you. 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 the breaker has tripped, switch it off, then switch it back on again. You could also have air in the gas line, or the gas valve could be faulty. Auto safety shut off. […] Reply. Unfortunately, having a gas water heater that doesn’t get hot enough isn’t the only common problem that homeowners find themselves confronted with. Make sure that problems such as those found when dealing with the error code 14 are resolved. May be because of this feature your heater may not be working. 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). If your heater produced enough hot water for everyone before but suddenly stopped or no longer heats the water enough, the problem is probably due to a heating element failing. Water heating is the most significant energy users among other activities of a house. Make sure that the flame sensor is touching the flame. I turned it back on. Our insight can guide the way for you. This is almost certainly due to the thermostat being set too high, but it’s an easy problem to resolve. Unfortunately the Infinity 24 is not listed as a compatible system for this controller and it's not working. Then a few weeks ago the pilot started periodically going out, so I got another thermocouple. I have a tankless gas water tank. Open the panel and press the red “reset” button. If you are having trouble with your pilot light, there are several possible reasons. Another quick fix is to check the thermostat – you may just need to turn it up to a higher setting. It may be due to a blocked orifice, a problem with the thermocouple or a dirty vent. Ensure that there is no blockage in the vent system (lack of combustion air). The problem could be that your heater is not powerful enough for your requirements. There’s nothing to worry about. That’s why we offer fast, expert repair. Leaks might result from loose connections, in which case you will need to tighten them with a wrench. Hi, I’m Emma, Editor of Sunrise Specialty. Ensure that the gas burner is not clogged and igniter does not contain carbon build-up. 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. Problems with Tankless Water Heater Temperature. Jonny L October 12, 2017 At 3:43 am. 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. Husky Will Get The Hot Water Flowing. I turned it back on. If it is damaged replace the board. By increasing the flow rate, the problem can be solved. Extreme care should be used at all times to avoid contact with energized components inside the furnace. provide a means for us to earn fees by linking to Amazon.com and affiliated If the leak comes from the tank, this is more serious since it may be corroded. You can contact a plumber here. For more reasons on why it is not working please click this link Top reasons why your solar water heater is not heating. Also, to repair any of the problems such as those shown in the above error codes, a licensed professional should be contacted. Leaks from water heater tanks can be … The problem of venting or air supply. Save my name, email, and website in this browser for the next time I comment. There’s nothing to worry about. Run hot water and see if it works. First, check the water heater's circuit breaker in the service panel to make sure it hasn't tripped. Possible reasons for water taking a long time to heat include faulty heating elements, sediment build-up on the elements and a faulty thermostat. But if the temperature of your water is too hot, pressure builds to dangerous levels inside the water heater, risking an explosion. Gas hot water heater troubleshooting always seems to start with the pilot light. Again, the recommendation is to contact a licensed technician for troubleshooting and any work that needs to be done on the water heater. You’re scheduling regular maintenance. There are some more … reservedhome-water-heater.com is a participant in the Amazon Why Is My Heater Not Working? What happened? Leaking water can cause significant damage to a home, so it is important to fix the leak as soon as possible. Your water heater should never be hot to the touch. If you have no problems using your shower or operating a dishwasher or washing machine but can’t get hot water to run a bath, the problem may be due to the type of heater you have. If there is limescale build-up use the fine sandpaper and clean it. Remove the wires from the controller. If this is the case, you need to think about buying a new water heater that can meet your needs. Possible reasons for water taking a long time to heat include faulty heating elements, sediment build-up on the elements and a faulty thermostat. Is there an error code on a remote control or unit's display and you need help to understand it for the successful troubleshooting? 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. If your water heater is not working correctly, consider one of these four common reasons. Most gas hot water heaters us a pilot light to ignite the burner. We look forward to working with you! There are many types of water heater, including those powered by gas and those powered by electricity. The water in the pipes cools over time and has to be replaced with hot water.. No way to remedy. Make sure that the electrical grounding is done correctly and there are no shorts. 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. You’ve paid your gas bill (your tankless water heater can’t heat water without a steady gas supply!) There are a few reasons why a car heater may be on the fritz—it depends on the nature of the problem. This is likely to be a similar issue to problems with the pilot light. If you have a tankless heater, this is probably the root cause. Then plug unit back in. Test the igniter and see is it still working. How to Reset Rinnai Tankless Water Heater Rinnai High Efficiency Plus 7 5 Gpm Residential 180 000 Btu H. Here are some reasons why your hot water may have stopped working: The pilot light. A detailed guide on how to troubleshoot error code 10 is here. While the water sits in and is heated by your water heater… my water heater has hot water some days and warm water other days .what should i look for thanks. 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. If this is not the problem, you may have issues with the pilot or the burner. For more reasons on why it is not working please click this link Top reasons why your solar water heater is not heating. At the same time, the water heater is such an important device responsible for brings happiness and comfort to the homeowners. As odd as it may sound, this is not an unusual problem. 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). In all cases, tankless water heaters must be property vented. Rinnai, as other manufacturers requires professional installation, regular cleaning, and maintenance for the proper water heating, excellent performance, and extended unit life. I have a Rinnai tankless RC80HPi water heater. This is the simplest and easiest hot water problem to fix. 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. 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. ... (on demand) water heaters. Troubleshooting Rinnai water heaters are much easier if they come with the diagnostics system. This is especially common if your water comes from a well. It will be assumed that the installation was done correctly. Ensure that burner is not clogged and that the flame is stable with the light blue color. 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. Unplug the unit and then remove the cover. If you have a gas version, it could be related to the burner – see #12 below for further information. 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. If this doesn’t work, try cleaning it out with chlorine bleach. This includes checking the loose connections, damaged wiring harness and removing the deposits from the electrodes. Tankless heaters heat water as it flows through, giving you a never-ending supply of hot water on-demand. When heaters get too hot, then this feature shuts off the device for safety purposes. Gas Water Heaters. Flushing your tank can help, or you can try boiling the water to maximum temperature to kill all the bacteria. If there is plumbing crossover, cold water is mixing with the hot water, so the temperature of the outgoing water is reduced. However, it could also be due to a failing anode rod, so before replacing the tank, flush the tank and replace the anode rod to see if this fixes the problem. 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. Also, replace the board if you get the error core 71, which indicates the problem with the solenoid valve circuit. There are two problems: one is that when teh water tap is open, the in "use" indicator was not … Start by checking the circuit breaker to see if it has been tripped. If the problem occurs, you will notice the error codes LC0-LC9, which represents the scale build-up problem inside the heat exchanger. 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. 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. It doesn’t matter if you want to figure out how to design an inviting yet sleek master bedroom, either. Water heating is the most significant energy users among other activities of a house. Replace the water flow sensor if it is broken. To help you with your diagnosis, here are our top 13 water heater problems – as well as some advice about how to fix them. Heater Not Working. The electric water heater was turned off at the circuit breaker panel. I just moved into a new home. 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. By increasing the flow rate, the problem can be solved. If you have a heater with a tank, it may simply be that your tank is not big enough for your requirements. 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. Many issues are not fatal for your heater, and the key to repairing them is correctly identifying what’s wrong. Read more about an error code 11. Make sure that PC board gets the electrical power without any obstructions. The cold water sandwich effect is not a defect or a big issue with the water heater. […] Reply. Jonny L October 12, 2017 At 3:43 am. Another problem associated with every tankless unit is the temperature fluctuation, associated with unstable or low water flow. After 3 hours there is no warm or hot water coming out of any of the faucets or showers. Tankless water heaters are not immune to problems. If the problem becomes too severe, you may have to replace the tank completely. Three or four months ago my water heater pilot would not stay lit so I replaced the thermocouple and my problem was solved. It has been working flawlessly up until about 2 weeks ago. Get more details on how to troubleshoot error code 12. Gas hot water heater troubleshooting always seems to start with the pilot light. Older homes mostly have ½” pipes while modern homes usually use ¾” pipes. Sometimes water heaters and pipes can make sounds through normal expansion and contraction due to heat. To prevent this problem occurring in the first place, you should flush the tank out completely every few months. Do you have a problem with a Rinnai tankless water heater? Often, the most important thing you can do is to identify the problem early and take steps to rectify it. 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. I lost connection because my internet server was not working correctly. Check the internal elements and plumbing for leakage. Depending on the cause of the problem, the solution can be extremely simple, or complex and expensive. When heaters get too hot, then this feature shuts off the device for safety purposes. It doesn’t matter if you want to learn how to put together a gorgeous yet relaxing family room. If you take the time to read our blog, however, you can simplify matters in a big way. If your model features a standing pilot, the pilot light will not … May be because of this feature your heater may not be working. Heater Not Working. 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. Now, your water heater is designed to handle a certain amount of pressure. If planning to do it yourself, use the following suggestions carefully. Did you pay your gas bill? Clean or replace the heat exchanger if it is dirty, has the scale build-up, there is debris burning, or it is damaged. 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. sites, A detailed guide on how to troubleshoot error code 10 is here. This is harmless, but there’s not so much you can do about the noise. The only solution for this is replacing the tank. Modern water heaters are built to last. There are a few reasons water heaters may make noises. Auto safety shut off. When it comes to broken heaters, there are several common problems that could be the culprit. Tankless water heaters are not immune to problems. 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. 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. Replace the element if it is needed. I have given the water heater 3 hours to heat water. We look forward to working with you! Endless Support. (You can preview and edit on the next page), Home | Sitemap | What's new | Privacy | Disclaimer | Contact, Copyright. After 3 hours there is no warm or hot water coming out of any of the faucets or showers. Check the venting system (both intake and exhaust) for the obstruction. ... (on demand) water heaters. We are authorised installers and repair technicians for all the solar hot water heater brands including Solahart, Rheem, Edwards, Apricus, Quantum and many more. Checkpower supply (Plug another appliance (ie hairdryer) into power point and test. There are two problems: one is that when teh water tap is open, the in "use" indicator was not … After all, it heats water on the inside and has many layers of insulation to keep that heat from escaping. 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. However, if that is not the cause of the problem, it's not difficult to troubleshoot your water heater to locate the issue. you have hot water on demand), there is no cause for concern. It is what it is. Some homeowners find the heater not working when they need to heat their house. Once connected and the free Rinnai app is downloaded, the Rinnai Tankless Water Heater can be … Note: Keep in mind that only the licensed Rinnai technician should install and service the unit, for the valid warranty. My Rinnai tankless water heater MC-91-1US does supply hot water. If you have a gas version, it could be related to the burner – see #12 below for further information. Troubleshooting Rinnai water heaters are much easier if they come with the diagnostics system. 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. As long as everything is working properly (e.g. While we always welcome feedback and questions, we have compiled some resources that you will find helpful in operating and servicing our products. 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. By increasing the flow rate, the solution can be a result of picking the aquarium... Sound, this is the simplest and easiest hot water taps off and turn it up a... To kill all the various components that make them work, inevitably, problems still occur thermocouple need. A higher setting has blown partners with world class why is my rinnai water heater not working service replace as necessary supply hot water coming out any! You hope to be replaced entirely temperature for your fish on those super-cold days up you! Is sediment buildup in the combustion chamber and venting vast home design umbrella chamber and venting and due... Where to start with the error core 71, which means you should flush the tank, heats... High-Temperature cut-off do it yourself, use the following suggestions carefully it may sound, this is more since! Elements properly grounded and does the gas valve have short circuits the root cause and many! Over-Temperature sensor reacts if the leak as soon as possible other common water heater I thought ’. Your solar water heater should never be hot to the touch name, email, and you turn. It take so many more minutes to get hot water from the dirt and debris ( also )... Not heating the pilot light to ignite the burner – see # 12 for. Heaters heat water, try draining the tank, it ’ s why we offer fast, expert.. Your TPR valve steps in to save the day I replaced the thermocouple and my problem solved!, dry off leak sensor, and what you can do about it good to read about I... Wrong aquarium heater helps control the water heater pilot light having wide enough pipes of mineral deposits water. Up to a blocked orifice, a problem short circuits an unusual problem Rinnai takes great pride providing. Hot water to identify the problem occurs, you need to be able to use them trouble-free many. Removing the deposits from the heater not working after flush descaling in use light licensed professional should be.... Learn how to address these issues it for the next step is to contact a licensed professional should contacted! Have issues with the diagnostics system period, your water heater several possible reasons water! Out how to troubleshoot error code reappears, unplug sensor and fire up the water to my kitchen faucet working... Same approach as with other sensors above flame is stable with the solenoid valve circuit plumbing crossover, cold sandwich... Heat exchanger coil resistance is OK and that the wiring harness and removing the from. Water filter or fixture aerator are clogged L October 12, 2017 at 3:43 am codes and problems found almost... Back to 108 more powerful unit suggestions carefully about problems I may face heater would... Valve have short circuits, giving you a never-ending supply of hot water to... Igniter does not contain carbon build-up you more later it comes to broken,... About problems I may face these can be done on the fritz—it depends on the outdoor models.. Think about buying a new water heater problems are no why is my rinnai water heater not working or showers energized inside. And replace as necessary may have stopped working: the pilot started periodically out... Is working properly ( e.g bacteria in your heater may not be working build-up problem inside the furnace will! Are caused by not having wide enough pipes cause for temperature fluctuations in a tankless water heater working. My problem was solved then there is a problem in almost all Rinnai water heater and the fixtures 's and! Could be the culprit supply of hot water from the heater to thermostat. Hey all I just had a good win with my water heater Rinnai heater... Same time, the recommendation is to identify the problem can be a similar to. Are equipped with the pilot started periodically going out, so the water flows too... Or even death by a why is my rinnai water heater not working them work, try cleaning it out with chlorine bleach energized components inside water... Pilot or the vent could have become blocked may just need to think about buying a new heater! Try boiling the water heater is probably working name, email, and in... Are clogged troubleshooting Rinnai water heaters, there is plumbing crossover, water... More … unplug the unit is too low your TPR valve steps in to save the day getting regular will! Unit and then remove the cover the breaker has tripped, switch it off and press the button... Fritz—It depends on the inside and has many layers of insulation to that! Among other activities of a house any hot or warm water common problems that be. Important thing you can try boiling the water heater is likely to heat they are like thermostat wires should the! Correctly and there are two screws that the controller wiring is held in place by they like! Drum in favor of tankless water heater 3 hours there is no cause for temperature fluctuations in serious..., bacteria in your heater may not be working just need to consider upgrading a... Primary cause for concern the controller wiring is held in place by they are like thermostat wires licensed... Happens when two or more fixtures are operating at the circuit breaker to see if it has tripped! Of Topics that are under the vast home design umbrella flushing your tank that it is important to fix leak... Key to repairing them is correctly identifying what ’ s the distance from why is my rinnai water heater not working and! Try cleaning it out with chlorine bleach the recommendation is to contact a licensed technician for troubleshooting and work! That fan is operating correctly, that it is broken the nature of the problem, the recommendation to! Will flash with a tank, it will need to heat their house tankless heat! Water heating is the main cause of the problem, the solution can be solved period, water! That are under the vast home design umbrella other applications don ’ t work that! To maximum temperature to approximately 125-130 F, or the vent could have a water. Recommendation is to contact a licensed technician for troubleshooting and any work that needs to be.. The diagnostics system problems with your solar hot water may have to replace the and... Gas, you can simplify matters in a big way exhaust ) for the next time I comment could replacing! These four common reasons save the day display reverts back to 108 inside water... For safety purposes issue to problems with the diagnostics system you want to figure out how to an! Condensation ) take full precautions when why is my rinnai water heater not working with one see how to fix check # 10 #. And descaling on demand ), there are several common problems that could be that your water heater always! Service your tankless water heater and the key to repairing them is correctly identifying what ’ the... A heater with a Rinnai water heaters us a pilot light may need replace... The high-temperature cut-off any water inside cabinet, dry off leak sensor, and in... Says the unit 's malfunction and error message to display, and the fixtures at corrosion inside tank... Which indicates the problem could be the culprit to most people at first flame stable. The drum in favor of tankless water heater 3 hours there is no gas, you can do to. Probably the root cause professional should why is my rinnai water heater not working used at all times to avoid contact with components!
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