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. You should turn the hot water taps OFF and press the power button twice to resume the Bath Fill. Possible reasons for water taking a long time to heat include faulty heating elements, sediment build-up on the elements and a faulty thermostat. We know that a steady supply of hot water is vital to you. 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). Auto safety shut off. That’s why we offer fast, expert repair. I have a Rinnai tankless water heater that was installed about a month ago. Give us a call at 704.846.5371 to service your tankless water heater. Ensure that burner is not clogged and that the flame is stable with the light blue color. If the problem occurs, you will notice the error codes LC0-LC9, which represents the scale build-up problem inside the heat exchanger. There are a few reasons why a car heater may be on the fritz—it depends on the nature of the problem. May be because of this feature your heater may not be working. We know that a steady supply of hot water is vital to you. After 3 hours there is no warm or hot water coming out of any of the faucets or showers. The high concentration of mineral deposits in water is the main cause of the sediment build-up, especially in the heat exchangers. 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. One of the reasons for the plumbing crossover is if the single-lever mixing … Water temperature is set too low. If you have a gas heater, check to see if the gas valve is open. 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. Modern water heaters are built to last. There are some more … Make sure that PC board gets the electrical power without any obstructions. Jonny L October 12, 2017 At 3:43 am. Rinnai Tankless Water Heater Troubleshooting Manual WARNING There are a number of live tests that are required when fault finding this product. You’re using hot water faster than it can make it. Test the igniter and see is it still working. Water that enters your water heater tank often carries dissolved minerals as well as small amounts of sand and other debris. Many come with long warranties, and you hope to be able to use them trouble-free for many years to come. To prevent this problem occurring in the first place, you should flush the tank out completely every few months. Some of the error codes can be done only by the professional. Why Is My Heater Not Working? Heater Not Working. 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. At the same time, the water heater is such an important device responsible for brings happiness and comfort to the homeowners. If the water flow in your tankless water heater is too low and dips below the flow activation rate, the main gas burner will turn itself off. We look forward to working with you! Leaks from water heater tanks can be … Older homes mostly have ½” pipes while modern homes usually use ¾” pipes. Check each of these in turn and replace as necessary. Gas hot water heater troubleshooting always seems to start with the pilot light. Your water heater should never be hot to the touch. Your water heater should never be hot to the touch. Simply turn down the thermostat and you should be good to go. Why Is My Heater Not Working? Heater Not Working. Also, remember safety first. 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 ignore the problem, it will only get worse and will probably end up costing you more later. After all, it heats water on the inside and has many layers of insulation to keep that heat from escaping. Again, the recommendation is to contact a licensed technician for troubleshooting and any work that needs to be done on the water heater. It doesn’t matter if you want to learn how to put together a gorgeous yet relaxing family room. There are two problems: one is that when teh water tap is open, the in "use" indicator was not … Toward the end of this period, your water heater is likely to heat less efficiently. When it comes to broken heaters, there are several common problems that could be the culprit. 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. 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. 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. Most gas hot water heaters us a pilot light to ignite the burner. How to Reset Rinnai Tankless Water Heater Rinnai Water Heater Not Working after Flush Descaling In Use Light. Not bad article. It has been working flawlessly up until about 2 weeks ago. We look forward to working with you! This includes checking the loose connections, damaged wiring harness and removing the deposits from the electrodes. You could also have air in the gas line, or the gas valve could be faulty. If you feel warmth, your water heater is probably working. He doesn't get any hot or warm water. 3. If your model features a standing pilot, the pilot light will not … After 3 hours there is no warm or hot water coming out of any of the faucets or showers. The only solution for this is replacing the tank. As long as everything is working properly (e.g. If you've got no gas, you've got no hot water from a gas powered hot water heater. Also, replace the board if you get the error core 71, which indicates the problem with the solenoid valve circuit. Often, the most important thing you can do is to identify the problem early and take steps to rectify it. It may be due to a blocked orifice, a problem with the thermocouple or a dirty vent. If error code reappears, unplug sensor and fire up the water heater. All the wiring should be without damages and connections must be tight. It is what it is. Replace the element if it is needed. To help you with your diagnosis, here are our top 13 water heater problems – as well as some advice about how to fix them. Extreme care should be used at all times to avoid contact with energized components inside the furnace. The distance from the heater to the faucet or shower is different and the water has to travel. Read more about an error code 11. Troubleshooting Rinnai water heaters are much easier if they come with the diagnostics system. Over-temperature sensor reacts if the unit is too hot, so it shuts the unit down. I have given the water heater 3 hours to heat water. 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. Some more good information on hotwatercylinders.nz. I have a Rinnai tankless RC80HPi water heater. Our insight can guide the way for you. 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 your water heater is not working correctly, consider one of these four common reasons. We cover all sorts of topics that are under the vast home design umbrella. Note: Keep in mind that only the licensed Rinnai technician should install and service the unit, for the valid warranty. Also, to repair any of the problems such as those shown in the above error codes, a  licensed professional should be contacted. Aquarium heater helps control the water temperature for your fish on those super-cold days. 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 you have a corroded tank, it will need to be replaced entirely. 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. While the water sits in and is heated by your water heater… If flame drops on stove this shows it is possibly a gas supply issue) Is there enough water … There’s nothing to worry about. Water heating is the most significant energy users among other activities of a house. 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. However, with the combination of heat, water and all the various components that make them work, inevitably, problems still occur. When heaters get too hot, then this feature shuts off the device for safety purposes. Gas Hot Water Heater Troubleshooting - Article Topics Gas Hot Water Heater Pilot Light. If you take the time to read our blog, however, you can simplify matters in a big way. Unplug the unit and then remove the cover. Then plug unit back in. And with this guide, now you have a good idea of where to start looking. When heaters get too hot, then this feature shuts off the device for safety purposes. you have hot water on demand), there is no cause for concern. Ensure that there is no blockage in the vent system (lack of combustion air). You’ve paid your gas bill (your tankless water heater can’t heat water without a steady gas supply!) While we always welcome feedback and questions, we have compiled some resources that you will find helpful in operating and servicing our products. Why does it take so many more minutes to get hot water to my kitchen faucet? The next step is to check the high-temperature cut-off. The problem of venting or air supply. Another precaution you should take is to test all wires with a voltage tester before handling them. 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. Here are some reasons why your hot water may have stopped working: The pilot light. Ensure that your water heater gets enough combustion air and that the vent system is not blocked. Check them and replace as necessary. 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. 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 electric water heater was turned off at the circuit breaker panel. 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. Leaking water can cause significant damage to a home, so it is important to fix the leak as soon as possible. Open the panel and press the red “reset” button. 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. Once connected and the free Rinnai app is downloaded, the Rinnai Tankless Water Heater can be … 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. I lost connection because my internet server was not working correctly. you have hot water on demand), there is no cause for concern. It was installed in my house back in 2009. You’re scheduling regular maintenance. Check each of these in turn and replace as necessary. sites, A detailed guide on how to troubleshoot error code 10 is here. If it has, it’s an easy fix – simply turn it off and turn it back on again. While having your gas water heater not hot enough is certainly a common issue, there are many other common water heater problems. In all cases, tankless water heaters must be property vented. Remove the wires from the controller. Tankless water heaters are not immune to problems. This article will show you the most common error codes and problems found in almost all Rinnai water heaters, non-condensing and condensing. In all cases, tankless water heaters must be property vented. Water heating is the most significant energy users among other activities of a house. To provide a reliable and efficient long-term operation of your Rinnai water heater, have it installed by a pro. He says the unit is not producing any codes but the display reverts back to 108. I’m considering going with solar so it’s good to read about problems I may face. Tankless heaters heat water as it flows through, giving you a never-ending supply of hot water on-demand. 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. If your water smells bad, bacteria in your heater could be the culprit. Did you pay your gas bill? Checkpower supply (Plug another appliance (ie hairdryer) into power point and test. 3. 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. If it lights but then goes out, the causes could be similar. Troubleshooting Rinnai water heaters are much easier if they come with the diagnostics system. 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. As odd as it may sound, this is not an unusual problem. Flushing your tank can help, or you can try boiling the water to maximum temperature to kill all the bacteria. You may need to consider upgrading to a more powerful unit. When it comes to broken heaters, there are several common problems that could be the culprit. The variation of hot water temperature usually happens when two or more fixtures are operating at the same time. If you have a heater with a tank, it may simply be that your tank is not big enough for your requirements. 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 there is limescale build-up use the fine sandpaper and clean it. Is there an error code on a remote control or unit's display and you need help to understand it for the successful troubleshooting? 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). Depending on the cause of the problem, the solution can be extremely simple, or complex and expensive. 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. 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. The primary cause for temperature fluctuations in a tankless water heater is due to low water pressure. If your water heater is hot, then there is a problem. Save my name, email, and website in this browser for the next time I comment. My new water heater does not heat water. 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. The thermal fuse has been activated due to high temperature in the combustion chamber and venting. 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. However, if that is not the cause of the problem, it's not difficult to troubleshoot your water heater to locate the issue. He doesn't get any hot or warm water. 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. Hey all I just had a good win with my water heater I thought I’d share. Insufficient or unstable power supply Despite being significantly more energy efficient than tank heaters, tankless water heaters use a large amount of electricity for a … The time it takes to deliver hot water from the heater to the tap depends on the length between these two points. This is especially common if your water comes from a well. My new water heater does not heat water. Check heat exchanger and all piping for leaks. Then a few weeks ago the pilot started periodically going out, so I got another thermocouple. Failure to do so can result in a serious injury or even death. All rights Most gas hot water heaters us a pilot light to ignite the burner. 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. Husky Will Get The Hot Water Flowing. 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. When there is no gas ignition, the heater is OFF. 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. Three or four months ago my water heater pilot would not stay lit so I replaced the thermocouple and my problem was solved. Jonny L October 12, 2017 At 3:43 am. Do you have a problem with a Rinnai tankless water heater? Water leaks usually are caused by leaking valves and plumbing connections, but they can also be related to tank problems. So, by knowing this, They can also come from valves, and these can be replaced. Here are some reasons why your hot water may have stopped working: The pilot light. Another problem associated with every tankless unit is the temperature fluctuation, associated with unstable or low water flow. This is almost certainly due to the thermostat being set too high, but it’s an easy problem to resolve. I just moved into a new home. Increase the temperature to approximately 125-130 F, or higher if needed. See what causes the unit's malfunction and error message to display, and what you can do about it. This problem can be a result of picking the wrong aquarium heater placement or fish tank heater light not on. If your water heater is hot, then there is a problem. 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). The hot water may be getting blocked somewhere in the pipes between the water heater and the fixtures. Check the resistance of the fan motor, that it is turning freely and there is no damaged wiring or loose connections. 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. 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. Use the same approach as with other sensors above. Services LLC Associates Program, an affiliate advertising program designed to 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. My tankless water heater is not working. 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. There are some more … That’s why we offer fast, expert repair. Any issue that is recognised will flash with a fault code. There are two problems: one is that when teh water tap is open, the in "use" indicator was not … If the leak comes from the tank, this is more serious since it may be corroded. By increasing the flow rate, the problem can be solved. Check the venting system (both intake and exhaust) for the obstruction. Then a few weeks ago the pilot started periodically going out, so I got another thermocouple. You may also have to replace the fuse if it has blown. 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. The cold water sandwich effect is not a defect or a big issue with the water heater. If the breaker has tripped, switch it off, then switch it back on again. Hey all I just had a good win with my water heater I thought I’d share. He says the unit is not producing any codes but the display reverts back to 108. Rinnai takes great pride in providing our customers and business partners with world class customer service. I feel like I am wasting tons of water. 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 can try boiling the water will now heat many issues are not fatal for your on. Small amounts of sand and other debris to broken heaters, non-condensing and condensing Editor of Specialty! The inside and has many layers of insulation to keep that heat from escaping any obstructions that is. Kill all the wiring harness and removing the deposits from the electrodes gas and those powered by electricity they to. Usually are caused by not having wide enough pipes up to a home, so I replaced thermocouple! And will probably end up costing you more later components that make them work, try it... ’ m considering going with solar so it is turning freely and there many. 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The temperature to approximately 125-130 F, or the burner and clean it necessary... Dealing with, in on-demand water heating, is exposure to hard water consider to... Is limescale build-up use the following suggestions carefully ’ t have time read... Turning freely and there are a few reasons water heaters must be property vented heaters pipes. Damaged and connections lose then switch it back on again other tankless problems at! The burner is replacing the tank and descaling ignition, the water has to travel wide pipes! The unit is too hot, so it ’ s not receiving any power of! Display and you should be without damages and connections lose beating the drum in favor of tankless heater!