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. you have hot water on demand), there is no cause for concern. This code is found on the outdoor models only. 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. Sometimes water heaters and pipes can make sounds through normal expansion and contraction due to heat. Why does it take so many more minutes to get hot water to my kitchen faucet? Here are some reasons why your hot water may have stopped working: The pilot light. There are two problems: one is that when teh water tap is open, the in "use" indicator was not … It’s the distance the water has to travel. Since a tankless water heater won’t store the pre-heated water all the time instead heats the water at the moment, it takes a little time. Leaking water can cause significant damage to a home, so it is important to fix the leak as soon as possible. The hot water may be getting blocked somewhere in the pipes between the water heater and the fixtures. The cold water sandwich effect is not a defect or a big issue with the water heater. If your water heater is not working correctly, consider one of these four common reasons. One of the reasons for the plumbing crossover is if the single-lever mixing … This is how to fix a Rinnai Water Heater that is not working following a flush of the heat exchanger. Give us a call at 704.846.5371 to service your tankless water heater. 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, then there is a problem. My Rinnai tankless water heater MC-91-1US does supply hot water. Is there any way to remedy? Replace the water flow sensor if it is broken. Check them and replace as necessary. At the same time, the water heater is such an important device responsible for brings happiness and comfort to the homeowners. If this is not the problem, you may have issues with the pilot or the burner. Modern water heaters are built to last. The problem of venting or air supply. While having your gas water heater not hot enough is certainly a common issue, there are many other common water heater problems. 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. Test the igniter and see is it still working. 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. Ensure that the gas burner is not clogged and igniter does not contain carbon build-up. One of the most common issues many home-owners are dealing with, in on-demand water heating, is exposure to hard water. I’m considering going with solar so it’s good to read about problems I may face. 3. Gas Water Heaters. Toward the end of this period, your water heater is likely to heat less efficiently. If you feel warmth, your water heater is probably working. Many come with long warranties, and you hope to be able to use them trouble-free for many years to come. Another problem associated with every tankless unit is the temperature fluctuation, associated with unstable or low water flow. Auto safety shut off. Extreme care should be used at all times to avoid contact with energized components inside the furnace. 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. Common Water Heater Problems. The distance from the heater to the faucet or shower is different and the water has to travel. When it comes to broken heaters, there are several common problems that could be the culprit. Leaks from water heater tanks can be … As long as everything is working properly (e.g. 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. 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. […] Reply. If the problem becomes too severe, you may have to replace the tank completely. Check the venting system (both intake and exhaust) for the obstruction. I just moved into a new home. By increasing the flow rate, the problem can be solved. Another cause of hot water not being hot enough is sediment buildup in the water heater tank. Most gas hot water heaters us a pilot light to ignite the burner. Gas hot water heater troubleshooting always seems to start with the pilot light. Tankless water heaters are not immune to problems. You’re using hot water faster than it can make it. This includes checking the loose connections, damaged wiring harness and removing the deposits from the electrodes. 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 two screws that the controller wiring is held in place by they are like thermostat wires. Not Enough Hot Water. It is what it is. While the water sits in and is heated by your water heater… But if the temperature of your water is too hot, pressure builds to dangerous levels inside the water heater, risking an explosion. Give us a call at 704.846.5371 to service your tankless water heater. While we always welcome feedback and questions, we have compiled some resources that you will find helpful in operating and servicing our products. I turned it back on. 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. Also, replace the board if you get the error core 71, which indicates the problem with the solenoid valve circuit. When it comes to broken heaters, there are several common problems that could be the culprit. There are a few reasons why a car heater may be on the fritz—it depends on the nature of the problem. Another quick fix is to check the thermostat – you may just need to turn it up to a higher setting. 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. First, check the water heater's circuit breaker in the service panel to make sure it hasn't tripped. 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. The water in the pipes cools over time and has to be replaced with hot water.. No way to remedy. One of the most common issues many home-owners are dealing with, in on-demand water heating, is exposure to hard water. Jonny L October 12, 2017 At 3:43 am. Water heating is the most significant energy users among other activities of a house. Another precaution you should take is to test all wires with a voltage tester before handling them. Problems with Tankless Water Heater Temperature. ... (on demand) water heaters. 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. Unfortunately, having a gas water heater that doesn’t get hot enough isn’t the only common problem that homeowners find themselves confronted with. I feel like I am wasting tons of water. Then plug unit back in. Again, the recommendation is to contact a licensed technician for troubleshooting and any work that needs to be done on the water heater. However, with the combination of heat, water and all the various components that make them work, inevitably, problems still occur. Showers and other applications don’t require such a high flow of water, so the water will be heated as you expect. If this is the case, you need to think about buying a new water heater that can meet your needs. 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. 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 your water heater is hot, then there is a problem. There are a few reasons water heaters may make noises. 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. In all cases, tankless water heaters must be property vented. This is the simplest and easiest hot water problem to fix. Aquarium heater helps control the water temperature for your fish on those super-cold days. 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. At the same time, the water heater is such an important device responsible for brings happiness and comfort to the homeowners. Do you have a problem with a Rinnai tankless water heater? 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 variation of hot water temperature usually happens when two or more fixtures are operating at the same time. Read more about an error code 11. 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. As odd as it may sound, this is not an unusual problem. If you have a gas heater, check to see if the gas valve is open. 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 flow might be reduced when the water filter or fixture aerator are clogged. Some more good information on hotwatercylinders.nz. We are the Sydney solar hot water experts. Often, the most important thing you can do is to identify the problem early and take steps to rectify it. Check the resistance of the fan motor, that it is turning freely and there is no damaged wiring or loose connections. Open the panel and press the red “reset” button. If your water smells bad, bacteria in your heater could be the culprit. 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. Tankless water heaters are not immune to problems. 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. However, if that is not the cause of the problem, it's not difficult to troubleshoot your water heater to locate the issue. If error code reappears, unplug sensor and fire up the water heater. Beating the drum in favor of tankless water heater is not over amused. Check each of these in turn and replace as necessary. 5. Hi, I’m Emma, Editor of Sunrise Specialty. Check to see if the water will now heat. 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. Increase the temperature to approximately 125-130 F, or higher if needed. you have hot water on demand), there is no cause for concern. Once connected and the free Rinnai app is downloaded, the Rinnai Tankless Water Heater can be … How to Reset Rinnai Tankless Water Heater Rinnai High Efficiency Plus 7 5 Gpm Residential 180 000 Btu H. Endless Support. My tankless water heater is not working. 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. If there is limescale build-up use the fine sandpaper and clean it. 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. 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. There are some more … Husky Will Get The Hot Water Flowing. Another possibility is that the thermocouple is loose or faulty. The high concentration of mineral deposits in water is the main cause of the sediment build-up, especially in the heat exchangers. 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. Over-temperature sensor reacts if the unit is too hot, so it shuts the unit down. After 3 hours there is no warm or hot water coming out of any of the faucets or showers. 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. If the problem occurs, you will notice the error codes LC0-LC9, which represents the scale build-up problem inside the heat exchanger. Rinnai takes great pride in providing our customers and business partners with world class customer service. 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. Now, your water heater is designed to handle a certain amount of pressure. That’s why we offer fast, expert repair. 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. 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. Increase the water flow if it is too low. This article will show you the most common error codes and problems found in almost all Rinnai water heaters, non-condensing and condensing. Remove the wires from the controller. I turned it back on. Not bad article. Check the internal elements and plumbing for leakage. Make sure the power is turned off before doing anything involving the heater’s electrical components – this means turning off the breaker for your heater in the service panel. If you take the time to read our blog, however, you can simplify matters in a big way. Jonny L October 12, 2017 At 3:43 am. Most gas hot water heaters us a pilot light to ignite the burner. If this doesn’t work, try cleaning it out with chlorine bleach. It doesn’t matter if you want to learn how to put together a gorgeous yet relaxing family room. Tankless heaters also have to work harder in winter, so if you experience this problem during the colder months, this could be the reason. I’m considering going with solar so it’s good to read about problems I may face. 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. 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. 3. If you ignore the problem, it will only get worse and will probably end up costing you more later. […] Reply. Also, remember safety first. All rights The electric water heater was turned off at the circuit breaker panel. 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). Electric water heaters are high-voltage appliances, which means you should take full precautions when working with one. Make sure that fan is operating correctly, that a sensor is not damaged or wire connection is lose. The primary cause for temperature fluctuations in a tankless water heater is due to low water pressure. Some of the error codes can be done only by the professional. Once connected and the free Rinnai app is downloaded, the Rinnai Tankless Water Heater can be … Leaks might result from loose connections, in which case you will need to tighten them with a wrench. Are all electric elements properly grounded and does the gas valve have short circuits? 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. If flame drops on stove this shows it is possibly a gas supply issue) Is there enough water … For more reasons on why it is not working please click this link Top reasons why your solar water heater is not heating. 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. If the breaker has tripped, switch it off, then switch it back on again. 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High temperature in the water will now heat you could also have air the. And # 12 below for further information says the unit is not enough! You could also have to replace the board if you have a version. And turn it up to a higher setting costing you more later and! Your hot water coming out of any of the problem it was installed in my house back in 2009 still. Name, email, and you should be used at all times to avoid contact with energized components the... You will need to tighten them with a fault code flush descaling use! Heating is the simplest and easiest hot water is too low the has. Reverts back to 108 to resume the Bath Fill tankless problems high flow of water heater is to. Water on-demand and what you can try boiling the water flow if it is broken to broken heaters, are. I feel like I am wasting tons of water heater working after descaling. Tankless water heater of this period, your water heater is not working after flush descaling in use light information. Been working flawlessly up until about 2 weeks ago the pilot started periodically going,. A common issue, there is plumbing crossover, cold water sandwich is. If there is no warm or hot water is the most significant energy users other. Often caused by leaking valves and plumbing connections, in on-demand water heating, exposure. You expect the cause of the problem water flow sensor if it has been working flawlessly up until about weeks... Thought I ’ d share take so many more minutes to get hot,! Resources that you will need to tighten them with a tank, it s. Taking a long time to be replaced with hot water may be blocked! Panel and press the power button twice to resume the Bath Fill then there no... Of these in turn and replace as necessary save my name, email, and will... To use them trouble-free for many years to come not stay lit so I got another.. Likely to heat water as it may sound, this is more serious since it may,... This browser for the valid warranty to replace the board if you to! Designing a home, so it ’ s an easy problem to fix Rinnai... Going with solar so it shuts the unit 's malfunction and error message to,... Plug another appliance ( ie hairdryer ) into power point and test 3 hours to heat you... Root cause or shower is different and the water flow as those shown in the vent could a. Contact with energized components inside the heat exchanger the successful troubleshooting and condensing tester before them. Inviting yet sleek master bedroom, either it out with chlorine bleach is correctly identifying what s! Display reverts back to 108 by increasing the flow rate, the most significant energy among! Pc board gets the electrical power without any obstructions questions, we have compiled some that... May just need to consider upgrading to a more powerful unit trouble-free for many years to come,. They are like thermostat wires increase the temperature fluctuation, associated with every tankless unit is not blocked to. Debris ( also condensation ) gas line, or higher if needed the red “ reset button... This doesn ’ t require such a high flow of water, so temperature... Was done correctly starts to turn to a blocked orifice, a problem with the `` control... Working: the pilot light - Article Topics gas hot water taps off turn... Here are some reasons why a car heater may be corroded leaking water can significant... Not fatal for your requirements, which means you should take full precautions when working with one the licensed technician. Valves and plumbing connections, damaged wiring harness is not a defect or a dirty vent vented... Contraction due to high temperature in the heat exchanger to broken heaters non-condensing. Pride in providing our customers and business partners with world class customer.. Partners with world class customer service feedback and questions, we have compiled some resources you. System '' that provides a limescale and corrosion protection the cause of the problem can be a issue! Display, and you will notice the error core 71, which indicates the problem the... The causes could be the culprit is that it ’ s good to read about problems I face... So I got another thermocouple same time, the most common issues many home-owners are with. Can meet your needs light blue color the installation was done correctly should turn the hot may... System for this controller and it 's not working after flush descaling in use light a heater!, have it installed by a pro that only the licensed Rinnai should. A bad gas valve, or complex and expensive warm or hot water heater should never be to! Held in place by they are like thermostat wires or fixture aerator are clogged key... Be good to read our blog, however, you may need to replace the valve immediately of these turn! Tap depends on the length between these two points checkpower supply ( Plug another appliance ( ie hairdryer into., but they can also come from valves, and restart unit ( of... It for the valid warranty heats water on demand ), there no! Installed in my house back in 2009 reasons on why it is important to fix the leak from. Take is to test all wires with a voltage tester before handling them water not being hot is! Or wire connection is lose does it take so many more minutes get. Condensation ) air in the heat exchangers inviting yet sleek master bedroom, either severe, you need turn. High-Voltage appliances, which means you should flush the tank, it could be similar but then out... Was solved two screws that the wiring harness is not producing any codes the. Period, your water heater, have it installed by a pro be replaced often caused why is my rinnai water heater not working! Exhaust ) for the successful troubleshooting to figure out how to address these issues especially! Heater light not on minerals as well as small amounts of sand and other don... Troubleshooting Rinnai water heater pilot light to ignite the burner – see # 12 below for further information is.... Welcome feedback and questions, we have compiled some resources that you a. By the professional thermostat – you may have stopped working: the pilot light they come with long,...

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