Turn off the power completely and then take out the PCB board from the internal tank. The Rinnai INFINITY N-Series are condensing gas continuous flow water heaters designed for commercial applications and high hot water demand residential installations. You need to check for the wiring connections and look for any damages, loose connections or broken connections available. We have 2 Rinnai infinity 24 manuals available for free PDF download: Operation Manual, User Manual You cannot manually do anything and for better assistance, you need to call a professional. This If you are unable to find the issue, you need to call a professional. such a problem, the tankless heaters may completely stop working. Check for the rest of the vent systems about their installation. stay safe. Check for the required clearances within the heater and look for their positions. Allow the heater to cool down and then turn on the power. Q3. appear, you need to perform a hard reset. Check for the fan motor and remove it. If all the hot water faucets are connected to the same water heater, it becomes more difficult for any person to manage the day. Check for the readings with a Voltameter and get the readings. For the Rinnai INFINITY, the switch is often located outside. In such a case, you need to completely change the fan housing and the fan wheel if there are no obstructions. code 13 means that you may have a problem in the combustion. However, you can diagnose the problem alone as well. This will allow you to remove the error code shown up. Only on when you need hot water. means that you may have problems with the water flow servo. But with the help of proper diagnosis, you can always avoid serious damages. We use cookies to ensure that we give you the best experience on our website. Turn off the power immediately and close all the hot water faucets in your home. Check for the power input in the water heater. professional. However, if it does not, you may need to place a service call. Check the input voltage to the valve while it is trying to fire. This specific type of error code is common for areas where the air pressure is high. Start by flushing the entire water present in the heater by turning on the hot water faucets. Check the burner and look for any type of rust of. Allow the heater to reset and it will remove the code. How do you reset the code on a Rinnai tankless water heater? responsible for the inlet water supply and converting to the outgoing means that the error code is available because of the secondary heat exchanger Water Heater Rinnai infinity 32 HD 250 E User Manual (28 pages) Summary of Contents for Rinnai Infinity 24e. Check for the POV valve and the resistance readings. off. Turn on the geyser once done. Try running the fan motor with separate power! Turn off the power in the water heater and then check for the moisture in the plastic tubing available. User Manual Continuous Flow Water Heater Infinity 26i, HD50iInfinity 26i, HD50i. [5 Factors Explained] , Water Heater Leaking from Cold Water Inlet – How to fix it? Well, if you are facing such issues, this guide on Rinnai Tankless Water Heater Troubleshooting will surely help you. For this, start with shutting the power and keep the faucets closed so that there is no air pressure. TanklessWaterHeaterExpress is reader-supported. If you do not find any faults, check for the dip switches and the individual power sources. Q1. If the code comes back up again, you may have a problem with the bypass valve. INFINITY 32 water heater pdf manual download. It shows an error code which allows you to detect the problem and get the instant solution. Allow some time for the heater to reset itself and the error code will be gone. Your water heater may receive Features. In this case, you need to power off the heater and unscrew the circuit. This Rinnai continuous flow water heaters can be utilised as a secondary heat source for a solar or ASHP boosted hot water delivery system. Rinnai Infinity 26: 153 questions on Australia's largest opinion site ProductReview.com.au. Rinnai remote temperature controllers allow precise temperature control by the user. In such a situation, you need to turn down the thermostat to see if it stops the beeping. Allow the unit to cool which will allow the switch to reset. If you continue to use this site we will assume that you are happy with it. Mainly this problem is because of the modulating solenoid valve. means that the circulation flow rate has dropped to a critical condition. 32 is a different issue of the outgoing water temperature. thermistor. Check for the loose connections or damaged connections available in the thermistor. Ask a question about Rinnai Infinity 24 in Gas Continuous Hot Water Systems. For this, you need to power off the water heater and then check for any broken connections. If the flow rate is below 1.3, there may be low air pressure or air obstruction from the pump. Make sure that the water is not flowing out. You need to turn off the power to the unit and wait for a few seconds to turn it on. damage. A range of commercial and domestic continuous flow hot water heaters for any application. Close all the hot water faucets in the home connected with the water It means two things – either a flame failure or an electrical failure. 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If you find any problems with it, try to repair it. a professional. Thankfully, most of the Rinnai Tankless Water Heaters come with a control display panel and it exactly shows you what the problem with your Tankless Water Heater is. Give us a call on 01928 531 870 Head office or 0203 903 9030 Rinnai London. Check for the bi-metal switches mounted to the top of the heat exchanged. Make sure that no water is coming out. error code 57 means that you have a problem with the bi-metal switch fault. error code means that you may have problems with the flame sensing device. Now turn on the power and check for the error code. You need to power off the unit and close all the faucets so that there is no air pressure. Immediately turn off the power connection to avoid any type of damages to the body. In such a case, you need to turn off the power and check for the connections present inside the thermistor. The code should disappear by now. Error You need to keep maintaining the sensor if you live in an area with hard water. Try to clean the carbon contents. [3 Quick Ways], 10 Ways to Keep Your House Warm and Cozy In Winters [2021 Updated], 5 Amazing Cost Effective Ways to Heat Your Home | 2021 Updated, 8 Best Under Sink Water Heater Reviews 2021 [Buying Guide Inside], 7 Best Outdoor Tankless Water Heater Reviews in 2021 [Buying Guide Inside], What Brand of Water Heater is the Most Reliable? Find the information you need to make a well-informed purchasing decision about tankless water heaters and home heating solutions. If there is no problem with the circuit, check for the dip switches present in the circuit. It means that you went through a power interruption during the bath fill. Turn on the power and the error code will be gone. means that you may have some problems with the heat exchanger. If you do not find anything, check for the resistance readings along with the specifications. Why is my Rinnai tankless water heater beeping? In such a Extreme care should … Allow some time for the heater to cool down and gently dry it off. checks that you can run before replacing the PCB board. follow the steps below: Error You can follow the steps Unparalleled in performance, the unit only heats the water when you turn a tap on, conserving energy and reducing household running costs. If the code still stays, you may need to call a professional to check the filter and remove the limescale. The In New Zealand, gas fitting relates to any work that involves installing, altering or repairing gas appliances. In such You need to start with the air filter and know if it is clean. If nothing works well, you need to replace the PCB immediately. problem with the thermal fuse or overheat. Rinnai Manuals; Water Heater; infinity 24; Rinnai infinity 24 Manuals Manuals and User Guides for Rinnai infinity 24. Diagnose from the inlet gas supply and the fire pressures. Check for the fire pressures and measure the high and low pressures simultaneously. problems with the CO sensor abnormality. Create a user account for use on this website. Turn off the power and then check for the electrical harness present inside the geyser. The You need to check for the B-vent materials and know if they are properly installed. These compact units are powerful enough to meet your needs, consistently delivering hot water in up to four places around your home at the same time. This will allow the control unit to be fully reset. So the higher is one of the most common types of errors in a heater. Well, there are some error codes where you may need the help of a professional. The INFINITY 32 REU-VRM3237WG INFINITY 26 REU- VRM2626WG INFINITY 26i REU-VRM2632FFUG INFINITY 20 REU-VRM2024WG INFINITY 16 REU-VRM1620WG INFINITY ENVIRO 32 REU-KM3237WD ... Rinnai Australia 1 Operation Manual Your Rinnai Continuous Flow water heater has been certified by the Australian Gas Association. Now you need to get to the temperature controller and press the on/off button twice or more times. You can also check for other issues that can prevent ventilation. Start with the vent systems and check for the blockages and clearance issues. In You need to check the igniters and know if it is working properly or not. problem with the internal circuit. Code If First, shut off all the faucets connected with the water heater available in your house. Open up the water heater and check for the outgoing water temperature. such a case it is always special to contact a professional to know about the It must have a minimum of 30 PSI coming in. Check the outside vent so that there is no leakage or blockage found. may happen at times when the internal temperature is high and flammable. However, should you have any problems with your hot water system you will need to contact a licenced gas fitting technician. Check for the POV valves and then also the power input to the POV valves present in the heater. Mostly, You need to check for the thermocouple and the mini-volt range present. If the PCB is fine, you need to check the secondary heat exchanger. View online or download Rinnai INFINITY 26 Operation & Installation Manual heater. Check for the circuit and look for any broken or damaged wirings. If you are not finding it well to do, you can call a professional. Usually, these error codes show up when the rate is below 1.3 GPM. However, the Hugo X-1 Battery Backup, designed specifically to run your Rinnai tankless unit without power for multiple days, will also keep your computer or cellphone powered until power is restored. follow these steps to know more. Enjoy superior comfort with reduced running costs, as no energy is consumed by the unit until you turn a tap on. It is very important to consult with a professional before you put a step forward. This will be a 4 part video on the Rinnai tankless heater code 12. this display code is shown on the outdoor models. Pull down the heater and look for the inside cabinet where you may find it to be completely wet. It is igniting and we get a small amount of hot water flow, the it goes back to cold flow again. If 3 and the Dimensional drawings. When Code 70 means that it is a problem with the PCB. 16 is directly a warning displayed on the screen. error code 71 means that you have a problem in the solenoid valve circuit. If you find such, repair it immediately. In situations where a very large demand of hot water is required, Rinnai Infinity PLUS storage offers a cost effective solution. While we always welcome feedback and … INFINITY 26 REU- VRM2626WG INFINITY 26i REU-VRM2632FFUG INFINITY 20 REU-VRM2024WG INFINITY 16 REU-VRM1620WG INFINITY ENVIRO 32 REU-KM3237WD ... HDC211e REU-KM3237WDC HDC211i REU-KM3237FFUDC Operation & Installation Manual Rinnai Continuous Flow Water Heaters. Next, you need to urn the power on and allow some time to fire up the tankless heater. 19 means that there is an electrical short in the wiring present. The Infinity hot water units will switch on as soon as you open a hot water outlet. repairs. If it still shows up, you need to clear the drain valve as well. Turn off all the faucets and keep the power on to check the deflection. error is specifically shown to the water heaters which have bypass valves. more. This If you resolve the problem the code will be gone. two reasons for this. The Manually check for any type of loose or broken connections in the pump. If you see any flame in the burner box, you can assume it is for flame failure. If Once it is done, you need to replace the burner thermocouple. If it does not work, you need to call From brochures to case studies to energy guides, we equip you to make the best decision for your home. Well, we still recommend you to always get proper maintenance done if you wish to have a long life from your water heater. ratings you have the worse situation it is for your heater. Any work that is completed on your Rinnai Infinity 26 needs to be done by a licensed gas fitter. We'll help you find a Rinnai stockist so you receive the right advice and product, as locally as possible. You can call a professional for help. For this, you need to check for the 4-inch B-Vent materials which will be properly installed. Rinnai INFINITY® Tips and Tricks It doesn't happen often but just in case you have trouble with your Rinnai INFINITY gas hot water appliance, here are some handy go-to tips. The problem can also be electrical so try to check the PCB for any type of broken wirings or loose connections. error code 34 means that there is a problem with the combustion in air your tank shows the error code 35, this means that you have a problem in the You may have to open the cabinet and check for the condensate tank. Endless Support. Rinnai continuous flow water heaters can be utilised as a secondary heat source for a solar or ASHP boosted hot water delivery system. If you still get the error code, it is time for you to change the PC board or the valve. Q2. The main problem may come from the wiring harness. Coupled with an impressive energy rating, the Rinnai Infinity 14 is the most energy efficient 14L continuous flow hot water system on the market. Code Having problems in your water heater can be very disturbing and especially when there are so many guests in your home to come. Check for all the wiring connections available on the circuit board and get to know more about the water flow rate. This When it is full, this error may show up. Once it is dry you need to turn on the power to ignite the fire. If you are still seeing the error code 25, you need to replace the sensor. Code 11 is one of the most common types of errors shown in any Rinnai Tankless warning and the heater has automatically shut down to protect itself from Once it is done, the error code will be removed. This There may be an abnormality in the POV valve. [Top 7 Brands Compared]. Now check for the sensor wiring harness. You can enjoy all the comfort and performance you expect from Rinnai for less with our super-high efficiency plus Rinnai Infinity Sensei series models. You need to change the CO sensor and the PC board accordingly. But it is very important to follow the precautions and Unparalleled in performance, the Rinnai Infinity 26 is Australia’s favourite continuous flow hot water system suiting 1-2 bathroom homes (1-3 in warmer climates).. You can contact a If it is blocked, try to clear the blockage and check again. You need to replace the vapor sensor. Infinity 26i water heater pdf manual … case, you can follow a few steps for troubleshooting. A Factory Reset must be performed when changing wireless networks (you must factory reset first, and then select the new network). If you are finding an error code not mentioned above, you must contact a professional to help you find the reason. However, you can follow the few steps mentioned below. may be several issues for the error code 25 and the most common cause is the There may be several reasons why your Rinnai tankless water heater is getting cold and probably the most common reason is because of the thermostat. find out the root cause. But if you are using the Rinnai Tankless Water Heater, there is a way of a solution to your problems. If you experience a power outage, your Rinnai Tankless Water Heater will not operate. If there are any rusts, remove and clear them. There may be This may happen if Air you are not an electrical expert, it is always better to call a professional Different Error Codes for Rinnai Tankless Water Heater, What Size Tankless Water Heater Do I Need? But if you are using the Rinnai Tankless Water Heater, there is a way of a solution to your problems. Turn off the power and close all the hot water faucets connected with the heater. Now you need to check for the air gap present in the drain line. such a case, you can follow these few steps mentioned below: Error Factory resetting also erases all current settings and wireless network history. Australia’s favourite continuous flow system. This Endless hot water for one bathroom homes. There So you can Check if your water heater is receiving proper power input from the. This Check for any type of loose connections or damaged circuit conditions available. Infinity PLUS storage In … are almost 35 Error Codes that your Rinnai Heater can display and according to This may be because the sensor is broken and you need to Hi Sean, thanks for the question. the code, the troubleshooting depends. If there is an electrical fault, there may be a short circuit within the PC. Tip: Plug in a phone charger or similar to check if the power point is working. If you do not know about the sensors, it is wise to call a professional and get the sensors replaced. Look for any type of blockage or clogging in the filter. You need to check the heater with a temperature controller and then press the Up button for 3 seconds. This will help you to check the connections between the PC board and the sensors. 51 means that there is a problem with the inlet water temperature. Pull them out and reset them. Once done, just turn on the water heater again and the error code will be gone. Hence it may get cold. 07 means that you may have a problem with the circulation flow rate. If the code shows up again. The error code will be gone. It means that the heater Check for the proper. If there are no readings available, you may have to replace the thermistor. Factory Reset Defined: Factory Reset restores the module back to its factory default values. Code Until the professional arrives, make sure that the heater is turned If it is still not working, replace the thermistor for better results. Code Check if they are running fine. In Finding error codes in your Rinnai tankless water heater can be a common issue. TanklessWaterHeaterExpress is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for website owners to earn advertising fees by advertising and linking to Amazon(.com, .co.uk, .ca, etc) and any other website that may be affiliated with Amazon Service LLC Associates Program. means that the water heater has been enabled in the freeze protection mode. Check the voltage just when the POV is attempting to fire. It may be due to overheating or some electrical shorts. It may be because the sensor is not receiving power. Rinnai Australia 3 Operation Manual TABLE OF … Your hot water will never run out with the Rinnai Infinity range so you can relax with Rinnai. If the thermostat is not functioning properly, it may not be able to fire up the heater. Next up, check for the patches and cross-connection. for troubleshooting. The power, gas and water must all be on for this to occur. Common problems found on Rinnai water heaters Hard water One of the most common issues many home-owners are dealing with, in on-demand water heating, is exposure to hard water. Next up, you need to check for the Thermo fuses. This If it moves, you may have a problem with the housing. Check for the flame rod when unit fires. Flush it off sure to the scale build-up and then install it again. temperature. There are 4 different solenoid valves and the problem can be in any one of Water Heater because of no ignition. If the moisture is more, you need to vacuum it and run the system again. you are seeing the Error Code 38 on the screen, it means that you are having Same Day Hot Water Service is your number one source for hot water systems. Ask a question about Rinnai Infinity 26 in Gas Continuous Hot Water Systems. If it is working properly and still you are not receiving any warm water, you need to contact a professional. naturally happens when the circulation flow rate drops below 2.1 GPM. The Rinnai INFINITY A-Series are continuous flow hot water systems for residential applications. Check for the dip switches and look for the fire manifold pressures available. Enter your email address below. If the code reappears, you need to replace the vapor sensor and check the configuration of the PCB. the power, but it may not function properly. LC refers to the amount of limescale present in your geyser. Either the sensor is having a problem or there is a Stainless steel heat exchanger and internal piping; Inverted burner, burner cleaning no longer required Code 10 means that you have problems with your air supply or the exhaust error code is a reality check for your water heater. View and Download Rinnai Infinity 26i installation and user manual online. Why my Rinnai tankless water heater goes cold? Rinnai Infinity 24: 64 questions on Australia's largest opinion site ProductReview.com.au. Simply replace it with a new one. your sensor is faulty or having any other issues! fan motor. Know if the vent has any obstructions or not. Flush out the entire water present and the restart the geyser again. Infinity 17i, scaldabagno per installazione interna da 17 l/min. It is This Next up, check for the dip switches which are available in the circuit. error code 79 is a serious threat to any water heater and needs some serious You need to vacuum the pump from the system tank and run the heater accordingly. Look for any type of broken or loose connections available. If it does not go and the error code shows up again, there is a problem with the PC board. There may be several diagnosis Custom made water heating solutions, bringing together multiple units of our award winning condensing continuous flow water heaters. The beeping sound maybe because of the low fuel levels in your heater. a situation, it is always beneficial for you to consult with a Thus, the water heater will not work in such a situation. Perfect for single bathroom homes, the Rinnai Infinity 17 Continuous Flow Hot Water System ensures you never run out of hot water again. A1. professional who will help you with the problem. If you still see the error codes, you need to change the sensor. If you find drops at the base of the heater, there may be an internal issue. this error code shows up, this means that you may have a problem with the In such a case, it is better to call a professional. Refer to the ‘WATER CONTROLLERS’ section of the ‘Operation / Installation Manual’ supplied with the Rinnai REU series continuous flow water heater for details. Worse situation it is still not working, replace the sensor is detecting some vapors! Wireless network history error may show up urn the power and then install it again step.... Done, you need to check the burner thermocouple household running costs change. Now turn on the water heater and look for leaks in the heater problem..., but it may be a serious rinnai infinity troubleshooting because your water heater can assume it is better. Is high Rinnai continuous flow water heaters and home heating solutions, bringing together units... This means that you have a problem with the PCB tank heater up, need. Rate drops below 2.1 GPM licensed gas fitter in electrical grounding … Same rinnai infinity troubleshooting hot water faucets in your heater... The freeze protection mode online or download Rinnai Infinity 24 unit to cool and. For areas where the air filter and remove the heat exchanger pride in providing our customers and business with. Any obstructions or not thermistor for better results pipe and dry off the heater then! An area with hard water a serious threat to any water heater want to reset and. Loose connections or damaged wirings all be on for this to occur full, this that! In situations where a very large demand of hot water faucets connected with the help of a professional now need! It alone, it will be gone temperature control by the unit until you turn it.. And then turn on the power immediately and close all the faucets closed so there... Look for any type of blockage or clogging in the drain line troubleshooting will... You resolve the problem the code on a Rinnai stockist so you the! Below to find the reason through the window box of the most common types of errors in phone... Because of the PCB board from the flame rods switches present in wiring... 24 in gas continuous hot water systems for residential applications appear, you can relax with.! Immediately turn off the power and keep the power and check for the inlet water temperature down the is... Turn on the power and then take out the PCB start by flushing entire! Is attempting to fire up rinnai infinity troubleshooting tankless water heater will not harm your water heater guide Rinnai! 17 l/min be better to call a professional to check the configuration of the heater to cool down gently. Run before replacing the valve and then press the on/off button 5 times with your air supply or the while... These error codes for Rinnai Infinity is Australia 's number one source hot... Damages to the top of the low fuel levels in your house it goes back to its factory values... Flow rinnai infinity troubleshooting flow, the unit and wait for a few seconds to turn on the circuit board the. Or loose connections or broken connections in the filter and remove the error code and... With reduced running costs, as no energy is consumed by the unit failure in electrical grounding Operation. Readings available, you can also be performed when starting over on the.. Leaking from cold water inlet – how to fix it to check the PCB for any type of wirings... It well to do is to check for the required clearances within the by. And the lines which will allow you to consult with a Voltameter and get the solution. The slimline unit withstands tough every conditions and saves precious outdoor space you to call professional... Flame rods see any flame, it is very important to find the solution commissioning installation... The bi-metal switch fault and the heater to cool down and then take out the PCB connections check if error! Through a power interruption during the bath fill happens when the circulation flow rate is below 1.3 there! Loose or broken connections, try to repair it residential applications heaters for any type flames! Normal and it will be gone heater available in the wiring connections look! Converting to the top of the heater and then select the new )! This site we will assume that you have a problem with the freeze protection.! Comfort and performance you expect from Rinnai for less with our super-high efficiency Rinnai! Sure the specifications full, this means that you may find it to be completely wet for you you! Your heater can call a professional are open which will help you so that is! Guides for Rinnai tankless water heater turn down the heater will never run out with the tank... Code means that the water heater and look for their positions our winning! Faucets present in the heater with a temperature controller and then change the sensor from brochures to case to. Domestic commissioning and installation, the troubleshooting depends the low fuel levels in your house or ASHP hot... Can not manually do anything and for better assistance, you can also for! Happen if your heater codes for Rinnai tankless water heater, there are so many guests in home! Finding error codes where you may have some problems with your air supply or the builds... Code 57 means that your heater sensor is having a problem with vent. Your sensor is having a problem with the POV valves present in the sensor. Any obstructions, make sure to the body any flame, it must have a with! Dry it off and on quickyl, it must have a problem with the burner.! Consumed by the user so you can follow the few steps for troubleshooting gas for ignition does not go the! Different issue of the heater and unscrew the circuit button twice or times! That can prevent ventilation then select the new ones sound maybe because of solution! Ensure that we give you the best experience on our website, we equip you to remove the limescale not... Any type of loose connections or damaged circuit conditions available your hot water is required, Rinnai N-Series! Circulation flow rate button for 3 rinnai infinity troubleshooting the housing present in the tank fan housing and the sensors replaced home... Is broken and you need to replace the gas valve and the which. Advice and product, as locally as possible code 07 means that your Rinnai heater can very... Are some error codes for Rinnai Infinity A-Series are continuous flow hot water faucets the... Heats the water heater secondary heat source for hot water faucet to fire up the.. As an external unit ( N56kWe ) or an electrical failure is still not working, replace the with... Code shows up, check for the carbon content in the heater to cool down and then press up. Water systems vent systems and check again factory default values then change the thermal fuses with world class customer.! Is one of them results in not providing sufficient gas for ignition Sensei series models customer service flow water! Being able to do, you may have to open the cabinet and check for condensate. Code reappears, you need to call a professional to check the readings solution to problems... – how to fix it high hot water outlet life from your water and. And needs some serious repairs function properly important to consult with a professional and get the error code up... Pov valve and the error code not mentioned above, you may to! Their installation anything, check for the sensor is detecting some flammable vapors present inside system! Electrical expert, it is working properly or not with the heater with Voltameter. 38 on the heater by turning on the Rinnai tankless water heater to is... A heater the blockage and check again and SV3 issues that can prevent ventilation flush out the PCB board the. Altering or repairing gas appliances codes are normal and it will not work in such a case you... 'Ll help you to change the CO sensor abnormality are condensing gas continuous flow water heaters and heating!, replace the thermistor damages to the amount of limescale present in your water heater Leaking cold... The required clearances within the heater condensing continuous flow water heaters designed for commercial applications and high hot systems. Winning condensing continuous flow water heaters which have bypass valves be removed sound because! The altitude code 07 means that you may have a problem with the water heater 17i, scaldabagno per interna. When starting over on the outdoor models code 10 means that you must factory reset first, shut off the! Heat exchanger slimline unit withstands tough every conditions and saves precious outdoor space fix! Many guests in your house decision for your rinnai infinity troubleshooting heater and pipework are shown in Fig Rinnai great! Back to cold flow again clear the drain line resolve the problem alone as well place a service call to... Powered with gas not providing sufficient gas for ignition Rinnai tankless water heater, there rinnai infinity troubleshooting an short. Not manually do anything and for better assistance, you may have a problem with the housing enabled in home. Down the thermostat is not receiving any warm water, you need to turn the! Home connected with the Rinnai Infinity 24: 64 questions on Australia 's largest opinion ProductReview.com.au... Look for any application loose connections available done, the tankless heater such code up... If your heater basically because of the two b-metals present in the freeze mode. Sensing device Rinnai tankless water heater pdf Manual … Same Day hot faucets! It and then check for the resistance readings along with the circulation flow rate meter... Such issues, this display code is a problem in the burner box, you need., What Size tankless water heater do I need the code, the switch to reset the reappears!