It is an indication that your warm water outlet thermistor has some problems. If the problem persists after reset, replace the APS as soon as possible. In fact, however, the whole machinery of the hot water recirculating pump has to be activated for this to happen. If that fails, then the pump impeller might have disintegrated or the system water pressure may be below 0 at the pump suction causing the pump to cavitate. Turn off the power before removing the filter. I have the newest version pcb since I just bought the tankless. I have a tankless water heater with an external recirculating pump at the heater and a crossover valve under the kitchen sink. There are no error codes showing. If your system displays this code, you need to confirm the water pressure is within good ranges. (State-By-State Chart), How To Convert Therms To kWh? Troubleshooting Navien NPE-240A Internal Recirculation Pump - YouTube 0:00 / 4:21 Troubleshooting Navien NPE-240A Internal Recirculation Pump RCGooner2002 240 subscribers Subscribe. Way too many variables to even begin to diagnose online IMO. Depending on the size of the pump and installation difficulty, the average cost of a hot water recirculation pump costs anywhere from $200 to $800 (installed). It may not display this or other websites correctly. $197.08 $ 197. Similarly, if the return from the loops is mixing with the boiler loop system and cooling off the water before it gets sent to the recirculation pump, you will face this problem. We can go from there with up to 3 hours of dedicated live coaching on the telephone if needed. He has a good standing reputation for superior skills in heating, air conditioning, hot water tanks, and indoor air quality systems. Did you mount the contact switch next to the Navien? By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. Turn off the recirculation when the house is not occupied, in order to save even more energy. When attempting a flush of the system, I shut off the hot and cold valves that lead into the heater. Your Navien Recirculation Pump will make a humming noise like a refrigerator if you dont bleed the air out of the recirculation system. Worst case is your plumber might have to call since they require them to maintain it. Is there a recirculating pump for the tankless water heater known as Trutankless? Check the wiring and cold water inlet two thermistors and make sure both are in good condition. Navien ComfortFlow is the first and only system that incorporates a built-in insulated buffer tank and recirculation pump. 10.6 Maintenance 10.7.3 NPE-180A/240A Pump P-Q Curve The Navien NPE-180A and NPE-240A water heaters that are used . It should come out of the hot water port. Plug n play (after removing front panel to access the plug). However, whenever I turn on the cold water at the kitchen sink the tankless unit starts to run (heat water) even though I dont want heated water. Hi Mike, we think about water as hot vs. cold. Make sure the major electrical cord is grounded correctly. Disconnect the power supply to the water heater. All you have to know is how to turn it off. Besides, the E782 indicates that there is something wrong with the main panel communication. All you have to do is browse through our guides, answers and personal experience documentations to find out what you should (or shouldn't) do when going off the grid. Now, you have to know the hows for reducing damage. First, place a thick rubber between the pump and anything it will be mounted on. Where does this (supposedly) Gibson quote come from? 14 Culprits To Check For Now, MMBTU To MMSCFD Calculator For Natural Gas + Chart, 8 Best Infrared Heaters For Indoors, Patios, Garages (With ECO Thermostats), AGM Battery Voltage Charts: 12V, 24V Deep Cycle Battery Voltage, Lead-Acid Battery Voltage Chart For 6V, 12V, 24V, 48V Batteries, Natural Gas MMSCFD To MMBTU/Day Calculator + Chart. It will make your water recirculating pump much smarter. The operations manuals above cover all Navien NPE-A and NPE-S series condensing tankless water heaters. Second, you can use a flex connector to isolate the pump. Turns out if you "disable" schedules when in always on mode it stops the every 30 minute schedule the device uses when in Always On mode. Ensure that all hot water faucets are closed, and ensure that the internal circulator and any external circulating pumps are off. if you do have an external recirc line BUT it was installed when the Navien , then see if you can find where the recirc line connects to the hot water line - maybe it's serving a portion of your fixtures and the other fixtures are not benefiting from the recirculation. and our This comprehensive guide helps to make the operation and repair of your heater easier. There is a circulator pump, but it still takes a long time for hot water to reach the upstairs bathrooms. This gives you a negative return on investment (ROI), so. I connected the Hot Button control board to the main PCB per the instructions. Get in touch with Navien technical support or a professional heater repairman to fix the issue. W2 Wire Thermostat Wiring (2nd Stage), Thermostat Wire Color Codes For 3-8 Wire Thermostats (Color-By-Color), How Many Therms Of Gas Per Month Is Normal? 3. Fortunately, Navien water heaters recycle hot water and always provide hot water. However, that shouldnt happen if you have turned the pump off. Is this a common drawback with the under-sink crossover valves, for the heater to turn on when a cold water faucet is turn on? This may temporarily help to remedy the issue. Otherwise, this will cause the shut-off valve to get damaged. Examine and wash the intake air filter underneath running water using a toothbrush. If a hot water faucet is open, you can adjust the temperature only from 98-110 F (37-43 C). Hello Frank, one of the disadvantages of recirculating pumps is that you have to wait for cold water a bit. How do I align things in the following tabular environment? It has a timer that turns on the pump at regular intervals, mostly during peak usage times. However, whenever I turn on the cold water at the kitchen sink for a few seconds the tankless unit starts to run (heat water) even though I dont want heated water. Read the users Navien nr-240a manual to get information on how to flush the heat exchanger and reset the remote for Navien tankless water heater. That may present a problem in the summer when you need cold water; turning the pump off during the summer months solves the problem. I installed this system a few days ago and I've been trying to trouble shoot the noise that's coming from the re-circulation pump. Then, use the arrows to set the desired temperature. (std. Follow the steps below to clean your Navien water heater; Note: If you are unsure of your ability to handle this task, hire a professional to clean the heater. We might be able to do something about it. Normally uncontrolled pumps are used as the flow variation is relatively small. The pump will cost you $200 to install, $5.50-$32 to operate, will waste $160-$400 per year and will save you $4-$50 on your water bill. For example, you may damp it into a bathtub, pushing the water through the isolation side on hot. Pump the white vinegar into the cold side, up through your water heater, and out the hot side. The recirculation timer is set to operate ever 15 minutes, even though we are often not at the property. Navien tankless water heater recirculation March 31, 2016 At the push of a button, Navien 's HotButton accessory activates the internal recirculation pump and gas-fired burner to heat up the water in the supply lines. The function of a recirculating pump is to ensure that hot water is always available as close to the consumption point as possible, in order to reduce water waste and to increase comfort. Set the pump in the bucket and plug it in. The recirculation pump will make a squeaking noise if the installer fails to install the primary loop correctly. Recirculation Settings by pressing down the OK button. 30000466A Navien Circulation Pump NAPU9GLPCT33 . my understanding of the Navien with internal recirc pump is that they work with either an external dedicated return pipe or an internal bypass loop located within the water heater cabinet. This is where the timer and temperature sensor come in. Also, check the feeder valve and pressure relief valves activity. This issue is more common in older heater models. Heres the deal on how to get the hot water faster from a water heater: When we turn on any faucet, the hot water needs to travel from the hot water heater to the faucet. Unplug the power to your Navien water heater. Navien NaviCirc Recirculation Valve Description How it works Specifications Dimensions Please see below for important warranty information and a list of models that this part fits. I have an NR240A for about 10 years now. Low gas supply which prevents proper heating of water, Damaged flow sensor preventing proper supply of gas to the heater. Obviously, everybody loves immediate hot water from their faucets but this luxury can be quite expensive. Just like everything with these three characteristics, it is time-consuming and challenging. Check this too: Electric RV Water Heater How to & Troubleshooting Guide. Tankless Water Heater Breaker Size Calculator: What Size Breaker? Are these pumps just a luxury that enables you to get hot water lightning fast, or do they actually save you money? $44.90. He obtained his Bachelor of Science degree from the University Of Texas at El Paso. If the issue persists, contact your original installer or an NSS to service the sensor. However, the plumber branched this off into the circulation water inlet. Timers and wifi sockets are quite cheap. Once again, there are a few different things it could be. Make sure there are no loose connections. Once the display stops flashing, the temperature setting is stored. Turning off your water recirculating pump reduces damage. Costs associated with hot water circulation pumps (parts + installation + DIY savings). However, the plumber branched this off into the circulation water inlet. Turns out, make sure you isolate the recirculation pump from the vibration. Water recirculating pumps just circulate the water; the water pressure should stay the same. Neither reason is likely to be correct but we would need a much more in depth knowledge of the hot water distribution system and the circulation line in particular. Navien Flow Sensor. I mounted the contact switch inside the cabinet per the kit instructions. Can I swap out the mainboard in the NR240A to an NPE240A board to get all that features? Others run on a timer. The consent submitted will only be used for data processing originating from this website. Shut off the appliance for half an hour and then restart. But it will be best if you contact a certified plumber to fix this issue. What Parts Are In The Hot Water Circulation Pump Kits? Like with most things, a lot of noise coming from your hot water recirculation pump isn't a good sign. Works great and saves the copper pipes. Next, clean the dirt-trap. Start by removing it from the heater so you can clean it properly. 6\" Magnetic Nut setter Sethttps://amzn.to/2JdAckuMilwaukee 48-22-6330 Tongue and Groove Pliers Sethttps://amzn.to/3kfch0RGoPro Hero 8 Black Action Camera with Accessory Bundlehttps://amzn.to/34AGamfVeto Pro Pac Tech XL Tool Baghttps://amzn.to/2U1QqPFOLIGHT Bundle H2R LED Headlamp, 2300 Lumens Rechargeable Flashlighthttps://amzn.to/370rGiqAmprobe AMP-320 Clamp Meterhttps://amzn.to/2GNxUHeFluke 117 Electricians True RMS Multimeterhttps://amzn.to/3iFZP9tMilwaukee 2364-20 M12 Roverhttps://amzn.to/2HNvitKMilwaukee Rocket light 2132-20https://amzn.to/341OTPm #MIHeatingGuy #MichiganHeatingGuy Turns out that it was the temperature of the return water was high enough to stop the recirculation. Both options use less energy than a continuously-running system. 2. Place a bucket underneath it to catch any water that drains when you remove the filter. Do not advertise or try to compare pricing. Continue reading below Our Video of the Day 1. Below are different Navien water heater error codes and their solutions; Navien error code 003 how to fix indicates that there is an ignition failure in your unit. Yes, you can turn off your hot water recirculating pump. I am guessing that he only returned the HOT line, hence the delayed time in "INSTANT HOT", as the Naviens are sold as well as there 96% efficiency!! Years of experience in the HVAC field have taught him many lessons, not the least of which is that the value of quality and knowledge far exceeds any promised initial savings. How? It is located on the lowest corner opposite the on and off button. With the NRCR you can set your own schedule with a remote accessory and tailor the integrated pump to your lifestyle or scheduled needs. On-Demand Mode. What kind of range do you get from the remotes? We hope we were able to help you out with our guide. You must log in or register to reply here. 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