Navien tankless water heater problems are unpredictable and different to understand. If … • Ensure that the shut-off valves on the hot and cold pipes are open. Replace the thermistor, 3. Is that normal. 1. • Check for cross plumbing between the cold and hot water lines. In most cases the solution is to have a plumber install a check valve in the water line to prevent other plumbing fixtures from interfering with the flow of water to the water heater. Make sure the power is on, and plugged into the outlet with the correct voltage. Fan vibration noise: Vibration caused due to defective blower. Abnormal activity of the gas pressure sensor. It then comes and goes throughout the the time the heating is on. Ensure that the outdoor reset curve is configured properly. Navien tankless water heaters aremore efficient and take up lessspace than bulky tanks. The water from the hot water faucet is not hot enough. I have tried to get my HVAC person … All Navien NHB and new NFB-H boilers have Navien’s advanced burner system. I just bought a Sears water heater and it was making a loud whining-droning noise. • If intermittent noise occurs during operation, check the fan for debris. Is the filter on the heating side restricted? For example, if I turn the hot water on for my kitchen sink, no sound. But if the hot water is turned on for the bath tub, or for the laundry, it immediately starts whistling. This means that your system’s blower is trying to pull in a certain amount of air, but it is incapable of doing so. Make sure the boiler is turned on. A few weeks ago my Navien on demand water heater started a high pitched whistling sound ONLY when the hot water is turned on in large amounts. Check the dip switches on the front panel and PCB. Add make-up water to the system if necessary. The industry’s largest turn down ratio means easier installation with multiple zones while maintaining high … Check the heat exchanger; a flush may be necessary. Is the system running for domestic hot water (DHW)? Called and said making noise so i go out and when it fires it got a loud whistling sound coming from thr exchanger area. Navien tankless water heaters & boilers for residential and commercial applications use innovative high efficiency technology to provide a comfortable environment. £45.47 excl VAT It does not vibrate until high flow and high flame, typical of a shower or washing machine fill cycle. The temperature of hot water at the tap is low while the temperature is high at the hot water outlet. 1. Check tower on board for loose connection, 1. 2. Installing a water softener system may be necessary. Check the power supply to the remote controller terminal. Check the heat exchanger; a flush may be necessary. The table below, which contains descriptions of faults, their causes and solutions, can help you. Check the heat exchanger; flush with a cleaning solution. 1. Check the hot water temperature setting on the front panel. Q: I own an older vehicle with higher mileage. 2. 1. This is propane fueled. Seven ways to pinpoint that high-pitched, whining noise. Product Code: HB1061. It worked perfectly fine for several months, but now started making loud vibrating sounds on start up, and - much more bothering - some 5-10 minutes after I turn off hot water.Basically, I turn on hot water (even form some 30 seconds), then turn it off … High-pitched squeals or a grinding noise from a furnace or an air conditioner could mean that a moving part is not moving the way it should and requires quick action. Popping sound inside the heater is the result of hard water and sediment buildup at the bottom of the tank and unit’s components. The Importance of Having a Professional Fix Your Heater During warmer periods, the whistling increases. Live on March 16th, 2021 at 4pm ESTWe will host a virtual launch introducing our new water heaters. Check the heat exchanger: flush with a cleaning solution. (oh no) Well, my boiler is … If there is a problem in power supply, check the output voltage of the PCB, and take the action separately for wiring error and defective PCB, respectively. 2. When the unit is heating for DHW, the heating side does not work. We've gotten calls about clanging, banging, knocking, thumping, whistling and a lot more. Abnormal Auto feeder valve (make-up water), Abnormal operation: water pressure sensor, Hot water outlet: thermistor open or short, Cold water inlet: thermistor open or short. (the Sears store told me it was the flue that the non Sears plumber installed- this was baloney) I called Sears tech and the repairmen said it was a known problem in a gas valve- took him 10 minutes to fix it. Endless hot waterand comfort...when you want it. • Check the boiler's temperature setting. high capacity combi-boilers providethe ultimate in energy and space saving ingenuity for whole house heatingand endless hot water. The popping noise comes from the water trapped under the mineral deposits. I called Navien directly and their tech support had us remove the fan and start the boiler, so we could confirm that the vibration is coming from that (and not anything to do with combustion).
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