Question about Noritz 6.3 Gallon Residential Tankless Water Heater - N-063S

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There is a chatter noise sometimes when its running

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Will be coming from the fan service or replace

Posted on Oct 12, 2009

  • 3 more comments 
  • mrhotandcold
    mrhotandcold Oct 12, 2009

    will be coming from the fan service or replace

  • mrhotandcold
    mrhotandcold Oct 12, 2009

    will be coming from the fan service or replace

  • mrhotandcold
    mrhotandcold Oct 12, 2009

    will be coming from the fan service or replace

  • mrhotandcold
    mrhotandcold Oct 12, 2009

    will be coming from the fan service or replace

  • mrhotandcold
    mrhotandcold Oct 12, 2009

    will be coming from the fan service or replace

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Like a buzzing noise? Check valve where water lines connect at back will make a buzzing noise, if you only hear it when running hot water and not when running cold. Remove and replace it after shutting water off, and draining tank down. Be sure to shut off any hydro to electric element prior to draining.You can buy a replacement check valve, or just put a short 1/2" pipe nipple in there instead and reconnect your line, and refill it. noise should be gone .

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New Rheem Fury Guardian System 50 gal water heater model 42V50-40F. Loud low humming or drone sound when in operation. What can this be?


Hi,
Is the noise when the water is running or when the burner is running???

If it is just the water then the noise often is the flow checks inside the tubes going to and from the heater...

If it is the burner, then the noise could be the gas going through the gas valve...a bit of moisture or dirt can sometimes cause noises...usulally will correct its self after a bit of time...no worry...

poping crackling sounds and such are common with mineral builsup in the bottom of the heater....
Flush the heater and get the dirt out....

sizzling noises sometimes happen from condensation dripping onto the burner....gain not a problem...

sometimes the gas properties will cause the gas to make noises when going through the gas orifice into the burner... usually this is air or a LP air mixture known as "citigas" that will burn like natural gas but really isn't and it will make noises such as your are describing...again no problem...

Ultimately the noise you hear is not a problem but can be irritaing if the heater is where you can hear it easily...

Feel free to comment back if you have any more questions...

heatman101

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try by draining tank. it may have sediment build up in it. heres how. go to www.ehow.com/how_5544402_drain-hot-water-tank.html this site will explain it better. have a good day! Sediment can drift into recirculation lines, jam open check valves, and cause the recirc pump to stick until it burns out. it causes noise, sometimes enough noise to annoy, or even frighten, people if the tank is inside a dwelling. The noise is caused by small amounts of water under the sediment layer turning to steam bubbles, which then collapse violently.

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No hot water this morning. No warning to problem


Reset the breaker manually to make sure they haven't tripped sometimes they may look ok but they aren't. Once you do that, check your voltage to the thermostat and leaving it, if you don't have voltage leaving then replace the thermostat. If you do check the ohms on the elements they should read 5 to 10. If you get another reading replace them.

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