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

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I have a nortiz 063-s tankless, and it won't stay on...I'm thinking it's the computer, please help

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  • Chris Sellers
    Chris Sellers Jul 01, 2010

    is the burner indicator flashing? have you checked the incoming water filter?

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  • 73 Answers

There are several things I would look for:
-Flashing burner light (indicates an error code)
-Trying flowing more hot water. In the summer alot of times you'll flow less hot water because your cold water is warmer. If you flow additional hot water at your shower, it will ensure the unit stays firing
-If the unit doesn't fire at all, you may have debris in your cold water filter or a stuck flow sensor. Call tech support to help you with cleaning a flow sensor.

Posted on Aug 01, 2010

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