Cleaning the flame rod assembly on a Navien NPE unit

This is a common problem on any tankless unit weather is in interior or and exterior.
This is commonly known as flame or ignition failure.
Most of the time by cleaning the buildup on the flame rod assembly you can fix the problem. If you need to change the assembly the part number is
3002665A
If you have a question, please E-mail me at [e-mail]
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I hope you enjoy the video,
Mike
PLEASE USE A LICENSED PLUMBER TO INSTALL YOUR TANKLESS AND FOLLOW ALL STATE AND NATIONAL PLUMBING AND GAS CODES. FILE A PERMIT AND OBTAIN AN INSPECTION WITH YOUR LOCAL BUILDING DEPARTMENT.

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Suggestions for when the unit is older and the gasket under the flame rod crumbles?