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Knight Lochinvar KBN151 display shows "Maintenance Required"

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SteveZak
SteveZak Member Posts: 1
edited April 2020 in Gas Heating
Installed 2016 to replace Munchkin from 2006. Regular annual maintenance by installer each fall. Used for in floor radiant hearing of five zones and sidearm for domestic hot water.
Knight Lochinvar KBN151 display shows "Maintenance Required, Call"
Installer replaced all zone valves last fall due to minor leaks.
Is this an urgent problem? System appears to be working normally.
What are the possible causes?
TIA

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  • Zman
    Zman Member Posts: 7,569
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    It may just be a timed message like the light in your car that turns on at 50,000 miles. You should be able to scroll though the controller and check for error logs.
    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
    rick in Alaska

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