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Lochinvar Knight xl

I have a Lochinvar knight xl boiler and are getting a no flame ignition lock out.

We get a flame for a little bit but then it cuts out.

I have confirmed that flame sensor, ignitor and integrated control (mother board) is working.

Gas valve was replaced a few days ago but still the same problem.

Any ideas why?


  • hot_rod
    hot_rod Member Posts: 22,382
    Check gas pressure, both static and when it is trying to light off. Check it it right on the gas valve taps.
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream