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baxi luna 3

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auricpipe
auricpipe Member Posts: 1
in Domestic Hot Water
I have a brand new baxi luna 310 fi unit. Just hooked it up for DHW plus radiant heat when I turn it on the gas light flashes right off the bat. I can reset and will fire for 10 seconds and then shuts off and light flashes again. It is brand new could it be the pcb ? 

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  • Mark Eatherton
    Mark Eatherton Member Posts: 5,853
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    Could be a LOT of things...

    Including the PCB board.



    First things first, was it properly commissioned at the time it was started?



    Combustion analysis?



    Gas pressure check?



    Is wiring polarity correct?



    All molex connectors in good shape and fully seated?



    Good Earth ground to the circuit serving the appliance?



    You have to eliminate all the low hanging fruit before you start blaming the electronics. And not that it (bad PC boards) doesn't happen, but the other stuff won't cost much to diagnose. The boards on these things can approach the thousand dollar mark. I can count on one finger how many bad PC boards I've seen,



    ME

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