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taz
taz Posts: 13
in THE MAIN WALL
I have a Weil McLain cg boiler that has pilot and the entropic igniter is constantly sparking. It has a mercury flame senser on the gas valve. Is this senser not working to allow the gas valve to open fully?

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  • nicholas bonham-carter
    nicholas bonham-carter Posts: 8,580
    Boiler not firing

    Do you have the installation manual for your boiler(also available online)? It will contain some diagnostic procedures to follow in order to find the source of the problem.

    Probably the pilot orifice has become blocked, and without the pilot lighting, the gas valve will not open.--NBC
  • taz
    taz Posts: 13
    Boiler

    I have pilot...... Not main gas to burners...
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