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Peerless gas boiler G-561-SP not firing

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nikki2561
nikki2561 Member Posts: 6
in Gas Heating
Pilot is lit and fan kicks on and off like it's supposed to but is not firing..replaced the low water cut off ,gas valve,and thermocoupler..still not firing! Does anyone have any idea what could be the issue we are racking our brains over this!

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  • 109A_5
    109A_5 Member Posts: 1,385
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    Hello @nikki2561,

    An inexpensive Multi-meter may have been a faster, more economical solution to finding the defective device on your boiler. The random parts changing (Parts Cannon) technique rarely is the best way, as you are finding out the hard way.

    Safety limit devices, Roll out switch, Spill switch, Power Vent safety devices.
    Pressuretrol switch, plugged pigtail.
    All could be an issue.
    National - U.S. Gas Boiler 45+ Years Old
    Steam 300 SQ. FT. - EDR 347
    One Pipe System

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