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Weil McLain 635 100 010 Thermostat 30067439 890 low resistance electrical interface critical for low resistance electrical interface critical for maintaining reliable flame sensing and spark ignition sequences this genuine OEM replacement part ensures the control board receives the precise signal needed to maintain safe operation and prevent error codes like the common 3 flash sequence associated with pressure circuit failures Please contact our team to confirm compatibility or technical details before purchasing Does this kit include the immersion well
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