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If your blower motor is running nonstop it is not a control board issue.
100980-01 NEW EGC1 LENNOX Furnace Ignition Control Board 1173-1 EGC-1

100980-01 NEW OEM 1173-1 w/ MOUNTING PEGS INCLUDED Ignition Control Board EGC1
$149.99
100980-01 NEW LENNOX Furnace EGC-1 Control Circuit Board 1173-1
$249.99
100980-01 NEW EGC-2 Furnace EGC-1 Control Board GENUINE OEM PART SEALED 1173-1
$229.99
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