Description
This is a BRAND NEW OEM Lennox/Armstrong/Ducane Furnace Fan Control Circuit Board. The Part # is 39M84 (also 39M8401 R46021-001 & 46021-001). The Honeywell part # is ST9103A 1069. Thanks for looking and good luck!
Function:
The control board is the "brain" of your unit, coordinating and executing the operation of other various components by sending voltage when and where needed. A control board is constantly monitoring sensors and safety switches in the unit.
Replaces Old Part #s:
R46021-001 46021-001
Repair Difficulty Level:
Partial List of Units that Use This Item:
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