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Looking for schematics of Honeywell Fan Control Board ST9120C 4016 ST9120C4016

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Dec 23, 2021
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Dec 23, 2021
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I'm trying to find the scehmatic of Honeywell Fan Control Board ST9120C 4016 ST9120C4016 used in Furnaces.

I'm trying to troubleshoot it but it has a chip from Motorola that I can't not identify
SC421070cp
If you have some information please let me know
Thanks
Ed
 
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