What control module are you using, and what does it do? From your diagram, the control module turns the fan on, and you're deciding with the 2-way switch whether it runs on high or low speed, correct? (It seems like the control module should connect to the "Auto" terminal of the 3-way switch, right?)

What temp sensor did you use and where'd you put it?

Mark

''Wise men talk because they have something to say; fools,
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