Airflow:possible to use heater blower in addition to A/C blower?

KISS Posts: 12,510, Reputation: 839

Uber Member

#21

Aug 30, 2009, 06:47 PM

OK, W controls heat, Y controls cool, G controls fan, Rc to Rh jumped we'll call that terminal R. How the fan behaves in heat is dependent on the system switch.

Assume no t-stat
i.e. if you jump
R to G; runs the fan only
R to Y; run's the outside unit only
R to Y and G; run's the AC and inside fan like it's supposed to

R to W; runs the 1st stage heat. SINCE ELECTRIC heat, you may need t jump R to W to G; so fan and heat come on together

Note R= Red, W=white, Y=yellow and G = green

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