I just moved into a brand new home that has cental air (Goodman air conditoner) how do I turn on?

i would check fan speed. it's probably on high. you might be moving more air with new system. a dirty evaporater on old unit woud have gave you a larger temperture drop.

compressor not running or low freon. try replaceing compressor capacitor.

Well it might be a heatpump. Where it uses the A/C portion of the system to draw heat from out side and place it into you home. If its a new home I would call for a Check-Up its only $60 to $80. But dont buy anything you dont need like a new thermostat. Just tell them to check the refrigernt levels and to tell you if everything is runing ok.

You may have defective tstat wiring, or a bad control fuse. Check both.

Sounds like a restriction of air flow. Check you duct work and check for holes or lose duct.

you can try recharging the system...it's a fairly simple process and freon can be purchased at any parts store. here is an overview:
http://www.aa1car.com/library/ac_recharging.htm

check to i see if there power to condenser. check to see if there 24 volts to condenser.checkt the disconnect box for power located out side by the condeser you should have 220volts at that box. check to see if your stat is set on cool.

Goodman, Trane, and Amana are all pretty good manufacturers of heating and air products with some of the best warranties available.

Goodman: www.goodmanmfg.com

Trane: www.trane.com

Amana: www.amana-hac.com

Hope this helps.

That's what contactors are supposed to do, but they are supposed to turn the air conditioner on because the thermostat activates them, not your finger. Be very careful about sticking your finger in there.

Look at this forum and others as well. You will see many issues with Goodman products. Believe the old saying "You get what you pay for!". Carrier, Trane / American Standard, Payne.