Central Air unit will not turn on
We have a Coleman Cooler Central Air unit (It sits outside). I turned it on for the first time this year, but the outside unit will not turn on. My Gas furnace DOES push air through the vents, but its just warm-ish air, so I went outside to look at the central air unit and it's not doing anything at all. It worked last year with not one issue at all. Is there any troubleshooting steps we can take before calling someone to look at it?
Thank you for ANY help at all
Sara and Duane