8YY old Bryant central AC. Moderately used, just popped it on last night and I noticed even though the blower was running the condenser and fan outside weren't. Tried each of three zones, that didn't make a difference. So today I said what the hell, before I call the service guy I turned it on again, fired right up. Too chicken to run it for more than a few minutes.

We've only had it on like once or twice this year, what might make it behave that way?