Originally Posted by Bubba3200
I will have to check mine....02 Overland. But the theory here should be that the fan comes on when the a/c is selected. Why?? Because the condensor has to have air across it at all times to cool the freon. Just like your home unit....when it is on the outside condensor fan should be running. If the fan is not running at stop or slow speed the a/c will not work right and a over heat condition could occur.
The hydraulic fan on mine seems to have variable speeds and it seems to adjust accordingly.
THIS. It is exactly as Bubba said. I have an 04 WJ I6. AC on = electric fan on (no hydraulic fan). Why? Because your AC needs air over the condenser to make cold air. Totally normal. Note that if your Jeep hasn't warmed up all the way, if you turn off the AC, the fan will go off. Theoretically, if you are moving, it should turn off as well, but I don't know if that is the case, and it's kinda hard to check...
Long story short, electric fan operation with AC on is normal. No worries.