My ac been running fine but today I noticed started warming up in the house went outside the unit is not running but the fan in the house is any ideas the fan on the unit try to kick on but like it is low volt

Since inside Fan is working, so is transformer.
Check for 24 volts to Outside Contactor coil. Verify 240 to Line side of contactor.
You should have 240 volts on Load Side of the contactor when energized.

Check your start capasitor outside for burnt wires or a swollen top.

Thanks guys I got it thanks for the help

What did it end up being?

Capasitor thanks