outside unit will not shut off for the auxillary to run

by brandon collier
(jenkins, KY )

I have a trane x13 it recently kicked on and the fan didn't kick on with it and I smelled it getting hot, I immediately shut it off but now the blue light for auxillary stays on and the outside unit wont shut down like it should. the air isn't very warm, lukewarm at best and it cant get the house above 65. I don't know if switch to differentiate between the two went bad or if a heat strip burnt up. it runs constantly now and wont shut off at all unless I turn it off manually at the switch.