Put it in heated garage or shop for awhile before trying to use it any more twocents
If that is not possible start it up and cover that window really well with several layers of good insulation, blankets, large moving pads or something else that is good, and let it run for as long as it takes to unthaw that window with the heater on full blast up scope

Last edited by Cab_Burge; 01/01/18 03:54 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)