well if it was cold 4 a coupleof days its not the refridgerent, it sounds to me the compressor isnt kicking in(?) maby?u changed the power cord, why? the weakest link in a window a/c is the control switch. if u r mechanicly inclined u can remove the switch, unscrew the two halves(sometimes they have little crimpy things holding it together) seperate the two halves. u will c the contacts inside, using some fine emery cloth course steel wool u can clean them. sometimes they r pitted beyound rebuild, but some r not. regrease using dielectric grease, assemble, install and hopefull all is fine. u can always buy a new switch, but they cost like 35.00. i hate spending money and always try fixing the switch first. i hope this helps you
