My heater pump blow cold air,since yesterday at first it was fine suddenly he start acting crazy, what I mean by that not he blow cold air after couple minutes he make noise. Anyway I changed the filter but I don't know where to check for fuse.I have Bryant Model 661CJX036 Product # FA4BN036000AAAA please help me I really don't know what to do and the worst part is the house getting cold and I don't have money now to call an Tech. Pleasssseee help me.

The fan on the outside system may be turning but the compressor may not. Its not uncommon for a run capacitor to go bad(you will get a loud hum when it tries to start). Is the out side system trying to run at all?

Yes I do have a loud hum and the system outside is running,but he never start.