Q4RD(or SD) Series-13 seer 5 ton Emerson Fan Motor Model K55HXJPG-9246 Nordyne part621740 does not come on. Compressor is 918948 Q4SD-060. Must be SD series. Note on disconnect box top double ganged circuit breaker popped.Also I changed the capacitor; I don't think anything was wrong with old one. Will check 3amp fuse inline to transformer(as shown on electrical diagram on door plate. I noticed that the orange wire from the fan is not connected at T1;there are two post there and it definitely goeson one of them according to the diagram. Also is it possible I have an electrical problem in my mobile: a nearby rear of house plug quit working a month ago and a bedroom closet light socket is not working. I am wondering if there is some easy for me to energize the fan motor and definitively determine if the fan motor is burn out. Unit was a new purchse 13 months ago.Any troubleshooting help would be appreciated. And I did try putting the orange wire on both postwithout the fan motor coming on.I only discovered the inline fuse possibility after dark. I obviously don't know where to proceed but before I allow the prices people are quoting or not quoting me I think I will buy a replacement fan motor if I cannot determine anything else. Help. I could attach the diagram on the door. I will pick up new filters for the return air tomorrow.