the only thing that runs in the hvac is a small evac fan that runs before the gas heater ignites, and then the main blower motor. from the descriptions i could find online about this York unit the main blower motor is 1/3hp (~2A at 120vac), i did look at tag some time ago, just forget what it said. now, about 3 years ago the control board in this hvac had gone up in smoke, had to replace that, but when i asked hvac guy why it burned up he said the blower motor is probably going. the whole thing (less control board) is just 7yrs old. the fuse seems to blow when the fan blower has been running for some time (it can ruun in excess of 30min depending on how far the temp is swinging, usually less for heating and more for AC.
so i am wondering if i am fighting a blower motor that is starting to seize up and because of that it itself is getting hot, dragging, and then blowing the fuse. or is the socket simply getting too hot from a ~2A continuous current? replacing the blower motor is a pita because its buried inside the hvac unit. with some doing, i could measure the actual current with my Fluke.
the next item is the fuse socket/outlet. the hvac is a plug. the bottom of the fuse socket looks fairly clean to me, and i do make the fuse tight, but in reality the bottom of the fuse is a small nipple and there's not a big footprint between fuse bottom and socket, but 2A should not be causing much heat to have the thing get too hot.
so, if i were to replace the socket/outlet with a better type of fuse or breaker, what type could i use?