ive got a used machine i bought 6 months ago recently it wont run in run mode it runs in service mode but sometimes blows the ignition fuse . i got a f03 error a couple of times the engine preheat light does not time or go out any more the battery light stays on on and reads 0 but the battery is over 13 just looked over grounds and areas for rub spots but i didnt see anything backed it out of the shop and fuse blew again any ideas? scott