We have 9 month old Goodman unit. In the winter, it would not let us turn it up more than 2 degrees at a time without throwing a breaker. Lived with that as we couldn't get our service man out. Couple of months ago, turned air on and it ran for maybe a week and went out. Service came and put in new thermostat. We have now had 3 new thermostats and the unit is blowing fuses. Some fuses last 2 weeks. Put 2 in yesterday and were blown by this morning. Service man has replaced fuse board and did something to the outside unit. Don't know what else to do. Any ideas?