What did the tech say about the loud auger? I'm surprised, as I have a Rika also (Integra model), and haven't heard a peep from the auger, only the little scuffle of pellets dropping down the feed chute. The fan noise can get pretty loud if you have it on the Fuel Usage #2 setting and it's above 60% (non-thermostat models), but I'm really surprised about the auger noise - mine is all but silent.