My stove works great.... On full heat! Basically, I can turn the onboard thermostat to 1-9 (1 for fuel and 9 for the blower) And this thing still feeds pellets as if the thermostat was on 9-9. If it happens to get to 15 degrees outside, this is just fine, however here in NC it does not get that cold, and I just cant suffer a 77 degree house. 70 is good! The stove was purchased in jan of 2009. After throwing me a couple error codes from time to time, i went in the back to investigate... I tried tinkering around with the diagraphm thing in the back, to no avail. It either runs on 100% or turn it off! Anyone had any similar issue?