I have been running the stove non stop the last few days. I was shutting down during the afternoon heat of the sun room every day and cleaning. I've been getting by with settings 1,2 and 3 that keep the house 74-75. I have exhaust voltages at 90 and 4&5 at 95 volts. I was up at 5:30 to add some scoops and it was 9 degrees out. The house was at 70 so I bumped the stove to #4. It was cranking hot in front of the stove so I went back to bed. I couldn't sleep and so I hear the furnace fire up(set at 70). I look out the porch window and see it dark with the red light on. It was so cold it didn't take long for the stove to cool. I dumped the pot and fired up on setting 3. The stove fired and as I checked the voltage the stove went eerily quiet with this slow motion circular flame around the burn box. My heart is now beating strong in my chest. I'm not sure if I bumped the voltage up or down but it instantly was back to a good burn. Not sure what that was but it got my heart rate up quicker than my recumbent bike. This happened once before and I was told what it was but I'm an old guy and forget. Anyway was my voltage to low on #4 ? I guess I figure more voltage would put MORE heat out the blower and shut it off. I have it so the pellets just dance. I had the air gate at 1/3 but had too many issues with the weather changes and was constantly adjusting the voltage up. What do I need to learn. Thanks GBY