I purchased a Profile 30 4yrs ago, have already replaced the ignitor after 1yr, the photoeye shortly thereafter, and now am encountering a problem that I can't figure out. The stove starts up normally, but after a short period of time, sometimes before a flame can ignite, and sometimes with a flame in the box......the stove will shut down.....all power, blower and all, leaving the room to fill up with smoke. After reading the manual, my problem was not exactly listed, I decided to replace the pressure switch and the high limit switch but the problem still persists. I have had the stove and all it's parts cleaned thoroughly from dust and debris, The vent is clean. Once the stove shuts down, I am able to get it running again by.......unplugging the stove and plugging it back in, the pellets feed, the fire continues, and the fan comes back on. I then have to turn the unit off by the thermostat and about 2-3 minutes later I turn the thermostat back up, and the stove will usually run as normal except I have to leave the thermostat all the way up to prevent the stove from turning off and recycling causing the restart process and problem all over again. I find myself replacing things that don't need replacing, leaving me baffled...Any suggestions that may help with this start-up problem would be greatly appreciated.