Came home tonight to see the #4 light flashing on the control. Wife said the top of the stove was very hot. I looked it up in the manual and it says: Light # 4 on Heat output bar flashing. • Hopper is open, or hopper switch has failed. • Reset sensor and determine cause. Was it Convection Blower failure or Circuit board control problems? • The 200 °F (93 °C) high limit temperature sensor has tripped. She said she opened the lid and a pellet was in the corner, possibly keeping the magnet from sensing the lid closing. I put the stove back on and within 15 minutes the #4 was flashing again. I will call the dealer in the morning, but is there something obvious that I might be able to check tonight? Maybe a blown fuse?