The blower assembly has little tabs that engage the stove body. It's easy for them to miss, which means the assembly is sitting on the floor with a slight gap, which severely screws up the sensor contact. This is a very common issue.Only news on the HI200 is that the fan stopped working in auto mode. It was only in the 40's last night so just had a small fire. It was plenty hot, though. The fan should have kicked on. I ran it in manual on low. Will call the dealer today. It causes me to wonder how big a role the blower plays in preventing overfiring the insert?
Pull out the assembly, locate the hooks/tabs, lift the assemble as you slide it back in so that the hooks engage the slots in the stove body. Should solve it for you.