I am curious that you mounted a blower on the F400. This is the first I have heard of that. Jotul does not list a blower as an option. Is it an after market part or something you made yourself?
It is factory. When I reinstalled the stove outlet, I installed the brackets for the rear heat shield. I like the looks without it but wanted the option without tearing everything apart. The rear heat shield is factory with the blower kit suspended from the bottom. It is removable as well. There is a manual and auto mode with two electric clips that mount to two male connectors on the bottom of the stove.....this must be a thermostat. I have been running auto only. Take a look at jotuls website under accessories.