I have an older Harman Invincible insert just changed the combustion blower last month. Now my distribution blower is running and not running. The stove's distribution blower will shut down and then after a while kick back on. When it has shut down I have turned it off and tried it in test mode and the blower doen't kick back on. Then when I turn it back on it kicks in after about 5-10 minutes. The blower was making noise a couple of weeks ago but noise has stopped. I don't know if the motor is shot, it heats up and maybe shuts down, the ESP probe is no good or the circuitboard is shot. Was wondering which path to take.