St Croix Hastings 1and 2 light up fuze blows once fire lights

My st croix Hastings stove shuts down( blows Fuze) once pellet fire starts. The Fire takes a long time to ignite sparking many times. Both fans start. I have replaced Sugar motor proof of fire swith and control board. Now it will not even start fire before shutdown.

I have replaced Augur motor not suger motor

During start up light 1 and 2 are constantly lit.

Sounds like the igniter is bad and you should replace the vacuum switch.