hello I have a 25-PDV stove that I have replaced the convection blower the computer board safety shut down switches and combustion motor all with in the last month. When I lite a fire in it will go thru start up after 15-20 minutes the room blower will come on after 25 min the combustion motor will turn off and will not come on again till you push the on button again then goes thru start up it will shut down the combustion motor after 20-25 minutes I cleaned the whole stove while replacing motors and control board any other ideas to try before I buy a new stove and keep the parts off this one for the new one? When I let the fire burn out without the combustion motor running it will not send a error code just shut down completely after about a hour