Our issue is that the fan does not speed does not increase when the stove reaches the temperature. I believe it is the convention blower is not kicking on when required. I spoke to someone at the store he mentioned it could be the Span Disk but we need the instructions on how to test if it is the blower, or the span disk or the control board issue to replace the appropriate part. If is too large to email I believe so if we could get a link to the service manual that would be great. Thank you