hey guys looking for some help on an issue with my pb105... when the stove is in auto mode the igniter starts up and gets a good fire going but the igniter never turns off and eventually get the igniter failed to light error and shuts down even though the fire is burning... and when i switch it to manual mode and start the fire myself the feeder doesn't work.. my original thought is the isp probe but wanted a second opinion first... thanks for any help