That depends Daksy... If the drive motor is shaded pole, reversing the leads will do nothing to change rotation as the rotation of the armature is dependent on the shaded pole design and not current flow.It may be wired in backwards. If you can reverse the leads, it'll probably turn the other direction.
Far as a bad Triac, you can buy them individually or in bulk from Dell Electronics or Digikey. Easy to replace with a pencil soldering iron. Just match up tjhe numbers on it with the replacement numbers, not a big deal.If it's moving at all. I doubt it's an issue with the triac driver. Can you physically turn the motor 180deg?
You have no idea what a Quad auger motor looks like,nor probably know his is DC voltage. Sometimes best to check.Any auger motor I've seen doesn't change direction based on any controls or board problems, it's the motor itself whether it's set up as clockwise or counterclockwise. If you ordered the wrong direction or they shipped you a mismarked or wrong one, it can be reversed to the direction you need. The instructions already given above are great, but sometimes seeing is easier. So here is a link with instructions, pictures, and even a video on how to change direction of auger motors.
Changing Auger motor rotation
My apologies. You're right, I don't know what his motor looks like. I read SidecarFlip's helpful instructions about flipping the windings on shaded pole motors and thought pictures and video might help. Hopefully, at least if someone searches the forum for reversed auger motor the instructions I posted will still be helpful for the common AC ager motors.You have no idea what a Quad auger motor looks like,nor probably know his is DC voltage. Sometimes best to check.