Most species of woodpeckers will "sound" during the spring as described in our Woodpecker Control article. This could be a random thing but many times they will tend to use one side or section of the house. You should be able to get them to move away by installing a Jumping Spider or Bird Tape. These visual/motion deterrents do a good job of alarming woodpeckers and make them uncomfortable enough to get them to go elsewhere. I suggest you set either or both of these repelling devices up where he is most active and see if you can get him to stay away.

Here are direct links to the information and products mentioned above:

Woodpecker Control:  http://www.woodpecker-control.com/woodpecker-control

Jumping Spider:  http://www.bugspray.com/catalog/products/page1658.html

Bird Tape:  http://www.bugspray.com/catalog/products/page547.html