Added after writing everything else below: I get it now. There are 2 version of the Freedom line. The video I linked to is the new version, and Mr. Wizard is thinking landlordy has the old version.
I have to say I'm totally confused over the Freedom Combi vs. Freedom 10/20/etc. model names. Looking at the manual downloaded from
http://www.xantrex.com/documents/Discontinued-Products/Freedom_combie_Owner_manual.pdfit says the Freedom Combi is a Freedom 10, 15, 20, or 25. Then looking at the Heart Interface manual from
http://www.bdub.net/manuals/Heart_Freedom_10.pdfits picture looks identical to one of the Freedom Combi pictures in the Xantrex manual.
In trying to reconcile all of this, I concluded that "Freedom Combi" is a product line that has 4 different models, the 10, 15, 20, and 25. Very confusing on Heart's and/or Xantrex's part. Maybe somewhere along the line Heart or Xantrex did a cost reduction with the internals but kept the case the same?
landlordy-If you go with the external transfer switch, verify that the charger part still works. If the control board is the culprit cutting off the transfer relay, it could be cutting off the charger, too. By the way, I'm thinking you should change your forum ID to freedom-depot. I have a few wfco converters piled up, but you're quickly surpassing my stash.