Hireling caster have a couple of different lists of spells. They have spells that are clickies and which you can use at any time. They have a set of spells that their description says they will cast. And, according to the Compendium entry, they have other spells that they know.
These "other spells" that they know. Is this something that they will cast, or are they there merely for the sake of "completion" in creating a fully rounded out character?
For instance, Flare has Repair Light and Repair Moderate. But the description says that they will cast Repair Moderate. Does that mean they won't ever cast Repair Light?