Question juridique clé
Whether the cantonal court acted arbitrarily by accepting disputed electricity-heating charges without further proof.
Solution extraite
Yes. The court should have required further clarification and evidence, since the figures were unusually high and insufficiently substantiated.
Motifs extraits
Under the inquisitorial duty in lease matters, the court had to alert the parties to incomplete allegations. It could not simply rely on the tenant's lack of specific contestation where the amounts were manifestly disproportionate.