Thetford Aria Classic model and control service prep

Use the official Thetford Aria Classic support page to collect model and flush-control details before service.

Owner-safe checklist

Record the Aria Classic model, serial details, flush-control behavior, water state, cleaning history, storage state, and exact symptom.
Save photos of the visible label, controls, bowl condition, paperwork, and the support page or document you plan to reference.
Use Thetford, a dealer, or qualified RV sanitation service for powered controls, mounted plumbing, parts, or replacement decisions.