User manual for the Aria appliance in PDF form, 10.5 MB, filed under schematics in the index. The name identifies only the product line, with no model suffix, board number or revision, so confirm against the rating plate that the document belongs to the unit on the bench. Operating guides like this explain controls, settings, maintenance steps and basic fault messages, which helps a technician check the normal working sequence and rule out setup or usage issues before moving on to component-level diagnosis.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @pdf_servicemanual. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.