A comprehensive Operating and Service Manual. All schematics are complete and easy to read. The PCB drawings and complete parts list are very helpful. I would definitely recommend this manual.
Genuine Toshiba owner's manual. Couldn't really ask for more. And written in understandable English in contrast to a few recent experiences I have had with manuals for other equipment other than Toshiba but made in China and written in "Chinglish"!
Text excerpt from page 5 (click to view)
The appliance can be installed to recirculate or extract contaminated air. The cooker hood is more effective when used in the extraction mode.
Recirculation
The cooker hood is supplied specified for use in the recirculation mode with the charcoal filter fitted. In the recirculation mode contaminated air is passed through the charcoal filter to be purified and recirculated into the kitchen through a recirculation grille.