heater box and controls help needed

[Dynamite-dindin]

hi all having problems with my heater box and where the cables go, can someone explain what each lever does and where the cable goes for each one , see pic below, the lever circled in red what does this adjust and is this in the correct place, the lever circled blue what does this adjust this goes under the vehicle to a valve in the coolant pipe, and finally the lever circled green what does this lever do and where does it connect. any help or pictures would be great many thanks.

[Aidan]

with three lever control top one is windscreen or vents mix, full right is windscreen, full left is vents
middle one is heater valve, left is off, right is hot
bottom one is fresh air mix, iirc full right is full fresh air, full left is recirculate air from van

[Dynamite-dindin]

any idea where the recurculation cable goes on the heater box

[MidLifeCrisis]

fwiw - the bottom lever on mine opens the vents in the footwell area (fully left to open, right to close).
The cable attaches to the heater box on the bottom right of the box (there should be a little lever arm thing down there).