Apologies for the repeat query, just hoping someone can assist.

How does the temperature control work. I have two dials, one graduated
in what appears to be degrees C and the other which seems to control
the fan.  The "auto" position seems to control the fans operation in
accordance with the car interiors temperature.

The fan seems to operate O/K and responds to the temperature setting,
but regardless of the tempeature in the car all it does is blow cold,
unless the temperature controller is set to "max", in which case the
Sahara is but a weak imitation of my Fiats interior.

Has anyone any experience of this problem please?

HN