John,
    I use to think the same but there is no high
pressure switch but rather a high temperature switch.
Dig a little deeper into the manual and you will find
that.   gary
--- John Connolly <john@aircooled.net> wrote:
> Inspection of the A/C circuit will also reveal the
> high pressure switch in
> the AC system. Since "Freon" pressure is also
> dependent upon temperature, if
> the pressure exceeds a certain value (I can't
> remember what it is, 250
> psi?), the fan kicks on high speed (HIGH speed). The
> fan will remain on even
> if the van is turned off. My 87' did it yesterday
> for the first time this
> summer (temps of 105 here), the fan turns off when
> the pressure in the
> system drops below the switch point. This is to
> ensure the AC Still works if
> it gets hot (HOT).
>
> John
> Aircooled.Net Inc.
>

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