Control of ventilation system

[Martin Howell <martin.howell@xxxxxxxxxxxx>]

I have a Villavent whole-house ventilation system, and its v good.
However, the controls are very on/off and manual, and I would like to
apply some intelligence to it - for example: in the winter, monitor
outside temperature and stop the intake of air if it drops below a
certain temperature;  in the summer, turn the fans on to 'boost' if the
temp in the house gets too high, and so on.

Does anyone here a) have a system like this that they have taken control
of, and/or b) know what the control panel signals are likely to be so
that a PC could simulate 'em?  I've tried talking to the company, and
they're as much help as a chocolate teapot.

Martin