----- Original Message ----- From: Brad Hogg <bhogg@xxxxxxxxxxxxxxx> > I've noticed this difference. When on Defrost, does the system ignore that > cold engine lockout switch? Yes. This function is described in your owner's manual. The purpose is to prevent blasting you with icy air when the engine has not yet warmed up. The reason for the override function on Defrost is to get the glass above freezing at the earliest possible instant, regardless of passenger (dis)comfort. Dick Benjamin > > ----- Original Message ----- > From: "Otis Davidson" <otisdavidson@xxxxxxxxxxx> > > the Water Valve lets the fan turn on when the temp of the coolant rushing > > thru the valve is above 125'F. My AutoTemp II kicks on when the coolant > > reaches 140'F....unless I have it set on Defrost,that is. > > > > Steve from Albany,N.Y.