Isn't the automatic climate control supposed to switch on when you switch on the Auxiliary heater with the remote (mine does not..)?
Do you have to setup the automatic climate control somehow to have the windows defrosted using the Auxiliary heater?
I mean, would it use your last settings or a kind of default setting.
According to the T70 datasheet it should be possible to use the remote for ventilation as well.
You know how to do that?