To start off with, when the blower used to stop, he could kick under the glovebox and it would kick in again suggesting slightly corroded contacts, we had a look at this and cleaned them out a bit (there wasn't really much in the way of corrosion).
The last couple of days, the blower hasn't been working at all no matter what happens. Im tempted to say that it's the ignition switch like the Xantias, but are the 406's wired up silly like them?
He's got Air Con but no climate control by the way.
He's just dropped the blower motor out to test it at this very moment