I recently bought a VW lupo 1.0 and it has an issue with the heater that it doesn't work on any setting it originally had an issue with water leaking into the car due to blocked drain holes below the windscreen. The car has had the entire interior removed bar the dashboard ,doorcards and the headliner everything else had been removed to be cleaned and dried out. After this had been done I moved onto the issue of the heater not working so I bought a used heater resistor which is known good but still didn't work. The fan is fully functional as was tested by being connected directly to the battery the fuse has been tested and replaced and is not the issue does anyone have any ideas on what could be wrong?
