HEATING SEAT CORDOBA YEAR 2002.

Hi, I have a probma in my Seat Cordoba 1.9 SDI of the year 2002, it is the 2000 model. When I give the contact, the heating fan is launched, when checking the ABS, etc. This goes out I go to the car and the heating does not work for me puts off on the screen, I in charge and the heating fan does not work, nor do the stripes of the fan speed come out on the screen, if someone can help me I would appreciate it. Kisia would also know for the sensor or the sensor is worth it, it carries in the refrigeration circuit's splendid vessel