very cold
 

hi can anyone help I have a Volvo s40 2001 last week my heater and cold air stopped working the little red light comes on when I start the car but goes off when I try to adjust the fan control now the light does not come on at all so I have no heat no demister and no rear window defrost please help:)

did you check fuses? does the ac light blink for like 20 seconds on start up?