Citroen C5 Blower Heater Problems

[Slinnian]

Hi all

i am having problems with my blower heater on my citroen c5 2001 hdi. the heater only works on full power, and occasionally decides not to work at all! i am a bit concerned as the colder weather is now upon us and one needs their heater! any ideas of the problem or rememdy??

thanks

[SaabC5]

Its almost certainly the resistor pack located beneath the dash on the drivers side.

[Slinnian]

heater rheostat was gone! got a cheap replacement from breakers yard and now working a treat