My eldery mother berlingo has a faulty heater, only past year it has turned its self on and off but now it has stopped working. A local garage changed the motor but has not cured the problem. Please could you advice what you think it could be, I have noticed that citroen seem to have a problem with the electronic fan speed regulator. Do you thinks this could be the problem with my mothers? the garage now want to change the switches but I am concerned that my mother is being lead a merry dance as she has already paid £100 for motor that is not needed I wold be grateful for you advice. Would you agree that maybe the old motor could go back on and look at replacing the parts you advice. The car is a petrol 1600 and build in 2005. I look forward to hearing from you , please could you also suggest where I could obtain parts required please