Join Date: Jun 2007
Location: South Coast
Re: Heater problems with 147
Could be a couple of things. There are 3 temperature sensors, exterior, interior and inline within the airflow. The climate control computer monitors these and changes elements to suite.
My 156 was playing up (fan stopped working) which turned out to be the control computer (control system is part of the switches).
The way i worked the proplem out was by elimination. Swopped parts over from a working car (fortunately, my dads). It turned out to be the computer (I say computer, it a pcd with a few chips in it).