This is nothing to do with the ac control module.
First thing is UNPLUG the blower motor before you start to burn the wiring loom out! ! !
The heater blower motor transistor pack has gone short
circuit, drop the heater blower motor out & either replace the trasistor pack or go down the scrapyard & have a hunt through the Peugeot / Citroen pile for a second hand working blower motor that matches your original one.
TIP: Dont bother looking at 106 / Saxo as the motor wont fit as its different.
Lee, June 2007