Thread: Aircon / Heater Possible Fan Prob...

Originally Posted by DaveS3

Hi All...

Haven't been particularly active on this site lately, so here we area again...

Had a prob with my Ser1 Update Disco.

Problem: The Aircon / Heater doesn't blow air on fan settings 0,1,2,3 (obviously not 0 - but for the sake of clarity). However, it does work on setting 4.

Additional Info -
Aircon button works (ie light comes on, blows cold air)
I tried replacing the fan switch today with a 2nd hand spare, but to no avail (I'm open to the suggestion that both switches are dudded, but it's unlikely)
When turned from 0 - 1, aircon clutch engages - so i think its Blower related rather than aircon etc.


So, is it a common problem for the Blower motor to die??

If so, why does the aircon / heater work on setting 4 but not 1-3???

Any help would be great...


Cheers
Dave.

Your blower fan resistor pack is faulty.
When this packs in you loose speed control on positions 1,2 and 3 but 4 continues to operate because 4 is a direct feed to the blower fan and dosen't have any resistors in the circuit.
New resistor pack needed. Easy fix.