A/C aux fan low speed mode - PeachParts Mercedes-Benz Forum

aeklo · #1 07-24-2001, 02:45 PM

I have a 230CE w124 '88, with a single A/C aux fan.
The fan used to run at high speed now and then, but has never operated at a lower speed.

Now, should the fan run at low speed all the time as long as the A/C button is pushed?

And, secondly, where do I start searching for the fault?
I have heard people talk about a low speed resistor?

Thanks!

Anders Eklo - Norway.

Benzmac · #2 07-24-2001, 10:41 PM

The low speed fan will come on when the pressure inside the a/c system gets too high. The best way to check is to bridge the high pressure switch on the drier and see if it comes on...

aeklo · #3 07-25-2001, 10:33 AM

OK, then it apparently works alright. I heard some talking about there being a low and high speed mode of the fan. But since I have only one fan, this should kick in at high pressure, and at only one speed. Am I right?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
'84 300SD W126 - A/C clicks off dead once it reaches dialed in temp	bodyart27	Diesel Discussion	7	08-12-2005 04:19 PM
79 450SL A/C Failure Mode	RomeroAG	Mercedes-Benz SL Discussion Forum	3	07-14-2004 11:39 PM
560sel Aux Fan - A/C Problem	moedip	Tech Help	27	07-09-2003 12:31 PM
'84 300SD W126 - A/C Question - the saga continues	bodyart27	Diesel Discussion	13	06-23-2003 06:32 PM