I had problem with Mercedes c220 year 1996. The Air Cond Condenser Fan is not working whwn the Air Con on. Compressor running ok and cooling is good but th pressure increased when static condition. Motor Fan after checking is good function.
There is a high pressure switch on the high side of the ac system,it most likely is bad.
Testimonial: "I had change the pressure switch but the problem still same"
There will be a relay for that circuit,it will be cooling fan relays,it will be separate from the cooling fan relay for the engine,condenser fan relay I believe is the label,check it.
Both are pressure switches,one is for ac cut out,and the other is for the fans,is the dryer on the high side?It most likely is,one is to cut the compressor off,the other is for the fan,or fans3 wire is for the fan,or fans.
No,it needs to come on about 225 or about,that is way too high
If the high side pressure switch is not the problem,the cooling fan module may be the problem,but it most likely is the high side pressure switch.
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There are 2 switch at the receiver drier. 1 is for pressure switch ( 3 wires ) and the other is for what ( small switch with 2 wires )
At what pressure normally the fan is running. Currently the high side pressure is 300 psi? it is normal or the fan running at pressure more than 350psi?
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