W202 Blower relay & Wiring

[GB Classic]

Hi All

I have got a problem in that my heater blower fan is not working - I posted about this on the forum a while ago. I think it is the relay, well I assume it is a relay, that is mounted on the blower motor as pictured here that is at fault and what I am looking for.



It would be helpful if I can get the relay complete with wiring and connectors as shown below -



- as my relay seems to be soldered on for some reason. It maybe that it had been replaced with a non standard part at some point. If anyone has one or can point me in the right direction I would be extremely grateful.


The car is a 1994 C280 auto with air con.

 

[television]

Thats the way they come and its called a regulator,, they are nearly always on Ebay for sale

When testing with a meter one pin is open circuit

and they come with the wires soldered on and the plug

 

[GB Classic]

Hi

Thats the way they come and its called a regulator,, they are nearly always on Ebay for sale

When testing with a meter one pin is open circuit

and they come with the wires soldered on and the plug

Thats very useful information Television, thanks very much I shall certainly keep an eye out on ebay now that I know what I am actally looking for.

If anyone does have one for sale though please still let me know.

 

[television]

Hi



Thats very useful information Television, thanks very much I shall certainly keep an eye out on ebay now that I know what I am actally looking for.

If anyone does have one for sale though please still let me know.

They come mounted on the alli heat sink so look out for that and search the dealers stock on Ebay.

 

[GB Classic]

Got the part

Pleased to say I got the part now form a very helpful ebay shop http://stores.ebay.co.uk/MERCEDES-AUTO-SPARES

All working fine now.

 

[amouruso]

W202 Blower Connection, weak airflow

I had very weak air flow inside the cabin from heating/ventilation blower motor, after reading the many threads here I managed to identify the problem as worn out brushes. Having changed this, I noticed the air flow has become considerably better from being very weak to just weak now..lol So I went back to do some more research and came across a couple of threads here about the blower blowing in reverse due to reversed connections... Again what did is reversed the the tree pin connector to the blower/resistor unit and found the air flow from the vents was for first time full on and able to control it with the digital climate control unit... NOW heres the problem.. when i did this the engine was off and when i connect the three pin connector in reverse the blower fan comes full power.. even after switching on engine, running it for while and then switching off, the blower fan remains on, on full blast.. I'd be grateful if anyone has any insight into this problem or has experienced the same problem! Thanks!

Thats the way they come and its called a regulator,, they are nearly always on Ebay for sale

When testing with a meter one pin is open circuit

and they come with the wires soldered on and the plug

 

[amouruso]

Hi Television... would you know anything more about the 3 pin blower connection terminal? I have weak air flow (considerably better after having changed brushes) the only way i found to overcome this is to connect the 3pin blower connection in reverse, but then the blower remains on (full power) continuously even with the engine switched off.. Any help on this would be grateful! thanks

 

[coupe deville]

The thread is 4 years old, tv hasn't posted on here for years

 

[andy27168]

Hi,
Not knowing the exact wiring configuration I would say by reversing the connection on the blower motor you are effectively bypassing the speed regulater, in my considered opinion you have a faulty speed regulater. The speed reg on a climate control system is different to a run of the mill c class unit. As previously stated earlier in this thread try e-bay as there some usually on there.

 

[Sewy_01]

Amouruso, did you have any luck with thas as I have got the exact same issue on my car (w202 C200).

I've tried replacing the brushes but still no help.

I've got a feeling its a faulty blower regulator but I'm not sure I want to replace it if it could be something else....

Any advise would be much appreciated.

Cheers