Hot air

mercmadjim

Senior Member
Joined
Dec 19, 2008
Messages
547
Reaction score
1
Location
Cornwall
Your Mercedes
SLK230k
The heater in my SLK only sends out warm air, I can't get it to blow cold.
I have gone through the site, and I am guessing the problem is my duovalve, my car is non-aircon, can anybody confirm my suspicions?
Thanks.
 
OP
mercmadjim

mercmadjim

Senior Member
Joined
Dec 19, 2008
Messages
547
Reaction score
1
Location
Cornwall
Your Mercedes
SLK230k
  • Thread Starter
  • Thread starter
  • #3
Thanks Malcolm, so for ordering purposes it's called a duovalve?
 

television

Always remembered RIP
Joined
Mar 14, 2005
Messages
164,073
Reaction score
331
Age
86
Location
Daventry
Your Mercedes
2002 SL500, 216 CL500, all fully loaded
Indeed it is called that, do you have a voltmeter where you could check the voltage going to it
 
OP
mercmadjim

mercmadjim

Senior Member
Joined
Dec 19, 2008
Messages
547
Reaction score
1
Location
Cornwall
Your Mercedes
SLK230k
  • Thread Starter
  • Thread starter
  • #5
Yes, I have got a multi meter, should I check there's power getting to it? is it on a fused circuit? my blower motor is a little rumbly, can that affect it?
Thanks.
 

television

Always remembered RIP
Joined
Mar 14, 2005
Messages
164,073
Reaction score
331
Age
86
Location
Daventry
Your Mercedes
2002 SL500, 216 CL500, all fully loaded
Though it is a pulsed voltage going to it, some sense can be made with a volt meter, unplug the connector from the duo valve, and there are 4 wires I think, 2 for each side, just plug into 2 of them and change the heater settings and the voltage should change, max voltage when set to cool.

Though nothing to do with this, if the fan motor is noisy, it would pay you to drop it and lubricate the bearings
 
OP
mercmadjim

mercmadjim

Senior Member
Joined
Dec 19, 2008
Messages
547
Reaction score
1
Location
Cornwall
Your Mercedes
SLK230k
  • Thread Starter
  • Thread starter
  • #7
Thanks for that Malcolm, where is the fan motor please?
 


Specialist Classic Parts suppliers
SLS Im- & Export Handelsges.mbH, Industriestrasse 2 - 4, D-22885 Barsbuttel (bei Hamburg)
Tel. +49 (0)40 656 939-0, Fax +49 (0)40 656 939-399
Visit our website atwww.sls-hh-shop.deto view our comprehensive catalogue of parts for:
190SL (R121), 230 - 280SL (R113), 280 - 500SL/C (R/C107)
Good English spoken and friendly service to discuss your requirements.
Top Bottom