e300td

[WAYNE DICKINSON]

Hi
I have an e300 1999,the heater is blowing hot even when on cold,water temp is all ok.anyone any ideas.

 

[brianbrian]

Check duo valve first. Hope this helps

 

[WAYNE DICKINSON]

Thanks,is this the valve under bonnet,off side next to fuse box.2 hoses in and two out.
Regards Wayne.

 

[WG M-B]

Yes that's the duo valve

 

[WAYNE DICKINSON]

duo valve.heater now ok.

Thanks,it was the duo valve.it was the electric side of it that had burnt out.
Wayne.