Problems with my heating after a leak on a 1997 C180

[Neenie]

Hi everyone,

You've all kindly saved me a massive garage bill before when my MAF sensor was dodgy when I first got the car, so I'm praying someone knowledgeable could maybe help me again.

During these storms, my 1997 Mercedes C180 Espirit decided to have a MASSIVE leak in my passenger footwell - I've managed to sort that out by unscrewing the trough that goes along the length of the windscreen and emptying it out (it was full to the brim) and unblocking the small pinhole outlet - so far so good (hoping that once I take the carpet out this week to get it dry, my car will stop thinking it's a driving cloud but since I've done this, 3 out of my 4 heaters fans are only emitting cold air.
During the leak, the passenger vent didn't work at all but my other 3 did, but now all of my vent fans blow air but only my driver's one emits any heat.
When I was under the bonnet, I did check all of my fuses and changed one dead fuse (for my rear heated window, which now works nicely) but I'm just perplexed over this cold air issue.

Any help and advice would be greatly appreciated.

 

[Dec]

The heater valve, the one on the right in the video below, which serves the passenger side of the car, may be stuck, tap it with the head of a screwdriver with the engine running, both thumb wheels in the cabin should be turned to Red and with the car up to full heating temperature of about 80c.
Dec

https://www.youtube.com/watch?v=8jhPEfLI45s

[YOUTUBE]8jhPEfLI45s[/YOUTUBE]

 

[Neenie]

Hi Dec,

Thankyou so much, that's a great help - I shall give it a go this week