EC light on. no air con

[television]

Hello and welcome, with the air con off and the controls turned to min, if the heater still blows hot air, it should be just the duo valve faulty and stuck on hot.

Welcome to the forum

 

[superaquarama]

Hi Chappersrugby,

Are you saying the EC light goes off but you still don't get cold air ? If so cannot help, but if light remains on see my posting a couple of items back (starts W203)

 

[Hoggy]

Got my 220 Cdi sorted just in time for the heat wave ... Star diagnostics/recharge/Star re-rest ... top notch service and at really competitive price

Will certainly be using them again ... WIRRAL-MERC 0151 632 0006

 

[chappersrugby]

chappersrugby

Hello and welcome, with the air con off and the controls turned to min, if the heater still blows hot air, it should be just the duo valve faulty and stuck on hot.

Welcome to the forum

Hi and thanks for this info'.
Now , can you tell me where the duo valve is located on my model[c320 petrol 2001 reg]. I read an earlier thread about how to dismantle and clean and I hope mine is as easy.
I'm a competent mechanic on engines,brakes,rads etc but on what I term modern systems like aircon I'm clueless.
Regards,
Andy

 

[chappersrugby]

Hi Chappersrugby,

Are you saying the EC light goes off but you still don't get cold air ? If so cannot help, but if light remains on see my posting a couple of items back (starts W203)

Hi , yes ec light is off since the garage reset it and the computer analysis shows no faults.The sysatem is charged but it still blows hot air. Television has suggested the duo valve which I'll try as soon as I can find it.lol. Thanks for the reply

 

[television]

http://www.detali.ru/cat/oem_mb2.as...GM=716.667&CT=F&cat=65F&SID=83&SGR=180&SGN=05



38 in the link

 

[chappersrugby]

For models 129,140, 202, 210, 215, 220, 463 Up to the 15-08-99


If you have the EC light on all of the time on the above cars, the cure is to replace the temperature sensor.

This sensor for the refrigerant leaks moisture so that incorrect values are transfered to the control module and air con is turned off.

Replace sensor.

Hi Malcolm,You kindly replied to my question. I seem to have difficulty navigating around this site. I did reply to say thank you and also to ask wjere the duo valve is located? Thanks Andy[chappersrugby]

 

[television]

Hi Malcolm,You kindly replied to my question. I seem to have difficulty navigating around this site. I did reply to say thank you and also to ask wjere the duo valve is located? Thanks Andy[chappersrugby]

It is shown in the link in post 46 but not that easy to see where

Later this evening I will find a how to and post back

 

[bigasotonuk]

Hi,
Having just read this thread from start to finish (though it has some very old posts on it) There seems to be a lot of garages telling customers that the dash has to be removed to replace the temp sensors (heater core, evaporator, and cabin air) at one point I thought mine was gone on my AMG and did some investigation, and I believe the only time the dash needs to be removed to fix the A/C system is to replace the Evaporator, well this is the case in the 208, 202, 210, and I think the 129, SLK and the 124 possibly others too but can only comment on what I believe to be correct.
Also depending on the year the E/C light on could indicate system on and also system off, depending on the type of system/year/model of the car.
If the car has the LCD panel (climate control) commonly found on all the above MB chassis's, you can monitor and reset all the A/C functions that STAR can do, but the problem is interpreting these readings, also this LCD panel can fail (quite common failure on the american forums).
I have posted this hoping this has answered some of the unanswered posts on here, and for future reference.

 

[chappersrugby]

Hi,
Having just read this thread from start to finish (though it has some very old posts on it) There seems to be a lot of garages telling customers that the dash has to be removed to replace the temp sensors (heater core, evaporator, and cabin air) at one point I thought mine was gone on my AMG and did some investigation, and I believe the only time the dash needs to be removed to fix the A/C system is to replace the Evaporator, well this is the case in the 208, 202, 210, and I think the 129, SLK and the 124 possibly others too but can only comment on what I believe to be correct.
Also depending on the year the E/C light on could indicate system on and also system off, depending on the type of system/year/model of the car.
If the car has the LCD panel (climate control) commonly found on all the above MB chassis's, you can monitor and reset all the A/C functions that STAR can do, but the problem is interpreting these readings, also this LCD panel can fail (quite common failure on the american forums).
I have posted this hoping this has answered some of the unanswered posts on here, and for future reference.

Hi,Many thanks for this it does help a bit though I'm not up to speed on acronyms like STAR. Cheers for the advice though. Andy

 

[television]

In have come unstuck on this one, and have nothing on this fault or fix, unless someone else can help only got 2 ideas-.

Do a re set as in the

http://forums.mercedesclub.org.uk/showthread.php?t=36147



Plug into STAR and get it checked.

Sorry about this, I have done my best

 

[chappersrugby]

Hi, Thanks for trying. I have ordered a manual on cd from ebay.Hopefully this might help.Cheers,Andy

 

[Sam/Unit Fan]

I had the EC light on and no air con problem but not anymore. After reading this forum and thread, the nice man at MBS of Southampton fixed the problem. One email and a phone call saw me arrive at his premises in Burlesdon just off Junction 8 M27 and in 20 mins I was heading back up the motorway cool as a cucumber. Computer reset

Thanks Colin, great service.

Regards

Peter

MBS details:
E.mail. MBS@mmt2.vpweb.co.uk
Web site http://mbsofsouthampton.co.uk

 

[alan782]

I had the EC light on and no air con problem but not anymore. After reading this forum and thread, the nice man at MBS of Southampton fixed the problem. One email and a phone call saw me arrive at his premises in Burlesdon just off Junction 8 M27 and in 20 mins I was heading back up the motorway cool as a cucumber. Computer reset

Thanks Colin,

Now Colin has a fan club, how come Malcom hasnt??:lol:

 

[television]

I had the EC light on and no air con problem but not anymore. After reading this forum and thread, the nice man at MBS of Southampton fixed the problem. One email and a phone call saw me arrive at his premises in Burlesdon just off Junction 8 M27 and in 20 mins I was heading back up the motorway cool as a cucumber. Computer reset

Thanks Colin,

Now Colin has a fan club, how come Malcom hasnt??:lol:

SAM is a much nicer person than me

 

[alan782]

While i have to agree he is a dammed nice chap, he is very helpfull and takes time to explain things he is doing(and Dave) I do not believe he is a nicer person and he lies about his age

 

[turbopete]

Now Colin has a fan club, how come Malcom hasnt??:lol:

Malcolm does have his fan club! everyone on here he's ever helped out of the you know what! just no one wants to embarrass him by making a big deal of it! :lol::lol:

 

[Cole@MBS]

I had the EC light on and no air con problem but not anymore. After reading this forum and thread, the nice man at MBS of Southampton fixed the problem. One email and a phone call saw me arrive at his premises in Burlesdon just off Junction 8 M27 and in 20 mins I was heading back up the motorway cool as a cucumber. Computer reset

Thanks Colin, great service.

Regards

Peter

MBS details:
E.mail. MBS@mmt2.vpweb.co.uk
Web site http://mbsofsouthampton.co.uk

Ok guys, now i know what your talking about!

Thanks Peter for the kind words, simple common fault.

Again, go,s back to people not knowing what there doing with aircon and how the merc system works!

Another happy customer is always a customer!!

 

[Cole@MBS]

And welcome to the forums Pete!!

 

[alan782]

Another happy customer is always a customer!!

You are SO SMOOTH:lol: