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   W203 C Class
     Aircond too cold
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Poster Thread
atea4001
Posted on: 2011/9/23 17:19
Just can't stay away
Joined: 2010/5/29
From: Jalan Ipoh, Kuala Lumpur
Posts: 71
Benz Model: w202 1994
Message:
Aircond too cold
After service my aircond, I feel temp so cold. At blower fan speed No 1 and minimum it still feel too cold, compressor cut out too short. Discuss with aircond mechanic, he said it could be my climate controller not so good. Checked with "potong part" cost me RM250. Before I proceed need advise.

Before that I borrowed my mechanic's (friend) dignostic machine and after test it written "code 050 circulation pump m13 discontinuity, Short circuit to ground". Any idea?
Mabel
Posted on: 2011/9/23 23:47
Benzo mania
Joined: 2007/8/7
From: Shah Alam, Cyber Jaya, Sunway
Posts: 20053
Benz Model: S320L, E240, C200
Message:
Re: Aircond too cold
Salam atea,

Here is a list of Mercedes-Benz Diagnostic Trouble Codes (DTC) for 1996+ models

http://www.benzworld.org/forums/general-mercedes-benz/1429876-mercedes-benz-diagnostic-trouble-codes-dtc.html

It's a long list...with additional link in the thread to help you to decode the error code..


----------------
Cheers/Mabel

Nothing great was ever achieved without enthusiasm
Take time to read. It is the fountain of wisdom
Membership Number: One Nine Seven Seven

19owner
Posted on: 2011/9/24 3:05
Certified Benzitos
Joined: 2008/5/16
From: Kuala Lumpur
Posts: 4847
Benz Model: W201 and Others
Message:
Re: Aircond too cold
203 or 202? always too cold? same thing, but what about turning the temperature lower to or to white or red if 202...done that? but still too cold? than very good compressor...

let's talk...
atea4001
Posted on: 2011/9/24 19:33
Just can't stay away
Joined: 2010/5/29
From: Jalan Ipoh, Kuala Lumpur
Posts: 71
Benz Model: w202 1994
Message:
Re: Aircond too cold
Already at the lower area(white). I observed it take too long for compressor to cut out.

Actually I already done full service. Changed drier, expansion valve, gas and oil. It cool very fast. When too cold I will manually cut by pressing EC button.
19owner
Posted on: 2011/9/27 11:34
Certified Benzitos
Joined: 2008/5/16
From: Kuala Lumpur
Posts: 4847
Benz Model: W201 and Others
Message:
Re: Aircond too cold
Quote:

atea4001 wrote:
Already at the lower area(white). I observed it take too long for compressor to cut out.

Actually I already done full service. Changed drier, expansion valve, gas and oil. It cool very fast. When too cold I will manually cut by pressing EC button.


hi again, assuming the aircond is original, using the EC mode is an option...a good option, but with one additional "pressing" step. hehe!

to fix your supposed irregular fault to suit your liking...i'd suggest you get another air-cond guy to have a look at the compressor and relay. do also test whether the switch is working or not by disconnecting it and then re-connecting it back on the compressor too...this is based on my limited knowledge, there should be others with better knowledge chipping in...i think.
adiblalooi
Posted on: 2011/9/27 11:44
Certified Benzitos
Joined: 2011/5/27
From: UEP Subang Jaya
Posts: 276
Benz Model: W210 E280-V6
Message:
Re: Aircond too cold
My Megan (W210 with rotary switches) AC was too cold too. This was due to the hot water pipes (flowing to the cooling coil) were blocked and therefore the AC temperature could not be controlled. The previous owner blocked this hot water pipes.

Then I my mechanic friend unblocked the hot water pipes and he did the resetting using STAR. Now my AC can be controlled perfectly.

You may ask your mechanic to check this hot water pipes flowing to the cooling coil.

19owner
Posted on: 2011/9/29 22:42
Certified Benzitos
Joined: 2008/5/16
From: Kuala Lumpur
Posts: 4847
Benz Model: W201 and Others
Message:
Re: Aircond too cold
think what adiblalooi pointed out can also be true...

anyway, the code is saying the aux water pump is short or open...yeah, could be the pump is not working properly.

engine temperature ok?
atea4001
Posted on: 2011/10/1 19:08
Just can't stay away
Joined: 2010/5/29
From: Jalan Ipoh, Kuala Lumpur
Posts: 71
Benz Model: w202 1994
Message:
Re: Aircond too cold
Adib you may correct...I'll check again...
Mabel
Posted on: 2011/10/1 20:50
Benzo mania
Joined: 2007/8/7
From: Shah Alam, Cyber Jaya, Sunway
Posts: 20053
Benz Model: S320L, E240, C200
Message:
Re: Aircond too cold
Keep us posted atea!


----------------
Cheers/Mabel

Nothing great was ever achieved without enthusiasm
Take time to read. It is the fountain of wisdom
Membership Number: One Nine Seven Seven

Gan
Posted on: 2011/10/1 22:30
Certified Benzitos
Joined: 2008/12/5
From: Johor Bahru, Johor, Malaysia.
Posts: 1772
Benz Model: W202 , W204 . E90
Message:
Re: Aircond too cold
Quote:

atea4001 wrote:
After service my aircond, I feel temp so cold. At blower fan speed No 1 and minimum it still feel too cold, compressor cut out too short. Discuss with aircond mechanic, he said it could be my climate controller not so good. Checked with "potong part" cost me RM250. Before I proceed need advise.

Before that I borrowed my mechanic's (friend) dignostic machine and after test it written "code 050 circulation pump m13 discontinuity, Short circuit to ground". Any idea?


Understood The Problem ... was ...
due to the Heater System had Been BLOCKED / REMOVED

nothing wrong with your Air Con System ...
the Standard FACTORY Air Con System Was ....

Cut-off ..... at .... 0'c
Cut-in .... at .... 2'c

Please Ask Your Mechanic To Re-Connecting The Heater Circuit Back To The System ...

I Also Can Not Take It Without The Heating System ...
Toooooo Coooooold ... Unless to switch off the A/C System

hope this helps , cheers


----------------


MB Auto Garage
No 8 , Jalan Permas 9/2 ,
Bandar Baru Permas Jaya ,
81750 Masai , JOHOR .
(T) 07-3822 322 (F) 07-3866 502
(E) ganchinleong@yahoo.com
GAN CHIN LEONG
H/p : (012) 708 2660

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