Climat controler

[buck1060]

my Preg C230 Kompressor Eligance AMG has the electronic controler that will not work in auto mode.
can this be repaired or is it a new unit required as i cannot find a secondhand part (so far)

PREG c230 KOMPRESSOR ELIGANCE
RREG c180 ELIGANCE
Discovery 300TDI
BMW 528

 

[television]

Very hard on AC systems,,best to get the fault codes read out, much cheaper with a good indie.

 

[bigasotonuk]

Hi,
It won,t neccassarily be the control unit it could be temp. sensor somewhere. Can you put up a pic of the control unit, as your car is on a change over year between being pre and post facelift. and the exact type of unit may be relevant.

 

[avsdoyle]

You could try resetting the unit. I had an issue with my air conditioning in my CLK but a quick reset fixed the issue and I now have a fully functioning digital air conditioning.

The following thread gives the instruction on how to do the reset

http://www.benzworld.org/forums/w203-c-class/1390511-help-air-conditioning.html

 

[television]

I put the details up before here

http://forums.mercedesclub.org.uk/showthread.php?t=28561&highlight=203+reset

 

[bigasotonuk]

This reset procedure is for 203's unfortunatly, the OP's car is a 202 being of 1997 vintage. Malcolm do you know if there is a procedure for the electronic 202 unit as i to would be interested.

 

[television]

This reset procedure is for 203's unfortunatly, the OP's car is a 202 being of 1997 vintage. Malcolm do you know if there is a procedure for the electronic 202 unit as i to would be interested.

No,,I have looked before and never seen one for the 202. The 202 is mainly manual and not electronic like the 203 where they have actuators for all of the flaps that get out of sync

 

[bigasotonuk]

Thank you for looking Malcolm, I have a problem with my Climate control, but rather than hi-jack this thread i,ll start another later.

 

[buck1060]

many thanks every one will get a picture up to day if i cani removedthe unit and opened it but it has a chip and circuit board so not user friendly.

 

[buck1060]

Climate Contoler

have had a word with the local IND and it is about £150 to have him check the system for codes etc.MB have said it is about £600 for a new one.

seems alot but will continue with the quest. good job the weathers not to cold.

 

[whitenemesis]

MB usually charge about £50 to read out codes (~30min job)

Controllers come up on ebay occasionally, I'm sure you could pick one up for a lot less than £600!

 

[television]

As above,thats a silly price to plug into STAR.

Could the problem be here

http://forums.mercedesclub.org.uk/showthread.php?t=27407

 

[bigasotonuk]

The problem with a 202 electronic climate control unit, is that it is only single zone, other vehicles such as the CLK 208, 210 E class share very, similar units but they are dual zone and are incompatible.
You could try removing the unit and running a soldering iron over the PCB inside the unit.
There is a diagnostic mode that the unit can be switched to but may only be of limited help, as the code numbers listed refer to a dual zone unit, but i,ll post it for you, as i believe the numbers are still accurate to ones that apply to a single zone.

Press and hold the the REST button for close to ten seconds and a diagnostic can be performed.
Use Fan speed arrows to scroll through 01-43.

Here's what the codes represent:
01 = In-car temp sensor
02 = outside temp sensor
03 = left heat exchanger (heater core) temp sensor
04 = right heat exchanger sensor
05 = evaporator sensor
06 = coolant temp
07 = refrig. pressure in bar
08 = refrig temp sensor (23*9 = 23.9deg C)
09 = nothing
10 = Blower control voltage (great for evaluating blower controller problems)
11 = emissions sensor (B31) e.g. 3.1 = 31.v
12 = sun sensor 4.2 = 4.2v
20 = aux fan control 6.1 = 6.1ma (max 10ma)
21 = engine speed
22 = vehicle speed
23 = Circuit 58d e.g. 99 = 99% of battery voltage
24 = BATTERY VOLTAGE e.g. 12.5 = 12.5v
30 = left rear air conditioning heat exchanger temp sensor (not all vehicles; obviously)
31 = right side
32 = rear evap temp sensor
33 = blower control voltage rear 0.8(MIN) - 6.0(MAX)
34 = left rear temp selector
35 = right side
38 = software status e.g. 37 rear air conditioning
40 = control module version software status (?)
41 = control module version menu hardware status
42 = control module variant code 1st number
43 = variant code second number.

 

[buck1060]

Climate Contoler

here go's just hope this picture will load of control unit
haveing spot of bother with camara (probaly me)