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  #1  
Old 05-19-2006, 05:50 PM
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Join Date: May 2006
Posts: 7
A/C trouble W210

I have a problem with my A/C the compressor doesnt seem to be kicking in, can anyone by looking at the following readout from the climate control, help me as to what step to take next?
1998 E430
thanks
here are the "REST" Button results



1 32
2 28
3 30
4 30
5 30 <-- this was always 55 till i changed the Evap temp sensor
6 86
7 00 <--- this reading bothers me, but what causes and how to fix?
8 36
10 4.5
11 2.2
12 3.4
20 0
21 6
22 000
23 000 <---- I also Question this reading
24 13.5
40 71
41 34
42 72
43 152

I had the following error codes i reset them when i started working on it and none have returned, has been about a week a few hundred miles.

1226
1228
1229
1230
1231
1232
1233
1234
1459

Thanks for any and all help!

Jager

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  #2  
Old 05-19-2006, 11:02 PM
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Join Date: Oct 2005
Posts: 4,263
#7 at zero will prevent the compressor operation. Check for pressure in the system the old-fashioned way first.

I haven't looked up any of those codes, but can do so later if you need.
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  #3  
Old 05-20-2006, 12:42 AM
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Unhappy #7 at zero

None of the error codes are low charge, and shouldnt the climate control be stuck in economy mode, if charge is low?
maybe it didnt get that signal some how, ill check the charge today, thanks
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  #4  
Old 05-20-2006, 01:10 AM
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Posts: 7
codes

Those are the error codes from the climate control, not DTC codes
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  #5  
Old 05-20-2006, 01:15 AM
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05 is coolant temp. 30 is out of range low

"05 is coolant temp. 30 is out of range low"

my chart says #5 is Evaporator sensor temp, and #6 is coolant temp ?
is myne wrong?
also as i said the evaporator temp sensor i changed because it (#5) was always at 55, it now changes properly with the temp of evap housing.
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  #6  
Old 05-20-2006, 09:12 AM
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5 is evaporator, 6 is ECT.
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  #7  
Old 05-20-2006, 09:42 AM
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Posts: 7
Does this sound like maybe my hi pres switch might be bad? is there anyway to test or bypass this to check before replacing?
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  #8  
Old 05-20-2006, 11:37 AM
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Frankly, I don't know how it works, other than the fact that it's not a switch, takes a regulated +5V supply and ground, and produces an output to the climate-control unit N22.

I need to dig out my climate-control diagnostic manual for another reason, and I'll try to remember to look for any test for this.

Did you put a gauge on the system? You should see at least 30psi on the idle system (and that's very low - should be higher) if it's warm enough for the AC to be needed.
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  #9  
Old 05-20-2006, 03:59 PM
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A/C is ok now

I put a guage on it and it was quite low, charged it and now seems to be working fine, I dont know why the EC didnt stay on, or i didnt get a low charge error code, but it working great now, thanks for all the help!!
Jager
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  #10  
Old 05-20-2006, 04:16 PM
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Quote:
Originally Posted by Jagermeister
I put a guage on it and it was quite low, charged it and now seems to be working fine, I dont know why the EC didnt stay on, or i didnt get a low charge error code, but it working great now, thanks for all the help!!
Jager
Well, it works now. Saying it's all good to go may be premature. If it drops again, even a bit, add some dye. I don't know if the evaporators on these cars fail with the frequency of the earlier models, but it would not surprise me.

I'm about to put some dye in my system. I'm afraid of what I'll find out.
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  #11  
Old 05-20-2006, 06:25 PM
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Location: Ocean Isle Beach, NC
Posts: 2,446
A common leak point with the 210 systems is the one foot hose from the receiver/drier to the compressor. Look for oil at the connection to the receiver/drier.

Len
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  #12  
Old 05-20-2006, 08:21 PM
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Smile Leak

I checked the hose you mentioned, and all around that i can see, and im not seeing any oil spots or anything unusual, ill keep an eye on the charge and if any changes dig further for a leak
thanks
Jager

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