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Topic: a/c issues
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post #2 of (permalink) Old 07-03-2018, 02:13 PM
BenzWorld Junior Member
Date registered: Jul 2018
Vehicle: 2001 Mercedes-Benz E55 AMG
Location: PA
Posts: 16
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Quoted: 2 Post(s)
I have similar problem!

Originally Posted by clb0099 View Post
I also noticed that the value of the Freon on the climate live data was 18 which I believe is 1.8. The normal level that I have seen is between 6-11 on my climate control.

Heat on : Ac on

1-96 1-87
2-73 2-80
3-154 3-114
4-154 4-127
5-93 5-94
6-179 6-184
7-0.5 7-0.8.
8-69 8-75
The 3 and 4 are high with the AC on, unless you just ran it with Heat on and didn't have a chance to cool off. If it is higher than ambient temperature it means the DUO valve is leaking.
The "Freon" pressure (value for 7) is in BAR, a 5 means 5BAR, 8 means 8BAR. 1BAR = 14.5 PSI. That seems OK.
The AUX fans (front of the condenser) should run with the AC on. If you hold down both Auto buttons for 30 seconds, the AUX fans should come on (to test them).

Please let us know the outcome after replacing the DUO valves. I have almost the same symptoms, with similar data values!
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