I believe if you look at the actual values when operating correctly vs with fan speed at max when not, that you will see the voltage reported on #10 is not plausible while the fault is occuring (ie: 6volts reported and no air movement).

Mine has been intermittant for a year or so; oftentimes I can reset it by turning the CCU off and then restarting the engine (wasiting some of my 200k lifetime starts). Sometimes not. Mine does this more in the winter when heat is needed which is a lil easier to live with compared to no cooling.

I'll be perfroming teh W140 reg retrofit sometime soon.

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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)