Hi Everybody,
I am working to restore my HVAC on the RS2 and I am faceing lots of problems .
One most important problem that I have difficulties to fix concerns the Climatronic Control Unit (CCU).
My original CCU is P/N 8A0 820 043 E but it does not operates the servomotors (I have already cleaned the servomotors, the electrical loom is in good condition and the CCU has no visible solder weakness).
I have found an other CCU from A4 B5 P/N 8D0 820 043 H (same design as the RS2 one) and it operates the servomotors correctly when launching the servomotors setup program ().
My question is :
The RS2 CCU is coded « 00040 » as the A4 B5 CCU is coded « 00043 »
I know that the first series of A4 B5 Climatronic worked with the same servomotors as the last 80 B4 (Bosch VMC 7V), that is why I have chosen this CCU to replace my original one.
But the A4 B5 CCU were programmed to work with additionnal sensors: copmpressor speed sensor, ambient light sensor (below the windscreen) and a 5th air temperature sensor (inside the the heaterbox).
My purpose is to setup the appropriate coding in the A4 B5 CCU in order that it works correctly in the RS2 configuration.
Do you have the meaning of these codings for these specific CCUs ?
Thank you for your help.
I am working to restore my HVAC on the RS2 and I am faceing lots of problems .
One most important problem that I have difficulties to fix concerns the Climatronic Control Unit (CCU).
My original CCU is P/N 8A0 820 043 E but it does not operates the servomotors (I have already cleaned the servomotors, the electrical loom is in good condition and the CCU has no visible solder weakness).
I have found an other CCU from A4 B5 P/N 8D0 820 043 H (same design as the RS2 one) and it operates the servomotors correctly when launching the servomotors setup program ().
My question is :
The RS2 CCU is coded « 00040 » as the A4 B5 CCU is coded « 00043 »
I know that the first series of A4 B5 Climatronic worked with the same servomotors as the last 80 B4 (Bosch VMC 7V), that is why I have chosen this CCU to replace my original one.
But the A4 B5 CCU were programmed to work with additionnal sensors: copmpressor speed sensor, ambient light sensor (below the windscreen) and a 5th air temperature sensor (inside the the heaterbox).
My purpose is to setup the appropriate coding in the A4 B5 CCU in order that it works correctly in the RS2 configuration.
Do you have the meaning of these codings for these specific CCUs ?
Thank you for your help.
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