Parasitic Battery Drain - Heating / Climatronic

[cgfen]

Our car has a parasitic battery drain that is very noticeable.
I've found a fuse, that when pulled drops the measured battery drain from ~ 140mAmps to 10mAmps.
This is repeatable.
The fuse index says it's the heating / climatronic which I take to be the HVAC control
I know that 964 / 993 CCUs Climate Control Units have this failure mode.

Have any of you seen it in a 997.2 Carrera?
140 mAmps with fan off and HVAC off.

 

I'm uncertain how to troubleshoot the CCU


Thank you

[cgfen]

Since I'm making this troubleshooting process up as I go along, I just;

Took the meter out of the circuit.

Connected the battery

Key on

Cycled thru all of the HVAC functions

Turned HVAC system OFF

Put the meter back in the circuit

= 

No change

 

sad face